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Section 3
Available functions
3.1
Main protection functions
Table 2:
Example of quantities
2
= number of basic instances
0-3
= option quantities
3-A03
= optional function included in packages A03 (refer to ordering details)
IEC 61850
ANSI
Function description
Transformer
RET650 (A05)
Differential protection
T3WPDIF
87T
Transformer differential protection, three winding
1
REFPDIF
87N
Restricted earth fault protection, low impedance
2
3.2
Back-up protection functions
IEC 61850
ANSI
Function description
Transformer
RET650 (A05)
Current protection
PHPIOC
50
Instantaneous phase overcurrent protection
1
OC4PTOC
51_67
1)
Four step phase overcurrent protection
3
EFPIOC
50N
Instantaneous residual overcurrent protection
1
EF4PTOC
51N
67N
2)
Four step residual overcurrent protection
2
TRPTTR
49
Thermal overload protection, two time constant
1
CCRBRF
50BF
Breaker failure protection
3
Multipurpose protection
CVGAPC
General current and voltage protection
3
1) 67 requires voltage
2) 67N requires voltage
1MRK 504 160-UEN -
Section 3
Available functions
Transformer protection RET650 2.1 IEC
19
Commissioning manual
Содержание RET650 2.1 IEC
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