HZ-3310D 10Ampere 3 Phase Transformer DC Resistance Tester
Overview
The DC resistance of a transformer is a necessary measuring item in the testing, installation, commissioning testing and electric power department’s preventive testing of semi-finished products and finished products in transformer manufacturing. It can be used to effectively detect the selection of transformer coils, welding, loose connection parts, missing strands, broken wires, etc.In order to meet the needs of Fast measurement of DC resistance of transformers, huazheng has developed a new generation of huazheng series DC resistance test instrument using its own technological advantages. The instrument uses a new power supply technology and has features such as small size, light weight, large output current, etc. It is a test instrument optimized for measuring the three-phase winding DC resistances of large-capacity transformers. The instrument can be used to measure the three-phase winding DC resistances of a transformer at the same time. For an on-load tap changing transformer, there is no need for discharging and tapping is directly adjusted with the instrument; the measuring time is 1/3 of traditional single-phase measuring time, which can greatly shorten working time. The whole instrument is controlled by SCM and automatically achieves functions such as self-check, data processing, display, etc. Moreover, the instrument has functions such as automatic discharging, audible alarming of discharging, etc. The instrument has advantages such as stable test data, high accuracy, quick speed and good repeatability, and is the best choice for measuring the DC resistance of transformer on site.
Specifications
1.Output current: automatic,10A、3A、1A、300m A、100mA 、30mA、10mA
2.Range:
Automatic（30mA -10A） 0 - 600Ω (three-phase simultaneous measurement 0 - 360Ω)
10A 0 – 2.0Ω (three-phase simultaneous measurement 0 – 1.2Ω)
3A 0.003 – 6.0Ω (three-phase simultaneous measurement0.001–0.6Ω)
1A 0.01 – 20Ω (three-phase simultaneous measurement0.002–1.2Ω)
300A 0.03 – 60Ω (three-phase simultaneous measurement0.005–2.5Ω)
100m A 0.1 – 200Ω (three-phase simultaneous measurement0.01 – 6.0Ω)
30m A 0.5 – 600Ω (three-phase simultaneous measurement0.02 - 12Ω)
10m A 20 – 20kΩ (three-phase simultaneous measurement0.1 - 60Ω)
100m A 0.5 – 200Ω (three-phase simultaneous measurement0.5 - 120Ω)
20m A 10 – 20kΩ only single-phase test)
Accuracy: 0.2%±0.4μΩ
Minimum resolution: 0.01μΩ
Working temperature: -20~ 40℃
Ambient humidity: ≤80%RH, no dewing
Working power supply: AC: AC220V±10%, 50Hz±1Hz
Volume: length 420mm× width 320mm× height 200mm
Net weight: 13.8kg