Jk300-5ajk300-10a DC resistance tester

The JK300-5 A/JK300-10A series DC resistors are mainly used for measuring DC resistors of small and medium-sized transformers, engines, motors, transformers, etc. The instrument is equipped with multiple current levels to meet various measurement needs. Batteries can be selected according to the needs to meet field measurement requirements.
Main functions and features:
1. The instrument adopts a vertical chassis design, suitable for on-site use and easy to absorb shock.
2. The instrument comes with a perpetual calendar clock and power down storage, which can store 1000 sets of test data.
3. A 65K true color LCD with a 320 × 240 dot matrix, displaying clearly under strong light.
4. The protection function is complete and can protect against the impact of back electromotive force on the instrument, making its performance more reliable.
5. Fast response speed, can directly switch to on load tap changer in measurement state, and the instrument automatically refreshes data.
6. The instrument is equipped with a micro printer that can print test results.
7. There are multiple current levels and a wide testing range, and the current can be automatically selected according to the load.
8. It has an audible discharge alarm, clear discharge indication, and reduces misoperation.
9. The instrument is equipped with RS232 and USB interfaces, which can communicate with computers and store data on USB drives.
Main technical indicators:
1. Output current: JK300-10A: 10A, 5A, 1A, 200mA, 40mA,<5mA, automatic
JK300-5 A：5 A、1A、200mA、40mA、<5mA、 automatic
2. Test range: 10A: 0.5m Ω~800m Ω
5 A：1mΩ～2Ω
1A：5mΩ～10Ω
200mA：100mΩ～50Ω
40mA：500mΩ～250Ω
<5mA：50Ω～20KΩ
3. Resolution: up to 0.1 μ Ω
4. Test accuracy: 0.2%
5. Dimensions: 400 × 200 × 280 (mm)
6. Working temperature: -20 ℃~40 ℃
7. Working humidity:<80% RH, no condensation
8. Working voltage: AC220V ± 10%
9. Working frequency: 50Hz