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HHM73
Specifications
ELECTRICAL
Current Range:
60 A range:
0.2 to 40 A AC (60 A Peak)
0.4 to 60 A DC
600 A range:
0.5 to 400 A AC (600 A Peak)
0.5 to 600 A DC
Output Signal:
10 mV/A on 60 A range
1 mV/A on 600 A range
Accuracy and Phase Shift*:
60 A Range:
0.5 to 40 A: 1.5% reading ± 0.5 A
40 to 60 A DC only: 1.5% reading
Phase Shift:
45 to 65 Hz 10 to 20 A: £ 3¡
20 to 40 A: £ 2¡
600 A Range:
0.5 to 100 A: 1.5% reading ± 1 A
100 to 400 A: 2.0% reading
400 to 600 DC only: 2.5% reading
Phase Shift:
45 to 65 Hz 10 to 100 A: £ 2¡
100 to 400 A: £ 1.5¡
Overload:
2000 A DC and 1000 A AC
continuous up to 1 kHz
*Reference conditions: 18¡ to 28¡C, 20 to 75% RH, external magnetic field <40
A/m, no DC component, no external current carrying conductor, test sample
centered, 1 MW £100 pF load, zero adjustment prior to measurement [DC only]
DC to 65 Hz. Battery voltage 9 V ± 0.1 V.
HHM76
Specifications
ELECTRICAL
Current Range:
150 A Range:
0.2 to 100 A AC (150 A Peak)
0.4 to 150 A DC
1500 A Range:
0.5 to 1000 A AC (1400 A Peak)
0.5 to 1500 A DC
Output Signal:
10 mV/A on 150 A range
1 mV/A on 1500 A range
Accuracy and Phase Shift*:
150 A Range:
0.5 to 20 A: 1.5% reading ± 0.5 A
20 to 100 A: 1.5% reading
100 to 150 A DC only: 2.5% reading
Phase Shift:
45 to 65 Hz 10 to 20 A: £ 3¡
20 to 100 A: £ 2¡
1500 A Range:
0.5 to 100 A: 1.5% reading ± 1 A
100 to 800 A: 2.5% reading
800 to 1000 A: 4% reading
1000 to 1400 DC only: 4% reading.
Phase Shift:
45 to 65 Hz 10 to 200 A: £ 2¡
200 to 1000 A: £ 1.5¡
4
Typical
Response
Model HHM73
Frequency Response at 100 A
10
100
0
-2
-4
-6
-8
-10
-12
Model HHM76
Frequency Response at 100 A
10
100
0
-5
-10
-15
Frequency in Hz
Curves
1000
Frequency in Hz
1000
17
10,000
10,000
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