Medium voltage switchgear Withdrawable vacuum circuit-breaker 1 to 17.5 kv Catalogue 2005 Web enabled Power & Control MCset
MCset range 1 to 17.5 kv Contents Presentation 2 MCset range 8 Presentation 8 Technical characteristics 10 Operating conditions 11 Protection of people 12 Motor protection and control 13 Choice of functional units 14 Cubicle description 16 AD type cubicles incomer and feeder 16 CL - GL type cubicles line-up bussectioning 17 TT type cubicles metering and busbar earthing 18 DI type cubicles switch-fuse feeder 19 Motorpact transition cubicle 20 Protection, monitoring and control 22 Thermal diagnosis 22 The protection system - Sepam range 23 Sepam 2000 - Sepam 100 24 Sepam series 20, series 40, series 80 26 Instrument transformers 28 Switchgear 32 Withdrawable parts 32 Evolis circuit-breaker 34 Vacuum type contactor 38 Withdrawable part extraction 40 Installation 41 Implementation examples 41 Connections 42 Appendices 44 Cubicle equipment 44 Current transformers (Selection guide) 45 A few references 46 Personal notes 47 1
Presentation 0Field of application MT20051 MCset adapts to all electrical power distribution requirements from 1 to 17.5 kv MCset is an indoor, metal switchgear unit intended for the MV section of HV/MV substations and high power MV/MV substations. b for all your applications: v industrial process substations, v infrastructure supply substations. MT20052 b MCset offers you: v pre-engineered and adaptable solutions tailored to your specific requirements, v significantly reduced maintenance, v local support centres throughout the world. b MCset gives you the advantages of: v continuity of service for your networks, v enhanced safety for your staff and operations, v optimized investment throughout the life of your installation, v the possibility of integrating your medium voltage switchboard in a monitoring and control system. MT20056 An enhanced offer with vacuum type switchgear The MCset offer is further enhanced to include a vacuum type circuitbreaker (Evolis range) and contactor. This switchgear offers you: b high mechanical and electrical endurance; b a comprehensive range of performance levels; b optimal operating safety; b environmental protection. Evolis range circuit-breaker 2
Presentation Continuity of service and complete safety MCset is solidly based on extensive experience acquired throughout the world and provides your networks with a high level of dependability and safety. MCset integrates a host of innovative solutions designed around proven techniques: high performance switchgear, digital protection, monitoring and control systems, enclosures capable of withstanding internal arcing. From its very conception, MCset has taken account of three key user requirements: MT20058FR Reliability b type testing was carried out for each performance level in the MCset range; b the design, manufacturing and testing of MCset was carried out according to ISO 9001 : 2000 quality standard; b three-dimensional computer modeling techniques were used to study the electrical fields. MT20059 Simplicity b a user interface which is easily understood by everybody; b interlocks and padlocks preventing operator errors; b Sepam-type protection units enabling on-site information retrieval without any additional devices; b maintenance limited to simple, routine operating checks and cleaning and greasing every 5 to 10 years; b easy installation due to identical civil engineering dimensions for all cubicles and installation being possible against a wall. Safety b operations are all performed from the front, including access to connections and busbars; b racking in and out is only possible with the door closed; b the power-on indicator is situated on the front of the functional unit; b the earthing switch has making capacity; b one single "anti-reflex" handle is used for all MCset operations; b internal arc withstand developed for all functional units. 3
Presentation MCset, a comprehensive solution MCset provides the most efficient means to control and protect a wide range of applications. Due to the devices it comprises, MCset can be easily integrated into a monitoring and control system. PE55170 PE55134 MT20055 Sepam protection and control units Sepam series 20, series 40 and series 80 digital protection relays take full advantage of Merlin Gerin experience in electrical network protection. Sepam series 20, series 40 and series 80 provides all the necessary functions: b effective protection of people and property; b accurate measurements and detailed diagnosis; b integral equipment control; b local or remote indication and operation. Easy evolution Addition of communication, digital I/O s, analog output, or temperature acquisition are possible due to its modular design. Power Meter and Circuit Monitor metering units The PowerLogic Power Meter replaces a full complement of basic analog meters. This cost effective, high performance meter provides a full complement of accurate true-rms metering values. The Powerlogic Series 3000/4000 Circuit Monitor is designed for critical power users and large energy consumers, to provide the information needed to confidently enter the evolving world of deregulation. It can be adapted to meter almost any time-of-use or real-time rate. Monitoring and control MCset can be easily: b integrated into an existing monitoring and control system: v communication of Sepam digital relay or Power Meter/ Circuit Monitor metering device through a standard protocol (Modbus); b integrated into a SMS PowerLogic electrical installation monitoring system. PE55136 Thermal diagnosis system Specially designed for Schneider Electric MV equipment, this system continuously monitors the temperature rise, using optical fibres and sensors installed at the heart of the sensitive areas. Thermal diagnosis system reduces the probability of failure and reduces maintenance time. 4
Presentation MCset, a comprehensive solution (cont d) PE55137 MCset Transparent Ready option MCset switchoards integrate Web technologies so that you can find out information about your electrical installation as easy as opening a Web page. All you need is a standard Web browser and a PC connected to your local area network. DE55465 TCP/IP over Ethernet Hub Front socket EGX400 Sepam Simple choice A simple choice between TRe-1 and TRe-2 service levels allows you to easily order your Transparent Ready Motorpact switchboard. A customized level is also available. Your Transparent Ready MCset switchoard comes equipped with a web server including web pages dedicated to power equipment data. MCset switchboard Sepam CM/PM Easy commissioning Transparent Ready equipment is delivered ready to connect and commission. A Quick Start guide, packaged with your switchboard, provides three easy-to-follow steps. PE55138 Functionalities provided Instantaneous readings Displays automatically updated meter values TRe-1 b TRe-2 b Circuit summary Displays the RMS current 3-phase average (A), the real power (kw), the power factor, the circuit-breaker status (if applicable), etc. b b Load current summary Displays the current RMS value for each phase (A), for all circuits b b PE55139 Demand current summary Displays the average demand current value for each phase (A), for all circuits Power summary Displays the present demand (kw), the peak demand (kw) and the times and dates of the records b b b b Energy summary Displays the energy (kwh) the reactive energy (kvarh) and the times and dates of the records b b Instantaneous readings, all devices Displays automatically updated meter values for all the communicating devices in the equipment b PE55140 Basic historical data logging, energy and trending Displays automatically updated meter values for all the communicating devices in the equipment b Log displays Displays data as time curves, or tables b Export of data tables Allows data tables to be exported in a standard Windows format. b 5
Presentation MCset, a comprehensive solution (cont d) MT20064 Modernizing Operating Specifying Implementing Schneider Electric Services, by your side throughout the life of your installation Specifying We help you to define your solutions: selection guide, technical assistance, advice Implementing We oversee the completion and commissioning of your installation: design, cost optimization, guaranteed performances and dependability, commissioning tests, etc. Operating We help run your daily operations in real time: maintenance contract, technical assistance, supply of replacement parts, corrective and preventive maintenance, operation and maintenance training, etc. Modernizing We can bring the performance of your installation up to date: installation audit, switchgear diagnosis, adaptation and modification, end of life recycling, etc. Examples of services provided MT20065FR Warranty extension A warranty extension is proposed if your installation is checked by ourselves before being commissioned. Circuit-breaker-contactor diagnosis Throughout the life of the equipment, it is possible to carry out routine measurement of its characteristics in order to optimize maintenance. This service may be part of a global installation maintenance contract. End-of-life recycling Schneider Electric Services has an operational subsidiary allowing you to recycle your medium voltage switchgear. 6
Presentation Quality assurance - environment MT20066 Certified quality: ISO 9001 A major asset In each of its units, Schneider Electric integrates a functional organization whose main role is to check quality and monitor compliance with standards. This procedure is: b uniform throughout all departments; b recognized by many customers and approved organizations. But above all, it is its strict application that has allowed us to obtain the recognition of an independent organization: The French Quality Assurance Association (AFAQ). The quality system for the design and manufacture of MCset is certified to be in conformity with the requirements of ISO 9001 : 2000 quality assurance standards. MT20067 MT20068 Strict and systematic checks During manufacture, each MCset functional unit is subject to systematic routine testing with the aim of checking the quality and conformity of the following features: v measuring of opening and closing speeds; v measuring of operating torque; v dielectric test; v testing of safety systems and interlocks; v testing of low voltage components; v conformity with drawings and diagrams. The results obtained are recorded and approved by the quality control department on each device s test certificate. This therefore guarantees product traceability. b Control of vacuum interrupters Each vacuum interrupter, sealed and airtight, is checked for the quality of the vacuum obtained. This pressure measurement is based on the proven "magnetron discharge" method. Using this sophisticated procedure, measurement is very precise and does not require access to the inside of the bulb, thus not affecting the airtight seal. MT20069FR Protected environment In order to help you protect the environment and to relieve you of any concerns about storing or dismantling this equipment, Schneider Electric Services offers to recover your equipment at the end of its life. MCset has been designed with environmental protection in mind: the materials used, insulators and conductors are identified, easily separable and recyclable. Production sites are certified to ISO 14000. 7
MCset range Presentation 0 PE60120 Busbars Low voltage control cabinet Sepam Circuit-breaker Current transformers Cables connection Voltage transformers compartment 8
MCset range Presentation 0 (cont.) Make up of an MCset switchboard MCset switchboards are made up of several interconnected functional units. Power connections are made between functional units within a switchboard via a single busbar. The electrical continuity of all metal frames is provided by the connection of each functional unit s earthing busbar to the switchboard s main earthing circuit. Low voltage wiring trays are provided in the switchboard above the low voltage control cabinets. LV cables can enter the switchboard through the top or bottom of each functional unit. Description of a functional unit A functional unit comprises all equipment in the main and auxiliary circuits which together provide a protection function. Each functional unit combines all the components which are required to fulfil this function: b the cubicle; b the protection, monitoring and control system; b the withdrawable part. The cubicle The cubicle is of LSC2B (Loss of Service Continuity Category) type as defined by IEC standard 62271-200, in other words the medium voltage parts are compartmented using metal partitions (PM class) which are connected to earth and which separate: b the busbars; b the withdrawable part (circuit-breaker, fuse-contactor, disconnector truck or earthing truck); b MV connections, earthing switch, current sensors and voltage transformers as required. MCset guarantees a high level of protection of people; when a compartment containing a main circuit is open, the other compartments and/or functional units may remain energised. The low voltage auxiliaries and monitoring unit are in a control cabinet separated from the medium voltage section. Four basic cubicle layouts are offered: b incomer or feeder AD b line up bussection CL - GL b busbar metering and earthing TT b switch-fuse feeder DI AD and CL cubicles have withdrawable vacuum type circuit-breaker and contactor switchgear. The protection, monitoring and control system This includes: b Sepam, protection, monitoring and control unit; b current sensors, which may be of 3 types: v conventional current transformers, v low voltage toroid type current transformers, v CSP type broad-range current transformers. b voltage transformers; b zero sequence core balance current transformers (CSH type). The withdrawable part This includes: b the circuit-breaker, contactor or the earthing truck with its closing and opening mechanism, or the disconnector truck; b the lever-type propulsion mechanism for racking in-out; b interlocks to fix the withdrawable part on the fixed part either in service position or disconnected. 9
MCset range Technical characteristics 0 MT20071 The values below are given for normal operating conditions as defined in IEC 62271-200 and 60694. Rated voltage (kv) 7.2 12 17.5 Rated insulation level power frequency withstand voltage 50 Hz - 1 mn (kv rms) 20 28 38 lightning impulse withstand voltage 1.2/50 µs (kv peak) 60 75 95 Nominal current and maximum short time withstand current (1) Functional unit with Evolis circuit-breaker short time withstand current Ith max. (ka/3 s) 25 25 25 31.5 31.5 31.5 40 40 40 (ka/1 s) 40 40 40 rated current In max. busbar (A) 2500 2500 2500 rated current In CB (A) 630 630 630 1250 1250 1250 2500 2500 2500 Functional unit with fuse-contactor short time withstand Ith max. (ka) 50 (2) current rated current In max. (A) 250 Functional unit with switch-fuse (DI cubicle) short time withstand Ith max. (ka) 50 (2) 50 (2) 31.5 (2) current rated current In max. y (A) 200 200 200 Internal arc withstand (ka) 25 to 40 (1) For functional units equipped with circuit-breakers or fuse-contactors, the breaking capacity is equal to the short time withstand current. In all cases, the device peak making capacity is equal to 2.5 times the short time withstand current. (2) Limited by fuses. 10
MCset range Operating conditions 0 MT20072 MT20073 Operating conditions Normal operating conditions, according to IEC 60694 for indoor switchgear b ambient air temperature: v less than or equal to 40 C, v less than or equal to 35 C on average over 24 hours, v greater than or equal to -5 C. b altitude: v less than or equal to 1000 m, v above 1000 m, a derating coefficient is applied (please consult us). b atmosphere: v no dust, smoke or corrosive or inflammable gas and vapor, or salt (clean industrial air). b humidity: v average relative humidity over a 24 hour period y 95%, v average relative humidity over a 1 month period y 90%, v average vapor pressure over a 24 hour period y 2.2 kpa, v average vapor pressure over a 1 month period y 1.8 kpa. Specific operating conditions (please consult us) MCset has been developed to meet the following specific conditions: b temperature (possible derating); b corrosive atmospheres, vibrations, (possible adaptation). Storage conditions In order to retain all of the functional unit s qualities when stored for prolonged periods, we recommend that the equipment is stored in its original packaging, in dry conditions sheltered from the sun and rain at a temperature of between 25 C and +55 C. Standards The MCset range meets the following international standards: IEC 60694: clauses common to high voltage switchgear IEC 62271-200 (60298): metal-enclosed switchgear for alternating current at rated voltages of between 1 and 52 kv IEC 62271-100 (60056): high voltage alternating current circuit-breakers IEC 60470: high voltage alternating current contactors IEC 60265-1: high voltage alternating current switches IEC 60282-2: high voltage fuses IEC 62271-102 (60129): alternating current disconnectors and earthing switches IEC 60255: measurement relay and protection unit (Sepam) IEC 60044-1: current transformers IEC 60044-2: voltage transformers. 11
MCset range Protection of people 0 MT20076 MCset switchboard with tunnel MCset internal arc Internal arc version: MCset is designed to withstand and protect operators in the case of failure due to an internal arc. MCset has been successfully tested using type tests. MCset proposes several options to install an internal arc switchboard. b 3-sided internal arc protection For an MCset switchboard fitted against a wall, access to the rear of the cubicle is impossible. Internal arc protection on 3 sides is sufficient. b 4-sided internal arc protection In the case of an MCset switchboard installed in the middle of a room, internal arc protection on 4 sides is necessary in order to protect an operator who goes behind the cubicle. b Installation in a room with limited ceiling height v ceiling height over 2.8 meters, it is possible to install a tunnel in order to avoid hot gas to be reflected by the ceiling. b Internal arcing detector MCset has a system enabling the detection of internal arcing and disconnecting of power supply in order to limit the duration of the fault to less than 140 ms. This system incorporates an electro-mechanical fail-safe trip system, located on the cubicle flaps. This unit transmits information to Sepam to give the circuit-breaker upstream of the fault the opening order. MCset Basic version (gas exhaust): MCset is designed to eliminate the effects of internal arcing in total safety, due to: b metal flaps positioned above the enclosure, which in the case of internal fault, limit overpressure in the compartments. b nonflammable materials used for the cubicle. MT20077 Dependable mechanical control devices All operations are carried out from the front face, including access to connections and busbars. The user is guided through icon-diagrams on each front panel making it easy to understand the operating sequence and device status. Interlocks and padlocks prevent operator errors. Several additional levels of security also protect operators: b racking in and out is only possible with the door closed; b the very extensive set of mechanical and electrical interlocks do not allow operator error. These can be added to by key locks or padlocks according to specific operating procedures. Each selector can be fitted with one to three padlocks; b all operations are carried out from the front face, including access to connections and busbars; b the voltage present indicator is located on the front face of the functional unit, in the immediate vicinity of the earthing switch control. Options b disarming of circuit-breaker when racking out. This function enables the circuit-breaker control springs to be disarmed during the extraction operation. b disabling of racking in. This function disables the possibility of racking the withdrawable part in if the busbar is energized. 12
MCset range Motor protection and control 0 PE60122 Motorpact, an innovative range of motor starters, with vacuum contactor Motorpact is a MV motor control centre which can be used as a lined up switcboard with MCset, using a transition cubicle. b Main characteristics: v rated voltage up to 7.2 kv v rated busbar current: up to 2500 A v rated short time withstand current: 40 ka 3s v internal arc withstand: 25 ka 1 s 40 ka 0,5 s 50 ka 0,25 s v rated operational currrent: 400 A v maximum fuse rating: 2 x 250 A. Note: for details see Motorpact catalogue n AMTED302059EN Motorpact motor starters provide a wide range of applications including reduced voltage starting: b FVNR : direct on line motor starter, b RVAT : reduced voltage autotransformer motor starter, b RVSS : dreduced voltage SoftStart motor starter. b They are suitable for all MV motor applications in markets such as: oil & gas, mining, water, pulp and paper, for starting: b pumps, b fans, b compressors, b crushers, b conveyors, etc. DE60175 MCset lined up with Motorpact Compactness b Compact dimensions thanks to a 375 mm width. b Softarter and Autotransfo built into the switchboard. Safety b Full cubicle protection for internal arc withstand (AFLR 4 sides). b Electrical and mechanical interlocking, closed door operation. b Visible insulation by means of portholes Reliability b Fewer components and fasteners. Less maintenance b Corrosive atmosphere withstand. b Maintenance free disconnector (capacity: 5000 operations). b Front access to compartments. 13
MCset range Choice of functional units 0 The MCset range comprises 13 functional applications. The table below can be used to link requirements to functional units and gives basic information on the general composition of each unit. Selection guide: You want to supply power to a transformer. The chosen solution is a transformer feeder/breaker. The corresponding functional unit will therefore be a TF-B, comprising a AD cubicle equipped with a withdrawable circuit-breaker, and transformser application Sepam. Function Incomer (1) Feeder line transformer generator line transformer transformer Functional unit LI-B TI-B GI-B LF-B TF-B TF-S cubicle AD (1 to 3) AD (1 to 3) AD (1 to 3) AD (1 to 3) AD (1 to 3) DI 2 device circuit-breaker circuit-breaker circuit-breaker circuit-breaker circuit-breaker fuse-switch Sepam protection relay application substation transformer generator substation transformer Single line diagrams MT20080 Sepam MT20081 MT20082 (1) The direct incomer (functional unit without a circuit-breaker, equipped with a fixed busbar bridge) is produced using cubicles AD1-2-3. 14
MCset range Choice of functional units (cont.) Feeder Bussectioning Metering and busbar earthing motor motor capacitor capacitor switchboard substation MF-B MF-C CB-B CB-C BS-B SS-B BB-V Motorpact transition AD (1 to 3) AD1 AD (1 to 3) AD1 CL (1 to 3) and AD (1 to 3) TT (1-2) GL (1 to 3) circuit-breaker fuse-contactor circuit-breaker fuse-contactor circuit-breaker circuit-breaker motor motor capacitor capacitor busbar substation MT20081 MT20083 MT20081 MT20083 MT20084 DE55076 MT20078 DE60167 15
Cubicle description AD type cubicles incomer and feeder 0 AD1, AD2, AD3 DE55081 DE55082 DE60168 1 7 H H 2 5 4 6 3 L L P AD1 AD2 DE55083 H MV compartments 1 busbars for cubicle interconnection 2 withdrawable part 3 MV connections by cables accessible from the front face 4 earthing switch 5 current sensors 6 voltage transformers (optionally equipped with withdrawable fuses). LV control cabinet 7 low voltage auxiliaries and the protection, monitoring and control unit are in a control cabinet which is separated from the medium voltage part. L AD3 Characteristics AD 1 AD1 contactor AD 2 rated voltage kv 7.2 12 7.2 7.2 12 17.5 7.2 12 17.5 rated insulation level kv rms 50 Hz - 1 mn 20 28 20 20 28 38 20 28 38 kv impulse 1.2/50 µs 60 75 60 60 75 95 60 75 95 rated current A 250 b 630 b b b b b b b b b 1250 b b b b b b b b b 2500 b b b b b b b b b breaking capacity ka 25 25 50 (3) 31.5 31.5 25 31.5 25 31.5 40 25 31.5 40 25 31.5 40 short time withstand current (ka rms 1 s) 25 25 50 (3) 31.5 31.5 25 31.5 25 31.5 40 25 31.5 40 25 31.5 40 short time withstand current (ka rms 3 s) 25 25 50 (3) 31.5 31.5 25 31.5 25 31.5 40 25 31.5 40 25 31.5 40 weight and dimensions H (mm) 2300 2300 2300 W (mm) 570 700 900 D (mm) (1) 1550 1550 1550 approximate weight (kg) (2) 850 1000 1300 AD 3 (1) Overall + 175 mm for 4-sided internal arcing protected switchboards, or 2 sets of CT s. (2) Fully equipped cubicle. (3) Limited by fuses. 16
Cubicle description CL - GL type cubicles line-up bussectioning 0 The bussectioning functional unit comprises 2 cubicles mounted side by side (one cubicle equipped with a circuit-breaker, the other with a busbar return). CL1, CL2, CL3 GL1, GL2, GL3 DE55087 DE60169 1 5 DE60170 1 6 3 2 H 4 L L P P CL1-2-3 or GL1-2-3 MV compartments 1 busbars to connect the bussectioning functional unit with other switchboard functional units 2 withdrawable part 3 current sensors 4 voltage transformers (optionally equipped with withdrawable fuses). LV control cabinet 5 low voltage auxiliaries and protection, monitoring and control unit are in one control cabinet, separated from the medium voltage part. Characteristics CL1 - GL1 CL2 - GL2 CL3 - GL3 rated voltage kv 7.2 12 7.2 12 17.5 7.2 12 17.5 rated insulation level kv rms 50 Hz - 1 mn 20 28 20 28 38 20 28 38 kv impulse 1.2/50 µs 60 75 60 75 95 60 75 95 rated current A 630 b b b b b b b b b 1250 b b b b b b b b b 2500 b b b b b b b b b breaking capacity ka 25 25 31.5 31.5 25 31.5 25 31.5 40 25 31.5 40 25 31.5 40 short time withstand current (ka rms 1 s) 25 25 31.5 31.5 25 31.5 25 31.5 40 25 31.5 40 25 31.5 40 short time withstand current (ka rms 3 s) 25 25 31.5 31.5 25 31.5 25 31.5 40 25 31.5 40 25 31.5 40 weight and dimensions H (mm) 2300 2300 2300 W (mm) 570 (x 2) 700 (x 2) 900 (x 2) D (mm) (1) 1550 1550 1550 approximate weight (kg) (2) 1300 (CL1 + GL1) 1500 (CL2 + GL2) 1700 (CL3 + GL3) (1) Overall + 175 mm for 4-sided internal arcing protected switchboards, or 2 sets of CT s. (2) Fully equipped cubicle. 17
Cubicle description TT type cubicles metering and busbar earthing 0 TT1, TT2 DE55093 DE55094 DE60171 1 4 H H 2 3 L L P TT1 TT2 MV compartments 1 busbars to connect the TT functional unit with other switchboard cubicles 2 earthing switch 3 voltage transformers (optionally equipped with withdrawable fuses). LV control cabinet 4 low voltage auxiliaries and the protection, monitoring and control unit are in a control cabinet which is separate from the medium voltage part. Characteristics TT1 TT2 rated voltage kv 7.2 12 7.2 12 17.5 rated insulation level kv rms 50 Hz - 1 mn 20 28 20 28 38 kv impulse 1.2/50 µs 60 75 60 75 95 rated current A 630 b b b b b b 1250 b b b b b b 2500 b b b b b b short time withstand current (ka rms 1 s) 31.5 50 50 31.5 40 short time withstand current (ka rms 3 s) 31.5 50 40 31.5 40 weight and dimensions H (mm) 2300 2300 W (mm) 570 700 D (mm) (1) 1550 1550 approximate weight (kg) (2) 500 550 (1) Overall + 175 mm for 4-sided internal arcing protected switchboards. (2) Fully equipped cubicle. 18
Cubicle description DI type cubicles switch-fuse feeder 0 DI2 DE55098 DE60172 4 1 H 2 3 L P DI2 MV compartments 1 busbars to connect the DI functional unit with other switchboard cubicles 2 switch-earthing switch 3 MV fuses. LV control cabinet 4 low voltage auxiliaries and the protection, monitoring and control unit are in a control cabinet which is separate from the medium voltage part MT20093 DI cubicles including a fuse switch are used to supply power and protect low power transformers. E.g.: auxiliary service transformers in primary substations. All operations are carried out from the front face, including access to connections and busbars. All functional interlocks meet recommendations in IEC 60298: b the switch is only possible to close if the earthing switch is open and the connection access panel is in place. b closing of the earthing switch is only possible if the switch is open. b opening of the access panel to medium voltage connections and fuses is only possible of the earthing switches upstream and downstream of the fuses are closed. b the switch is locked in the open position when the access panel is taken off. The voltage presence indicator is situated on the front face of the functional unit, integrated in the switch s control panel. Characteristics DI2 rated voltage kv 7.2 12 17.5 rated insulation level kv rms 50 Hz - 1 mn 20 28 38 kv impulse 1.2/50 µs 60 75 95 rated current A 200 b b b short time withstand current (ka rms) (3) 50 50 31.5 weight and dimensions H (mm) 2300 W (mm) 700 D (mm) (1) 1550 approximate weight (kg) (2) 750 (1) Overall + 175 mm for 4-sided internal arcing protected switchboards. (2) Fully equipped cubicle. (3) Limited by fuses. Switch The three rotating contacts are placed in an enclosure filled with gas to a relative pressure of 0.04 MPa (0.4 bar). The system offers maximum operating reliability: b gas tightness The SF6 filled enclosure is of the "sealed pressure system type". Sealing tightness is always checked in the factory. b safety v the switch may be in one of three positions: "closed", "open", or "earthed", giving a natural interlocking system that prevents operator error. Moving contact rotation is driven by a fast acting mechanism that is independent of the operator. v the device combines the breaking and disconnecting functions, v the SF6-enclosed earthing switch has a short circuit making capacity in compliance with standards. 19
Cubicle description Motorpact transition cubicle 0 DE60176 DE60174 H L P Composition b Basic equipment: v 1 enclosure (standard IP3X), v 1 set of busbars in separate compartment, v 1 removable front panel. b Options v internal arc withstand, v IP4X or IPX1 enclosure, v encapsulated busbars. Characteristics Motorpact transition cubicle maximum rated voltage 7.2 kv impulse withstand voltage (1.2/50 µs, peak value) 60 kv power frequency withstand voltage (1 mn) 20 kv busbars rating 630 A 1250 A 2500 A 3150 A dimensions H 2300 mm L 375 mm P 1550 mm approximate weight 1250 A 240 kg 2500 A 275 kg 3150 A 310 kg 20
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Protection, monitoring and control 0Thermal diagnosis Continuity of service is of prime importance for electrical power supplies, particularly. for heavy industries. By using the new thermal diagnosis system developed for MCset, we offer you the possibility of monitoring on an on-going basis, thus reducing the probability of failure and reducing maintenance time. MT20119 PE55160 Thermal diagnosis: Schneider Electric s medium voltage know-how This innovative system has been specifically designed for the MCset range. It incorporates fibre optic temperature measurement systems within an environment subject to high dielectric stresses. Schneider Electric s expertise provides you with the assurance of perfect electromagnetic compatibility between the various cubicle components. The advantages of thermal diagnosis b permanent monitoring of temperature rise in power circuits (busbars, cable connectors, switchgear); b indication of the fault zone; b 2 trip thresholds are available, using a dry contact. Components The thermal diagnosis system comprises the following components: b 1 or 2 modules mounted in the low voltage control cabinet; b 3 -point temperature probes (spread over the 3 phases) can be installed in various monitored zones: v 3 sensors in the busbar compartment, v 3 sensors in the cable connector compartment, v 3 sensors in the switchgear compartment; b fibre optic links to transmit the signal. 22
Protection, monitoring and control 0The protection system Sepam range Each MCset functional unit is equipped with a comprehensive protection, monitoring and control system comprising: b instrument transformers to measure the necessary electrical values (phase current, residual current, voltages, etc.) b protection relays, providing functions adapted to the part of the network to be protected b metering equipment, to inform operators b low voltage relaying, i.e. to provide control of the breaking device (contactor or circuitbreaker) and of the withdrawable part b various auxiliaries: secondary circuit test units, etc. MT20094 protection relays metering equipment switchgear (circuit-breaker or contactor) instrument transformers PE55170 Sepam: protection, monitoring and control units Sepam, is a range of digital monitoring protection and control units. Sepam is at the centre of the protection, monitoring and control system for MCset functional units: all the necessary protection, metering, control, monitoring and signalling functions are carried out by Sepam. Like the MCset range, the Sepam range is a range of units defined to provide an optimal solution for each application, and includes: b Sepam S, substation incomer and feeder; b Sepam B, bussectioning; b Sepam T, transformer feeder; b Sepam M, motor feeder; b Sepam G, generator feeder; b Sepam C, capacitor feeder. The Sepam range hinges around 2 functional and hardware bases: Sepam series 20, 40 and series 80,a range of modular reays to meet your exact needs, v Sepam 2000, focused on performance, covers all MCset functional applications. Sepam advantages Reliability b Over 20 years of experience in multi-function digital protection relays. b Over 150 000 Sepam units in service in more than 90 countries. Quality b Quality design based on dependability studies and strict definition of environmental constraints: temperature, pollution, EMC, dielectric strength b Quality manufacturing based on procurement agreements with suppliers and inspection throughout all manufacturing phases. Simplicity of use b Ergonomic and intuitive user machine interface (UMI). b User friendly and powerful PC setting software. 23
Protection, monitoring and control 0Sepam 2000 Sepam 100 MT20097 Sepam 2000, for all applications The Sepam 2000 range of digital protection, monitoring and control units provides a comprehensive solution for all applications: substation, busbar, transformer and motor, as well as generators and capacitors. Different types of Sepam 2000 dédiés à la protection are proposed for each type of equipment to be protected. For example, there are 30 different types of Sepam 2000 dedicated to protection, monitoring and control of transformers. Each Sepam 2000 is an optimized solution, designed to provide an exact response to the actual requirements of a functional application, including all the required functions, ready to use. Sepam 2000 Focused on performance, Sepam 2000 includes the following functions: b metering functions: measurement of current and voltage, measurement of power and active and reactive energy, etc. b protection functions: directional phase and earthing protection, differential transformer or machine protection, etc. b monitoring and control functions: in its function as a programmable logical controller, Sepam 2000 is pre-programmed to carry out standard monitoring and control functions, and can be reprogrammed to handle any specific automatic control function. To choose the type of Sepam 2000 best suited to your application, the "Sepam range" catalogue includes selection charts for the whole Sepam 2000 range, (document AC0401). A "Sepam 2000 Selection Guide" software package is also available for computeraided selection of Sepam 2000 for a given application. PE60116 PE60117 PE60118 E61780 Sepam 100 units Sepam 100 units round off the Sepam range and can be installed either separately or combined with either Sepam series 20, 40 and series 80 or Sepam 2000. Sepam 100MI Sepam 100LD Sepam 100LA Sepam 100 has several variants: Sepam 100 MI, local breaking device control and signalling modules (many different line diagram types are available); b Sepam 100 LD, high impedance differential protection; b Sepam 100 LA, Self-powering protection (back-up protection without auxiliary power supply). 24
Protection, monitoring and control 0Sepam 2000 selection table Fonctions Sepam 2000 Applications Substation busbar Transformer Motor Generator Capacitor Measurements currents voltages and frequencies powers and energies I1/I2/I3/I0 IM1/IM2/IM3 Itrip 1/2/3/0 U21/U32/U13 V1,V2,V3 V0 Vd f P/Q, PM/QM, cos Ea/Er b b b b b b b b b b b b b b b b b b temperatures b b b Protections ANSI codes phase 50/51 b b b b b b earth 50N/51N b b b b b b imbalance 46 b b directional 67/67N b b 67N b differential 87T/87M/87B 87T 87M 87M restricted earthing differential 64REF b b overload 49/49T/38 b b b 49 motor 37/48/51LR/66 b voltage 59/27 b b b b 27/59 59N frequency 81H/81L b b b uncoupling (df/dt) 81R b b specific 32P 79 27R 25 27D 50N/51 (neutral point) 50/51 (tank earth) 27R 32P and 32Q/40 27D/47 32P, 32Q/40 25 50V/51V Network diagnosis disturbance recording 2 recording of 86 periods Switchgear diagnosis operation time trip currents, sum of breaking currents A 2 b b b b b b trip circuit monitoring b b b b b b watchdog 1output/4 contacts: 2 x (1NO + 1NC) Communication protocol Modbus interface RS485, 2 or 4 wire Monitoring and control inputs/outputs basic 10I/6O in/out maximum 26I/14O in/out breaking device control b b b b b b logical selectivity b b b b b b customizing parameter setting b b b b b b programming b b b b b b b available functions cap. bank imbalance 25
Protection, monitoring and control 0Sepam series 20, series 40 and series 80 The Sepam range of protection relays is designed for the operation of machines and electrical distribution networks of industrial installations and utility substations at all levels of voltage. It includes 3 families : b Sepam series 20, for usual applications; b Sepam series 40, for demanding applications; b Sepam series 80, for custom applications to cover all needs, from the simplest to the most complete. Sepam protection relay A range of solutions adapted to your application b substation protection (incomers, feeders, busbars); b transformer protection; b motor and generator protection. A comprehensive solution, integrating all of the necessary functions for your application b effective protection of people and property; b accurate measurements and detailed diagnosis; b integral equipment control; b local or remote indication and operation. Flexibility and upgrading capability To adapt to as many situations as possible, and allow for future installation upgrading, optional modules may be added to Sepam at any time for new functions. PE55170 PE40013 3 1 4 5 2 Sepam series 20, series 40 and series 80 6 7 Sepam series 80 modular architecture 1- Base unit, with integrated or remote advanced User Machine Interface. 2- Parameter and protection, settings saved on removable memory cartridge. 3-42 logics inputs and 23 output relays with 3 optional modules providing 14 inputs and 6 outputs. 4-2 independent Modbus communication ports b direct connection to 2-wire RS 485, 4-wire RS 485 and fiber optic networks, b connection to Ethernet TCP/IP network via PowerLogic System Webserver (Transparent Ready). 5- Processing of data from 16 temperature sensors. 6-1 low level analog output, 0-10 ma, 4-20 ma or, 0-20 ma. 7- software tools: b Sepam parameter and protection setting and control logic customization; b local or remote installation operation; b retrieval and display of disturbance recording data. Simplicity Easy installation b The same, easy-to-install remote modules for all Sepam units. Commissioning assistance b Predefined functions implemented by simple parameter setting; b user-friendly, powerful PC setting software tool. Intuitive use b Clear graphic LCD display of all data required for local operation and installation diagnosis; b working language may be customized to be understood by all users. 26
Protection, monitoring and control 0Sepam series 20, series 40 and series 80 Selection table Sepam Protections Applications Basic Specific Substation Transfo. Motor Generator Busbar Sepam series 20 b 10 logic inputs b 8 relay outputs b 8 temperature probe inputs b 1 Modbus communication port DE50113 Current protection S20 T20 M20 DE50114 Voltage and frequency protection B21 Loss of mains (ROCOF) B22 Sepam series 40 b 10 logic inputs b 8 relay outputs b 16 temperature probe inputs b 1 Modbus communication port b Logic equations editor DE50104 Current voltage and frequency protection Directional earth fault S40 T40 G40 S41 M41 Directional earth fault and phase overcurrent S42 T42 Sepam series 80 b 42 logic inputs b 23 relay outputs b 16 temperature probe inputs b 2 Modbus communication port b Logic equations editor DE50115 Current voltage and frequency protection Directional earth fault S80 S81 T81 M81 DE50116 Directional earth fault and phase overcurrent S82 T82 G82 Transformer or machinetransformer differential T87 M88 G88 Machine differential M87 G87 27
Protection, monitoring and control Instrument transformers Conventional current transformers Conventional current transformers are used to provide power to metering, measuring or control devices. They measure the value of primary current from 10 A to 2500 A. Schneider Electric has drawn up a list of current transformers which are appropriate for use with digital protection devices in order to make it easier to determine accuracy characteristics. This list is available in the selection guide on page 45. For contactor cubicle AD1 E28676 ARJP1, 2 or 3 Transformer ARJP1/N2J b single primary current, double secondary current for measurement or protection b frequency 50-60 Hz I1n (A) 10 20 30 50 75 100 150 200 250 Ith (ka) 1.2 2.4 3.6 6 10 10 10 10 10 t (s) 1 1 1 1 1 1 1 1 1 measuring* cl.0.5 15 VA protection* 5P20 2.5 VA For cubicles AD1-CL1-GL1-AD2-CL2-GL2 Transformer ARJP2/N2J b double primary current, double secondary current for measurement or protection b frequency 50-60 Hz I1n (A) 50-100 75-150 100-200 150-300 200-400 250-500 600 750 Ith (ka) 40 40 31.5-40 40 40 40 50 50 t (s) 1 1 1 1 1 1 1 1 measuring* protection* cl.0.5 5-10VA 10-20 VA 7.5-15VA 10-20 VA 20VA 20VA 5P20 2.5-5VA 2.5-5VA 2.5-5VA 2.5-5VA 5-10VA 5-10VA 7.5VA 7.5VA For cubicles AD1-CL1-GL1-AD2-CL2-GL2 Transformer ARJP3/N2J b single primary current, double secondary current for measurement or protection b frequency 50-60 Hz I1n (A) 1000 1250 Ith (ka) 50 50 t (s) 1 1 measuring* cl.0.5 30 VA 30 VA protection* 5P20 10 VA 10 VA For cubicles AD3-CL3-GL3 E74399 ARJA1 Transformer ARJA1/N2J b single primary current, double secondary current for measurement or protection b frequency 50-60 Hz I1n (A) 1500 2000 2500 Ith (ka) 50 50 50 t (s) 1 1 1 measuring* protection* cl.0.5 30 VA 30 VA 30 VA 5P20 15 VA 15 VA 15 VA * The secondary current for measuring and protection can be of 1 A or 5 A. 28
Protection, monitoring and control Instrument transformers (cont.) E72965 Low voltage toroid type current transformers For cubicles AD1-AD2 with one single-pole cable Transformer ARC2 b single primary current, single secondary current for protection b frequency 50-60 Hz I1n (A) 75 100 150 200 250 300 400 Ith (ka) 50 50 50 50 50 50 50 t (s) 1 1 1 1 1 1 1 protection 5P20 2.5 VA 2.5 VA 5 VA 5 VA 5 VA 5 VA 5 VA b single primary current, double secondary current for measurement or protection b frequency 50-60 Hz I1n (A) 200 250 300 400 600 Ith (ka) 50 50 50 50 50 t (s) 1 measuring protection 5 VA cl.1 10 VA cl.0.5 10 VA cl.0.5 15 VA cl.0.5 15 VA cl.0.5 5P20 2.5 VA 5 VA 5 VA 5 VA 5 VA For cubicles AD1-AD2 with two single-pole cables Transformer ARC3 b single primary current, double secondary current for measurement or protection b frequency 50-60 Hz I1n (A) 750 1000 1250 Ith (ka) 50 50 50 t (s) 1 measuring protection cl.0.5 20 VA 30 VA 30 VA 5P20 7.5 VA 10 VA 10 VA E34400 CSP sensor CSP type broad-range current transformers CSP type current sensors, designed for the Sepam 2000, work on the Rogowski coil principle. CSP sensors use a winding around an insulating core with no magnetic circuit, which prevents saturated and residual flux. Therefore, they are completely linear, and deliver an accurate secondary signal, a perfect image of the primary current, without distortion for both steady and transient states in the primary circuits. These sensors have much wider primary current ranges than current transformers do. The combining of CSP sensors and Sepam 2000 gives a consistent protection and measurement system. This in turn makes current sensor specification simpler (choosing from 3 sensors for a rated insulation level of 17.5 kv). Sensors CSP 3110 CSP 3210 CSP 3310 CSP 3410 Rated current 30 to 300 A 160 to 640 A 160 to 1600 A 500 to 2500 A For Sepam 2000, the primary current is chosen to be lower than the indicated range. Cubicle type I rated Isc (ka) 1 s Type AD1 - AD2 30-300 40 CSP 3110 AD1 - AD2 CL1 - CL3 160-1250 50 CSP 3310 CSP 3210 AD3 - CL3 500-2500 50 CSP 3410 CSP cannot be used with differential protection devices. They should be preferred in all other cases in which measurement and protection uses Sepam. 29
Protection, monitoring and control 0Instrument transformers (cont.) E28679 E28680 VRQ3 Voltage transformers These supply power to: b measuring, metering and monitoring devices; b relays or protective devices; b auxiliary LV sources for various types of switchgear; all these devices are protected and insulated from the MV section. They are installed at the bottom of the functional unit. In the withdrawable fuse version, the voltage transformers are attached to a side wall. The energized part is entirely encapsulated in an epoxy resin, which provides both electrical insulation and excellent mechanical strength. They include the following models: b with one insulated MV terminal, for connection between neutral and phase conductors in three-phase systems with withdrawable MV fuses; b with two insulated MV terminals, for connection between phase conductors. For cubicles AD1-CL1-GL1-TT1-AD2-CL2-GL2-AD3-CL3-GL3 Transformer VRQ3n/S2 b phase-earth b frequency 50-60 Hz primary voltage (kv) 1st secondary voltage (V) 2nd secondary voltage (V) 1st secondary accuracy class (VA) 2nd secondary accuracy class (VA) 3/3 3.3/3 5.5/3 6/3 6.6/3 10/3 11/3 13.8/3 15/3 100/3 110/3 110/3 100/3 110/3 100/3 110/3 110/3 100/3 100/3 110/3 110/3 100/3 110/3 100/3 110/3 110/3 100/3 30-50 VA cl.0.5 50 VA cl.0.5 For cubicles AD2-CL2-GL2-TT2-AD3-CL3-GL3 Transformer VRC1/S1F b phase-phase b frequency 50-60 Hz primary voltage (kv) 3.3 5.5 6.6 11 13.8 15 secondary voltage (V) 110 110 110 110 110 100 accuracy class (VA) 75 VA cl.0.5 VRC1/S1F 30
Protection, monitoring and control 0Instrument transformers (cont.) MT20104 For cubicle AD1 contactor This transformer provides power to the coil in order to keep the magnetic circuit of the contactor closed. Transformer VRCR/S1 b phase-phase b frequency 50-60 Hz primary voltage (kv) 3.3 5.5 6.6 secondary voltage (V) 110 110 110 accuracy class (VA) 50 VA cl.0.5 VRCR E28678 CSH toroid CT Zero sequence core balance current transformers (CSH type) CSH 120 and CSH 200 core balance CT s, provide more sensitive protection by direct measurement of earth fault currents. Specifically designed for the Sepam range, they can be directly connected to the Sepam "residual current" input. They are only different in terms of their diameter: b CSH 120-120 mm internal diameter; b CSH 200-200 mm internal diameter. 31
Switchgear Withdrawable parts 0 PE55048 Withdrawable part Extraction table 32
Switchgear 0Withdrawable parts (cont.) hese include: b the circuit-breaker or contactor, the disconnector truck or the earthing truck; b the lever-type propulsion mechanism for racking in-out; b interlocks to fix the withdrawable parts onto the fixed part. The live parts are housed in an insulating enclosure in the sealed pressure system in compliance with IEC 6271-100. The devices used to equip the MCset range of functional units have outstanding features: b long service life; b maintenance-free live parts; b high electrical endurance; b operating safety; b insensitivity to the environment. Withdrawable parts MT20101 Circuit-breaker A circuit-breaker is a safety device enabling switching and protection of electrical distribution networks. Installed in the MCset cubicle, it protects all components situated downstream during a short-circuit. MT20102 Earthing truck The earthing truck is a safety feature which allows the cubicle busbar to be earthed. It is installed instead of the circuit-breaker and has the same interlock possibilities. MT20103 Disconnector truck The disconnector truck enables the upper and lower part of the cubicle to be shortcircuited. It is installed instead of the circuit-breaker and has the same interlock possibilities. 33
Switchgear 0Withdrawable parts Evolis circuit-breaker MT20105 Presentation The Evolis circuit-breaker equips cubicles AD1-2-3 and CL1-2-3 at ratings of 7.2 kv to 17.5 kv. High electrical endurance A magnetic field is applied in the axis of the vacuum interrupter contacts. This process maintains the arc in diffused mode even at high current values. It ensures optimal dispersion of the energy over the contact surface and avoids localised temperature rise. The advantages of this technique are: b a very compact vacuum interrupter; b low energy dissipation of the arc in the vacuum interrupters. Evolis is in conformity with the highest electrical endurance class (IEC 60056: class E2). MT20106 High mechanical endurance The magnetic field is generated by a patented outside coil which surrounds the contact area. This solution has many advantages: b a simplified and therefore reliable vacuum interrupter unit; b heavy duty contacts which do not distort under repeated switching operations. This is the first time that a low voltage device control mechanism has been used on a medium voltage circuit-breaker. The Masterpact control unit used on Evolis has the advantages of a system which has been proven for over 10 years in hundreds of thousands of installations. Evolis is in conformity with the most demanding mechanical endurance class (IEC 60056: class M2). Characterisitics of Evolis circuit-breakers in MCset cubicles The electrical characteristics are given on the circuit-breaker designation (rating plate). xx Px xxxx Rated current: 630 (630 A) 1250 (1250 A) 2500 (2500 A) Breaking capacity: 1 (P1 = 25 ka) 2 (P2 = 31.5 ka) 3 (P3 = 40 ka) Rated voltage: 7 (7.2 kv) 12 (12 kv) 17 (17.5 kv) E.g. (in grey in the table): 7 P1 630 (7.2 kv; 25 ka; 630 A) Evolis/ MCset 1 Evolis/ MCset 2 Evolis/ MCset 3 rated voltage kv 7.2 12 7.2 12 17.5 7.2 12 17.5 insulation level kv rms 50 Hz - 1 mn 20 28 20 28 38 20 28 38 kv impulse 1.2/50 µs 60 75 60 75 95 60 75 95 rated current A 630 b b b b b b b b 1250 b b b b b b b b 2500 b b b b b b b b b breaking capacity ka 25 25 31.5 31.5 25 31.5 25 31.5 40 25 31.5 40 25 31.5 40 short time withstand current ka rms 1 s 25 25 31.5 31.5 25 31.5 25 31.5 40 25 31.5 40 25 31.5 40 short time withstand current ka rms 3 s 25 25 31,5 31.5 25 31.5 25 31.5 40 25 31.5 40 25 31.5 40 capacitor breaking capacity A 400 400 400 rated operating sequence O - 0.3 s - FO - 15 s - FO 34
Switchgear 0Withdrawable parts Evolis circuit-breaker (cont.) MT20109 Operating mechanism description Evolis range circuit-breakers are actuated by an Masterpact operating mechanism, that ensures a switching device closing and opening rate that is independent of the operator. This operating mechanism, which is always motorised, can perform remote control functions and enables fast reclosing cycles. This Masterpact operating mechanism includes: mechanical devices: b an energy storage mechanism stores the energy required in the springs, to close and then to open the device; b a manual lever-controlled arming device; b an electric motor-controlled (MCH) arming device which automatically rearms the control unit as soon as the device is closed;. Re-arming time less than 4 s; b a mechanical opening and closing device using two push buttons situated on the front circuit-breaker panel which are accessible with the cubicle door open (circuit-breaker in the test position). For the door closed control unit (circuit-breaker racked in): the circuit-breaker can be opened by controlling the propulsor unit. release units: b an electrical closing device (XF), comprising a closing release for remote control with an anti-pumping device; b an electrical opening device comprising one or several opening releases. The basic circuit-breaker equipment comprises a shunt trip unit (MX). This can be supplemented with the following options: v either a second shunt release unit (MX), v or an undervoltage release unit (MN), v or an undervoltage release unit with time delay (MN + delay unit). b a switching operation counter (CDM); b an indication contact for when the circuit-breaker is "Ready to close" (PF) - option; b an indication contact for when the circuit-breaker is "Ready to Function" (PAF) - option; b a position indicator for "open" "closed" through a mechanical "black-white" indicator; b a multipin connector to disconnect the auxiliary circuits in the "racked-out" position. auxiliary contacts: b 4 changeover contacts are available; b 1 or 2 blocks of 4 changeover contacts can be added as an option. Antipumping function In the case of latched opening and closing orders, the device is blocked in the open position. This function involves on one hand giving absolute priority to the opening order, but also and above all to stopping closing, in order to avoid the device being locked in an indefinite opening/closing cycle: b the opening and closing coils can be supplied power on a permanent basis in order to provide electrical interlocking: there is no internal self-breaking contact in the device. b interlocking between the opening and closing orders, for whatever reason, is achieved in a standard manner within the device s control mechanism. General diagram MT20108 opening order closing order ready to close closed MCH PF OF OF OF CH MX XF 35
Switchgear 0Withdrawable parts Evolis circuit-breaker (cont.) MT55165 Charging motor and associated mechanism (MCH) The MCH unit arms and rearms the energy storage springs as soon as the circuitbreaker is closed. This enables instant reclosing of the device after opening. The arming lever is only used as back up control in the absence of an auxiliary voltage. The MCH is equipped as standard with a CH limit switch. This contact indicates the "armed" position of the mechanism (spring armed). Characteristics supply V AC 50/60 Hz 48/60 100/130 200/240 V DC 24/30 48/60 100/125 200/250 threshold 0.85 to 1.1 Un consumption (VA or W) 180 motor overcurrent 2 to 3 In during 0.1 s arming time 4 s max. switching rate 3 cycles per minute max. mechanical endurance 10000 remote controlled opening operations for 25 and 31.5 ka circuit-breaker 5000 remote controlled opening operations for 40 ka circuit-breaker CH contact 10 A to 240 V MT55164 Opening release on energising (MX) This causes the instantaneous opening of the circuit-breaker as soon as it is energised. Permanent power supply to the MX locks the circuit-breaker in the "open" position.the possibility of installing a second release as an option. This causes the instantaneous opening of the circuit-breaker as soon as the power is supplied, and can be supplied power on a permanent basis or on an impulse basis. Closing release on energising (XF) This causes the circuit-breaker to close when the control unit is armed. Characteristics of MX - XF release units power supply V AC 50/60 Hz 24/30 48/60 100/130 200/250 V DC 24/30 48/60 100/130 200/250 operating threshold (MX) 0.7 to 1.1 Un operating threshold (XF) 0.85 to 1.1 Un consumption (VA or W) pick-up: 200 latched: 4.5 response time of the circuit-breaker at Un (MX) 50 ms ± 10 response time of the circuit-breaker at Un (XF) 70 ms ± 10 for 25 and 31.5 ka performance levels 80 ms ± 10 for 40 ka performance level MT55169 00399 Switching operation counter (CDM) The switching operation counter is visible from the front panel. It gives a total number of switching cycles that the device has been through. MT55168 MT55180 PF contact PAF contact "Ready to close" contact (PF) - option b the "ready to close" position of the circuit-breaker is indicated by a mechanical indicator and a PF changeover contact. b this information indicates simultaneously that: v the circuit-breaker is open, v the energy storage springs are armed. Characteristics breaking capacity V AC 240/380 5 A cos : 0.3 V DC 24/48 3 A AC12/DC12 125 0.3 A 250 0.15 A minimum load: 10 ma/24 V The "ready to function" contact (PAF) - option This contact indicates that the circuit-breaker is locked in the "racked in" position. Characteristics rated current 16 A breaking capacity V AC 220 16 A (cos : 0.4) V DC 220 0.8 A (L/R y 40 ms) 36
Switchgear 0Withdrawable parts Evolis circuit-breaker (cont.) MT55164 Undervoltage release (MN) - option This release unit causes the instantaneous opening of the circuit-breaker when its supply voltage drops below a value of between 35 and 70% of its rated voltage. If the release unit is not supplied power, it is impossible to close (manually or electrically) the circuit-breaker. Any attempt to close the circuit-breaker causes no movement of the main contacts. Closing of the main circuit-breaker is authorised when the supply voltage of the release unit reaches 85% of its rated voltage. Characteristics power supply V AC 50/60 Hz 24/30 48/60 100/130 200/250 V DC 24/30 48/60 100/130 200/250 operating opening 0.35 to 0.7 Un threshold closing 0.85 Un consumption (VA or W) 20 response time 90 ms ± 5 of the circuit-breaker at Un MT55170 Time delay for undervoltage release unit (MN) - option In order to eliminate spurious tripping of the circuit-breaker during short voltage sags (micro-outage), the action of the MN is time-delayed. This function is achieved by adding an external time delay unit on the MN voltage release unit (adjustable). The time delay unit placed outside of the circuit-breaker can be disabled by an emergency stop button in order to obtain instantaneous opening. Characteristics power supply V AC 50/60 Hz 48/60 100/130 200/250 V DC 48/60 100/130 200/250 operating opening 0.35 to 0.7 Un threshold closing 0.85 Un consumption (VA or W) 200 response time 0.5 s - 0.9 s - 1.5 s - 3 s of the circuit-breaker at Un MT55167 Auxiliary circuit-breaker position contacts - option These contacts indicate the "open" or "closed" position of the circuit-breaker. 1 or 2 blocks of 4 changeover contacts can be installed. 2 applications are available: b standard for a relayed application; b low level for the control of plc s or electronic circuits. This version is compatible with Sepam 1000+. Characteristics breaking capacity standard V AC 240/380 6 A 10/6 cos : 0.3 V DC 24/48 2.5 A 10/6 AC12/DC12 125 0.5 A 10/6 250 0.3 A 3 minimum load: 10 ma/24 V low level V AC 24/48 240 5 A 10/6 380 5 A 3 V DC 24/48 5/2.5 A 10/6 125 0.5 A 10/6 250 0.3 A 3 minimum load: 1 ma/4 V Control unit spring disarming - option This option guarantees operator safety when the circuit-breaker s front panel is removed from the MCset. 37
Switchgear 0Withdrawable parts Vacuum type contactor MT20107 Description The vacuum type contactor comprises: b 3 vacuum interrupters (breaking); b an electromagnetic control unit which can be of: v magnetic latching type, v mechanical latching type. b upstream and downstream connection terminals for the power circuit; b mechanical contactor locking in the open position in order to avoid racking out or racking in with the contacts closed; b 3 HPC fuses with a striker and auxiliary contacts to trip the contactor; b the possibility of installing a transformer to provide an independent power supply for the contactor control unit (option); b an indicator on the front panel to show the contactor position (2) ; b a switching operation counter; b auxiliary contacts; b interchangeable with other contactors in the range (Rollarc). Electrical characteristics rated voltage kv (50/60 Hz) 7.2 insulation level kv, rms 50 Hz - 1 mn 20 kv, impulse 1.2/50 µs 60 operating current A 250 (1) rated current A 400 short time withstand current (ka rms 2 s) 8 short time withstand current (ka rms 12 s) 4 short time withstand current (ka rms 30 s) 2.4 mechanical endurance (number of operations) 2 500 000 250 000 (2) electrical endurance (number of operations) 250 000 250 000 (2) (1) For greater values: please consult us. (2) Version with mechanical latching. Control unit Supply voltage (3) V DC: 110, 120 and 220 V V AC: 100, 110, 120 and 220 V possible variations: +10% -15% (3) Possibility of supplying power through an auxiliary transformer, optional (see page 31). Consumption Closing is achieved via the inrush coils. The latching coils are inserted in the circuit at the end of travel. under 100-110 V inrush latched with magnetic latching 5 A 0.6 A with mechanical latching 5.5 A Auxiliary contacts The auxiliary contacts are of changeover type with a common point. The following are available : v 3 NO + 3 NC for the magnetic latching version, v 2 NO + 2 NC for the mechanical latching version. Contact characteristics operating voltage max. 480 V, min. 48 V rated current 10 A breaking capacity: V DC: 60 W (L/R 150 ms) V AC: 700 VA (cos 0.35) 38
Switchgear 0Withdrawable parts Vacuum type contactor (cont.) E32130 Figure 1 Maximum switchable power Calculation assumptions (motor) b ratio between starting current Id and maximum current In: Id/In = 5 ± 20%; b power factor x efficiency 0.88 x 0.9 = 0.792 for 300 < P < 600 kw 0.9 x 0.92 = 0.828 for 600 < P < 1100 kw 0.92 x 0.94 = 0.865 for 1100 < P < 5000 kw; b starting time < 10 s; b starts per hour y 3 according to IEC 60644. E32151 Figure 2 Operating voltage (kv) Direct starting motor (kw) with 315 A fuses Transformer (kva) with 315 A fuses 3.3 1170 1130 1000 4.16 1480 1420 1260 5 1780 1710 1520 5.5 1960 1880 1670 6 2130 2050 1820 6.6 2350 2250 2000 Capacitor (kvar) with 315 A fuses Trip curves The trip curves for Fusarc CF (figure 1) and Ferraz (figure 2) fuses are shown above. These are the average curves with an rms current value tolerance I ± 10%. Fuses The fuses used are of the Fusarc CF or Ferraz type (Standard IEC 60282.1 and DIN 43625) with high breaking capacity. Substantial fault current limitation reduces the electrodynamic stresses on the load-side components (contactor, cables, CT, etc). A "blown fuse" device is used to open the three poles of the contactor. rated voltage (kv) 7.2 max. fuse rating (A) 315* breaking capacity (ka) 50 * Higher values, please consult us. E32131 Figure 3 MT20110 Schematic diagrams Magnetic latching contactor + C M1 verrouillage enclenchement closing interlock Sepam XE XE S4 + C XU XU XE X20 32 FU1 S61 21 K1 33 4 1 3 X61 4 1 3 FU1 5 YF K1 6 DU K1 P61 O 000 40 9 36 20 FU1 S61 YD K1 K1 2 7 E32152 Figure 4 M2 - C Contacteur à maintien magnétique 2 10 21 - C MT20111 + C + C M1 Sepam verrouillage enclenchement closing interlock XU XE XE X20 32 33 4 1 3 XU XE 22 21 22 21 X61 FU1 K1 4 5 YF 6 1 DU 3 K1 P61 O 000 Limitation curves Fusarc CF (figure 3) and Ferraz (figure 4) fuses have current limiting capacity. These curves give the maximum value of the limited breaking current Ic (in ka peak), as a function of the value Ip (in ka rms) of the presumed current that would be created if there were no protection. For further details, ask for the fuse catalogues. M2 - C S4: release push button YD: release coil DU: control component P61: switching operation counter YF: closing coil 2 2 K1: MV contactor S61: latching contact FU1: MV fuses XE: auxiliary control relay XU: auxiliary relay - C 39
Switchgear Withdrawable part extraction 0 MT20112 Extraction table Adaptable to 3 cubicle widths, this extraction table enables: b the withdrawable part to be removed from the cubicle; b the withdrawable part to be fitted into the cubicle. MT20113 Extraction and lowering tool - option Adaptable to 3 cubicle widths, this extraction tool enables: b the withdrawable part to be removed from the cubicle; b the withdrawable part to be introduced into the cubicle; b the withdrawable part to be lowered to the ground; b the withdrawable part to be lifted from the ground. MT20114 Racking handle This handle enables: b the withdrawable part to be racked in/out; b the earthing switch to be open/closed. 40
Installation Implementation examples 0 MCset 1-2-3 (7.2 to 17.5 kv) Line up switchboard (2 supplies cubicles and 1 bussection) DE55075 500 570 570 900 900 900 900 570 570 570 500 2 feeders cubicle AD1 incomer cubicle AD3 bussection cubicles CL3/GL3 incomer cubicle AD3 3 feeders cubicle AD1 Civil engineering with utility space (MCset 7.2 to 17.5 kv) DE55074 room entrance (1) (1)(5) 2500 2800 200 1550 1520 (3) - 1720 (4) B 420 (1) 810 A 1100 (2) (1) Minimum dimensions to be complied with when installing the MCset switchboard. (2) Minimum dimensions to be defined according to the cable bending radius. (3) Operating distance. (4) Distance needed to extract a functional unit from the switchboard without moving the other units. (5) Provide an exhaust tunnel above the switchboard when the room height is less than 4 metres (see page 14). A anchor point B adjustment point Note: for further information, refer to the civil engineering, user and instruction manual. 41
Installation Connections 0 E72901R Switchgear resistance to ageing in a substation depends on 3 key factors b the need for correctly made connections New cold connecting technologies offer easy installation and favour durability in time. Their design means they can be used in polluted environments with harsh atmospheres. b the impact of relative humidity The installing of a heating element is essential in climates with high relative humidities and significant temperature differentials. b ventilation control The dimensions of air vents must be appropriate for the dissipated energy in the substation. They must only sweep across the transformer environment. Cold connected terminals Schneider Electric s experience has led it to favour this technology wherever possible for optimum durability. The maximum acceptable cable cross-section for standard assemblies are: b 630 mm 2 for incomer or feeder cubicles with single-pole cables; b 400 mm 2 for incomer or feeder cubicles with three-pole cables; b 95 mm 2 for transformer protection cubicles with fuses. Access to the compartment is only possible when the earthing switch is closed. Tightening torques for cables will be attained using a dynamo wrench set to 50 mn. Dry, single pole cable Short end piece, cold connectable performance 3 to 17.5 kv - 400 A - 2500 A cross section mm 2 50 to 630 mm 2 supplier all suppliers of cold connectable terminals: Silec, 3M, Pirelli, Raychem... number of cables 1 to 8 per phase comments for greater cross-section and number of cables, please consult us Dry, three-pole cable Short end piece, cold connectable performance 3 to 17.5 kv - 400 A - 2500 A cross section mm 2 50 to 400 mm 2 supplier all suppliers of cold connectable terminals: Silec, 3M, Pirelli, Raychem... number of cables 1 to 4 per phase comments for greater cross-section and number of cables, please consult us Connection possibilities using dry cables Number of cables AD1 AD1 cont. AD2 AD3 DI2 1 single per phase b (1) b (1) b (1) b 2 single per phase b (1) b (1) b (1) b 3 single per phase b b b b 4 single per phase b 1 three per cubicle b b b 2 three per cubicle b b b b 3 three per cubicle b b b b 4 three per cubicle b (1) Possibility of installing LV toroid transformers. 42
Installation Connections 0 (cont.) Bottom cable connection MT20117 Cable connection height Type of cubicle Configuration H (mm) AD1 - AD2 630 A LV toroid CT 650 (1) 1 set of 3 CT s 500 2 sets of 3 CT s 465 1250 A LV toroid CT 650 (1) 1 set of 3 CT s 480 2 sets of 3 CT s 465 AD3 2500 A 1 set of 3 CT s 435 2 sets of 3 CT s 435 DI2 450 (1) When installing with a LV core balance CT, use a LV core balance CT of type ARC3 when connecting with 2 cables (see page 31). Figure 1 MT20118 b The cubicles and cables requiring the maximum depth should be taken into consideration when determining the depth P of a switchboard cable duct (figure 1). b When using cables of length greater than 460 mm, install an additional compartment as marked (A) under the cubicle (figure 2). Top cable connection (optional) 2 depths are available, function of the number of cables and the internal arc withstand of the cubicle: 2000 mm and 2275 mm. Figure 2 Top busbar connection (optional, figure 3) DE60173 The cubicle depth is equal to 2000 mm, it can be equipped with 1 or 2 CT s. Figure 3 43
Appendices Cubicle equipment 0 Equipment Type of cubicle AD1 AD1 cont. AD2 AD3 CL1 CL2 CL3 GL1 GL2 GL3 TT1 TT2 DI2 Switchgear circuit-breaker b b b b b b contactor b fuse switch disconnector truck v v v v v v earthing truck v v v v v v v fixed busbars b b b racking position indication contact for the withdrawable part 3 NO + 3 NC b b b b b b b 6 NO + 6 NC v v v v v v padlocking of isolating shutters for withdrawable parts v v v v v v v locking of withdrawable part/cable compartment v v v v v v v disabling of circuit-breaker operating mechanism v v v v v v voltage present indicator b b b b v v v b (1) b (1) b locking of mechanical racking of the withdrawable part (padlock) b b b b b b b locking of mechanical racking of the withdrawable part (keylock) v v v v v v v locking of the electromagnetic racking of the withdrawable part v v v v v v v Earthing switch (SMALT) earthing switch v v v v v v v v v b earthing switch position indication contacts 3 NO + 3 NF v (1) v (1) v (1) v (1) v (1) v (1) v (1) v (1) v (1) v (4) earthing switch position key locking (2) v (1) v (1) v (1) v (1) v (1) v (1) v (1) v (1) v (1) v electromagnetic earthing switch position locking v v v v v v v v v Transformers voltage transformers (1 per phase) without fuse phase-phase v v v v v v v phase-earth v v v v v v v v v v v with plug-in fuses phase-phase v v v v v v v phase-earth v v v v v v v v v v v fuse melting indication contact 1 NO v v v v v v v v v v v current transformer single set 3 CT s v v v v v v v v v v double set 6 CT s v v v v LV toroid transformer CT (3) v v v Connections connection with cable terminal height > 460 mm v v v v v connection from top bar v v v v connection by cable from the top v v v v connection by cable from the bottom b b b b b Cubicle protection index enclosure IP3X b b b b b b b b b b b b b IP4X b b b v b b v b b v b b b IPX1 v v v v v v v v v v v v v compartments (5) IP2XC b b b b b b b b b b b b b anti-arcing protection (2) 25 ka - 1 s v v v v v v v v v v v v v 40 ka - 1 s v v v v v v v v lightning arrester v v v v v v v v v Busbars 1250 A/2500 A exposed b b b b b b b b b b b b b insulated v v v v v v v v v v v v v LV control cabinet key locking v v v v v v v v v v v v v LV control cabinet lighting v v v v v v v v v v v v v anti-condensation heating element v v v v v v v v v v key: b: basic equipment v: option (1) basic equipment with earthing switch option. (2) according to the room in which the MCset switchboard is installed, you can choose option 3 or 4 sides, and possibly an exhaust tunnel for hot gases (see page 14). (3) Connection 1 or 2 cables per phase. (4) 1 NO + 1 NC available. (5) Compartment protection. b 44
Appendices Current transformers (Selection guide) 0 Preferred current transformers: 7.2 to 17.5 kv secondary 1 A or 5 A Type of cubicle Accuracy class and ratio AD1 AD1 fusecontactor AD2 AD2 AD3 CL3 Isc ka 1 s 31,5 NA (1) 40 50 50 31,5 50 ratio number 1 accuracy class and ratio 40-80/1 or 5 2.5-5 VA - 5P20 50-100/1-5 2.5-5 VA - 5P20 v 10/1-1 or 5-5 2.5 VA - 5P20 15 VA - cl 0.5 v 20/1-1 2.5 VA - 5P20 15 VA - cl 0.5 v v v CL1 CL2 75-150/1 or 5 2.5-5 VA - 5P20 v 30/1-1 or 5-5 2.5 VA - 5P20 15 VA - cl 0.5 v v 100-200/1-1 or 5-5 2.5-5 VA - 5P20 v 40/1-1 or 5-5 2.5 VA - 5P20 15 VA - cl 0.5 v v 150-300/1-1 or 5-5 2.5-5 VA - 5P20 10-20 VA - cl 0.5 v 50/1-1 or 5-5 2.5 VA - 5P20 15 VA - cl 0.5 v v 200-400/1-1 or 5-5 5-10 VA - 5P20 7.5-15 VA - cl 0.5 v 75/1-1 or 5/5 2.5 VA - 5P20 15 VA - cl 0.5 v v 250-500/1-1 or 5-5 5-10 VA - 5P20 10-20 VA - cl 0.5 v 100/1-1 or 5-5 2.5 VA - 5P20 15 VA - cl 0.5 v v 600/1-1 or 5-5 7.5 VA - 5P20 20 VA - cl 0.5 750/1-1 or 5-5 7.5 VA - 5P20 20 VA - cl 0.5 1000/1-1 or 5-5 10 VA - 5P20 30 VA - cl 0.5 1250/1-1 or 5-5 10 VA - 5P20 30 VA - cl 0.5 1500/1-1 or 5-5 15 VA - 5P20 30 VA - cl 0.5 2000/1-1 or 5-5 15 VA - 5P20 30 VA - cl 0.5 2500/1-1 or 5-5 15 VA - 5P20 30 VA - cl 0.5 v 150/1-1 or 5-5 7.5 VA - 5P10 15 VA - cl 0.5 v 200/1-1 or 5-5 2.5 VA - 5P20 15 VA - cl 0.5 v 250/1-1 or 5-5 2.5 VA - 5P20 15 VA - cl 0.5 v 300/1-1 or 5-5 2.5 VA - 5P20 15 VA - cl 0.5 400/1-1 or 5-5 2.5 VA - 5P20 15 VA - cl 0.5 v v v v v v v v v v v v v v v v v v v v v v v (1) Short-circuit current withstand is co-ordinated with the current limited through the fuses. Other characteristics are available, including the possibility of having 3 secondary windings. Please consult us detailing the type of protection or measuring required as well as the impedance of the outside loads and the cabling. 45
A few references MCset, a product for all your electrical distribution applications MAPP Energy b EPM, Colombia b CHE-POIANA-TEIULUI, Roumania Infrastructure b Heathrow airport, United Kingdom b commercial building, ATIRAU, Azerbaijan Industry b steel, SIDMAR, Belgium b steel, SMS DEMAG, Chile b paper, SOPORCEL, Portugal b water, LATTAKIA-WATER, Syria b water, KHARAMA, Algeria b water, GAZIANTEP DSI, Turkey b oil, SHELL, Netherlands b oil, SHELL, Brunei b oil, SHELL, Nigeria b automotive, FORD KOLN, Germany b chemistry, AMMONIA UREA, Turkmenistan b petrochemistry, TEKFEN AIOC, Azerbaijan b petrochemistry, TURKMENBASHI, Azerbaïdjan b wood, ÇAMSAN, Turkey E74226 E74223 46
Appendices Personal notes 0 47
Appendices Personal notes 0 48
Schneider Electric Industries SAS 89 boulevard F. Roosevelt F-92500 Rueil Malmaison France Tel: +33 (0)1 41 29 85 00 Fax : +33 (0)1 41 29 89 01 http://www.schneider-electric.com RSC Nanterre B 954 503 439 As standards, specifications and designs change from time to time, please ask for confirmation of the information given in this publication. Publishing: Schneider Electric SA Production: SEDOC-HeadLines Printing: Imprimerie du Pont de Claix AMTED301014EN 2004 Schneider Electric - All rights reserved ART 25091 11-04