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
Содержание RET630
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