Designed specifically for low-voltage short-circuit impedance measurement of 35kV and above power transformers in substations, manufacturing plants, and field environments. It is crucial for detecting winding deformation caused by transportation, installation, or short-circuit forces during commissioning, preventative maintenance, and post-fault analysis. Without external auxiliary equipment, technicians can assess the mechanical integrity of transformers using a single 220V power supply by comparing the measured impedance with the nameplate value.
Response within
24 hours
Free warranty
12 month
On-line training
Support
KDRB-ZB is a professional low-voltage short-circuit impedance tester that uses a single-phase 220V power supply and features automatic frequency correction. It uses internal power to control the output voltage/current, eliminating the need for external regulators. Automatic three-phase measurements can be initiated with a single connection, displaying voltage, current, power, frequency, and impedance results on a large LCD screen. The device uses non-volatile memory to store thousands of test records and offers optional external power input for flexible field use.
1. Displays comprehensive parameters for each test: voltage, current, power, frequency, and impedance;
2. Single-phase 220V AC operation; compatible with small UPS (500VA online), suitable for environments without mains power;
3. Dual power supply selection: internal power supply or external regulator input;
4. Easy wiring: single connection initiates automatic three-phase measurement and directly displays results;
5. Automatic frequency correction eliminates errors caused by frequency fluctuations;
6. Built-in non-volatile memory can store thousands of test records;
7. Large LCD screen with full Chinese menus and prompts for intuitive operation;
8. Non-volatile calendar and clock functions.
Measurement accuracy: voltage, current: 0.2
Power: COSφ> 0.1:0.5 grade; COSφ≤ 0.1:1.0 class
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