Megger Insulation Resistance Tester Analogue and Digital 1010T,5050T 0-500,0-1000 500,1000 8PCS/CTN 16/14kg 205*120*145mm CN;ZHE


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Product Overview

Description


Huazheng Electric HZJD-470A Ground Resistance Tester Digital Earth Resistance Test Instrument



Product Description


Introduction


HZJD-470A digital grounding resistance tester is designed and manufactured according to the new lightning protection grounding resistance detection standard. The short-circuit test current can reach 20mA. The precision 3-wire method or simple 2-wire method can be used to measure the grounding resistance, and has strong consistency in repeated tests. It is widely used in grounding resistance and grounding voltage measurement of electric power, telecommunications, meteorology, oil field, construction, lightning protection and industrial electrical equipment, etc.


 


Technical Specifications




































































































































Function



Ground resistance, ground voltage, low value resistance measurement



Power supply



DC 14.8V 2600mAh rechargeable lithium battery , the battery is fully Charged at about 16.8V



Backlight



Controllable white screen backlight, suitable for use in dark places



Measurement method



Precise three-wire method and simple two-wire method to measure grounding resistance



Measurement methods



Earth resistance measurement: Rated current changing pole method



Voltage to ground: average value rectification (between PE interfaces)



Range



Ground resistance: 0.000Ω~200KΩ



Ground voltage: AC 0.000V~600V (50Hz/60Hz)



Resolution



0.001Ω ; 0.005V



Precision



Ground resistance: ±2%rdg±5dgt


Note: 1. Auxiliary connection Rc: 500Ω~1000Ω error≤±5dgt


2. Auxiliary connection Rp: 500Ω~10KΩ error≤±3dgt


3. When the interference voltage is 5V, the additional error is ≤±5%rdg± 5dgt



Ground voltage: ±2%rdg±3dgt (50Hz/60Hz)



Test voltage waveform



Sine wave



Test frequency



700Hz



Test current



0.000Ω~100.0Ω range: about 20mA constant current


100Ω~200.0KΩ range: about 0.1mA constant current



Product Size



Meter size: length, width and height 258mm×21 5 mm×83mm



Package size: 27 0mm *16 0mm *25 0mm



Test line



3 pieces: red 15m, yellow 10m, green 5m each



Simple test line



2 pieces: 1 piece of red 1.6m and 1 piece of green 1.6m



Auxiliary ground rod



2 pieces: φ 10mm× 20 0mm



Measure time



Ground voltage: about 2 times/second; ground resistance: about 5 seconds/time



Measurement times



More than 5000 times (short circuit test, test once, stop for 30 seconds and test again)



Line voltage



Measured below AC 600V



Communication Interface



With USB interface



Battery voltage



When the battery power is lower than 25%, the low battery voltage symbol is always displayed, reminding that it needs to be charged in time; when the battery power is lower than 10%, the LCD screen continues to flash, and the instrument will automatically shut down after about 5 seconds



Automatic shut-down



When there is no operation, it will automatically shut down after about 15 minutes



Power consumption



Backlight: 25mA Max (power consumption of backlight alone)



Standby: 35mA Max (backlight off after power on)



Measurement: 150mA Max (backlight off)



Overvoltage protection



AC 75V between CE ports


AC 600V between PE ports


AC 600V between PC ports



Insulation resistance



>500MΩ between test line and case



Withstand voltage



AC10.0kV 50Hz between the test line and the case for 1min



Electromagnetic properties



IEC61326(EMC)



Suitable for safety regulations



IEC61010-1 (CAT Ⅲ 300V, CAT IV 150V, pollution degree 2);


IEC61010-031; IEC61557-1 (grounding resistance); JJG 366-2004 (grounding resistance meter).



 





Company Information


HUAZHENG Electric Manufacturing (Baoding) Co., Ltd is established in year of 2008, located at Baoding city, Hebei province, China. It is a professional company specializing in the development and production of electric power testing equipment. Main Product:  transformer oil test series, high voltage test series, cable fault location system, microcomputer relay protection test set, etc. All of our products comply with international quality standard and obtained CE and ISO 9001 certificate. Heibei Huanhai Import & Export Trading Co.,Ltd is a trading company established by Huazheng Electric.


We insist on customer orientation and provide you with high quality products, reasonable prices, timely delivery and efficient service. We are willing to work with global clients for joint development and create value and success for our customers continuously.


 


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Certifications


We have our own manufacturing factory,pls see the below certificate,we are the direct supplier.


We are a new enterprise engaged in development,produce & sale a serious of power system products, such as Cable fault tester,  transformer test class, lightning arrester test class, comprehensive test class. 


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