IEC 61850 or
function name
ANSI Function description Transformer
RET670 (Customized)
ZMMPDIS,
ZMMAPDIS
21 Full-scheme distance protection, quadrilateral for ground faults 0-5
ZDMRDIR 21D Directional impedance element for mho characteristic 0-2
ZDARDIR Additional distance protection directional function for ground faults 0-1
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
3.2 Back-up protection functions
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
Table continues on next page
Section 3 1MRK 504 165-UUS -
Available functions
34 Transformer protection RET670 2.2 ANSI
Commissioning manual
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