ABB Relion 650 series RET650 Product Manual page 9

ABB
Transformer protection RET650
Product version: 1.1
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
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
1MRK 504 127-BEN -
Issued: February 2011
Transformer
2 3
2 3 2
2 3
2 3 2
2 3 2
2 3
2 3
1 1 2
1 1 2
1 2
1 1 2
1 1 2
1 1 2
1
9