ABB RET630 - Functions, Codes and Symbols

27. Functions, codes and symbols
Table 88. Functions included in RET630
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
Directional earth fault, low stage DEFLPDEF
I
0
> →
67N-1
Directional earth fault, high stage DEFHPDEF
I
0
>> →
67N-2
Stabilised restricted earth fault LREFPNDF dI
0
Lo> 87NL
High-impedance–based restricted
earth fault
HREFPDIF dI
0
Hi> 87NH
Negative-sequence overcurrent NSPTOC I
2
> 46
Three-phase thermal overload for
transformers
T2PTTR 3Ith>T 49T
Three-phase overvoltage PHPTOV 3U> 59
Three-phase undervoltage PHPTUV 3U< 27
Positive-sequence overvoltage PSPTOV U
1
> 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
Transformer Protection and Control 1MRS756788 A
RET630
Product version: 1.0 Issued: 15.09.2009
62 ABB