36
5 - ELECTRICAL SPECIFICATIONS
Range
(1)
Measurement extent
Resolution
Accuracy
A AC RMS
A DC
(4) (6)
400 A (2)
0.2 A...399.9 A
± 399.9 A
100 mA
2.5% rdg
1000 A (3)
400 A...1000 A
± 1400 A
1 A
(5)
±2counts
(1) On automatic and manual
(2) From 0.2 A to 50 A: 2% rdg ± 10 counts
(3) Accuracy given from 0 to 90% of the range
From 90 to 100% of the range: 5% max
NB
: It is the form of the jaws, thus the cable clamping capacity, that limits the
current range of the clamp. The measurement range is greater.
(4) Supplementary error with crest factor in A AC RMS (< 1500 A peak)
Fc from 1.5 to 3: 5% rdg
Fc from 3 to 5: 12% rdg
(5) In RMS A AC up 800 A to 1000 A, accuracy 5 % rdg ± 5 pt
In A DC up 1000 A to 1400 A, accuracy 8% rdg ± 5 pt
(6) Supplementary error in A AC, depending of frequency (from 65Hz to 450Hz) : < 5%
■
Permitted overload:
1000 A RMS permanent up to 1 kHz
Temperature of conductor
≤
90°C
Reference conditions
■
Temperature: +20°C to +26°C
■
Relative humidity: 45% to 75% RH
■
Battery voltage: 8.5 V to 9 V
■
Position of the conductor: centred in the clamp
■
Absence of external AC magnetic field
■
Absence of electric field
■
Measurement on sinusoidal signal from 45 Hz to 65 Hz
Measurement extent on AC
From 45 Hz to 450 Hz
Accuracy
The intrinsic error is expressed as a ± % of reading (rdg) and in measurement counts
(counts).
5-1 A AC RMS AND A DC CURRENT
