Product introduction
In recent years, with the rapid development of power industry , large-capacity increasing use of equipment , using ordinary megger can not detect its insulating properties.
Insulation resistance in proportion to the pressing time during the testing of the large capacity power equipment, longer pressing time maks higher insulation resistance. This phenomenon called absorption phenomenon of insulation. To understand the insulation performance of the test product, firstly, must do its absorption ratio and polarization index test for the next leak , dielectric loss , partial discharge , etc., insulation performance tests to provide security.
This intelligent insulation resistance tester uses advanced MCU control processes, human face machine interface dialogue , easy to carry , easy to operate ; enclosed battery, AC- DC, and has under-voltage protection and battery overcharge protection.The instrument can automatically display the current time , save 8 group of historical test data and time for the trial to provide a great convenience.

Characteristics of the products
1 This instrument uses advanced MCU control processes, human-machine interface dialogue, easy to carry, easy to operate; enclosed battery, AC-DC, and has under-voltage protection and battery overcharge protection. The instrument can automatically display the current time, save 8 group of historical test data and time for the trial to provide a great convenience.
2.NA55 short-circuit current is more than 3mA, to overcome the common type megger short circuit current is small, the test is not accurate, vulnerable to interference and other defects.
3.NA55 do division by sampling voltage and current timely, this way ensuring the accuracy of the resistance value not influence by the unstable voltage during the test process.

Parameters of the products
1, Output voltage:-DC500V,-DC1000V,-DC2500V,-DC5000V
Error: ± 5% FS (FS is the full scale value);
2, Short-circuit current:> 3mA
3, Accuracy
5 ~ 100MΩ error: ± 5% FS (FS is the full scale value);
100 ~ 10GΩ error: ± 5% FS (FS is the full scale value);
10 ~ 200GΩ error: ± 10% FS (FS is the full scale value);
≧ 200GΩ error: ± 20% FS (FS is the full scale value);
4, Use conditions
Ambient temperature: 0 ℃ -40 ℃
Relative humidity: ≤ 70% RH
5, power scope
AC: 220V ± 10%
6, Size and weight
Dimension: 280mm × 210mm × 100mm;
Weight: <3kg