CR-ⅢB tester accords with
GB/T11022-1999 and DL/T845.4, applying AC depressurization method to measure
the contact resistance and circuit resistance of the hi-voltage switchgear. The
advanced HF on-off power supply provides above 100A AC measure current for the
tester. The Micro-computer makes the measure procedure automatic by switching
on the power supply and pressing the measure button, processing the data and
digital-filtering to guarantee the measurement precision. The value of the
circuit current and circuit resistance of the tested object shall be displayed
and print out. The tester has the powerful capacity of anti-jamming, and the
measurement result shall not change with the measure current. CR-ⅢB with a on-line
self-inspection function. If the clients doubt the measure result or the tester
itself during the measurement operation, the tester can inspect itself by
pressing the self-inspection button without changing any wire connections. If
the measured data is same as the self-inspection data which means the tester is
fine.
Surrounding temperature: room temperature;
Relative humidity: <85%;
Measuring scope: 0----4000μΩ;
Displaying method: current, resistance are displayed in 4 numerals;
Min. resolving power: 0.1μΩ;
Measuring error: <1%;
Measuring current: >100A;
Power: AC 220V ± 10% 50Hz
Weight: 8.0 kg
Volume: 420 ×280×210mm
