Urban electric transport traction substation No.4 (Zolotoy Ostrov) on Bolotnaya embankment was put into operation to replace the existing one. The following new equipment of NPP ENERGIA is used on the substation:
- TSZPU-2000 transformers;
- V-TPED-2,0k-600N M2 rectifiers;
- ShSNm panel fitted with LCD display for control of the traction substation units;
- RU-600 switchgear (+600V) of roll-out type with UR26, UR40 circuit breakers;
- RUOShm-600 switchgear (–600V);
- ShZK cabling protection panel;
- BKT-02 unit for monitoring temperatures in substation compartments.