Micom ALSTOM P341, Техническое описание

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P341 Technical Data Sheet
17
P341 Software versions 36 & 71J
Wattmetric SEF accuracy
P = 0 W Pick-up: ISEF>
±
5%
P > 0 W Pick-up: P>
±
5%
P = 0 W Drop-off: (0.95 x ISEF>)
±
5%
P > 0 W Drop-off: 0.9 x P>
±
5%
Boundary accuracy:
±
5% with 1
°
hysteresis
Repeatability: 5%
Zero sequence polarizing quantities
accuracy
Operating boundary Pick-up:
±
2
°
of RCA
±
90
°
Hysteresis: <3
°
Vnpol Pick-up: Setting
±
10%
Vnpol Drop-off: 0.9 x Setting or 0.7 V
(whichever is greater)
±
10%
Negative sequence polarizing quantities
accuracy
Operating boundary Pick-up:
±
2
°
of RCA
±
90
°
Hysteresis: <3
°
V2pol Pick-up: Setting
±
10%
V2pol Drop-off: 0.9 x Setting or 0.7 V
(whichever is greater)
±
10%
I2pol Pick-up: Setting
±
10%
I2pol Drop-off: 0.9 x Setting
±
10%
Restricted earth fault
Accuracy
Pick-up: Setting formula
±
5%
Drop-off: 0.80 (or better) of calculated
differential current
High impedance Pick-up: Setting
±
5%
High impedance operating time: <30 ms
Transient overreach and overshoot
Accuracy
Additional tolerance X/R ratios:
±
5% over the X/R ratio of 1…90
Overshoot of overcurrent elements: <40 ms
Disengagement time: <60 ms (65 ms SEF)
Neutral displacement/residual
overvoltage
Accuracy
DT/IDMT Pick-up: Setting
±
5%
Drop-off: 0.95 x Setting
±
5%
IDMT characteristic shape:
±
5% or 55 ms
whichever is greater
DT operation:
±
2% or 55 ms whichever is
greater Instantaneous operation <55 ms
Reset: <35 ms
Repeatability: <1%
Rate of change of frequency ‘df/dt’
Accuracy
Fixed Window
Pick-up: Setting ±0.05 Hz/s or ±3% whichever
is greater
Repeatability: <5%
Rolling Window
Pick-up: Setting ±0.01 Hz/s or ±3% whichever
is greater
Repeatability: <5%
Freq Low, Freq High
Pick-up: Setting ±2% or ±0.08 Hz whichever is
greater
DT operation
Fixed Window:
Setting ±2% or ±(40+20*X*Y)ms
Repeatability: <5%
Rolling Window
Setting ±2% or ±(60+20*X+5*Y)ms
Note: X = average cycles, Y = Iterations
Repeatability: <20%
df/dt
Accuracy
Pick-up: Setting
±
0.5 Hz/s
Operating time:
±
2% or 160 ms whichever is
greater
Lower/Upper dead band operating time:
±
2%
or 160 ms whichever is greater
Operation over dead band:
±
2% or 170 ms
whichever is greater
Repeatability: <5%
Voltage vector shift
Accuracy
Pick-up: Setting
±
0.5
°
Trip pulse time: 500 ms
±
2%
Reconnect delay
Accuracy
Operating time:
±
2% or 50 ms whichever is
greater
Undervoltage
Accuracy
DT Pick-up: Setting
±
5%
IDMT Pick-up: 0.95 x Setting
±
5%
Drop-off: 1.05 x Setting
±
5%