Atec Zimmer-Electronic-Systems-LMG500 User Manual
Page 7
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Group A(C)
Group B(D)
4 independent power measuring channels,
extendable to 8 channels with extension box or second device
The current and voltage paths of the 4(8) power measuring channels are all
isolated to each other and to earth. This allows a high degree of measuring
freedom in many different power measurement applications.
Wiring settings in () are featured
by option „Star-Delta Conversion“
The adjacent table shows
various types of wiring for
grouped and individual meas-
urement channels. The table
also assigns application exam-
ples for the respective types of
wiring.
Power measurement channels
1(5) and 4(8) can each be
synchronised to their input sig-
nals (fundamental waves etc.)
independent of each other.
Channels 1(5) and 4(8) are then
the synchronisation references
for the other channels con-
tained in groups A(C)
and B(D).
This is a very useful method for
carrying out efficiency meas-
urements for equipment where
input and output have different
frequencies, for example a 3-
phase frequency inverter with
single-phase mains supply, or
uninterruptible power supplies
by use of 8 power measurement
channels.
Technical Data
Voltage measuring ranges U*
Nominal value /V
3
6
12.5
25
60
130
250
400
600 1000
Maximum trms value /V
3.6
7.2
14.4
30
60
130
270
560
1000
1000
Maximum peak value for full scale /V
6.25 12.5 25
50
100
200
400
800
1600
3200
Input impedance
>4.5MΩ || <3pF
Current measuring ranges I*
Nominal value /A
20m
40m
80m
150m 300m 600m 1.2
2.5
5
10
20
32
Maximum trms value /A
37m
75m
150m 300m 600m 1.25 2.5
5
10
20
32
32
Maximum peak value for full scale /A
59m
117m 234m 469m 938m 1.875 3.75 7.5
15
30
60
120
Input impedance
560mΩ
68mΩ
8.2mΩ
1mΩ
Current measuring ranges I
HF
*
Nominal value /A
150m 300m 600m 1.2
Maximum trms value /A
225m 450m 900m 1.8
Maximum peak value for full scale /A
325m 650m 1.3
2.6
Input impedance
0.1Ω
Sensor inputs U
Sensor
,I
Sensor
Nominal value /V
30m
60m
120m 250m 500m 1
2
4
Maximum trms value /V
37m
75m
150m 300m 600m 1.2
2.5
5
Maximum peak value for full scale /V
63m
125m 250m 500m 1
2
4
8
Input impedance
100kΩ || 34pF
Measuring accuracy
Accuracies based on:
1. sinusoidal voltage and current
4. definition of power range as the product of
2. ambient temperature 23 °C
current and voltage range, 0 ≤ IλI ≤ 1, (λ=Power factor=P/S)
3. warm up time 1h
5. calibration interval 12 month
Other values
All other values are derived from the current, voltage and active power values. Accuracies for derived values depend on the
functional relationship (e.g. S = I * U, ∆S/S = ∆I/I + ∆U/U)
Accuracy
± (% of measuring value + % of measuring range)
DC
0.05Hz..45Hz
45Hz..65Hz 65Hz..3kHz 3kHz..15kHz 15kHz..100kHz
100kHz..500kHz
500kHz..1MHz
1MHz .. 3MHz
3MHz .. 10MHz
Voltage
U*
0.02+0.06
0.02+0.03
0.01+0.02
0.02+0.03
0.03+0.06
0.1+0.2
0.5+1.0
0.5+1.0
3+3
f/1MHz*1.2 + f/1MHz*1.2
Usensor
0.02+0.06
0.015+0.03
0.01+0.02 0.015+0.03
0.03+0.06
0.2+0.4
0.4+0.8
0.4+0.8
f/1MHz*0.7 + f/1MHz*1.5
f/1MHz*0.7 + f/1MHz*1.5
Current
I* (20mA .. 5A)
0.02+0.06
0.015+0.03
0.01+0.02 0.015+0.03
0.03+0.06
0.2+0.4
0.5+1.0
0.5+1.0
f/1MHz*1 + f/1MHz*2
-
I* (10A .. 32A)
0.02+0.06
0.015+0.03
0.01+0.02 0.015+0.03
0.03+0.06
0.3+0.6
f/100kHz*0.8 + f/100kHz*1.2
-
-
-
I HF
0.02+0.06
0.015+0.03
0.01+0.02 0.015+0.03
0.03+0.06
0.2+0.4
0.5+1.0
0.5+1.0
f/1MHz*1 + f/1MHz*2
-
I sensor
0.02+0.06
0.015+0.03
0.01+0.02 0.015+0.03
0.03+0.06
0.2+0.4
0.4+0.8
0.4+0.8
f/1MHz*0.7 + f/1MHz*1.5
f/1MHz*0.7 + f/1MHz*1.5
Power
U* / I* (20mA .. 5A)
0.032+0.06
0.028+0.03
0.016+0.02 0.028+0.03 0.048+0.06
0.24+0.3
0.8+1.0
0.8+1.0
f/1MHz*3.2 + f/1MHz*2.5
-
U* / I* (10A .. 32A)
0.032+0.06
0.028+0.03
0.016+0.02 0.028+0.03 0.048+0.06
0.32+0.4
f/100kHz*1 + f/100kHz*1.1
-
-
-
U* / I HF
0.032+0.06
0.028+0.03
0.016+0.02 0.028+0.03 0.048+0.06
0.24+0.3
0.8+1.0
0.8+1.0
f/1MHz*3.2 + f/1MHz*2.5
-
U* / I sensor
0.032+0.06
0.028+0.03
0.016+0.02 0.028+0.03 0.048+0.06
0.24+0.3
0.72+0.9
0.72+0.9
f/1MHz*3 + f/1MHz*2.3
f/1MHz*1.5 + f/1MHz*1.4
U sensor / I* (20mA .. 5A)
0.032+0.06
0.024+0.03
0.016+0.02 0.024+0.03 0.048+0.06
0.32+0.4
0.72+0.9
0.72+0.9
f/1MHz*1.4 + f/1MHz*1.8
-
U sensor / I* (10A .. 32A)
0.032+0.06
0.024+0.03
0.016+0.02 0.024+0.03 0.048+0.06
0.4+0.5
f/100kHz*1 + f/100kHz*1
-
-
-
U sensor / I HF
0.032+0.06
0.024+0.03
0.016+0.02 0.024+0.03 0.048+0.06
0.32+0.4
0.72+0.9
0.72+0.9
f/1MHz*1.4 + f/1MHz*2
-
U sensor / Isensor
0.032+0.06
0.024+0.03
0.016+0.02 0.024+0.03 0.048+0.06
0.32+0.4
0.64+0.8
0.64+0.8
f/1MHz*1.12 + f/1MHz*1.5
f/1MHz*1.12 + f/1MHz*1.5