Section 2 Available Functions; Main Protection Functions; Back-Up Protection Functions - ABB RET650 Technical Manual

1MRK 504 135-UEN A
Section 2
2.1
IEC 61850 or ANSI
Function name
Differential protection
T2WPDIF 87T
T3WPDIF 87T
REFPDIF 87N
HZPDIF 87
Impedance protection
ZMRPSB 68
ZGCPDIS 21G
LEPDIS
2.2
IEC 61850 or ANSI
Function name
Current protection
PHPIOC 50
OC4PTOC 51/67
EFPIOC 50N
EF4PTOC 51N/67N
TRPTTR 49
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Technical manual
Available functions

Main protection functions

Function description
Transformer differential protection, two winding
Transformer differential protection, three winding
Restricted earth fault protection, low impedance
1Ph High impedance differential protection
Power swing detection
Underimpedance protection for generators and
transformers
Load encroachment

Back-up protection functions

Function description
Instantaneous phase overcurrent protection, 3–
phase output
Four step phase overcurrent protection, 3-phase
output
Instantaneous residual overcurrent protection
Four step residual overcurrent protection, zero/
negative sequence direction
Thermal overload protection, two time constants
Available functions
Transformer
0–1 1
0–1
0–3 2
0–2 2
0–1
0–1
0–1
Transformer
0–3 2 3
0–3 2 3
0–3 2 3
0–3 2 3
0–3 2 3
Section 2
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