29. Functions, codes and symbols
Table 103. 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
I0>
51N-1
Non-directional earth-fault, high
stage
EFHPTOC
I0>>
51N-2
Directional earth-fault, low stage
DEFLPDEF
I0> ->
67N-1
Directional earth-fault, high stage
DEFHPDEF
I0>>
→
67N-2
Stabilised restricted earth-fault
LREFPNDF
dI0Lo>
87NL
High-impedance-based restricted
earth-fault protection
HREFPDIF
dI0Hi>
87NH
Negative-sequence overcurrent
NSPTOC
I2>
46
Three-phase thermal overload for
transformers
T2PTTR
3Ith>T
49T
Three-phase current inrush
detection
INRPHAR
3I2f>
68
Transformer differential protection
for two-winding transformers
TR2PTDF
3dI>T
87T
Three-phase overvoltage (LV side)
PHPTOV
3U>
59
Three-phase undervoltage (LV side)
PHPTUV
3U<
27
Positive-sequence overvoltage
PSPTOV
U1>
47O+
Positive-sequence undervoltage
PSPTUV
U1<
47U+
Negative-sequence overvoltage
NSPTOV
U2>
47O-
Transformer Protection and Control
1MRS756978 D
RET630
Product version: 1.1
Issued: 2011-05-18
ABB
75
Содержание Relion 630 Series RET630
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