ABB RET670 Product Manual page 62

Transformer protection RET670 ANSI
Pre-configured
Product version: 1.2
Multipurpose protection
Table 41. General current and voltage protection CVGAPC
Function
Measuring current input
Base current
Measuring voltage input
Base voltage
Pickup overcurrent, step 1 and 2
Pickup undercurrent, step 1 and 2
Definite time delay
Operate time pickup overcurrent
Reset time pickup overcurrent
Operate time pickup undercurrent
Reset time pickup undercurrent
See table 78 and table 79
Voltage level where voltage memory takes
over
Pickup overvoltage, step 1 and 2
Pickup undervoltage, step 1 and 2
62
Range or value
Phase A, Phase B, Phase C, PosSeq,
NegSeq, 3*ZeroSeq, MaxPh, MinPh,
UnbalancePh, Phase A-Phase B, Phase
B-Phase C, Phase C-Phase A, MaxPh-
Ph, MinPh-Ph, UnbalancePh-Ph
(1 - 99999) A
Phase A, Phase B, Phase C, PosSeq, -
NegSeq, -3*ZeroSeq, MaxPh, MinPh,
UnbalancePh, Phase A-Phase B, Phase
B-Phase C, Phase C-Phase A, MaxPh-
Ph, MinPh-Ph, UnbalancePh-Ph
(0.05 - 2000.00) kV
(2 - 5000)% of IBase
(2 - 150)% of IBase
(0.00 - 6000.00) s
25 ms typically at 0 to 2 x I
set
25 ms typically at 2 to 0 x I
set
25 ms typically at 2 to 0 x I
set
25 ms typically at 0 to 2 x I
set
Parameter ranges for customer defined
characteristic no 17:
TD: 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
(0.0 - 5.0)% of VBase
(2.0 - 200.0)% of VBase
(2.0 - 150.0)% of VBase
1MRK 504 118-BUS A
Accuracy
-
-
-
-
± 1.0% of I for I<I
n n
± 1.0% of I for I>I
n
± 1.0% of I for I<I
n n
± 1.0% of I for I>I
n
± 0.5% ± 10 ms
-
-
-
-
See table 78 and table 79
± 0.5% of V
n
± 0.5% of V for V<V
n n
± 0.5% of V for V>V
n
± 0.5% of V for V<V
n n
± 0.5% of V for V>V
n
ABB