1.4.3 Functions, codes and symbols
Table 1: Functions included in 630 series IEDs
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
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
Phase reversal PREVPTOC I
2
>> 46R
Three-phase thermal overload for feeder T1PTTR 3Ith>F 49F
Three-phase thermal overload for
transformers
T2PTTR 3Ith>T 49T
Three-phase thermal overload for motors MPTTR 3Ith>M 49M
Loss-of-load supervision LOFLPTUC 3I< 37
Motor stall protection JAMPTOC Ist> 51LR
Emergency start ESMGAPC ESTART ESTART
Motor start-up supervision STTPMSU Is2t n< 49,66,48,51LR
Negative phase-sequence time
overcurrent protection
MNSPTOC I
2
>M 46M
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
Table continues on next page
1MRS756791 A Section 1
Introduction
630 series 7
Point List Manual
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