The power supply unit the combined BPK-5(T)

BPK-5 - the multipurpose decision for power supply of the RZA device and the drive of the high-voltage switch on the substations with alternating operational current which are not equipped with sources of uninterruptible power supply.

BPK provides power supply of the RZA device and drive of the switch with the straightened current, both in normal, and in emergency operation of work of electric networks at all types of the short circuits accompanied with undervoltage.

BPK-5 has two galvanic started food entrances tension and two galvanic untied exits for power supply of the RZA device and the drive of the high-voltage switch.

BPK-5-T in addition has two current entrances, for power supply from the transformers of current providing maintenance of tension at the exits at the close short circuits (SC) and at inclusion on KZ.

For a charge of BPK-5 and BPK-5-T on completely deenergized substation two additional entrances of a charge from the "Krone" battery or a megaohmmeter (500-2500 V) are provided.

Distinctive features of BPK-5:

• safety of personnel;

• application of modern technologies;

• food from two independent sources of the variable, straightened tension in range from 60 to 270B, power supply from current transformers;

• long preservation of output tension at disappearance of all power supplies – ensuring reliable food of protection with excerpts of time;

• due to deduction of level of output tension stable work of chains of secondary switching remains. At KZ which are followed by considerable undervoltage functioning of AVR, UROV, LZSh, all discrete entrances of digital devices is ensured;

• fast readiness after giving of entrance food;

• intellectual management of load of current transformers;

• possibility of performance of the first inclusion from figurative sources of the electric power;

• easy implementation. Blok does not demand control;

• detailed recommendations about application. On demand schemes of secondary chains of relay protection on alternating current HUNDRED DIVG-052-2012 are provided.