8 Equipment
81
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
maximum measured conductor diameter:
20 mm
probe lead length:
1.5 m
operating temperature:
–10
C…+55
C
humidity:
85% RH
height:
2000 m
electromagnetic compatibility:
IEC 61000-6-3:2008
IEC 61000-6-2:2008
8.3.4 C-7(A) current probe
C-7(A) Probes are used to measure alternating currents in net-
works of low and medium power within the range up to 100 A.
The output signal is a voltage proportional to the measured current
at the sensitivity of 5 mV/A. It is introduced via a cable (length: 1.5
m) ended with a plug suitable for a socket in the meter.
The arrow marked on one of the probes indicates the direction
of current flow. It is assumed that the current flows in the positive
direction if it flows from the source to the receiver. This orientation of
probes is required for the correct power measurement.
Clamps with letter 'A' at the end of marking (e.g. C-7A) are
clamps with automatic type detection in compatible devices. Other
parameters are the same as in the case of clamps without automatic
clamp type detection.
Warning
Do not use non-insulated probes for conductors with a
potential exceeding 300 V with respect to the ground and
in systems with the measurement category higher than III.
Reference conditions
temperature:
+18…+28°C
relative humidity:
<85% (non-condensing)
Technical data
test range
0…100 A AC
frequency range
40 Hz..3 kHz
maximum allowable continuous current
100 A AC (50/60 Hz)
accuracy (sine wave)
Fig. 4. C-7(A) probe.
Summary of Contents for PQM-700
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