2.22 Arc fault protection
(50ARC/50NARC)-optional
2 Protection functions Technical description
94
VAMP 24h support phone +358 (0)20 753 3264 VM50.EN004
Recorded values of the programmable stages PrgN (99)
Parameter Value Unit Description
yyyy-mm-dd Time stamp of the recording, date
hh:mm:ss.ms Time stamp, time of day
Flt pu Fault value
EDly %
Elapsed time of the operating time
setting. 100% = trip
SetGrp 1
2
Active setting group during fault
2.22. Arc fault protection (50ARC/50NARC)-
optional
The arc option card is inserted in the upper option card slot in
the back of the VAMP 50 protection relay. The card is fastened
to the relay with two screws.
The optional arc protection card includes two arc sensor
channels. The arc sensors are connected to the terminals 5-6
and 7-8.
The arc information can be transmitted and/or received
through digital input and output channels BIO. The output
signal is 48 V dc when active. The input signal has to be 18 …
48 V dc to be activated.
Connections:
1 Binary output +
2 Binary output GND
3 Binary input +
4 Binary input GND
5-6 Arc sensor 1 (VA 1 DA)
7-8 Arc sensor 2 (VA 1 DA)
The GND must be connected together between the GND of the
connected devices.
The binary output of the arc option card may be activated by
one or both of the connected arc sensors, or by the binary input.
The connection between the inputs and the output is selectable
via the output matrix of the device. The binary output can be
connected to an arc binary input of another VAMP protection
relay or arc protection system.
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