IEC 61850 or
function name
ANSI Function description Transformer
RET670 (Customized)
ZSMGAPC Mho impedance supervision logic 0-1
FMPSPDIS 21 Faulty phase identification with load enchroachment 0-2
ZMRPDIS,
ZMRAPDIS
21 Distance measuring zone, quad characteristic separate Ph-Ph
and Ph-E settings
0-5
FRPSPDIS 21 Phase selection, quadrilateral characteristic with settable angle 0-2
ZMFPDIS 21 High speed distance protection, quad and mho characteristic 0-2
ZMFCPDIS 21 High speed distance protection for series comp. lines, quad and
mho characteristic
0-2
PPLPHIZ Phase preference logic 0-1
PPL2PHIZ Phase preference logic 0-1
ZMRPSB 68 Power swing detection 0-1
PSLPSCH Power swing logic 0-1
PSPPPAM 78 Poleslip/out-of-step protection 0-1
OOSPPAM 78 Out-of-step protection 0-1
ZCVPSOF Automatic switch onto fault logic, voltage and current based 0-1
ZGVPDIS 21 Underimpedance protection for generators and transformers 0–2
2.3 Back-up protection functions
GUID-A8D0852F-807F-4442-8730-E44808E194F0 v13
IEC 61850 or
function name
ANSI Function description
RET670 (Customized)
Current protection
PHPIOC 50 Instantaneous phase overcurrent protection 0-8
OC4PTOC
51_67
1)
Directional phase overcurrent protection, four steps 0-8
EFPIOC 50N Instantaneous residual overcurrent protection 0-8
EF4PTOC 51N
67N
2)
Directional residual overcurrent protection, four steps 0-8
NS4PTOC 46I2 Four step directional negative phase sequence overcurrent
protection
0-8
SDEPSDE 67N Sensitive directional residual overcurrent and power protection 0-3
LCPTTR 26 Thermal overload protection, one time constant, Celsius 0-2
Table continues on next page
Section 2 1MRK 504 163-UUS A
Application
46 Transformer protection RET670 2.2 ANSI
Application manual
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