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