prisma plus the tested switchboard, complying with standard iec 60 439-1

Prisma Plus

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

Prisma Plus Tested switchboard Conf. V2- 04/04 - En 2

Contents

The functions of an electrical switchboard

The IEC 60439-1standard

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 60439-1

7 type tests performed by the manufacturer

3 routine tests performed by the panelbuilder

Switchboard builders and manufacturer, together for the safety challenge IEC 60439-1

Prisma Plus and the IEC 60439-1 standard : an international influence

The low voltage electrical switchboard


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


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 AWall-mount and floor standing enclosures up to 630 A

Contents


The IEC 60439-1 standard

The IEC 60439-1 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


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


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.


Forms : separations within an assembly

Form 1 Form 2a Form 3a Form 4a

Form 2b Form 3b Form 4b Definitions

Prisma Plus

Prisma PlusPrisma Plus Prisma PlusContents


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 60947-1 : general provisions IEC 60947-2/3 : circuit-breakers/switches IEC 60269-1 : low voltage fuses.

Switchboard construction standard : IEC 60439-1 : low voltage switchgear assemblies.

Installation standards : IEC 60364 : buildings electrical installation specific standards and rules to each country.

Contents


The tests of standard IEC 60439-1

7 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


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


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


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


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


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


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


Test n°6 (8-2-6) : mechanical operation

Results

Conditions

Endurance of material, guaranteeing the longevity of the various mechanisms.

Contents


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


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


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 62262 standard defines a IK code which gives the equipment capacity to resist to mechanical impacts , on all the enclosure surfaces.

Contents


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


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


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


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


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


Prisma Plus and IEC 60439-1 standard : an international influence IEC 60439-1 : the same standard for all the professionals of

switchboards

Prisma Plus complying with the IEC 60439-1 standard: an international dimension.

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Contents

prisma plus the tested switchboard, complying with standard iec 60 439-1

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