Vvodno safety device VZU
VZU (the device input and protective) set in SDPS 2h120 cabinet on a centralization post. On the basis of this VZU equipped with devices of protection against pulse overvoltage of UZIP the reliable cascade of lighting protection of microphone and dynamic lines successfully is implemented.
The device input and protective represents a complex of security features of the equipment of all types of technological and operational and technological communication and is intended for use on junction and intermediate offices of the railroad complete with SDPS 2h120.
The input safety device VZU provides:
Possibility of carrying out electric tests and measurements, chains towards the line and towards station;
Convenience of shutdown of lines, by solderless switching of the chain included in VZU;
Electric protection of service personnel of exchange equipment and communication lines against the hazardous voltages and currents arising on the communication line.