Safety and power availability of LV Assemblies. Buildings and large sites

Transcription

1 Safety and power availability of LV Assemblies Buildings and large sites

2 Guarantee to our customers safe switchboards Why? In all buildings, the electrical installation is one of the most sensitive element in term of risks for people and goods Fires Electrocutions Blasts, 2

3 Guarantee to our customers Power availability Why? Some examples across the world France Electrical origin fire in a tools manufacturer losses = $ 1,2 M 1 fire on 5 electrical origin 55,000 lost working days USA $ 10 B of losses in industry commerce per year Germany Dusseldorf airport fire 3 days of complete closing full recovery of exploitation after 2 months China fires of electrical origin in

4 To ensure your customer peace of mind You need to provide him Safety and Power availability 4

5 Through Compliance with IEC61439 standard Go Schneider Electric expertise Go 5

6 Compliance with IEC61439 Standard Schneider Electric expertise Power availability Standards Schneider Electric LV offer Safety 6

7 IEC61439 Standard IEC Standards: international references LV electrical Installations: IEC & local standards Switchboard: Old: IEC New: IEC &2 Busbar trunking: IEC Switchgear & controlgear: IEC x 7

8 IEC &2 Standard Why an ASSEMBLY standard IEC61439? Regarding ASSEMBLIES, safety of persons and property, and availability of electrical power depends on: Designing the overall system according to the relevant standards Controlling various interactions Protecting persons against any hazards due to the ASSEMBLIES themselves Providing operating, maintenance and modification capabilities 8

9 Evolutions of the ASSEMBLY Standard From IEC to IEC &2 9

10 IEC61439 Standard The International ASSEMBLY standards From IEC to IEC &2 NEW IEC X LV switchgear & controlgear Assemblies (ASSEMBLIES) OLD IEC X LV switchgear & controlgear Assemblies (ASSEMBLIES) General rules (2009) Power switchgear and controlgear assemblies (2009) Distribution Boards for Ordinary pers Power switchgear and controlgear assemblies TTA and PTTA (Also used as a general rules standard) Distribution Boards for unskilled pers ASS. for construction sites ASS. for construction sites ASSEMBLIES for public networks ASSEMBLIES for public networks Busbar Trunkings Systems Busbar Trunkings Systems Compared to the old IEC X, the new IEC X standards aim at: Better covering all ASSEMBLIES, especially the ASSEMBLIES based on ASSEMBLY Systems Improving safety by clarifying or increasing many requirements IEC is to be read in conjunction with IEC , instead of IEC alone Tests identical to those in IEC do not need to be repeated Transitional periods may apply when implemented as regional, e.g. European (*), or national standards 10

11 IEC61439 Standard Time schedule in the European Union (in other countries, the transition period depends on national rules) EN years PSC-ASSEMBLY EN EN / (Ed1) years BTS EN / EN (Ed1) / EN (Ed1) Distribution boards EN / EN (Ed1) / EN (Ed1)?? 3 years? 3 years? 11

12 IEC &2 Standard Why a new standard? 80% of the ASSEMBLIES worldwide do not comply with the standard Requirements not always clear Role of Switchboard System manufacturer and Panel Builder not clear enough A Partially Type Tested ASSEMBLY (PTTA) concept abused and misused 12

13 IEC &2 Standard Main Changes Recognition of Original Manufacturer (Switchboard System manufacturer) and ASSEMBLY Manufacturer (Panel Builder) PTTA/TTA concepts replaced with (tested) ASSEMBLY Many clarified & reinforced requirements 13

14 Clear definitions of roles IEC &2 Standard ASSEMBLY Manufacturer (Panel Builder) Takes the responsibility for the final Assembly Carries out routine verifications Original Manufacturer (System manufacturer) Carries out the original design Carries out the design verifications that can be certified through a certification body (ASEFA, ASTA, KEMA, ) ASSEMBLY System Full range of mechanical & electrical components (functional units, switching devices, enclosures ) designed by the Original Manufacturer to be assembled according to his instructions Specifier (design office, End user, ) Specifies or selects the ASSEMBLY Certification body Original Manufacturer Assembly system Specifier Project Specification Assembly Manufacturer (Panel Builder) Tested assembly User 14

15 IEC &2 Standard Elimination of TTA and PTTA concepts Type Tested Assemblies Partially Type Tested Assemblies Tested ASSEMBLIES TTA: PTTA 7 type tests on the design 3 routine tests on the realization of each panel Calculations not clearly defined to justify not to do some type-tests 3 same routine tests Design verifications Mainly type-tests Or possibility for only some of the verifications under clear and strict conditions to do Comparison with a tested reference design (Design Rules) Calculations including safety margins Routine verifications Same as TTA in 10 items instead of 3 15

16 Elimination of TTA and PTTA concepts Characteristic to be verified Strength of materials and parts Degree of protection of enclosures Clearances and creepage distances Protection against electric shock & Integrity of protective circuits Incorporation of switching devices and components Internal electrical circuits and connections Terminals for external conductors Dielectric properties Temperature rise Short-circuit withstand strength Electromagnetic compatibility Mechanical operation Verification options available By testing By calculation By design rules YES NO NO YES NO YES YES YES YES YES NO NO NO NO YES NO NO YES NO NO YES YES NO NO YES YES YES YES YES YES YES NO YES YES NO NO 16

17 Clarified & reinforced requirements: Strength of materials and parts Following tests are compulsory: This looks at the suitability of plastic and metal parts to prove the long term capabilities of the equipment. Resistance to corrosion Properties of insulating materials Thermal stability Resistance of insulating materials to normal heat Resistance to abnormal heat and fire due to internal electric effects Resistance to ultra-violet (UV) radiation Lifting Mechanical impact (IK) Marking 17

18 Clarified & reinforced requirements: Current carrying All the tests (also short circuit) have to be made with the devices inside the assembly No more possibility to make a temperature rise with a heating resistance No device substitution The tests have to be made for each circuit alone and the complete assembly (including diversity factor) The verification by calculation is limited maximum 1600A and all components de-rated to 80% 18

19 Details of the IEC &2 Standard 19

20 IEC &2 Standard Type of requirements of the IEC &2 Rated characteristics definitions and other information to be stated by the ASSEMBLY Manufacturer to ensure compatibility with the User s needs and constraints Design Like creapage distance, IP definitions, etc Design verification Basically by inspecting the constructional requirements and by testing precisely defined representative samples Routine verification i.e. verification of each manufactured ASSEMBLY To confirm that the proofs of design verification are available and detect faults in materials and workmanship 20

21 Breakdown of IEC &2 into 10 user s Functions IEC &2 Standard Capability to operate the electrical installation Voltage stresses withstand capability Current carrying capability Short-circuit withstand capability Electro-Magnetic Compatibility Protection against electric shock Maintenance and modifying capabilities Ability to be installed on site Protection against risk of fire Protection against environmental conditions 21

22 IEC &2 Standard Capability to operate the electrical installation IEC &2 requirements Properly function, according to: The electrical diagram and the specifications by selecting, installing and wiring the appropriate switching devices. The specified operating facilities through accessibility and identification. Design Verification By inspection Impulse withstand voltage test of isolating distance for optional withdrawable units Routine verification Visual inspection Effectiveness of mechanical actuating elements and function test Schneider Electric offer Low Voltage complete Systems Functional units: Inst. Plate / Device / Front plate Full and transparent doors / shutting Human / switchboard interface 22

23 Voltage stresses withstand capability IEC &2 Standard IEC &2 requirements Insulation to withstand long-term voltages, transient and temporary overvoltages guaranteed through clearances, creepage distances and solid insulation Design Verification Measurement of clearances and creepage distances Power frequency dielectric test Impulse withstand voltage test, when clearances are greater than specified values Routine verification Visual inspection of clearances Power frequency dielectric test Schneider Electric offer High performance materials Polyfast interface Busbar supports 23

24 IEC &2 Standard Current carrying capability IEC &2 requirements Protect against burns by limiting excessive temperatures: when any single circuit is continuously loaded to its rated current and when any circuit is continuously loaded to its rated current multiplied by its rated diversity factor. Design Verification Temperature rise tests Or comparison with a tested reference design, under restrictive conditions Or, under very restrictive conditions, calculations with safety margins Routine verification Visual inspection Random verification of tightness Schneider Electric offer A complete range of main and distribution busbars (linergy) Prefabricated connections and distribution blocks Thermal rules and data Prefabricated connections Busbars Distribution blocks Thermal rules in catalogue 24

25 IEC &2 Standard Short circuit withstand capability IEC &2 requirements Withstand short-circuit thanks to short-circuit protective devices, shortcircuit coordination and capability to withstand the stresses resulting from short-circuit currents in all conductors Design Verification Short-circuit tests of the main circuit, including the neutral conductor, and of the protective circuit Or comparison with a tested reference design under restrictive conditions Routine verification Visual inspection Schneider Electric offer Current limiting Circuit Breakers Coordination between Circuit-Breakers and busbars Busbar support  Isc Assumed transient peak Isc Assumed steady peak Isc Limited peak Isc Tcc t 50 ka successful short-circuit withstand test on vertical busbars 25

26 IEC &2 Standard Electromagnetic compatibility IEC &2 requirements Properly function and avoid generation of EMC disturbances through incorporation of electronic devices complying with the relevant EMC standard and their correct installation Design Verification EMC tests according to product standards or generic EMC standards Routine verification None Schneider Electric offer Schneider Electric implementation rules Low electromagnetic fields radiating busbar trunking. 26

27 IEC &2 Standard Protection against electric shock IEC &2 requirements Clear specification of Basic insulation: hazardous live parts accessibility Fault protection: accessible conductive parts not hazardous, continuity of protective equipotential bonding Design Verification IPXXB test & verif. of insulating material Mechanical operation tests Verification of dielectric properties Measurement of resistance between conductive parts and PE terminal Short-circuit strength of protective circuit Routine Verification Visual inspection Random verification of tightness of the protective circuit connections Schneider Electric offer IPxxB and formxb (no direct access to hazardous live parts) Doors with locks Front plates with cut-out to operate the devices Use of high performance materials. Busbar supports 27

28 IEC &2 Standard Maintenance and modifying capabilities IEC &2 requirements Clear specification of capability or not to preserve continuity of supply without impairing safety during maintenance or modification through basic and fault protection and optional removable parts Design Verification IP tests Mechanical operation tests (especially for removable parts) Design Verification Effectiveness of mechanical actuating elements Check protection of persons against electric shocks Schneider Electric offer Removable or hinged front faces and plates IP2x and IPxxB compartments Insulated devices, distribution blocks and conductors Fixed, disconnectable and withdrawable Functional Units Insertion of FUs in any available space 28

29 Capability to be installed on site IEC &2 Standard IEC &2 requirements Withstand handling, transport, storage and installation constraints Be capable to be erected and connected Design Verification By inspection Lifting test, taken from IEC Routine Verification Number, type and identification of terminals for external conductors Schneider Electric offer Cable compartments Terminals for external conductors Busbar trunking feed units for switchboards Fishplates on main busbars Packing, transport and handling recommendations Feed unit Fish plates Cable compartment Terminals Handling and transportation recommendations 29

30 IEC &2 Standard Protection against risk of fire or explosion IEC &2 requirements Protect persons against the fire hazard: resistance to internal glowing faulty elements through selection of materials and various design Design Verification Glow wire test Special test according to IEC TR 61641, where specified Routine Verification None Schneider Electric offer Busbar supports compliant to glow-wire test Internal arc prevention and containment (no IEC61439 requirement) for Blokset and Okken Successful internal arc containment 30

31 IEC &2 Standard Protection against environmental conditions IEC &2 requirements Protect the Assembly against mechanical and atmospheric conditions through selection of materials and various design provisions Design Verification IP test IK test Corrosion test UV test (outdoor only) Routine Verification None Schneider Electric offer IP30 to IP55 switchboards Anti-corrosive treatment of enclosures IK07/8/10 switchboards Seismic risk and Marine compliant Okken switchboards (no requirements) Switchboard IK10 door test Okken switchboard seismic test 31

32 Using the IEC &2 Standard IEC &2 Standard As a Specifier (final User, or User s rep.) Specify ASSEMBLIES compliant to IEC Ask for complete certifications from a recognized certification body One single test certificate is not enough Select an ASSEMBLY Manufacturer able to: Comply with IEC &2 Help you to specify your needs Deliver routine verification reports 32

33 Using the IEC &2 Standard IEC &2 Standard AS an ASSEMBLY Manufacturer (Panel Builder) Help your customer to specify his needs Select truly certified ASSEMBLY systems Ask your supplier to train you with Design software Assembly and installation guides Mounting leaflets Quality inspection guide Maintenance and end user guides Design, manufacture and verify each ASSEMBLY in compliance with: The project specification The ASSEMBLY manufacturer s instructions 33

34 Using the IEC &2 Standard IEC &2 Standard Routine verifications to be provided by the ASSEMBLY Manufacturer (Panel Builder) for EACH Assembly degree of protection of enclosures; clearances and creepage distances; protection against electric shock and integrity of protective circuits; incorporation of built-in components; internal electrical circuits and connections; terminals for external conductors; mechanical operation. dielectric properties; wiring, operational performance and function 34

35 Specifying an ASSEMBLY ASSEMBLIES and the Standard IEC61439 are complex End Users and Specifiers as well as ASSEMBLY Manufacturer need to have clear specifications of the Assemblies Tools to specify according to IEC61439 Annex BB of IEC summarise the information that should be included in an assembly specification Schneider Electric Specifiers guide Covers the Annex BB of the standard Helps additionally Specifiers and Panel Builders to have a clear common understanding of the specified values 35

36 Schneider Electric worldwide expertise for safety and higher power availability Compliance with Standards Power availability Expertise Standards Schneider Electric LV offer Safety 36

37 Expertise Schneider Electric LV Assembly expertise throughout the Assembly life cycle Anticipation and pre-design: Anticipation and pre-design To measure the influence of the important technical parameters Precisely define materials characteristics Technical support To capitalize on experience to enlarge the product range. To determine the technical data of our products Customer support To achieve a specific customer requirement based on our existing products To Support a specific design for a dedicated customer business. End of life Operation Definition Design Installation Customer support Manufacturing Technical support 37

38 Expertise Schneider Electric LV Assembly expertise: method and tools Method: simulations based on tested configuration Extrapolation by simulation for other configurations Tools: Many years of experience In-depth knowledge of the behavior of components Design calculation software Extrapolation by simulation for other requirements Tested and modeled Configuration Extrapolation by simulation for other boundaries Finite elements software Schneider Electric Power Laboratories Schneider Electric Development centres 38

39 Expertise Schneider Electric LV Assembly expertise: an answer to customer requests Expertise fields: Mechanical Electrodynamics Thermal Internal arc Electromagnetic compatibility Seismic Insulation 39

40 Schneider Electric device expertise: Expertise 1,500 R&D team members in 5 countries Skill Materials Connectics Industrialisation Software Mechanisms Measurement Mechatronics Breaking-switching 40

41 Expertise Example of Schneider Electric expertise: Thermal Software Softher The aim of this tool: To meet standard requirements or specific end-user demands, in ensuring safe and reliable configurations Functions: To calculate heating and check busbar sizing of Schneider Electric switchboards and busbar trunking tap-off units To offer cooling solutions when the calculated temperature is too high To generate a report according to calculation results. 41

42 Expertise The Schneider Electric LV System for safety and more power availability The Schneider Electric LV system is a complete system Each element is designed to operate with the others Total coordination Lifetime operation and performance Solutions are tested in the worst conditions High performance materials Customer needs can change and evolve Evolution is ensured from the design stage Schneider experts can test and validate solutions. 42

43 Expertise The Schneider Electric LV System for safety and more power availability Schneider Electric has dozens of years of experience which is invested in all of our products Over 500 million devoted to research and development 6500 R&D specialists across 25 countries Experience in the most demanding fields Including oil & gas, marine, hospitals, chemical and nuclear etc. 43

44 Expertise Schneider Electric partnership support Training Advice, orders: -Catalogue -BOM Software On-Line support: -Customer care center Orders Design and implementation Guides: -Switchboard assembly guide -Installation manuals and user guides for circuitbreakers -Mounting leaflets -Catalogue Quality: -Quality inspection guide Assembly Design, orders: -Catalogue Software: -Thermal Software -Design software Technical information: -AutoCad library -Bar drawings library -Electrical installation guide -Technical booklets -Coordination tables On-Line support: -Customer care center Training Commissioning Training Guides: -Switchboard assembly & installation guide -Mounting leaflets Quality: -Quality inspection guide Operation and recycling Operation: -Customer guide -Maintenance and diagnostic guides Recycling: -Product environmental profile Training Specifications and tendering -type test files -specification forms -Pre-design software -catalogues -technical publications Training 44

45 Expertise Schneider Electric has the right services to support customers anywhere in the world 1700 dedicated people in 68 national call centres 1600 sales outlets 50 customer training centres 45

46 Working with Schneider Electric is your insurance for safety and more power availability LV Assembliescompliant to IEC &2 standard Power availability Expertise to support our system and our customers A complete LV System We are worldwide Expertise Standards Safety Schneider Electric LV offer 46