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Prisma Plus the tested switchboard, complying with standard IEC 60 439-1.

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Presentation on theme: "Prisma Plus the tested switchboard, complying with standard IEC 60 439-1."— Presentation transcript:

1 Prisma Plus the tested switchboard, complying with standard IEC

2 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 2 Contents The functions of an electrical switchboard The IEC standard Prisma Plus : a structured switchboard based on functional units Forms: partitioning Forms : separations within an assembly The minimum requirements to guarantee the safety of a LV switchboard The tests of standard IEC type tests performed by the manufacturer 3 routine tests performed by the panelbuilder Switchboard builders and manufacturer, together for the safety challenge IEC Switchboard builders and manufacturer, together for the safety challenge IEC Prisma Plus and the IEC standard : an international influence The low voltage electrical switchboard

3 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 3 The low voltage switchboard A vital link for electrical distribution and to provide a continual balance between:  the needs of safety and availability  and the constraints of reliability and maintenability of the installation. To satisfy the increasing needs of safety of people and equipment and availability of electrical power : its realization is not improvised… Definitions Safety Maintenability Reliability Availability Contents

4 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 4 The low voltage electrical switchboard Definitions Availibilty is the percentage of time during which the system functions correctly. MTBF (Mean Time Between Failure) average time between two failures of a reparable system is a means of characterizing the availibility. Maintainability is the aptitude of a system for being repaired quickly.La maintenabilité est l'aptitude d'un système à être réparé rapidement. MTTR (Mean Time To Repair) the average duration of repair is a means of characterizing maintainability. The safety is the aptitude of a system not to put the people in danger. Reliability is the aptitude of a system to function correctly as long as possible. MTTF (Mean Time To Failure) average time of good working before the first failure is a means of characterizing the reliability. Back

5 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 5 The functions of an electrical switchboard To group and protect against external influences the protection and control devices and all their electrical and mechanical connections. To inform the end-user on the state of his installation To protect the switchboard user against the risk of accidents (direct and indirect contact). To evolve with the activity. Definitions Cubicles up to 3200 A Wall-mount and floor standing enclosures up to 630 A Contents

6 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 6 The functions of an electrical switchboard Definitions Some of the components or specificities of the switchboard realize and/or guarantee its finalities, in functional term : The architecture of LV network in centralized distribution : It results in a cutting into various switchboard, wall-mount enclosures... Distributed geographically, which carry out the installation drawing. Then various areas are defined within the switchboard :  equipment  busbar  connection  auxiliary The distances from minimal insulation and safety must already be respected. The functional units :  allow to realize the electrical functions correspondint to the user ’s  each unit is intended to cover a function, for example : - the incoming of current in the switchboard - the protection of a feeder or a feeders whole - the motor control... The enclosure : It materializes electric volume and ensures simultaneously:  the protection of electrical materials which it contains against the external influences  the protection of people against electrical shocks (direct and indirect contacts). Back

7 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 7 The IEC standard The IEC standard gives general rules for switchboards construction to meet with safety and availability needs required by the application  guarantees the minimum level of safety of people and equipment  concerns the low-voltage switchgear and controlgear assemblies for the power distribution and control.  states : - the service conditions (temperature...) - the construction requirements (IP, IK, forms,...) - the tests requirements So conformity to the standard is, for the end user, an insurance on switchboard realization quality. Contents

8 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 8 Prisma Plus : a structured switchboard based on functional units This modular design brings much clearness to the switchboard :  incoming unit  current distribution units  feeder units  distribution units  connection units  communication units Definitions Contents

9 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 9 IEC Standard and Prisma Plus : a structured switchboard based on functional units Incoming units : incoming circuit breaker (Masterpact, Compact NS, Interpact INS...). Definitions Current distribution units : busbars (Linergy, flat bars, Powerclip...). Feeder units : feeders circuit-breaker and contactors (Compact NS, Interpact INS, switch INV, modulars devices...). Connection units : insulated flexible bars, prefabricated junction Communication units : measurement devices, BP, Powerlogic, Digipact (Human/swichboard Interface). Distribution units : distribution block (Polypact, Polybloc, Multiclip, terminal block...). Back Each device is part of a functional unit comprising:  a dedicated mounting plate for device installation  a front plate to block direct access to live parts  prefabricated busbar connections  systems for on-site connections  running of cables and auxiliary wires

10 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 10 Forms: partitioning Contents In most installations, Prisma Plus cubicles do not require partitioning, Schneider Electric offering options and features that go well beyond the recommendations of the standard :  front plates requiring a tool to be removed  doors providing access to live parts are keylocked  systematic installation of terminal shields on Compact NS circuit breakers and Interpact INS and INV switch-disconnectors  upstream and downstream terminals on the incoming device are covered The protection of people and equipment is ensured on origin However, Prisma Plus offers different levels of partitioning to create separations inside the cubicles and thus create Form 2,3 and 4, as defined by the standard.

11 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 11 Forms : separations within an assembly Form 1 Form 2a Form 3a Form 4a Form 2b Form 3b Form 4b Definitions Prisma Plus Contents

12 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 12 Forms : separations within an assembly Form 1 : no separation within the enclosure. Definitions Form 2a : the functional units are separated from busbars, but not the terminals Form 2b : the functional units and terminals are separated from the busbars. The terminals are not separated from each other. Form 3a : the functional units are separated from each other and from the busbars, but not the terminals. Form 3b : the functional units are separated from each other and from the busbars. Terminals are separated from busbars, but are not separated from each other Form 4a : the functional units are separated from each other and from the busbars. Terminals which are in the same compartment as the associated functional unit are separated from each other Form 4b : the functional units are separated from each other and from the busbars. Terminals are separated from each other and from the functional units. Back

13 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 13 The minimum requirements to guarantee the reliability of a LV switchboard First of all, it must comply with standards : Structural standards for incorporated switchgear :  IEC : general provisions  IEC /3 : circuit-breakers/switches  IEC : low voltage fuses. Switchboard construction standard :  IEC : low voltage switchgear assemblies. Installation standards :  IEC : buildings electrical installation  specific standards and rules to each country. Contents

14 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 14 The tests of standard IEC type tests :  n°1 - temperature rise limits  n°2 - dielectric properties  n°3 - short-circuit withstand  n°4 - protective circuit effectiveness  n°5 - clearances and creepage distances  n°6 - mechanical operation  n°7 - degree of protection 3 routine tests :  n°8 - overall inspection : cabling, electrical operation  n°9 - insulation/dielectric test  n°10 - protection measures. They guarantee that the switchboard complies with standard and confirm its characteristics: Contents

15 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 15 7 type tests performed by the manufacturer The aim of these tests is to confirm the switchboard characteristics. The 7 type tests are carried out on most difficult and unfavourable system Prisma Plus configurations. The assembled and cabled switchboards are made up of their usual components, connection system…, equipped with Merlin Gerin and Telemecanique switchgear and assemblied and installed according to inductrial standards The tests are conducted either in approved laboratories (Asefa, Kema, Lcie,…), or in Schneider Electric ones Contents

16 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 16 Test n°1 (8-2-1) : Temperature rise limits Guarantees the safety and reliability of the switchboard, by avoiding problems such as :  connection damages  reduction in insulation performances  risk of burn for maintenance operators  electronic components damages  faulty operation of the devices : inopportune release Results Conditions Contents

17 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 17 Test n°1 (8-2-1) : Temperature rise limits Conditions Complying limits (temperature rise limits) :  when the temperature has stabilised, the temperature rise should not exceed limits admitted by materials or cause any burn :  70 °C for terminal for external insulated conductors  15 °C or 25 °C, according to material type, for manual operating means  30 °C or 40 °C for accessible external enclosures and covers Tests progress:  several switchboard configurations  equipped with Merlin Gerin and Telemecanique switchgear  +10 °C< ambient air temperature<+40 °C  switchgear loaded to its rated current, multiplied by the rated diversity factor Back

18 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 18 Test n°1 (8-2-1) : Temperature rise limits Results The tests conducted with Prisma Plus have recorded temperature rises less than or equal to those stipulated by the standard. Back

19 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 19 Test n°2 (8-2-2) : dielectric properties Guarantees the switchboard safety and reliability, to avoid problems such as :  electrical arc generation  insulation performance decreasing  connection damages Results Conditions Contents

20 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 20 Test n°2 (8-2-2) : dielectric properties Conditions Complying limits :  No arc flash-over or insulator perforation are observed. Tests progress :  the test voltage is applied between all live parts and interconnected exposed conductive parts (frame), as well as between each pole and all the other connected poles  dielectric test voltage : V for a rated insulation voltage = 1000 V for busbars in cubicle and rear busbars in enclosures V for a rated insulation voltage = 3000 V according to the type of busbars in enclosure V for a rated insulation voltage = 2500 V according to the type of busbars in enclosure  test duration :1 minute. Back

21 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 21 Test n°2 (8-2-2) : dielectric properties Results No arc flashover or insulator perforation for the test voltage following the rated voltage of busbars Back

22 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 22 Test n°3 (8-2-3) : short-circuit withstand This test simulates an incident which could occur on site Withstanding the short-circuit currents is :  to avoid danger (rupture and projections of components, arc generation and propagation outside the switchboard,...)  it also means the installation can be quickly put back into operation after the incident Results Conditions Contents

23 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 23 Test n°3 (8-2-3) : short-circuit withstand Conditions Complying limits :  the main conductors and the insulating parts must retain their insulation and mechanical withstand characteristics (lenght, cross- section, dielectric properties,…). Tests progress :  the short-circuit tests are carried out by using bolted connections at the ends of the main or secondary busbars :  25 kA rms/1 sec. for Prisma Plus System G  85 kA rms/1 sec. for Prisma Plus System P Back

24 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 24 Test n°3 (8-2-3) : short-circuit withstand Results After a short-circuit test, the Prisma Plus main conductors and the insulating parts keep on their insulation and mechanical withstand characteristics maximum rated short-time currents on busbars :  Prisma Plus System G : Icw 25 kA rms/1 s  Prisma Plus System P : Icw 85 kA rms/1 s. the installation can be quickly put back into operation after a simple inspection Back

25 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 25 Test n°4 (8-2-4) : effectiveness of the protective circuit The effectiveness of the protective circuit is verified by two tests :  resistance measurement of the connection between the exposed conductive parts and the protective circuits  short-circuit withstand performed between the protective conductor and the nearest phase conductor. Results Conditions Contents

26 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 26 Test n°4 (8-2-4) : effectiveness of the protective circuit Conditions Complying limits :  the main conductors and the insulating parts must retain their insulation and mechanical withstand characteristics (lenght, cross- section, dielectric properties,…). Tests progress :  the short-circuit tests are carried out by using bolted connections at the ends of the main or secondary busbars :  15 kA rms/1sec. for Prisma Plus System G  51 kA rms/1sec. for Prisma Plus System P. Back

27 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 27 Test n°4 (8-2-4) : effectiveness of the protective circuit Results After the test, continuity and short-circuit withstand of the protective circuit, whether it consists of a separate conductor or frame, is not significantly impaired Continuity and short-circuit withstand of the Prisma Plus protective circuit comply with the standard. Back

28 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 28 Test n°5 (8-2-5) : clearance and creepage distances Results Conditions Clearance control : shortest distance between two conductive parts. Creepage distance control : shortest distance along the surface of an insulating material between two conductive parts. Contents

29 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 29 Test n°5 (8-2-5) : clearance and creepage distances Conditions The minimum clearance in air depends on the rated impulse withstand voltage and the degree of pollution in the switchboard. The values given in the standard apply to bare live conductors and the switchgear. The minimum creepage distance depends on the rated insulation voltage, the degree of pollution and the insulating material group separating live parts. Back

30 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 30 Test n°5 (8-2-5) : clearance and creepage distances Results The tests carried out on typical Prisma Plus configurations, equipped with standard main busbars, validate compliance with minimum clearances and creepage distances for a voltage of 1000V, degree of pollotion 3, IIIa material group. :  minimum clearance : 14 mm  minimum creepage distance : 16 mm. Back

31 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 31 Test n°6 (8-2-6) : mechanical operation Results Conditions Endurance of material, guaranteeing the longevity of the various mechanisms. Contents

32 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 32 Test n°6 (8-2-6) : mechanical operation Conditions The standard requires that 50 operating cycles be carried out. The mechanical operation test is carried out on an assemblied switchboard. Verification of locking mechanisms are included in this range of tests. Back

33 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 33 Results After 50 operating cycles, the interlocking mechanisms and other moving parts of the switchboard preserve their initial properties: - operation, - operating force. Some more solicited moving parts of Prisma Plus have passed until operating cycles (door handles, hinges…). Test n°6 (8-2-6) : mechanical operation Back

34 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 34 Test n°7 (8-2-7) : degree of protection Results Conditions The tests carried out define the capacity of an equipped switchboard to :  protect persons against contact with live parts  protect equipment against penetration of solid objects and liquids  protect equipment against external influences such as impacts (shocks). Contents

35 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 35 Test n°7 (8-2-7) : degree of protection Conditions Tests for solid objects penetration (test finger, stem and wire). Tests for water ingress (jets of water, drop vaps). Back

36 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 36 Test n°7 (8-2-7) : degree of protection Results Results of tests confirm the characteristics of Prisma Plus switchboard: IP30 to IP55 and IK7 to IK10 according to the different configurations. Prisma Plus system P : - IP30/31/55 - IK07 with fixed panelling frame - IK08 with door IP30 - IK10 with door IP55. Prisma Plus system G :  enclosure : - IP30/31/43 - IK07 without door - IK08 with door  IP55 enclosure : IK10  Pack enclosure: - IP30 - IK07 without door - IK08 with door. Back

37 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 37 The IP degrees of protection : (IEC 60529/EN 60529) 1st digit:  protection of persons  protection against solids. 2nd digit :  protection against liquids. Additional letter (optional) : protection of persons against contact with live parts  A : protect againts access of the back of the hand  B : protect against access of fingers Ø 12 mm  C : protect against access of a tool diameter 2.5 mm  D : protect against access of a tool diameter 0.1 mm Definitions Contents

38 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 38 Degree of protection The IEC standard (02/ 2001) gives, by the IP code, the different degrees of protection provided by an electrical enclosure. The IP code is described by 2 specific digits; an additional letter, in option, can complete the IP code when the real protection of persons against contact with live parts is better than the protection given by the first digit:  the 1st digit gives the level of protection of equipment against penetration of solid objects and protection of persons  the 2nd digit gives the level of protection of equipment against penetration of liquids. Definitions Additional letter :  it is used only when the effective protection of persons is better than the one given bythe first IP digit  in case of only protection of persons is needed, the 2 IP digits are replaced by x. Example : IPxxB. Back

39 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 39 IK code : 2 digits giving the level of shock energy, in Joules :  IK 01 : 0,14  IK 02 : 0,2  IK 03 : 0,35  IK 04 : 0,5  IK 05 : 0,7  IK 06 : 1  IK 07 : 2  IK 08 : 5  IK 09 : 10  IK 10 : 20. Degree of protection : IK (IEC 62262) The IEC standard defines a IK code which gives the equipment capacity to resist to mechanical impacts, on all the enclosure surfaces. Contents

40 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 40 3 routine tests performed by the panelbuilder The 3 routine tests, easily and rapidly performed, must be carried out by the panelbuilder. :  overall inspection according to the mounting instructions and technical documents (right device ratings, tightening torques)  insulation checking by a dielectric test  checking of protective measures and of the electrical continuity of the protective circuits. They complete the 7 manufacturer type tests and guarantee professionnalism and responsability of panelbuilder. Schneider Electric supplies a full range of tools for assistance:  Quality inspection guide  switchboard assembly and installation guide  Prisma Plus System P and G assembly guides Contents

41 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 41 Test n°8 (8-3-1) : cabling, electrical operation Results Conditions Check of mechanical actuating elements, interlocks,... effectiveness Check of connections adequate contact, especially screwed and bolted connections. Check of proper laying of conductors and cables and proper mounting of device Contents

42 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 42 Test n°8 (8-3-1) : cabling, electrical operation Conditions Check of conformity with:  drawings, circuit and wiring diagrams  cabling (power and auxiliary connection)  cabling quality (cross-section, crimping...)  information and marking (cables and devices). Visual inspection :  degree of protection, creepage distances and clearancess  technical data document (diagrams, characteristics...). Mechanical and electrical functioning test :  check of cabling and most sensitive parts of the switchboard : (mechanical control facilities,interlocks...). Back

43 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 43 Test n°8 (8-3-1) : cabling, electrical operation Results The design of the switchboard, a structure based on functional units, insures conformity to this test. Schneider Electric gives the basic rules of assembly and installation in its documentation for assistance Back

44 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 44 Test n°9 (8-3-4) : insulation resistance / (8-3-2) : dielectric test Results Conditions No arc flash-over or insulator perforation must be observed between the live parts each other and between the live parts and the conductive structural parts. Contents

45 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 45 Test n°9 (8-3-4) : insulation resistance / (8-3-2) : dielectric test Conditions 2 possibilities of test depending on the panelbuilder ’s means  either insulation measuring (8-3-4)  or dielectric test (8-3-2). all electrical equipment shall be connected for the test, except those apparatus which are designed for a lower test voltage the test voltage is applied : - between each pole and interconnected exposed conductive parts - between each pole of main circuit and the other poles - between each auxiliary control circuit and main circuit and exposed conductive parts - between supply and withdrawable part of a switchgear. Insulation test (8-3-4) :  insulation measurement using an insulation measuring device at a voltage of at least 500V. Dielectric test (8-3-2) :  for a rated operational voltage of 240/400 V, the dielectric test voltage of 2500 V must be applied during 1 s. Back

46 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 46 Test n°9 (8-3-4) : insulation resistance / (8-3-2) : dielectric test Results Verification of insulation resistance (8-3-4) The test is passed if there is no perforation or flashover between the different tested parts Dielectric test (8-3-2) The test is passed if the insulation resistance between circuits and exposed conductive parts is at least 1000 Ohms/V.. The standardization of the distribution and conenctions is the best guarantee. Back

47 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 47 Test n°10 (8-3-3) : protective measures Results Conditions Checking of protective measures and of the electrical continuity of the protective circuits for metallic assemblies Contents

48 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 48 Test n°10 (8-3-3) : protective measures Conditions Visual inspection :  Checking of protective measures against direct and indirect contacts  Checking of the electrical continuity of the protective circuits for metallic assemblies (screwed and bolted connections shall be checked for adequate contact) possibly by random tests. Back

49 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 49 Test n°10 (8-3-3) : protective measures Results Compliance of mechanical and electrical assembly instructions guarantees good electrical continuity of protection circuits. Back

50 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 50 Panelbuilder and manufacturer, together to offer maximum safety and realibility Manufacturer :  products tested in real configurations  detailed instructions for fautless construction. Installer :  it has to its disposal informations, by means of tools of switchboard assembly and installation guide (catalogs, internet)  confidence in products and swichboards systems, the result of many years of experience A shared success :  this complementarity must fall under the duration to consolidate our professionalism. Customers advantages Contents

51 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 51 Panelbuilder and manufacturer, together to offer maximum safety and realibility Panelbuilders (and installators’ workshops) :  they complete a work of quality, simply  they minimize the risk related to their responsibility for realization of a switchboard of which they know and ensure the level of safety  they carry out very simply the conformity to the standard, therefore CE marking  they develop their professionalism by making known it  they are different from the other panelbuilders  they profit from the transfer of Schneider Electric ’s experiment and tools Customers advantages Installators :  for them, a certified switchboard is the guarantee of the safety of installation and the good completion of work  it is also the certainty to fulfill the user ’s requirements  they minimize the risk related to their responsibility for installation  they show professionalism. Users :  They have the certainty to have a switchboard ensuring - the safety and whose the quality is proven - maintenance and evolutivity easy thanks to the prefabrication and the standardization of the components  They are ensured of the equipment and components perennity.  They minimize the risks related to their responsibility for exploitation Specifiers/consultants :  For them it is the certainty to prescribe a switchboard which ensures the level of safety required by the user. Back

52 Prisma Plus Tested switchboard Conf. V2- 04/04 - En 52 Prisma Plus and IEC standard : an international influence IEC : the same standard for all the professionals of switchboards Prisma Plus complying with the IEC standard: an international dimension. UL IEC Contents


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