low voltage switchboard specs

8/12/2019 Low Voltage Switchboard Specs

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Specifications for Tender 238950010.doc

Last update : 2014-02-14 - 1 -

General Specification Low Voltage

Switchboard up to 4000A

Specifications file for Prisma P


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Table of contents:

1. Low Voltage switchboard general rules p. 3

2. Original Manufacturer requirements p. 3

3. ssembl! Manufacturer requirements p. "

". #witchboard design requirements p. "

$. #witchboard operation p. $

%. #witchboard technical requirements p. $

&. #witchboard life c!cle for a sustainable de'elopment p. (

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1. Low Voltage switchboard general rulesThis document describes the general rules to guarantee the maximum level of quality andperformances for a Lo !oltage "itchboard#$n the aim to reach this requirement% the entire equipment must be in appliance according to thespecifications defined in the )*+ #tandard: %1"3,-12

The $&' (14)*-1+2 applies to Lo !oltage "itchgear and controlgear assemblies for avoltage hich does not exceed 1000! in alternative current at frequencies not exceeding 1000,% or for 1.00 ! in /'#

The #tandard )*+ %1"3,-12 clearly defines the type of verifications design verification androutine verification that must be conducted by both organisations involved in final conformity ofthe solution: the Original Manufacturerguaranteeing assembly system3 design and thessembl! Manufacturerho is responsible for the final conformity of the Lo !oltage"itchboard#

This standard is also applicable for all ssemblies intended for use in connection ith the

generation% transmission% distribution and conversion of electric energy% and for the control ofelectric energy consuming equipment#

To guarantee the installation consistency during the sitchboard life cycle% the installationsystem and the sitchgears must be supplied by the same manufacturer#

2. Original Manufacturer requirementsTo be compliant ith standard $&' (14)*-1+2 the 5riginal 6anufacturer carries out theoriginal designand the design 'erificationsespecially for the folloing most importantfunctions that have to be certified through an independent certification body "&7%8 for the

most critical configurations:1# !oltage stress ithstand capability: measurement of clearances and creepagedistances% poer frequency dielectric test#

2# 'urrent-carrying capability: temperature rise tests

)# "hort-circuit ithstand capability: short-circuit tests $cc and $c of the main circuit%including the neutral conductor% and the protection circuit

4# 9rotection against electric shoc: verification of insulating materials

.# 9rotection against fire or explosion haard: glo ire test

(# 6aintenance and modification capability: $9xx; test and 6echanical operation testsespecially for removable parts

test according to $&'(22(2 + 'orrosion test

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3. ssembl! Manufacturer requirementsTo complete the standard requirement% the ssembly 6anufacturer panel builder has toachieve routine 'erifications.,ereafter details of the routine verifications to be performed by the ssembly 6anufacturer:

1# /egree of protection of enclosures through visual inspection

2# 'learances and creepage distances through visual inspection

)# 9rotection against electric shoc and integrity of protective circuits through visualinspection of basic and fault protection also random verification of tightness of theconnections of protective circuit

4# $ncorporation of built-in components through visual inspection

.# $nternal electrical circuits and connections through visual inspection and also randomverification of tightness

(# Terminals for external conductors through number% type and identification of terminals


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Electrical distribution and architecture7or safety reasons and especially if the door is opened during the sitchboard oring% allbusbars have to be covered by barriers onto the hole perimeter of the busbars one#To achieve that requirement% the sitchboard specification must comply ith the partitioningrules at the minimum level of form 2#

To supply electricity inside the sitchboard% the installation of distribution blocs systems% using

spring terminal technology $9xx; compliant% ensures the maximum protection of people#

To simplify the implementation in compliance ith the $&' (14)* 1+2% the original manufacturershould supply prefabricated connections that are perfectly rated and coordinated to or iththe devices#

!ertical distribution systems should be designed to allo tightened connection by front accessonly# ,oriontal and !ertical distribution system should be designed to allo connection ithself breaing nuts all along the length thans to a continuous connection trac and this ithoutany drilling#7or higher readability of distribution% horiontal busbars should be designed ith only one singlebar per phase#7or future evolution in the sitchboard% busbars should allo the possibility to add all outgoersrequired ithout any disassembly#

Frae!or" and cover panels$n order to facilitate the access ithin the sitchboard for the maintenance% its covering panelsmust be dismountable on all surfaces hat ever the $9 degree#"itchboards associations should be possible in all directions ithout any impact on the $9 leveland hen upgrading the maintenance of the original performance levels is guaranteed# Thesitchboard should be easily combined ith sitchboards already in service#

;y design the system should ensures electrical continuity of moving parts ithout additional

earthing braids#

$. #witchboard operation/ue to the constant evolutions of the electrical needs for the buildings or for the factories% thedistribution sitchboards must have the capacity to follo those evolutions#

The sitchboard offer must include dedicated components affording the ad@unction of one orseveral enclosures and cubicles on the exploitation site#

$n order to facilitate the current maintenance% e#g# infra red measurement% the devices one has

to be accessible in one operation#

&volution of the number of outgoers of sitchboard can be done in a functional unit spare placeithout having to add extra ne upstream connection to the main distribution busbar

7or demanding service continuity applications% upgrading of sitchboard in term of outgoersextensions can be made in service in unequipped reserved spaces

The final customers ill have the possibility to obtain some spare parts ten years after the endof commercialisation of the sitchboard offer in order to be able to replace some componentsfor maintenance or evolution needs#

%. #witchboard Technical 0equirements )*+ %1"3,-12;esides the specifications detailed from the chapter 1 to .% the sitchboard functions andcharacteristics listed belo are sub@ect to an agreement :

the 5riginal 6anufacturer guarantees the design of the assembly system%

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the ssembly 6anufacturer% is responsible for the final conformity of the sitchboard#

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&. #witchboard life c!cle for a sustainable de'elopmentll the materials of the sitchboard should be recyclable at least at *0A#

$t should be in conformity ith the Bo," and B&', directives#

Last update : 2014-02-14- = -

low voltage switchboard specs

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