BZK units are designed for currents regulation between underground communications at electrochemical protection harmful effect elimination and cooperative protection against corrosion of contiguous underground communications, for stray current drainage also.
BZK can be placed on the open air (U1 execution).
BZK unit involves four (three, two, one) identical diode-rheostat communication protection units. Unit’s (one channel) main features are given in Table1.
Parameters name
Norm
Rated current, A
Rheostat resistance, min, Ohm
Rheostat steps quantity
Rheostat resistance change diapason, Ohm
Allowed inverse voltage, V
