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MAIntenAnce
Before each use, inspect the flexible current transducer and its latching
system for any damage for continued safety. Pay particular attention to the
insulation surrounding the flexible measuring head.
The flexible current transducer and its latching system require no special
care. Ensure that no foreign object obstructs the latching mechanism. Clean
the CT-500 with a damp cloth and a mild detergent. Do not use abrasives,
solvents, or alcohol.
If ct-500 does not perform properly, use the following steps to help isolate
the problem:
• Inspect the coupling system for any damage. If a foreign material is
present, the coupling system will not close properly and errors will
result.
• Inspect the cables between the flexible measuring head and CT-500
circuit box. Also inspect between CT-500 circuit box and DM-5 for any
damage.
• Check the power ON LED on the circuit box is ON.
• Verify the transducer setting on DM-5 is correct.
SPecIFIcAtIonS
current range
output voltage
Measuring range
conductor size
Accuracy (sine wave)*
Phase characteristics
Working voltage
Max allowed input
Possible measurable
conductor size
head circumference
1000 A
AC rms
500 mVac / 1000 Aac (0.5 mV / A)
0 to 1000 A (1850 Apeak)
Ø20 mm (0.787 in) maximum for published accuracy
±0.8% ± 0.2 mV (45 Hz to 65 Hz)
±1.5% ± 0.2 mV (40 Hz to 1 kHz)
45 Hz to 65 Hz within ±2
40 Hz to 1 kHz within ±3
600 Vac rms
1300 Aac continuous
Max. Ø110 mm diameter (accuracy error not
specified)
400 mm (15.75 in)
8
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