Current relay РТ400

Purpose:

Voltage relays monitor DC and AC circuits and issue signals to protection or control equipment.

The measured RMS voltage is shown on a three- or four-digit display.
Works over a wide range of measured voltages. Two output relays with changeover contacts allow control signals to be issued at different measured voltages and with different delays.
Separately programmable trip thresholds, reset hysteresis and operate and reset delays on two independent channels give both undervoltage and overvoltage relay functions in a single unit.
Different tripping curves can be selected for the current relay.
Password protection against unauthorised reprogramming.
Powered from a DC or AC supply.
Galvanic isolation between the measuring input, the supply input and the output contacts.
Voltage measurement over a wide frequency range — from DC to 400 Hz — including the RMS value of an arbitrary waveform within that range.
Data exchange and control over RS485 using the Modbus protocol.