Art-Nr.: 0058463
Differenzstromwächter IP 5883
Control relay, differential current monitor, for monitoring differential currents occurring in the network, with adjustable time delay, selectable closed-circuit or open-circuit principle, outputs 1 changeover contact for pre-warning, 1 changeover contact for alarm.
Features:
- according to IEC/EN 62 020, VDE 0663
- for detection of insulation faults in grounded networks
- all-current sensitive type B according to IEC 60755 A2
- 4 measuring ranges from 10 mA to 3 A
- fault indication and pre-warning with memory
- with adjustable switching delay
- selectable closed-circuit or open-circuit principle
- LED indication for operation, pre-warning and alarm
- with test function
- LED bar graph indication for fault current
- analog output
- wire break detection
- 70 mm width
Application
The function is comparable to an RCD. It monitors the network for a fault current but, unlike the RCD, does not disconnect the network when a fault is detected, but only indicates it. The (differential) current measurement is performed via an external current transformer. All conductors of the outgoing circuit to be protected (without PE) are passed through the transformer. In a fault-free network, the sum of all currents is zero, so that no voltage is induced in the transformer. If a fault current flows to ground due to an insulation fault, the current difference in the transformer causes a current that is detected and evaluated by the IP 5883. In the event of a wire break in and to the transformer, the device switches to the alarm state and both red LEDs flash.
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