Seg MRM3, Руководство пользователя

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26 TB MRM3 07.01 E
6 Notes on Relay Tests and
Commissioning
6.1 Connection of the auxiliary voltage
To prevent destruction of the relay during tests the follow-
ing has to be observed:
• The aux. voltage supply of the relay must be within the
permissible ranges.
• The test current must not exceed the thermal rating of
the measuring circuits.
•
The CTs must be connected properly.
• All control and measuring circuits as well as the output
relays must be connected properly.
• The voltage ranges of the digital inputs must be ad-
justed correctly.
For further information please see Technical Data
6.2 Testing of Output Relays and LEDs
Checking of the output relays and of all LEDs can be
triggered by the <TRIP>-push-button.
Test procedure
Entry Display Note
<TRIP> DO1 Display of the relay software
version (part 1)*
<TRIP> 1.00 Display of the relay software
version (part 2)*
<TRIP> PSW ? Call for enter the password
PSW? ****
TRI ? Password entry
Ready for tests
<TRIP> TRIP Start the test
Release of self-test relay
Pick-up of all output relays
Test of all LEDs
<Select/
Reset> |SEG Finish the test,
Output relays return to their cur-
rent operational state
* If possible please state when writing to us.
Careful when the relay is installed:
The relay test is not a pure internal test. All the output re-
lays will be energized! The self-supervision relay
re-
leases first. Hereby a relay fault could be adopted by a
connected control gear.
Thereafter all other existing output relays will pick up
one after another. The reaction in the relevant switch-
board could be accordingly (e.g. trip of a priority CB).