User manual

PQM-702, PQM-703 Operating Manual
108
7.2.3 C-6 current clamp
The C-6 is used to measure the alternating cur-
rent with frequencies up to 10 kHz in the
10 mA…10 A range.
The output signal is voltage proportional to the
measured current with the 100 mV/A sensitivity.
The output signal is supplied by a 1.5-meter lead
with a pin adapted for the socket in the meter.
The arrow located on one of the jaws indicates the
current flow direction. It is assumed that the current
is flowing in the positive direction if it is flowing from
the source to the receiver. Such clamp orientation
is required for a correct power measurement.
Warning
Do not use the device on non-insulated conductors with a potential of
more than 600 V in relation to the earth and a measurement category
greater than III.
 Reference conditions
 Temperature: +20…+26°C
 Relative humidity: 20…75%
 Conductor position: conductor centered in jaws
 Sinusoidal current frequency: 48…65 Hz
 Harmonics content: <1%
 Current DC component: none
 Continuous magnetic field: earth field (<40 A/m)
 Alternating magnetic field: none
 Conductors in direct vicinity: no flowing current
 Technical specification
 Accuracy
Current range
Basic uncerta-
inty
1)
Phase error
0.01…0.1 A
 3% + 1 mA
not specified
0.1…1 A
 2.5%
 5
1…12 A
 1%
 3
1)
as % of measured value
 ratio: 100 mV AC/1 A AC
 frequency range: 40 Hz...10 kHz
 insulation type: double, according to IEC 61010-1
 measuring category acc. to IEC 61010-1: III 600 V,
 protection rating acc. to IEC 60529: IP 40, with open jaws: IP 30
 dimensions: 135 × 50 × 30 mm
 weight: about 240 g
 jaws opening: 21 mm
 open jaws height: 69 mm
Fig. 46. C-6 clamp.