4.1
Reference conditions
I Temperature: 18 to 28°C
I Relative humidity: 20 to 75%
I Conductor centred in the jaws
I Sinusoidal current: 48 to 65 Hz
I No direct current
I Instrument impedance: Z ≥ 10 MΩ
I Direct-current magnetic field: earth's magnetic field (< 40 A/m)
I External conductor proximity: no direct of alternating current
I Intrinsic error or phase difference
NOTE: Linear interpolation between each value (see also the graphs in chapter 7. APPENDIX)
Current to be
in AC
measured
in % of In
Intrinsic error (1)
(1) In ±% of the output
(2) See 4.3.1 Overloads
4.2
Measurement range
Current range
Output-to-input ratio
Frequency range
(1) See 4.3.1 Overloads
I I I I I Nominal current (In): 500 A AC
I I I I I Multimeter impedance: ≥ 10 MΩ
4.3
Operating conditions and influences
The current clamp must be used under the following conditions to meet the user safety and measuring
performance requirements.
4.3.1
Overloads
Limit the operating time above 500 A
I ≤ 500 A AC
Current
Working
continuous operation
4. SPECIFICATIONS
2 A
25 A
0.4%
5%
5% +0.5 mV
5%
2 A...600 A~ (1)
1 mV DC/1 A AC
48 to 1000 Hz
500 A AC < 1 ≤ 600 A AC
10 minutes on
30 minutes off
13
100 A
250 A
500 A
20%
50%
In
2%
1%
600 A (2)
120%
2%