Completing The Test; Monitoring; Gas Medium Supervision Ssimg; Testing The Gas Medium Supervision For Pressure Alarm And Pressure Lockout Conditions - ABB RET670 Commissioning Manual

1MRK 504 165-UUS -
11.12.1.5
11.13
11.13.1
11.13.1.1
Transformer protection RET670 2.2 ANSI
Commissioning manual
9. Activate the trip signal lockout function, set TripLockout = Enabled and repeat.
All trip outputs (TR_A, TR_B, TR_C) and functional outputs TRIP and TR3P must
be active and stay active after each fault, CLLKOUT should be set.
10. Reset the lockout.
All functional outputs should reset.
11. Deactivate the trip signal lockout function, set TripLockout = Disabled and the
automatic lockout function, set AutoLock = Disabled.

Completing the test

Continue to test another function or end the test by changing the TESTMODE setting to
Disabled. Restore connections and settings to their original values, if they were changed
for testing purposes.

Monitoring

Gas medium supervision SSIMG

Prepare the IED for verification of settings as outlined in Section
this chapter.
Values of logical signals for SSIMG protection are available on the local HMI under Main
menu/Tests/Function status/Monitoring/InsulationGas(63)/SSIMG(63):x, where x =
1, 2,....21.
The Signal Monitoring in PCM600 shows the same signals that are available on the local
HMI.
Check that the input logical signal BLOCK is logical zero and that on the local HMI, the
logical signals PRESALM, PRESLO, TEMPALM, TEMPLO, ALARM and LOCKOUT are
logical zero.
Testing the gas medium supervision for pressure alarm and pressure
lockout conditions
1. Connect binary inputs to consider gas pressure and gas density to initiate the alarms.
2. Consider the analogue pressure input SENPRES and set SENPRES to a value lower
than PresAlmLimit or activate binary input signal SENPRESALM, check that outputs
PRESALM and ALARM are activated after a set time delay of tPressureAlarm.
3. Gas pressure lockout input SETPLO can be used to set PRESLO.
Testing functionality by secondary injection
Section 11
"Completing the test" in
273