Test Stands
Laboratory is supplied from 220 kV system using 230/120 kV/kV, 160 MVA autotransformer.
Laboratory's basic testing equipment consists of three short-circuit transformers with parameters per unit:
- short-circuit power 580 MVA / 5 s;
- primary voltage 115,5 kV;
- secondary voltage 1 - 32 kV step 1 kV.
Laboratory also performs tests of HV equipment with 123 kV supply voltage and current up to 2800 A.
Short-circuit tests of surge arresters
according to IEC 60099-4
AC Power Arc Tests of Insulator Sets
according to IEC 61467
Internal Arc Tests of Prefabricated Substations
according to IEC 62271-202
Dynamic Ability to Withstand Short-Circuit Tests of Distribution Transformers
according to IEC 60076-5 (Oil transformers) and IEC 60076-11 (Dry transformers)
Mechanical operation tests of Switches, Disconnectors and Earthing Switches
according to IEC 62271-102 and IEC 62271-103
Short-time withstand current and peak withstand current testsof Disconnectors and Earthing Switches according to IEC 62271-102 and IEC 62271-1
Short-circuit current tests of Earthing Cables
according to IEC 61230