KVZR-20A Transformer DC Resistance Tester  

Portable DC winding resistance tester is to check the connection or mechanical characteristics between the windings and the winding to leads, the balance for resistance between the windings, which can ensure the safe running of transformers.

Feature

• 6 levels of output current (max: 20A, min: <5mA) for DC resistance measurement of transformers and mutual inductors.
• Measurement range: 100μΩ to 100KΩ.
• Higher response speed with on-load tap switch activation and automatic data refresh.
• Sound discharge alarm and clear indication to prevent misoperation.
• Complete protection functions for reliable performance against back EMF.
• 7-inch color LCD screen for clear data display and real-time printing.
• Customizable operation interface
• RS485 communication interface for data transmission.
• Large storage capacity for up to 500 test records.
• USB interface for easy test data transfer.
• Flexible parameter settings for transformer details.
• Industrial plastic case for portability and durability.

Technical Specification

1. Output current: 20A, 10A, 5A, 2A, 100mA, <5mA (6 levels for testing).
2. Range:

100μΩ to 1Ω     (20A)

500μΩ to 2Ω     (10A)

1mΩ to 4Ω       (5A)

5mΩ to 10Ω      (2A)

100mΩ to 200Ω   (100mA)

200Ω to 100kΩ     (<5mA)

3. Accuracy: 0.2% ± 2μΩ
4. Resolution: 0.1μΩ
5. Working temperature: -10-50℃
6. Ambient humidity: ≤90% Rh, no condensation
7. Altitude: ≤1000meters

8.Working power supply: AC220V ± 10%, 50Hz ± 1Hz

9. Dimensions: 400mm * 340mm * 200mm
10. Weight: 9Kg