Manual 7SJ46
Installation and commissioning
C53000-K1174-C002-4
60
Standard test
The "RUN/ERROR" LED must shine green in normal operation.
If the LED shines red, the self-monitoring function of the relay has
detected an error.
If the LED is blinking green, a setting has been made but not yet
applied. Press the "ENTER" key to activate the new settings.
If the LED is blinking red, there is an inconsistency of the Basic
Settings Block. Please correct the setting.
If none of the LEDs is lit, check the auxiliary power supply. The
live status contact of the device must open when the auxiliary
voltage is applied, and close when the auxiliary voltage is turned
off.
Tripping test
This test is used to check the overall function of the device,
including the trip circuits. Connect the device to a secondary test
equipment for protective devices. Observe the safety
instructions!
When testing the device with secondary test equipment, make
sure that no other measurement quantities are connected.
The trip test should be performed with the circuit breaker
connected, and with the setting values that are specified for
operation.
Make sure that the pickup indicator LEDs do not indicate a stored
pickup. If necessary, clear stored indications by pressing the
”LED-RESET” key.
Using the test equipment, apply a test current below the set
tripping threshold. The device must not trip. Apply now a test
current above the set tripping threshold. The trip actuator or the
circuit breaker must be actuated.
Earth stages are tested with single-phase current, the phase
pickup stages with three-phase current. The pickup indicator
DANGER!
The output terminals of the current transformers must be short-
circuited on the transformers themselves before the power
supply lines to the device are disconnected.
Where a test switch is available that short-circuits automatically the
output lines of the current transformer, it will be sufficient to set it to
"Test" position, provided that the short-circuiters have been checked
in the first place.
Caution!
This test trips the circuit breaker.
Tests with currents that exceed more than 4 times the rated device
current cause an overload of the input circuits and may only be
performed for a short time (see 2.11). Afterwards the device has to
cool off!
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