Multipurpose protection
Table 51. General current and voltage protection (GAPC)
Function
Range or value
Accuracy
Measuring current input
phase1, phase2, phase3,
PosSeq, NegSeq, 3*ZeroSeq,
MaxPh, MinPh, UnbalancePh,
phase1-phase2, phase2-phase3,
phase3-phase1, MaxPh-Ph,
MinPh-Ph, UnbalancePh-Ph
-
Base current
(1 - 99999) A
-
Measuring voltage input
phase1, phase2, phase3,
PosSeq, -NegSeq, -3*ZeroSeq,
MaxPh, MinPh, UnbalancePh,
phase1-phase2, phase2-phase3,
phase3-phase1, MaxPh-Ph,
MinPh-Ph, UnbalancePh-Ph
-
Base voltage
(0.05 - 2000.00) kV
-
Start overcurrent, step 1 and 2 (2 - 5000)% of I
base
± 1.0% of I
r
for I<I
r
± 1.0% of I for I>I
r
Start undercurrent, step 1
and 2
(2 - 150)% of I
base
± 1.0% of I
r
for I<I
r
± 1.0% of I for I>I
r
Definite time delay
(0.00 - 6000.00) s
± 0.5% ± 10 ms
Operate time start
overcurrent
25 ms typically at 0 to 2 x I
set
-
Reset time start overcurrent
25 ms typically at 2 to 0 x I
set
-
Operate time start
undercurrent
25 ms typically at 2 to 0 x I
set
-
Reset time start undercurrent
25 ms typically at 0 to 2 x I
set
-
See table
Parameter ranges for customer
defined characteristic no 17:
k: 0.05 - 999.00
A: 0.0000 - 999.0000
B: 0.0000 - 99.0000
C: 0.0000 - 1.0000
P: 0.0001 - 10.0000
PR: 0.005 - 3.000
TR: 0.005 - 600.000
CR: 0.1 - 10.0
Transformer protection RET670
1MRK 504 091-BEN B
Pre-configured
Product version: 1.1
Issued: June 2010
68
ABB
Содержание RELION RET670
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