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Crabtree - LV/MV Distribution Products - Forms of Separation & Application

Forms of Separation - Form 1 No Separation - Form 2 Separation of Busbars - Form 3 Not Terminations - Form 4 Including their Terminations

Sivacon S4

The Sivacon S4 energy distribution concept consists of full galvanised chromed sheet steel frames, of sturdy self standing design, flush or wall mounted. Sivacon S4 low voltage power distribution are constructed in accordance to a modular design system by means of flexible assembly kits and can be combined to meet a wide range of power distribution needs.

Assembly Kits with SENTRON 3WL

  • Rated current 630-3200A
  • 3 pole & 4 pole
  • Withdrawable & fixed mounted design
  • Copper assembly kits

Assembly Kits with SENTRON 3KA & 3KL

  • SENTRON 3KL5/6 (LBS) switch disconnectors. Rated current up to 630A
  • SENTRON 3KL7/3KA7 (LBS) switch disconnectors. Rated current up to 1250A
  • 3 pole & 4 pole
  • Fixed mounted design
  • Copper assembly kits
  • Door coupling rotary drive

Assembly Kits with SENTRON 3VL & 3VT MCCBs

  • 3 Pole & 4 Pole
  • Plug in & fixed mounted design
  • Copper assembly kits

Assembly Kits with built in installation devices

  • Modular spacing - 24 with 600mm cubicle width - 36 with 800mm cubicle width
  • 150mm or 200mm matrix
  • Depth-adjustable multi profile busbar (AL 35mm)
  • Siklip raid wiring system

Crabtree MCCB Panelboards

Powerstar VM160

Crabtree are pleased to introduce the next generation of their UK designed and manufactured Powerstar panel board range. The new addition to the family, Powerstar VM160, includes a number of new innovations and user friendly features.

New Current Ratings:

  • Incoming ratings are expanded to 800A
  • Standard outgoing circuit breakers have been increased to 160A
  • Additional add-on units are available to carry oversized devices up to 250A

New Device Technology:

  • New Powerstar ‘VM’ range of MCCBs
  • Increased current ratings & breaking capacities up to 55kA @ 415V
  • Enhanced range of easy fit accessories
  • MCCBs utilising Siemens technology

Additional Technology:

  • Easy wire meter options
  • Std or MID metering options
  • Earth leakage kits
  • Overvoltage protection

Forms of Separation:

  • Form 3b Type 2
  • Form 4b Type 6 Group Mounted

Key User Benefits:

  • Easy product selection
  • Reduced on-site assembly times
  • Open cableways to provide greater access when cabling

Environmental Considerations:

  • RoHS Compliant
  • WEEE Complaint
  • BIM data available

Additional Information:

  • Paint finish, epoxy powder, light grey RAL 7035
  • IP3X (door closed)
  • Designed & manufactured in the UK to BS EN 61439-2:2009

Powerstar 250

Current Ratings:

  • 400A & 630A Panelboards
  • Main units are available with 2, 4 or 6 outgoing ways suitable for 7T2 250A TP MCCBs
  • 8-way add on unit suitable for 250A MCCBs
  • 4, 8 or 12-way add on units suitable for SP & TP 7PBGG 125A MCCBs

Device Technology:

  • 7T2 250A MCCBs up to 65kA
  • 7PBGG MCCBs up to 25kA
  • MCCBs utilising Siemens technology

Additional Technology:

  • Std or MID metering options
  • Earth leakage kits
  • Overvoltage protection

Forms of Separation:

  • Form 3b Type 2

Environmental Considerations:

  • RoHS Compliant
  • WEEE Complaint

Additional Information:

  • Paint finish, epoxy powder, light grey RAL 7035
  • IP3X (door closed)
  • Designed & manufactured in the UK to BS EN 61439-2:2009

Forms of Separation

As described in BS EN 61439-1 & -2. the Forms of Separation comprise four levels as detailed above. The various methods of achieving separation can involve sleeving the busbars inside a separate box or a combination of both methods.

Cost Effective Specification

In order to gain maximum benefit from the standard, it is necessary to consider the application for which the switchboard is required as well as the appropriate level of separation for the environment in which it is to be installed.

For example, a Form 4 switchboard may be appropriate where general access is permitted to the switch room. However, where the switchboard is in a locked substation with access restricted to qualified personnel, a lesser degree of separation may be more appropriate.

Typical Applications

Form 1 – No separation

Typical applications are places where the switchboard is in a secure location and where failure of the switchboard will cause little or no additional disruption to other areas being fed by the switchboard.

Form 2 – Separation of busbars from functional units

Applications may well be the same as Form 1, but where it is important that a fault in the switchboard need not affect all functional units being fed from the same busbar system.

Form 3 – Separation of busbars from functional units and the functional units from one another but not their terminations

Should be applied where it is important to provide protection from internal live parts and where failure of functional units being fed from the same busbar would cause unacceptable disruption.

Form 4 – Separation of busbars from functional units and the functional units from one another including their terminations

Should be applied where it is important to provide protection from internal live parts and where failure of functional units being fed from the same busbar would cause unacceptable disruption. Because all the terminations are separated, it is possible to isolate and work on a single functional unit.

Click the PDF image to view the technical information in full

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Electrium Sales Ltd - Crabtree
Commercial Centre
Lakeside Plaza, Walkmill Lane
Bridgtown, Cannock
WS11 0XE

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Tel: 01543 455010
Fax: 01543 455011

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