Micom ALSTOM P341, Technical Data Sheet

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P341 Technical Data Sheet
18
P341 Software versions 36 & 71J
IDMT characteristic shape:
±
2% or 50 ms
whichever is greater
DT operation:
±
2% or 50 ms whichever is
greater
Reset: <7 ms
Repeatability: <1%
Overvoltage
Accuracy
DT Pick-up: Setting
±
5%
IDMT Pick-up: Setting
±
5%
Drop-off: 0.98 x Setting
±
5%
IDMT characteristic shape:
±
2% or 50 ms
whichever is greater
DT operation:
±
2% or 50 ms whichever is
greater
Reset: <75 ms
NPS overvoltage
Accuracy
Pick-up: Setting
±
5%
Drop-off: 0.95 x Setting
±
5%
Repeatability (operating threshold): <1%
DT operation:
±
2% or 65 ms whichever is
greater
Instantaneous operation: <60 ms
Instantaneous operation:
(accelerated): <45 ms
Disengagement time: <35 ms
Repeatability (operating times): <10 ms
Underfrequency
Accuracy
Pick-up: Setting
±
0.01 Hz
Drop-off: (S0.025 HZ)
±
0.01 Hz
DT operation:
±
2% or 50 ms whichever is
greater*
* The operating will also include a time for
the relay to frequency track 20 Hz/ second).
Overfrequency
Accuracy
Pick-up: Setting
±
0.01 Hz
Drop-off: (Setting -0.025 Hz)
±
0.01 Hz
DT operation:
±
2% or 50 ms whichever is
greater *
* The operating will also include a time for
the relay to frequency track 20 Hz/ second).
CB fail
Timer accuracy
Timers:
±
2% or 40 ms whichever is greater
Reset time: <30 ms
Undercurrent accuracy
Pick-up:
±
10%
Operating time: < 12 ms (Typical <10 ms)
Reset: < 15 ms (Typical < 10 ms)
Supervisory functions
Voltage transformer supervision
Accuracy
Fast block operation: <25 ms
Fast block reset: <30 ms
Time delay: Setting
±
2% or 20 ms whichever is
greater
Current transformer supervision
Accuracy
IN > Pick-up: Setting
±
5%
VN < Pick-up: Setting
±
5%
IN > Drop-off: 0.9 x Setting
±
5%
VN < Drop-off: (1.05 x Setting)
±
5% or 1 V
whichever is greater
CTS block operation: < 1 cycle
CTS reset: < 35 ms
System checks
Voltage monitors
Accuracy
Gen/Bus Voltage Monitors
Over/Live/Diff voltage:
Pick-up: setting ±3% or 0.1 V whichever is
greater
Drop-off: (0.98 x Setting) ±3%or 0.1 V
whichever is greater
Repeatability: <1%
Bus Under/Dead voltage:
Pick-up: Setting ±3% or 0.1 V whichever is
greater
Drop-off: (1.02 x Setting) ±3%or 0.1 V
whichever is greater
Repeatability: <1%
Generator underfrequency
Pick-up: Setting
±
0.01 Hz
Drop-off: (S0.1 Hz) ±0.01 Hz
Repeatability: <1%