Maintenance and repairs

Effective switchgear testing, inspection and maintenance programmes are essential; even switchgear labelled “maintenance free” requires periodic testing and maintenance. This is especially important where electrical protection devices are concerned.

PS Electrical is an ISO9001 company and all service personnel have ECITB National Safety Group Passports. Our predictive and preventative maintenance programs include most of the NFPA and the NETA recommendations.

Our maintenance and repair clients include Tesco, Global Switch, Total Marine, BT and Vodafone. For over 17 years, we have been the lead switchgear servicing supplier to Cable & Wireless UK.

Regular inspection and maintenance reduces risk, costs and worry. For more information, please contact us today.

Circuit Breaker Service Packages.

PS Electrical Services can offer a fully comprehensive circuit breaker maintenance package either as a one-off (during black building tests / switchboard validations), or as part of a multi-year service plan. Should a fault be identified the breaker may be exchanged for a critical spare, repaired and returned to stock.

We can offer service packages for the following manufacturers;

  • Mitsubishi Air Circuit Breaker
  • (SACE) ABB Air Circuit Breaker
  • Merlin Gerin / Schneider Air Circuit Breaker – NW (NW Type), NSX (NSX Type), NS (NS Type), M (M Type), Masterpact
  • Terasaki Air Circuit Breaker, Tempower
  • Dorman Smith Air Circuit Breaker
  • GE Air Circuit Breaker, MPACT
  • GEC / GEA Air Circuit Breaker
  • Ottermill Air Circuit Breaker
  • Holec Air Circuit Breaker
  • MEM Air Circuit Breaker
  • Cutler Hammer Air Circuit Breaker
  • Moeller Air Circuit Breaker
  • Sentinal Air Circuit Breakerr
  • Siemens Air Circuit Breaker
  • Common circuit breaker faults;

  • will not open (turn off)
  • will not close (turn on)
  • will not charge / reset
  • will not trip off as set or required / faulty trip
  • will not stay closed when turned on
  • erratic / nuisance tripping
  • A typical circuit breaker maintenance visit will consist of the following elements;

  • Clean and lubricate mechanisms
  • Apply contact grease on stubs and main contacts
  • Check and set contact gaps as required
  • Check manual, opening, closing & tripping operation
  • Check auxiliary wiring
  • Check continuity of shunts, closing coils
  • Perform micro-ohm test over main contacts (Ductor)
  • Insulation resistance test
  • Test protection CTs (Secondary Injection Testing) and Primary injection where applicable
  • contact our Kidderminster office now to discuss your circuit breaker maintenance requirements!

    Click here to download the health and safety executive guidence on Switchgear maitenance