NA500 Insulation Resistance Tester
- Brand : NANAOELEC
Product introductionMany equipment are asked to do a series of dielectric tests according to electrical testing procedures, such as:cables, motors , generators, transformers, transformers, high voltag
Many equipment are asked to do a series of dielectric tests according to electrical testing procedures, such as:
cables, motors , generators, transformers, transformers, high voltage switches, surge arresters, insulation
resistance test is the first .
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. Nanao Electric Wuhan Electric Co., Ltd. in accordance with standardized protocols special launch
NA500 Power Smart insulation resistance tester ( hereinafter referred to as NA500), for electrical equipment for
insulation, absorption ratio, polarization index test, insulation test for the series provide an initial accurate
Since the charging current is large capacitive directly affects the insulation value of the test sample and therefore
require large charging current , charging ability than the test value , the stronger the closer the true value. NA500
short circuit current is greater than 3mA, to overcome the common type megger short circuit current is small ,
the test is not accurate, vulnerable to interference and other defects. NA500 taking timely do division voltage and
current sampling operation, it is even during the test voltage changes , the ohmic resistance value theorem is
obtained accurately. NA500 intelligent insulation resistance tester 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 .
NA500 Intelligent Insulation Resistance Tester is a new type of intelligent instruments, is the best choice for
testing personnel .
Also called name
Intelligent Insulation resistance tester, insulation resistance tester intelligent, insulation resistance tester,
insulation resistance tester
The 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.NA500 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.NA500 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.
The parameters of the products
1, the output voltage:-DC500V,-DC1000V,-DC2500V,-DC5000V
Error: ± 5% FS (FS is the full scale value);
2, the short-circuit current:> 3mA
3, test 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, conditions of use
Ambient temperature: 0 ℃ -40 ℃
Relative humidity: ≤ 70% RH
5, power scope
AC: 220V ± 10%
6, the size and weight
Dimension: 280mm × 210mm × 100mm;
1 , confirm wiring is correct ( Note: No mop the test line ) before power-on, "high output " light indicates a high
voltage output, the non- touch power lines ! Prohibited during the test plug test leads or shorting the output , in
order to avoid endangering persons and damage to the instrument .
2 , when measured using the internal battery meter display dim or boot does not show that the battery power is
low , should be off the instrument and charging.
Note : The test shows the voltage exceeds the rated voltage selection is large, and for a long time is not stable ,
please do not take the load test to see if the voltage is normal. If you're not normal , please , charging full of
empty again test voltage , the voltage is normal is that the electricity shortage timely charge .
3, the long-term is not used to charge the battery meter should be regularly ( once a month ) . When not in use
and when to turn off the charging instrument .
4 , instruments stored in a dry , clean , non-corrosive gas environment .
5 , a large capacitive load test , the test completed to ensure there is enough time to discharge , the discharge is
completed behind the detachable test leads . ( Large capacitive load is the best over one minute )
6 , the instrument is not connected test insulation resistance when measured display values generally reach
Grade T (1T = 1000G), this value is generally random infinite value , like test the air , do not have practical
7 , if the meter fails, full-time maintenance personnel should be invited to send to the company for repair or not
disassemble the instrument , or cause the loss of my company is not responsible .
( Special Note: Do not touch the high voltage during the test output line , test line connected before power-on
test . Avoid high output when the test output line shorted. )