Securing your electrical installations Prisma, an optimised solution for type tested low voltage switchboards up to 3200 A
Table of contents Developing installation safety 4 Prisma P * Electrical switchboards up to 3200 A 5 A complete safety of type tests 6 Several configurations 8 Schneider products inside Prisma P 10 General technical information: @ Connection by cables 11 @ Sizing of protective conductor PE 11 Prisma G * Electrical switchboards up to 630 A 12 General technical information: * Degree of protection IP code 14
Developing installation safety in commercial & industrial buildings With the Prisma P & G, Schneider Electric proposes highperformance technical solutions, with enhanced robusteness, looks and aesthetics to produce low voltage electrical switchboards up to 3200 A, in commercial and industrial buildings. Prisma P & G switchboards capitalize on the experience gained over 30 years, during which thousands of switchboards have been built and operated. Prisma P up to 3200 A Prisma G up to 630 A 4
Prisma P up to 3200 A From the simplest through to the highly sophisticated, these simple yet dependable solutions are tailored to meet customers needs. The modular building blocks are designed with a strict eye on details to ensure a professional result. Electrical switchboards... For a dependable electrical installation Total compatibility between Schneider Electric switchgear devices and the Prisma system helps build dependability into every electrical installation, that has been validated by type tests in compliance with standard IEC 60439-1. An electrical installation capable of evolving Modular in structure, Prisma can keep pace with evolving switchboard needs and integrate new functional units as required. Maintenance operations are fast and easy with total access to all switchgear devices. Total safety for users Switchgear devices are installed behind a protective front plate that leaves only the operating handle visible. General characteristics Enclosure @ material: sheet steel, anti-corrosion painting @ surface treatment: anti-corrosion coating, thermal polymerised polyester-epoxy powder. Colour Prisma beige / dark grey. @ busbar insulating supports: all plastic parts withstand fire or excessive heat caused by internal electrical phenomena, as per IEC 695-2.1: 960 30s/30s for supports for live metal parts. Building up installations Functional Prisma components can be used to build switchgear assemblies in compliance with: standards IEC 60439-1. @ with the following electrical specifications: ; rated insulation voltage for the main busbars: 1000 V ; rated current 3200 A ; peak withstand current: Ipk 187 kâ ; short time withstand current: Icw 85 ka rms / 1sec ; frequency 50 / 60 Hz. Prisma P functional system With the Prisma P cubicles, the same components, whether for switchgear installation, current distribution, cable running, etc., may be installed depending on the installation site, with the following varieties: @ IP 31, IP 54 @ Form 1 & 2 @ may be dismantled @ may be joined side by side @ 4 basic widths: 700, 900, 1100, 1300 mm @ 2 basic depths: 400, 600 mm and 2 back to back depths: 800, 1000 mm @ frame height: 2000 mm 5
A complete safety of type tests A dual guarantee The Prisma switchboard, tested and produced according to standards, offers its operator a dual guarantee: @ use of dependable components, with platform tested assemblies, @ rigorous final inspection. Schneider Electric offers Prisma switchboard series on which the 7 type tests have been conducted. Schneider Electric s Certified Prisma Partners, who assemble & test the Prisma switchboard, also attest to quality by carrying out the 3 individual routine tests specified in the international standard IEC 60439-1. These 10 tests guarantee the switchboard s operational safety, as well as the safety of people and equipment from switchboard commissioning onwards and throughout switchboard service life. IEC standard 60439-1 defines 7 type tests and 3 individual routine tests which offer the best long term safety and reliability guarantees to electrical installation. 10 tests to certify installation quality @ 7 type tests conducted on Prisma P which are: 1- temperature rise limit, 2- dielectric properties, 3- short-circuit withstand, 4- protection circuit efficency, 5- clearances and creepage distance, 6- mechanical operation, 7- degree of protection. @ Certified Prisma Partners attest to the quality of each switchboard by carrying out the 3 individual routine tests specified in the international standard IEC 60439-1: 1- cabling and electrical operation, 2- dielectric testing, 3- protection measures. 7 type tests conducted in the laboratory + 3 routine tests carried out by Certified Prisma Partner = a 100 % validated switchboard 6
70 80 Choice of Prisma P enclosures Depth = 400 mm cubicles 700 700 200 (1) W = 700 mm W = 900 mm (1) 200 700 200 or 700 400 W = 1100 mm 200 700 400 W = 1300 mm (1) (1) The cable or bar duct can be installed on the right or left side of the frame in which the devices are mounted. Depth = 600 mm cubicles (1) 700 700 200 W = 700 mm W = 900 mm (1) 200 700 200 or 700 400 W = 1100 mm (1) 200 W = 1300 mm 700 400 (1) The cable or bar duct can be installed on the right or left side of the frame in which the devices are mounted. Depth = 800 / 1000 mm (back to back) cubicles A depth of 800 or 1000 is obtained by installing the basic frames in all existing widths back to back. In the back to back layout, cubicle sides are covered by normal end panels according to the combination. D = 800 mm D = 1000 mm Two basic frames side by side Two basic frames of different depths can be joined directly together. + Two basic frames 7
Prisma P several configurations Upper horizontal basbar Breaker with incoming top busduct. Incoming circuit breaker Breaker with incoming top cables. 8
Breaker with bottom cable connection. Outgoing functional units Cable compartment Cable tie bars in width 200 & 400 mm. 9
Schneider products inside Prisma Prisma P switchboards are leveraged by an unparalleled lineup of products. These products are the building bricks of various solutions for electric distribution, power monitoring, motor control and protection and power factor Power metering & monitoring unit PowerLogic PM Air circuit breaker 630 A 1600 A Masterpact NT Air circuit breaker 800 A 3200 A Masterpact NW correction. Molded case circuit breaker 100 A 630 A New Compact NSX Molded case circuit breaker 100 A 400 A EasyPact We are committed to developing competitive, compatible products that are easy to install & operate. DIN rail products Miniature circuit breakers, residual current devices, earth leakage protection, etc. Domae Our products and systems optimize electrical installations, make them safer and more flexible, while complying with prevailing standards. Thermal magnetic circuit breaker GV2-ME, GV2-P Monitoring relays Zelio Control RM Low voltage capacitor banks Varplus 2 LV power factor controllers Varlogic 10
General technical information Connection by cables Practical rules: Schneider Electric recommends cabling according to the circuit breaker rating. The following tables take into account the installation conditions related to the type of device (permissible temperatures near the connection terminals, etc.). They ensure consistency with the temperature derating values of the installed devices. Connection of circuit-breaker by cables @ copper cables. Device NS100 NS160 NS250 NS400/NS630 Section (mm 2 ) 25 50 95 straps or bars Permissible current with cables secured individually Current (A) IP 31 14 25 29 39 55 77 100 125 150 190 230 Cable Section (mm 2 ) 1.5 2.5 4 6 10 16 25 35 50 70 95 Permissible current with cables secured in bundles Current (A) IP 31 12 20 24 33 50 70 93 120 Cable Section (mm 2 ) 1.5 2.5 4 6 10 16 25 35 Connection of other devices by cables @ copper cables. Permissible current with cables secured individually Current (A) IP 31 12 21 26 35 50 70 90 115 135 176 210 Cable Section (mm 2 ) 1.5 2.5 4 6 10 16 25 35 50 70 95 Permissible current with cables secured in bundles Current (A) IP 31 10 19 22 30 46 63 84 103 Cable Section (mm 2 ) 1.5 2.5 4 6 10 16 25 35 Sizing of protective conductor PE Optimised method: Use the calculation formula given by standard IEC 60439-1: S PE = I 2 t k @ S PE : cross-sectional area of PE in mm 2 @ I 2 : value of the phase-to-earth fault current = 60% of the value of the phase-to-phase fault current (standard IEC 60438-1 8.2.4.2). @ t: duration of the fault current in seconds @ k: a factor depending on the conductor material. k = 143 for a PVCinsulated copper PE conductor. Simplified method (based on the above formula): @ Use the table below. @ Depending on the Isc of the device, determine the cross-sectional area of the PE conductor. Cross-sectional area of the PE conductor (mm) Masterpact NWH3 with a 0.5 sec. time delay Other Schneider Electric device Isc 40 ka 1 bar 25 x 5 1 bar 25 x 5 40 < Isc < 50 ka 1 bar 50 x 5 1 bar 25 x 5 Isc u 50 ka 1 bar 50 x 5 1 bar 50 x 5 11
Prisma G up to 630 A Prisma G, the innovation of a complete functional system, is designed for the production of electrical switchboards up to 630 A and intended for harsh environments. Being sealed, sturdy, dismountable and combinable, Prisma G is enriched with new solutions satisfying our customers needs. Standards Prisma G complies with the main international standards: @ IEC 60439-1: relating to construction of low voltage switchgear and controlgear assemblies, @ IEC 60529: defining the degree of protection provided by enclosures, @ IEC 60068-2-11: defining resistance to salt mist, @ IEC 60068-2-30: defining resistance to damp heat, @ IEC 60439-1: defining a type tested bus bar provided by the enclosure. Construction @ Metal frame: folded sheet metal, @ Paint: epoxy powder polymerized at high temperature, @ Standard color: beige Prisma, @ Surface finish: smooth, @ Plastic components: self extinguishing in particular the supports for bare life conductors. Installation & cable entry @ Wall mounted, @ Semi-flush wall mounting, @ Directly on Canalis busduct, as a multi-feeder tap-off units, @ Indoor applications, @ Exists in single or double cells configurations, @ Cable entries are from top or bottom. Applications @ Fixed motor control centers, @ Power panels: main, tertiary and final distribution, @ Lighting panels, @ Fuse pillars, @ Busduct Canalis tap-off units, @ Control and automation. Switchgear @ 3 or 4 poles @ MCB & MCCB up to 630A 12
A dual guarantee The Prisma G enclosure, produced according to IEC standards, offers its operator a dual guarantee: @ use of dependable components, @ rigorous final inspection done by Schneider Electric s Certified Prisma Partners. Electrical characteristics rated insulation voltage (V a.c. 50-60 Hz) 1000 rated operational voltage (V a.c.) 690 rated short-time withstand current (ka / 1 sec) up to 25 rated peak withstand current (ka) up to 53 rated current (A) up to 630 Mechanical characteristics partitioning form 1 degree of protection - indoor type IP42 - IP54 Dimensions Width mm single cell configuration 580 double cell configuration 1160 Depth mm without door knobs or logo 230 Height (without plinth) mm 11 modules 696 15 modules 896 19 modules 1096 23 modules 1296 100% of panelbuilders and contractors using Prisma P & G solutions can prove that their switchboards are tested and compliant with IEC standards. 13
General technical information Degree of protection IP code Standard IEC 60364-3 lists and codes a large number of external influences to which an electrical installation may be subjected: presence of water, presence of solid bodies, risk of impacts, vibrations, presence of corrosive substances. These influences are exerted with an intensity varying according to installation conditions: the presence of water may be simply a few drops falling or complete immersion. Standard IEC 60529 indicates the degrees of protection provided by an enclosure for electrical devices against access to hazardous parts, against penetration of solid foreign objects and against penetration of water. These standards do not apply for the protection against the risks of explosion or conditions such a humidity, corrosive vapour, fungus or vermin. The IP code is made up of two digits and can include an additional letter when the actual protection against access to the hazardous parts is better than that indicated by the first digit. The first digit characterises the protection provided by the enclosure against the ingress of solid foreign objects. The second digit characterises the protection provided against the ingress of water with harmful effects. 1st digit Protection against ingress of solid objects 1 Protected against solid foreign objects larger than 50 mm Ø 50 mm 2nd digit Protection against ingress of water 1 Protected against vertically falling water drops (condensation) 2 Protected against solid foreign objects larger than 12.5 mm Ø 12,5 mm 2 Protected against vertically falling water drops when enclosure tilted up to 15 15 3 Protected against solid foreign objects larger than 2.5 mm Ø 2,5 mm 3 Protected against spraying water up to 60 from vertical 60 4 Protected against solid foreign objects larger than 1 mm Ø 1 mm 4 Protected against splashing water from all directions 5 Protected against dust (dust protected) 5 Protected against water jets from all directions 6 Dust tight 6 Protected against powerful water jets from all directions 7 Protected against the effects of temporary immersion in water 8 Protected against the effects of continuous immersion in water 14
Schneider Electric Egypt & NE Africa Head Office Land Plot no. 291 & 292, Second District, Fifth Settlement, New Cairo, Egypt Postal code 11835 Tel : +202 26 189 189 Fax: +202 26 189 263 http://www.schneider-electric.com.eg Customer Care Center (CCC) Hotline: 19775 email: customer.care@eg.schneider-electric.com Design & production: Communication - SEE Printing: Horizon Graphic As standard specifications and designs change from time to time, please ask for confirmation of the information given in this publication. SEE 860310 / E