ABB Relion 670 Series Commissioning Manual page 241

1MRK 504 165-UEN E
4. Abruptly reverse the current to the setting of
operate the forward directional element.
5. Switch off the current and check that the ECHO and CS appear on the corresponding
binary output during 200ms after resetting the directional element.
6. Switch off the CRL binary input.
7. Activate the BLOCK binary input.
8. Activate the CRL binary input.
9. Switch off the polarizing voltage and reset the BLOCK and CRL binary input.
If setting
1. Inject the polarizing voltage 3U0 to about 90% of the setting (
2. Activate the CRL binary input.
3. Increase the injected voltage to about 110% of the setting (
4. Activate the CRL binary input.
5. Check that the ECHO, CS and TRWEI appear on the corresponding binary output or on the
local HMI.
6. Reset the CRL binary input.
7. Activate the BLOCK binary input.
8. Activate the CRL binary input.
9. Reset the CRL and BLOCK binary input.
10. Inject the polarizing voltage 3U0 to about 110% of the setting (
phase angle between the voltage and current to (180°-
leads the voltage.
11. Inject current in one phase to about 110% of the set operate current (
12. Activate the CRL binary input.
13. Abruptly reverse the current to 65° lagging the voltage to operate the forward directional
element.
Transformer protection RET670
Commissioning manual
No ECHO and CS should appear.
No ECHO and CS should appear.
No ECHO and CS should appear.
WEI = Echo & Trip
No ECHO, CS and TRWEI outputs should appear.
No ECHO, CS and TRWEI outputs should appear.
No ECHO and TRWEI should appear.
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Testing functionality by secondary injection
AngleRCA setup lagging the voltage, to
3U0> ) operating voltage.
3U0 ) operating voltage.
3U0> ) and adjust the
AnglRCA ) setting, the current
Section 11
M13936-52 v12
IN>Dir ).
235