ABB RELION RET670, Руководство по эксплуатации продукта

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Table 51. General current and voltage protection (GAPC), continued
Function Range or value Accuracy
Voltage level where voltage
memory takes over (0.0 - 5.0)% of U
base
± 1.0% of U
r
Start overvoltage, step 1 and 2 (2.0 - 200.0)% of U
base
± 1.0% of U
r
for U<U
r
± 1.0% of U for U>U
r
Start undervoltage, step 1
and 2 (2.0 - 150.0)% of U
base
± 1.0% of U
r
for U<U
r
± 1.0% of U for U>U
r
Operate time, start
overvoltage 25 ms typically at 0 to 2 x U
set
-
Reset time, start overvoltage 25 ms typically at 2 to 0 x U
set
-
Operate time start
undervoltage 25 ms typically 2 to 0 x U
set
-
Reset time start undervoltage 25 ms typically at 0 to 2 x U
set
-
High and low voltage limit,
voltage dependent operation (1.0 - 200.0)% of U
base
± 1.0% of U
r
for U<U
r
± 1.0% of U for U>U
r
Directional function Settable: NonDir, forward and
reverse -
Relay characteristic angle (-180 to +180) degrees ± 2.0 degrees
Relay operate angle (1 to 90) degrees ± 2.0 degrees
Reset ratio, overcurrent > 95% -
Reset ratio, undercurrent < 105% -
Reset ratio, overvoltage > 95% -
Reset ratio, undervoltage < 105% -
Overcurrent:
Critical impulse time 10 ms typically at 0 to 2 x I
set
-
Impulse margin time 15 ms typically -
Undercurrent:
Critical impulse time 10 ms typically at 2 to 0 x I
set
-
Impulse margin time 15 ms typically -
Overvoltage:
Critical impulse time 10 ms typically at 0 to 2 x U
set
-
Impulse margin time 15 ms typically -
Transformer protection RET670 1MRK 504 091-BEN B
Pre-configured
Product version: 1.1
Issued: June 2010
ABB 69