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Category: Lucy MV Distribution Switchgear Product Selection

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Lucy Switchgear
MV Distribution Switchgear - Product Selection

MV Distribution Switchboard

For optimum profitability and productivity, Lucy Switchgear’s SABRE range of extensible equipment can offer cost-effective solutions providing custom built switchboards for a wide variety of commercial and industrial applications including transformer substations, ring distribution networks, HV connections to industrial and commercial buildings.

Custom built switchboards bespoke switchboards
Typical Switchboard Configuration

Multiple panel switchboards

Vacuum Circuit Breaker Type VCE2 or VCE6

The Extensible Vacumm Circuit Breaker, Extensible Vacuum Circuit Breaker, part of the SABRE range, combines the most advanced Vacuum and SF6 technologies. All switching and circuit interruptions are carried out by the vacuum bottles for optimum integrity and reliability.

Simple design, ergonomic layout with integral functional and cable test interlocks to prevent incorrect operation, has resulted in the optimum in operator safety.

All Circuit Breakers have also been designed with automation in mind, which allows the fitting of actuators for automation and remote control.

  • Vacuum switching: high mechanical and electrical endurance – tested in excess of 2,000 operations, with vacuum bottles capable of 10,000 full load operations up to and including 630A
  • Minimum maintenance
  • Ease of operation: clear indicator position and simple mimic diagram
  • Indoor and Outdoor

Single Switch Type SSE

In addition to the Extensible Circuit Breaker, Lucy Switchgear has introduced a Single Load Break Switch known as SSE, which can act as an Incomer / Isolator as well as a bus-section unit type DSN if required.

Metering Units AMU2/4/6 - TC/BC/FS

The SABRE range has full compatibility to air insulated metering units consisting of CT’s and VT’s. The BC option is designed for fitting in a run of busbars of extensible switchgear with alternative facility for cable connection IN and OUT (the FS option). The TC option is for Tee-off Metering and is directly coupled to the switch or circuit breaker.

Each unit comprises MV busbars with two current transformers and a single three phase voltage transformer complete with HV links and LV fuse protection. The ratio and class of transformers can be client specified.

Busbar Coupling

All units can be directly coupled to form multiple panel switchboards without the need for additional cabling or access to gas insulated chambers. This can be achieved using a well-proven busbar jointing system.

Single load break switch

Package Substations

In combination with our extensive range of distribution feeder pillars, Lucy Switchgear can offer you high quality indoor and outdoor package substations with fully integrated automation systems:

  • Extensible and non extensible SABRE up to 15.5kV
  • Indoor and outdoor transformers up to 2500kVA
  • Low Voltage feeder pillars up to 2400A

Protection

To meet all customers needs, all the equipment incorporates a range of protection, control and monitoring devices.

All options provide transformer Overcurrent protection covering phase to phase faults.

Earth fault protection covering phase to earth faults is also available as required.

  • TLF (time limit fuses): Simple direct acting system with a fixed time/current characteristic
  • Self Powered Relays: Direct acting system with adjustable time/current characteristics
  • Auxiliary Powered Relays: Separately supplied control system with adjustable time/current characteristics

Application Guide

TLF protection is generally utilised on smaller distribution transformers where the normal full load current is low and discrimination with the LV circuit can be achieved by fuse co-ordination.

Relay protection provides a range of time/current operational settings that can be adjusted to suit the transformer circuit. The protection is more precisely set and discrimination with the LV protection system is readily achievable.

Self-powered relays are particularly useful for outdoor substation equipment where no auxiliary power is available. A remote trip facility can be provided.

Auxiliary powered relays provide operational security as they function independently from the circuit they are monitoring. Remote trip and fault trip/alarm facilities can be provided.

Information associated with: Lucy Switchgear - MV Distribution Switchgear

 

Switchgear Product Selection

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Lucy Switchgear
Howland Road
Thame
Oxfordshire
OX9 3UJ

Tel: +44 (0) 1844 267 267
Fax: +44 (0) 1844 267 223

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