ABB ret650 Commissioning Manual page 11

Transformer protection
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Commissioning Manual
Completing the test................................................................49
Breaker failure protection CCRBRF............................................49
Checking the re-trip and back-up times..................................51
Verifying the re-trip mode.......................................................51
Verifying the back-up trip mode..............................................52
Completing the test................................................................54
Pole discordance protection CCRPLD........................................54
Verifying the settings..............................................................54
Completing the test................................................................55
Directional underpower protection GUPPDUP ...........................55
Verifying the settings..............................................................55
Completing the test................................................................57
Directional overpower protection GOPPDOP .............................57
Verifying the settings..............................................................57
Completing the test................................................................58
Testing voltage protection functions.................................................58
Two step undervoltage protection UV2PTUV .............................58
Verifying the setting................................................................58
Completing the test................................................................59
Two step overvoltage protection OV2PTOV ...............................59
Verifying the settings..............................................................59
Completing the test................................................................60
Verifying the settings..............................................................60
Completing the test................................................................60
Overexcitation protection OEXPVPH .........................................60
Verifying the settings..............................................................61
Completing the test................................................................61
Testing frequency protection functions.............................................61
Underfrequency protection SAPTUF ..........................................61
Verifying the settings..............................................................62
Completing the test................................................................62
Overfrequency protection SAPTOF ............................................63
Verifying the settings..............................................................63
Completing the test................................................................64
Rate-of-change frequency protection SAPFRC ..........................64
Verifying the settings..............................................................64
Completing the test................................................................65
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RetripMode = Contact ...............................53
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