Large Ground Grid Grounding Resistance Tester

• Customization: Available
• After-sales Service: Yes
• Warranty: 1 Year
• Model NO.: KDWS-5A
• Display Digits: Four and a Half
• Power: Electronic
• Customized Support: OEM, ODM, Obm
• Output Current: 100A, 80A, 50A, 30A
• Resolution: 0.1 UΩ
• Transport Package: Carton or Wooden Case
• Trademark: KDZD
• Origin: Hubei, China
• HS Code: 9030332000

Product Description

 

 

The KDWS-5A large-scale grounding resistance tester can measure the grounding resistance of substations (4 Ω), hydro thermal power plants, microwave stations (10 Ω), and lightning rods (10 Ω). It uses a new type of variable frequency AC power supply and adopts measures such as microcomputer processing control and signal processing, which effectively solves the anti-interference problem in the testing process, simplifies the testing operation process, improves the accuracy and precision of the testing results, and greatly reduces the labor intensity and testing cost of the testing personnel.

 

1. Impedance measurement range	1M Ω~200 Ω
2. Resolution	0.001 Ω
3. Measurement error	± (reading × 2+0.005Ω
4. Anti power frequency 50Hz voltage interference capability	10V
5. Test current waveform	sine wave
6. Test current frequency	45Hz, 55Hz dual frequency
7. Maximum output current	5A (45Hz, 55Hz, dual frequency, sine wave)
8. Maximum output voltage	400V (45Hz, 55Hz, dual frequency, sine wave)
9. Current output gear	5/4.5/4/3.5/3/2.5/2/1.5/1A, one gear per 0.5A, 9 gears in total.
10. Requirements for measuring wire	sectional area of copper core of current wire ≥ 1.5mm2; sectional area of copper core of voltage wire ≥ 1.0mm2
11. Power supply	AC220V ± 10%, 50Hz

Performance characteristics

1. The measured power frequency equivalence is good. The test current waveform is a sine wave, with a frequency difference of only 5Hz from the power frequency. Two frequencies, 45Hz and 55Hz, are used for measurement.
2. Strong anti-interference ability. This instrument adopts the frequency difference method for measurement, combined with modern software and hardware filtering technology, making the instrument have high anti-interference performance and stable and reliable test data.
3. High precision. The basic error is only 0.005 Ω, which can be used to measure large grounding grids with very low grounding impedance.
4. Can measure current pile, voltage pile, grounding resistance, step voltage, and contact voltage.
5. Easy to operate. Chinese menu style operation, directly displaying measurement results.
6. Low wiring workload, no need for high current wires.