HQ-1A DC Resistance Tester

HQ-1A DC Resistance Tester

Adopting new power technology, with multiple current levels and a wide measurement range, the current can be automatically selected according to the load, making it suitable for measuring the DC resistance of small and medium-sized transformers and voltage transformers. Protection function *, can reliably protect against the impact of back electromotive force on the instrument, and has more reliable performance.

Functional Features

1.1 The whole machine is controlled by a high-speed microcontroller, with a high degree of automation and easy operation.

1.2 The instrument adopts a new power technology, with multiple current levels and a wide measurement range. It can automatically select the current according to the load and is suitable for measuring the DC resistance of small and medium-sized transformers and voltage transformers.

1.3 Protection function *, can reliably protect against the impact of back electromotive force on the instrument, and has more reliable performance.

1.4 It has an audible discharge alarm, clear discharge indication, and reduces misoperation.

1.5 Fast response speed, can directly switch to on load tap changer in measurement state, and the instrument automatically refreshes data.

1.6 Intelligent power management technology reduces internal heating of instruments and saves energy.

1.7 The instrument is equipped with a non power-off clock inside.

The instrument has an internal non power down memory that can save data.

HQ-1A DC Resistance Tester

technical indicators

2.1 Output current:<5mA, 40mA, 200mA, 1A, 5A, 10A, automatic

2.2 Resolution: 0.1 μ Ω

2.3 Range: 100 Ω -200K Ω (<5mA range)

1Ω-500Ω （40mA 档）

100mΩ-100Ω （200mA 档)

5mΩ-20Ω （1A 档)

1mΩ-4Ω （5A 档)

0.2mΩ-2Ω （10A 档)

2.4 Accuracy: 2 ‰

2.5 Working temperature: 0-40 ℃

2.6 Working humidity:<90% RH, no condensation