Alstom MiCOM P546 - Page 39

Technical Data P54x/EN TD/La4
MiCOM P543, P544, P545 & P546
(TD) 2-9
TD
Voltage transformer supervision
Accuracy
Fast block operation: <1 cycle
Fast block reset: <1.5 cycles
Time delay:
20 ms or 2%, whichever is greater
Current transformer supervision
Standard CTS
Accuracy
IN> Pick-up: Setting 5%
VN< Pick-up: Setting 5%
IN> Drop-off: 0.9 setting 5%
VN< Drop-off:
(1.05 x setting) 5% or 1 V, whichever is
greater
Time delay operation:
Setting 2% or 20 ms, whichever is greater
CTS block operation: <1 cycle
CTS reset: <35 ms
Differential CTS
Accuracy
I1 Pick-up: Setting 5%
I1 Drop-off: (0.9 x setting) 5%
I2/I1> Pick-up: Setting 5%
I2/I1> Drop-off: (0.9 x setting) 5%
I2/I1>> Pick-up: Setting 5%
I2/I1>> Drop-off: (0.9 x setting) 5%
Time delay operation:
Setting 2% or 20 ms, whichever is greater
CTS block operation: <1 cycle
CTS block diff operation <1 cycle
CTS reset: <35 ms
CB state monitoring and condition
monitoring
Accuracy
Timers:
20 ms or 2%, whichever is greater
Broken current accuracy: 5%
Programmable scheme logic
Accuracy
Output conditioner timer:
Setting 20 ms or 2%, whichever is greater
Dwell conditioner timer:
Setting 20 ms or 2%, whichever is greater
Pulse conditioner timer:
Setting 20 ms or 2%, whichever is greater
Auto-reclose and check
synchronism
Accuracy
Timers:
Setting 20 ms or 2%, whichever is greater
Measurements and recording
facilities
Accuracy
Typically 1%, but 0.5% between 0.2 - 2In/Vn
Current: 0.05 to 3 In
Accuracy: 1.0% of reading
Voltage: 0.05 to 2 Vn
Accuracy: 1.0% of reading
Power (W): 0.2 to 2 Vn and 0.05 to 3 In
Accuracy: 5.0% of reading at unity power
factor
Reactive power (Vars): 0.2 to 2 Vn to 3 In
Accuracy: 5.0% of reading at zero power
factor
Apparent power (VA): 0.2 to 2Vn 0.05 to 3 In
Accuracy: 5.0% of reading
Energy (Wh): 0.2 to 2Vn 0.2 to 3 In
Accuracy: 5.0% of reading at zero power
factor
Energy (Varh): 0.2 to 2Vn 0.2 to 3In
Accuracy: 5.0% of reading at zero power
factor
Phase accuracy: 0° to 360°
Accuracy: 0.5%
Frequency: 45 to 65 Hz
Accuracy: 0.025 Hz
IRIG-B and real time clock
Performance accuracy
(for modulated and un-modulated versions)
Real time clock accuracy: < 2 seconds/day
Disturbance records
Maximum record duration : 50 seconds
No of records : minimum 5 at 10 second
each, maximum 50 at 1
second each
(8 records of 3 seconds
each via IEC 60870-5-103
protocol)
Accuracy
Magnitude and relative phases:
5% of applied quantities
Duration: 2%
Trigger position: 2% (minimum Trigger
100 ms)