ABB RET670 Product Manual page 63

ABB
Transformer protection RET670
Pre-configured
Product version: 1.1
Table 38. Breaker failure protection CCRBRF
Function
Operate phase current
Reset ratio, phase current
Operate residual current
Reset ratio, residual current
Phase current level for
blocking of contact function
Reset ratio
Timers
Operate time for current
detection
Reset time for current
detection
Table 39. Pole discordance protection CCRPLD
Function
Operate current
Time delay
Table 40. Directional underpower protection GUPPDUP
Function
Power level
Characteristic angle
Timers
Range or value
(5-200)% of lBase
> 95%
(2-200)% of lBase
> 95%
(5-200)% of lBase
> 95%
(0.000-60.000) s
10 ms typically
15 ms maximum
Range or value
(0–100)% of IBase
(0.000-60.000) s
Range or value
(0.0–500.0)% of Sbase
At low setting:
(0.5-2.0)% of Sbase
(2.0-10)% of Sbase
(-180.0–180.0) degrees
(0.00-6000.00) s
1MRK 504 091-BEN B
Issued: June 2010
Accuracy
± 1.0% of I at I £ I
r
± 1.0% of I at I > I
-
± 1.0% of I at I £ I
r
± 1.0% of I at I > I
-
± 1.0% of I at I £ I
r
± 1.0% of I at I > I
-
± 0.5% ± 10 ms
-
-
Accuracy
± 1.0% of I
r
± 0.5% ± 10 ms
Accuracy
± 1.0% of S at S < S
r r
± 1.0% of S at S > S
r
< ±50% of set value
< ± 20% of set value
2 degrees
± 0.5% ± 10 ms
r
r
r
r
r
r
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