• Tel. +38 (057) 768-07-92

  • Fax. +38 (057) 768-07-95

  • Ak. Proskury Str., 1 p.o. box 2831,

    Kharkiv, 61085, Ukraine


Undercar boxes:

External power supply box


The power supply system of passenger cars with an AC generator.




Provision of power supply system of a passenger car with electric power from an external three-phase network of 380 V, 50 Hz for long-term parking.



  • lowering of the input voltage three-phase network 380 V
  • remote disconnection YAVP from the external network 
  • optical alarm about the delivery of the external voltage mains supply to YAVP 
  • optical alarm, the issuance of a discrete signal and the output voltage removal of YAVP in emergency situations:

- open-phase fault of external mains supply 
- circuit discontinuity of the primary side of the main transformer YAVP;
- circuit discontinuity of the secondary side of the main transformer YAVP or circuits which connect YAVP with low-voltage box
- open access to power circuits of a low-voltage box;
- leakage resistance between the windings of the power transformer YAVP less than 5 kilohms


Technical characteristics

  • Three-phase mains supply voltage with frequency of 50 Hz, V: 380 ± 10%
  • Value range of outgoing three-phase voltage (line), V: 95 ... 115
  • Maximum safe load power, kVAr: 32
  • Value range of control voltage of direct current, V: 60...150


Overall dimensions, mm: 1135 x 570 x 590
Weight, kg: no more than 480
Enclosure protection level: IP65 according to GOST 14254-96


Operating conditions


Climatic version: U.1 (temperate climate) according to GOST 15150-69
Operating temperature range: -50 ° C... +40 ° C
Mechanical design: M25 according to GOST 17516.1-90E
Single-acting blows with acceleration to 5 g
The average service life is not less than 28 years




Kryukov Railway Car Building Works (Ukraine)
The railways of Ukraine