Commissioning Services

What ISS can do

ISS provide commissioning services nationwide, providing anything from protection relay testing, pre-commissioning installed equipment, full system commissioning, fault finding, interrogating, modifying and implementing of protection settings. Retrofit and Commissioning upgraded Electrical Protection Systems.

Commissioning activities provided as follows;


  • Primary injection testing

  • Secondary injection testing

  • HV pressure testing AC & DC

  • CT testing

  • HV and LV Power Systems Protection Commissioning using the latest intelligent commissioning equipment including Omicron protection equipment and CT analysers

  • Factory acceptance testing

  • Site acceptance testing

  • Final commissioning and system handover


ISS provide HV & LV switching services nationwide on private networks, providing;


  • Providing Senior Authorised Persons up to 33kV on private networks

  • London Underground HV1 up to 22kV

  • London Underground LV1 up to 1kV




24/7/365 Emergency Call Out Service

0161 344 1117