System 4 Low Voltage Switchboards

 - Rated operational voltage Ue 440V

 - Rated insulation voltage Ue 690V

 - Rated frequency Ue 50Hz

 - Rated current horizontal bushbars 1250-4000A

 - Rated short time with stand current 50kA 3s


 - Type tested factory built assembly to BS EN 60439: Part 1

 - Environment protection IP312 to IP54 to BS EN 60529

 - Internal seperation Form 4 type 5 to BS EN 60439: Part 1

 - Front or rear access cabling versions

 - Compact construction, unrivalled stacking density


Packaged Substations

  • Indoor packaged substations comprise of a “SYSTEM 4” low voltage switchboard coupled to one or more dry type, air colled, cast resin transformers to IEC 60076/BS EN 60076 (formerly BS 171)
  • Ratings 500-2500kVA are available with enhanced ratings possible, by forced cooling with the addition of integral fans
  • The standard primary and secondary windings are 11kV and 433 Volt respectivelky, connected in Delta/Star, but other primary and secondary voltages are available
  • The packaged substation can be in various physical arrangements, to suit the requirements of individual installations

M-Pact Air Circuit Breakers

  • Incorperation of the M-Pact 2 withdrawable Air Circuit Breaker into System 4 switchboards offers state of the art circuit protection and system management together with reliability and performance with which the name M-PACT has always been associated.
  • 3 or 4 Pole configurations
  • ASTA, KEMA & LOVAG certified in accordance with IEC 947-2/BSEN60947

Depending on the selected type, the M-PRO protection relays offer the following features:

 - Earth fault protection

 - 12t Cropping

 - Neutral Protection

 - Thermal memory

 - Communication

 - Trip History and Indication

 - Manual or Automatic Reset

 - Watch dog in case of microprocessor malfunction

 - Plant Associated Memory Module

 - Outputs

 - Programmable Inputs

 - Load Monitoring

 - Overload Protection

 - Short Circuit Protection


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