User manual

PQM-702, PQM-703 Operating Manual
104
 operating manual,
 guarantee card,
 calibration certificate.
7.2 Optional accessories
Additionally, the following items that are not included in the scope of standard equipment can
be purchased from the manufacturer or the distributors:
 CT clamps C-4 1000 A AC – WACEGC4OKR,
 Hall effect clamps C-5 1000 A AC/DC – WACEGC5OKR,
 CT clamps C-6 for low currents in 10A AC transformers – WACEGC6OKR,
 CT clamps C-7 100A AC – WACEGC7OKR,
 flexible clamps (Rogowski coil) F-1 for current up to 3kA AC (length: 120cm) – WACEGF1OKR,
 flexible clamps (Rogowski coil) F-2 for current up to 3kA AC (length: 80cm) – WACEGF2OKR,
 flexible clamps (Rogowski coil) F-3 for current up to 3kA AC (length:45cm) – WACEGF3OKR,
 Li-Ion rechargeable battery (replaceable by SONEL after-sale services) – WAAKU11,
 hard case for current clamps – WAWALL2,
 external GPS antenna 10 m – WAPOZANT10GPS.
7.2.1 C-4 current clamp
The C-4 clamp is used to measure the alternating current in
medium and high power electrical installations. The output sig-
nal is voltage proportional to the measured current. 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 measure-
ment.
Note
Currents above 1200 A must not be measured. The measurement time for currents above
1000 A shall be limited as follows:
Current range
I  1000 A
1000 A  I  1200 A
Operation mode
continuous
1
15-minute measurement,
then 30-minute break
1)
For frequency f  1 kHz. Limitation of maximum current for continuous operation for frequen-
cies above 1 kHz according to the relationship I
cont
= 1000 A/f [kHz]
Fig. 44. C-4 clamp.