The KDRB-ZC transformer winding impedance tester is developed by our company and is used for measuring the low-voltage short-circuit impedance of 35KV and above main transformers under on-site and laboratory conditions.

The instrument adopts voltage and current synchronous AC sampling and signal digital processing technology internally, ensuring accurate measurement data.
The instrument adopts a single-phase measurement method. After selecting a transformer connection, the short-circuit impedance of each phase can be automatically calculated after three measurements.
The instrument has the function of automatically converting low current testing to rated current, which is suitable for on-site use.
This instrument can synchronously measure voltage, current, and power. And measure the frequency of the applied power supply.
Built in non power down memory, can store measurement data for a long time, and the instrument comes with a printer.
Large screen LCD display, English menu and operation prompts, simple and intuitive operation. LCD can display clearly under direct sunlight.

Measurement accuracy: Voltage, current: Level 0.2
Power: COS diameter>0.1: 0.5 level; COS diameter ≤ 0.1:1.0 level
Impedance: COS diameter>0.1: 0.5 level; COS diameter ≤ 0.1:1.0 level
Voltage measurement range: AC 10V~600V
Current measurement range: AC 0.5A~10A
Working temperature: -10 ℃~50 ℃
Working humidity: 0-80%
Working power supply: AC220V ± 10% 50Hz ± 1Hz
Dimensions: 360mm × 220mm × 150mm
Instrument weight: 5Kg