Function Range or value Accuracy
Reset time at 10 to 0 x I
set
Min. = 20 ms
Max. = 35 ms
-
Undercurrent:
Pickup time at 2 to 0 x I
set
Min. = 15 ms
Max. = 30 ms
-
Reset time at 0 to 2 x I
set
Min. = 15 ms
Max. = 30 ms
-
Overcurrent:
Inverse time characteristics, see table
1076, 1077 and table 1078
16 curve types See table 1076, 1077 and table
1078
Overcurrent:
Minimum operate time for inverse
curves, step 1 - 2
(0.00 - 6000.00) s ±0.2% or ±35 ms whichever is
greater
Voltage level where voltage memory
takes over
(0.0 - 5.0)% of VBase ±0.5% of V
n
Pickup overvoltage, step 1 - 2 (2.0 - 200.0)% of VBase ±0.5% of V
n
at V ≤ V
n
±0.5% of V at V > V
n
Pickup undervoltage, step 1 - 2 (2.0 - 150.0)% of VBase ±0.5% of V
n
at V ≤ V
n
±0.5% of V at V > V
n
Independent time delay, overvoltage at
0.8 to 1.2 x V
set
, step 1 - 2
(0.00 - 6000.00) s ±0.2% or ±35 ms whichever is
greater
Independent time delay, undervoltage
at 1.2 to 0.8 x V
set
, step 1 - 2
(0.00 - 6000.00) s ±0.2% or ±35 ms whichever is
greater
Overvoltage:
Pickup time at 0.8 to 1.2 x V
set
Min. = 15 ms
Max. = 30 ms
-
Reset time at 1.2 to 0.8 x V
set
Min. = 15 ms
Max. = 30 ms
-
Undervoltage:
Pickup time at 1.2 to 0.8 x V
set
Min. = 15 ms
Max. = 30 ms
-
Reset time at 1.2 to 0.8 x V
set
Min. = 15 ms
Max. = 30 ms
-
Overvoltage:
Inverse time characteristics, see table
1084
4 curve types See table 1084
Undervoltage:
Inverse time characteristics, see table
1085
3 curve types See table 1085
High and low voltage limit, voltage
dependent operation, step 1 - 2
(1.0 - 200.0)% of VBase ±1.0% of V
n
at V ≤ V
n
±1.0% of V at V > V
n
Directional function Settable: NonDir, forward and reverse -
Relay characteristic angle (-180 to +180) degrees ±2.0 degrees
Relay trip angle (1 to 90) degrees ±2.0 degrees
Reset ratio, overcurrent > 95% -
Table continues on next page
1MRK 502 066-UUS B Section 11
Multipurpose protection
713
Technical manual
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