The arc sensor can alternatively be mounted completely in the
protected area with the help of a mounting plate VYX 01 (Z-
shaped) or VYX 02 (L-shaped). (See Figure 8.5-1).
Active part of the sensor Anchoring Fastening screw 4x15
Sensor cable
Figure 3.1-3. Arc sensor mounting picture.
3.2. Portable arc sensor VA 1 DP
A portable arc sensor (VA1DP) can temporarily be connected to
the VAMP121(D) unit, via a plug-in connector (sensor).
It is used to further enhance the safety during maintenance on an
operational power distribution system.
The sensor should be located close to the place where the
maintenance is done. It can, for instance, be attached to the
breast pocket of the service man’s shirt or suit.
The function of the portable arc sensor equals that of the fix-
mounted arc sensors (VA1 DA).
Figure 3.2-1. Portable arc sensor VA 1 DP
NOTE! To avoid false activations, the portable sensor must be
disconnected from the unit immediately after use.
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