Output signals
Close command output
Open command output
Operation time
Breaker traverse time setting
0.02…500.00 s, setting step 0.02 s
Max close/open command pulse length
0.02…500.00 s, setting step 0.02 s
Control termination time out setting
0.02…500.00 s, setting step 0.02 s
Inaccuracy
De nite Time operating time
±0.5 % or ±10 ms
Breaker control operation time
External object control time
<75ms
Object control during Autoreclosing
See Autoreclosing technical sheet
9.2.2.4. Synchrocheck (25)
Table. 9.2.2.4. - 285. Synchrocheck (25) technical data
Input signals
Input magnitudes
P-P voltage fundamental frequency RMS
P-E voltage fundamental frequency RMS
Pick-up
U diff < setting
2.00…50.00 %Un, setting step 0.01 %Un
Angle diff < setting
3.0…90.0 deg, setting step 0.10 deg
Freq diff < setting
0.05…0.50 Hz, setting step 0.01 Hz
Inaccuracy
-Voltage
-Frequency
-Angle
±3.0 %U
SET
or ±0.3 %U
N
±25 mHz (U > 30 V secondary)
±1.5 °(U > 30 V secondary)
Reset
Reset ratio
-Voltage
-Frequency
-Angle
99 % of pick-up voltage setting
20 mHz
±2.0 °
Activation time
Activation (to LD/DL/DD)
Activation (to Live Live)
<35 ms
<60 ms
Reset
<40 ms
Bypass modes
Voltage check mode (excluding LL)
LL+LD, LL+DL, LL+DD, LL+LD+DL, LL+LD+DD, LL+DL+DD, bypass
U live > limit
U dead < limit
0.10…100.00 %Un, setting step 0.01 %Un
0.00…100.00 %Un, setting step 0.01 %Un
Note!
Voltage is scaled to primary amplitude. Therefore different sized PT secondary are possible.
Minimum voltage for direction and frequency solving is 20.0 %Un.
U dead limit is not in use when set to 0 %Un.
When SYN3 is used, SYN1 and SYN2 must have same reference voltage.
In 3LN mode synchronization to L-N and L-L voltage both is possible. In 3LL/2LL modes
synchronization only to L-L voltage is supported solution.
AQ-T257
Instruction manual
Version: 2.00
© Arcteq Relays Ltd
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