ABB Relion 650 Series Product Manual page 9

Transformer protection RET650
Version 1.1 ANSI
Back-up protection functions
IEC 61850/ ANSI
Function
block name
Current protection
PHPIOC 50
OC4PTOC 51/67
EFPIOC 50N
EF4PTOC 51N/67N
TRPTTR 49
CCRBRF 50BF
CCRPLD 52PD
GUPPDUP 37
GOPPDOP 32
DNSPTOC 46
Voltage protection
UV2PTUV 27
OV2PTOV 59
ROV2PTOV 59N
OEXPVPH 24
Frequency protection
SAPTUF 81
SAPTOF 81
SAPFRC 81
ABB Power Grids
Function description
Instantaneous phase overcurrent protection
Four step directional phase overcurrent protection
Instantaneous residual overcurrent protection
Four step directional residual overcurrent protection
Thermal overload protection, two time constants
Breaker failure protection
Pole discordance protection
Directional underpower protection
Directional overpower protection
Negative sequence based overcurrent function
Two step undervoltage protection
Two step overvoltage protection
Two step residual overvoltage protection
Overexcitation protection
Underfrequency function
Overfrequency function
Rate-of-change frequency protection
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1MRK 504 127-BUS B
GUID-47D5EAC9-5F4A-4A3D-B813-4E50A2BCCDC3 v2.1.1
Transformer
2 2
2 2
2 2
2 2
2 2
2 2
2 2
1 1
1 1
1 1
1 1
1 1
1 1
1 1
4 4
4 4
2 2
3
3 2
3
3 2
3 2
3
3
1 2
1 2
2
1 2
1 2
1 2
1
4 4
4 4
2 4
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