Distribution Equipment Laboratory performs:
- short-time withstand current and peak withstand current tests of switchgear and switching devices up to 550 kV:
- in three-phase circuit up to 31,5 kA/3s,
- in single-phase circuit up to 63 kA/2s, - making and breaking tests of circuit-breakers, switches and switch-fuse combinations up to 36 kV,
- making and breaking tests of disconnectors and earthing switches up to 550 kV,
- breaking tests of current-limiting fuses and expulsion fuses up to 24 kV,
- internal arc tests of MV switchgears and HV/LV prefabricated substations,
- dynamic ability to withstand short-circuit tests of distribution transformers up to 36 kV and special up to 120 kV,
- short-circuit tests of surge arresters up to 110 kV,
- AC power arc tests of insulators sets up to 420 kV,
- short-time current tests of current and combined transformers up to 145 kV,
- short-circuit withstand capability of voltage and combined transformers up to 145 kV,
- mechanical operation tests of switches, switch-fuse combinations, disconnectors and earthing switches,
- mechanical tests of current, voltage and combined transformers,
- mechanical shock tests on fuses,
- short-time current tests of rectifier groups (transformer + rectifier),
- cable spike tests,
- time-current characteristics of current-limiting fuses up to 24 kV.