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Electrical Specifications
Output
Range
Sensitivity
40 A
10 mV/A
400 A
1 mV/A
[1] Typical accuracy applies across all frequency ranges above 440Hz.
• The current conductor must be centered within the jaw aperture and no influence from
Current Clamp with
adjacent currents.
BNC connector
• Connect to load impedance > 1 MW ||100 pF.
• Crest factor < 3.
Current Clamp with
BNC connector
Figure 1: Connection Diagram
Alignment Marks
Put only one conductor within the jaws and align the conductor to the
indicated marks as much as possible in order to meet the accuracy
specifications. Make sure the current clamp is perpendicular to
the conductor.
Current Range Selection
Release the yellow button for 40 A range and lock the button for 400 A range.
Button
Release
Lock
Operation
AC current can be measured without removing the conductor out of the circuit by following the procedure
shown below:
1.
Connect the current clamp to a multimeter or oscilloscope as shown in Figure 1.
2.
Set the multimeter to measure ACV with measurement range greater than 400 mV full scale.
3.
Position and align the jaw to a single conductor accordingly.
4.
Ensure that the arrow marked on the clamp jaw points towards the load for phase measurements, or
away from the load (toward the source) for neutral measurements.
5.
Observe the AC value on the multimeter or the waveform on the oscilloscope which is proportional to
the current.
6.
Select a lower range on the current clamp and set the corresponding sensitivity (mV/A setting) on the
oscilloscope if required.
± (% of reading + as specified below) at 23 °C ± 5 °C, with relative humidity less than
Span
0.5 A ~ 40 A
5 A ~ 40 A
40 A ~ 200 A
200 A ~ 400 A
Figure 3: Conductor Allignment Direction
Accuracy
80% RH
48 Hz to 65 Hz
2 % + 0.5 A
2.5 % + 0.5 A
2 % + 0.5 A
1.5 % + 0.5 A
BNC-to-banana
plug adapter
Oscilloscope
Range
~ 40 A
~ 400 A
40 Hz to 48 Hz/
65 Hz to 1 kHz
[1]
5 % + 0.5 A
4.5 % + 0.5 A
4 % + 0.5 A
3.5 % + 0.5 A
Multimeter
Figure 2: Allignment Marks
Output
~ 10 mV/A
~ 1 mV/A
1 kHz to 10 kHz
[1]
10 % + 0.5 A
12.5 % + 0.5 A
12 % + 0.5 A
11.5 % + 0.5 A
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