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

Prisma Plus
the tested switchboard,
complying with standard IEC 60 439-1
Contents
 The low voltage electrical switchboard
 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
Prisma Plus Tested switchboard Conf. V2- 04/04 - En
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The low voltage switchboard
A vital link for electrical distribution
 To satisfy the increasing needs of safety
of people and equipment and availability
of electrical power :
its realization is not improvised…
Safety
Reliability
Availability
Maintenability
 and to provide a continual balance between:
 the needs of safety and availability

Definitions
Prisma Plus Tested switchboard Conf. V2- 04/04 - En
and the constraints of reliability and maintenability of the installation.
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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
Prisma Plus Tested switchboard Conf. V2- 04/04 - En
Wall-mount and floor standing
enclosures up to 630 A
Cubicles up to 3200 A
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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
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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
Prisma Plus Tested switchboard Conf. V2- 04/04 - En
Contents
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Forms: partitioning
 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.
Contents
Prisma Plus Tested switchboard Conf. V2- 04/04 - En
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Forms : separations within an assembly
 Form 1
Definitions
Prisma Plus Tested switchboard Conf. V2- 04/04 - En
 Form 2a
Prisma Plus
 Form 2b
 Form 3a
Prisma Plus
 Form 4a
Prisma Plus
 Form 3b
Prisma Plus
 Form 4b
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The minimum requirements to guarantee the reliability
of a LV switchboard
First of all, it must comply with standards :
 Switchboard construction standard :
 IEC 60439-1 : low voltage switchgear assemblies .
 Structural standards for incorporated switchgear :
 IEC 60947-1 : general provisions
 IEC 60947-2/3 : circuit-breakers/switches
 IEC 60269-1 : low voltage fuses.
 Installation standards :
 IEC 60364 : buildings electrical installation
 specific standards and rules to each country.
Contents
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The tests of standard IEC 60439-1
They guarantee that the switchboard complies with standard and
confirm its characteristics:
 7 type tests :
 3 routine tests :
 n°1 - temperature rise limits
 n°8 - overall inspection :
cabling, electrical operation
 n°2 - dielectric properties
 n°9 - insulation/dielectric
 n°3 - short-circuit withstand
test
 n°4 - protective circuit
 n°10 - protection measures .
effectiveness
 n°5 - clearances and creepage
distances
 n°6 - mechanical operation
 n°7 - degree of protection
Contents
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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
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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
Conditions
Results
Prisma Plus Tested switchboard Conf. V2- 04/04 - En
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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
Conditions
Results
Prisma Plus Tested switchboard Conf. V2- 04/04 - En
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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
Conditions
Results
Prisma Plus Tested switchboard Conf. V2- 04/04 - En
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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.
Conditions
Results
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Test n°5
(8-2-5) : clearance and creepage distances
 Clearance control : shortest distance between two conductive parts.
 Creepage distance control : shortest distance along the surface of an
insulating material between two conductive parts.
Conditions
Results
Prisma Plus Tested switchboard Conf. V2- 04/04 - En
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Test n°6
(8-2-6) : mechanical operation
 Endurance of material, guaranteeing the longevity of the various
mechanisms.
Conditions
Results
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Test n°7
(8-2-7) : degree of protection
 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).
Conditions
Results
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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




Definitions
Prisma Plus Tested switchboard Conf. V2- 04/04 - En
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
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Degree of protection :
IK (IEC 62262)
 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.
 The IEC 62262 standard defines a IK code which gives the equipment
capacity to resist to mechanical impacts , on all the enclosure surfaces.
Contents
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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
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Test n°8
(8-3-1) : cabling, electrical operation
 Check of mechanical actuating elements, interlocks, ... effectiveness
 Check of proper laying of conductors and cables and proper mounting of
device
 Check of connections adequate contact, especially screwed and bolted
connections.
Conditions
Results
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Test n°9
(8-3-4) : insulation resistance / (8-3-2) : dielectric test
 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.
Conditions
Results
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Test n°10
(8-3-3) : protective measures
 Checking of protective measures and of the electrical continuity of the
protective circuits for metallic assemblies
Conditions
Results
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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
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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.
IEC
UL
IEC
IEC
IEC
IEC
Contents
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