Siemens SENTRON 3WL10 Manual page 85

Metering functions of the ETUs of the 6-series
Instantaneous values
Currents (rms value)
Ground fault current
Phase-to-phase voltage (rms value)
Phase-to-neutral voltage (rms value) V
Phase sequence
Frequency
Active power
Reactive power
Apparent power
Power factor (p.f.)
Peak factor
Counter
(recorded since installation or last reset)
Active energy
Reactive energy
Apparent energy
Measuring interval memory of the individual parameters for each interval with a time stamp
Current: smallest and largest
Phase-to-phase voltage: smallest
and largest
Active power: mean and largest
Reactive power: mean and largest
Apparent power: mean and largest
Data log - can be analyzed with the freely available powerservice software
Recording and storage of measured values with high-resolution sampling rate (buffer memory)
Currents
Voltages
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Manual, 10/2018, L1V30499596002-01
Measured values Precision
A L1, L2, L3, N
A I
g
V U12, U23, U31
U1, U2, U3
—
Hz f
kW P1, P2, P3, P
tot
kvar Q1, Q2, Q3, Q
tot
kVA S1, S2, S3, S
tot
L1, L2, L3, N
total
Measured values Precision
kWh E total
p
E drawn
p
E consumed
p
kvarh E total
q
E drawn
q
E consumed
q
kVAh E total
s
Measured value
A I , I
min max
V U , U
min max
kW P , P
mean max
kvar Q , Q
mean max
kVA S , S
mean max
Measured values
A L1, L2, L3, N, I
g
V U12, U23, U31
Reference standard: IEC 61557-12
1%, class 1
2%
0.5%
0.5%
—
0.2%
2%
2%
2%
2%
—
2%
2%
2%
Clocking Monitoring period Metering module
Fixed or syn- Duration: 5 to
chronizable via 120 min
test device
Number of inter-
vals: 24
4)
Description
2.8 Electronic trip unit ETU
Metering module
MF required
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Metering module
MF required
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MF required
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Metering module
MF required
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