28. Functions, codes and symbols
Table 105. Functions included in REF630
Functionality IEC 61850 IEC 60617 ANSI
Protection
Three-phase non-directional overcurrent,
low stage
PHLPTOC 3I> 51P-1
Three-phase non-directional overcurrent,
high stage
PHHPTOC 3I>> 51P-2
Three-phase non-directional overcurrent,
instantaneous stage
PHIPTOC 3I>>> 50P/51P
Three-phase directional overcurrent, low
stage
DPHLPDOC
3I> →
67-1
Three-phase directional overcurrent, high
stage
DPHHPDOC
3I>> →
67-2
Non-directional earth fault, low stage EFLPTOC I
0
> 51N-1
Non-directional earth fault, high stage EFHPTOC I
0
>> 51N-2
Non-directional earth fault, instantaneous
stage
EFIPTOC I
0
>>> 50N/51N
Directional earth fault, low stage DEFLPDEF
I
0
> →
67N-1
Directional earth fault, high stage DEFHPDEF
I
0
>> →
67N-2
Transient/intermittent earth fault INTRPTEF
I
0
> → IEF
67NIEF
Negative-sequence overcurrent NSPTOC I
2
> 46
Three-phase thermal overload for feeder T1PTTR 3Ith>F 49F
Three-phase overvoltage PHPTOV 3U> 59
Three-phase undervoltage PHPTUV 3U< 27
Positive-sequence overvoltage PSPTOV U1> 47O+
Positive-sequence undervoltage PSPTUV U
1
< 47U+
Negative-sequence overvoltage NSPTOV U
2
> 47O-
Residual overvoltage ROVPTOV U
0
> 59G
Frequency gradient DAPFRC df/dt> 81R
Overfrequency DAPTOF f> 81O
Underfrequency DAPTUF f< 81U
Load shedding LSHDPFRQ UFLS/R 81LSH
Feeder Protection and Control 1MRS756380 A
REF630
Product version: 1.0 Issued: 15.09.2009
74 ABB