JKR3310 three-channel DC resistance tester

JKR3310 three channel DC resistance tester is used to measure the DC resistance at the high voltage side of large capacity transformers. It can simultaneously measure the three phases A, B and C at the high voltage side of large capacity transformers with neutral points. It can adjust the on load tap changer during the test process, improve the working efficiency, and solve the problem of long measurement time for large capacity transformers.
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 has a power-off storage function, which can store test data.
3. Using a large LCD screen with Chinese prompts for operation.
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. It can measure and save data simultaneously for three phases, and automatically calculate the three-phase imbalance rate.
Main technical parameters:
1. Output current: Three phase test: 2 * 10A, 2 * 5A, 2 * 2A
Single phase testing: 20A, 10A, 2A
2. Test range: 2 * 10A: 500 μ Ω～ 500m Ω
2*5 A：1mΩ～1Ω
2*2A：2.5mΩ～2.5Ω
20A：250μΩ～1Ω
10A：500μΩ～2Ω
2A：2.5mΩ～10Ω
3. Resolution: up to 0.1 μ Ω
4. Test accuracy: 0.2%
5. Dimensions: 420 × 250 × 340 (mm)
6. Working temperature: -20 ℃~40 ℃
7. Working humidity:<80% RH, no condensation
8. Working voltage: AC220V ± 10%
9. Working frequency: 50Hz