1. Select the programmable LED to indicate detection of light from the arc
detection by setting switch 21 to 1 in the SGL for the chosen LED. It is also
possible to route the detected light signal to an output relay, that should be set to
be latched.
2. Configure the chosen programmable LED to be latched by setting the
corresponding switch in SGF5 to 1
3. Position the camera flash at a minimum of 3 meters distance from the lens sensor
and flash the light. Alternatively position the flashlight against the lens sensor
and light it.
4. The selected programmable LED should become lit if the arc detection is
operating properly. If an output relay is used, then the output contacts should be
activated.
Ensure that the switch in SGF3 for light signal output L> is set, and
that the light signal output L> is configured to be activated
immediately upon detection of light, with a switch in SGF4.
5.7. Testing protection functions
The short-circuit and ground-fault protection functions in the relay can be tested
with the setting values used during normal operation. If other settings are used
during testing, make sure that the original settings are re-entered after the test is
completed.
The test is performed as a secondary test, by injecting current to the current
energizing inputs. To enable secondary testing without accidentally blocking other
relays or tripping circuit breakers in the system, the relay has to be disconnected.
For the limited current carrying capacity of the wiring, terminals and
measuring transformers of the relay, refer to the Technical Reference
Manual.
5.7.1. Testing of the short-circuit protection
If proper 3-phase secondary testing equipment is not available for current
generation, the phase unbalance protection function has to be out of operation
during the test.
56
REF 610REF 610
Feeder Protection Relay
Operator's Manual - ANSI Version
1MRS755539
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