No ECHO and CS should appear.
9. Switch off the polarizing voltage and reset the BLOCK and CRL binary
input.
If setting
WEI
=
Echo & Trip
M13936-52 v12
1. Inject the polarizing voltage 2U0 to about 90% of the setting (2U0>)
operating voltage.
2. Activate the CRL binary input.
No ECHO, CS and TRWEI outputs should appear.
3. Increase the injected voltage to about 110% of the setting (2U0) operating
voltage.
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.
No ECHO, CS and TRWEI outputs should appear.
9. Reset the CRL and BLOCK binary input.
10. Inject the polarizing voltage 2U0 to about 110% of the setting (2U0>) and
adjust the phase angle between the voltage and current to (180°- AnglRCA)
setting, the current leads the voltage.
11. Inject current in one phase to about 110% of the set operate current
(IN>Dir ).
12. Activate the CRL binary input.
No ECHO and TRWEI should appear.
13. Abruptly reverse the current to 65° lagging the voltage to operate the forward
directional element.
1MRK 506 377-UEN C Section 10
Testing functionality by secondary injection
Railway application RER670 2.2 IEC 161
Commissioning manual
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