The KDZR-10A Transformer DC Resistance Tester is a professional portable instrument powered by a 32-bit ARM core, enabling fully automatic self-calibration, current stabilization judgment, and data processing. Equipped with a 7-inch sunlight-readable LCD screen and a built-in thermal printer, it supports on-site data viewing and report printing instantly. Its rechargeable large-capacity lithium battery provides over 3 hours of continuous operation, and the replaceable battery design ensures uninterrupted testing for field engineers. With dual storage (internal and USB) and RS232/USB interfaces, it seamlessly connects to computers for data management, making it an essential tool for power system maintenance.

• High precision with anti-interference and shockproof performance for stable field use.
• Silicone rubber keypad for sensitive operation and extended service life.
• Real-time clock and date display for accurate test data timestamping.
• One-key longitudinal testing for on-load tap changers of transformers.
• Comprehensive anti-back EMF protection to safeguard equipment and operators.
• Compact and lightweight design (3kg) for easy carrying and transportation.
• Built-in help documentation for quick on-site operation guidance.

• Output Current: 10A, 5A, 2A, 1A, 500mA, 200mA, 50mA, 20mA, <5mA
• Measurement Range (10A): 1mΩ ~ 200mΩ
• Measurement Range (5A): 2mΩ ~ 500mΩ
• Measurement Range (2A): 5mΩ ~ 2Ω
• Measurement Range (1A): 10mΩ ~ 4Ω
• Measurement Range (500mA): 100mΩ ~ 10Ω
• Measurement Range (200mA): 200mΩ ~ 20Ω
• Measurement Range (50mA): 1Ω ~ 100Ω
• Measurement Range (20mA): 2Ω ~ 400Ω
• Measurement Range (<5mA): 10Ω ~ 20kΩ
• Resolution: 1μΩ
• Accuracy (≥20mA): ±(0.2% reading + 5 digits)
• Accuracy (<5mA): ±(0.5% reading + 5 digits)
• Dimensions: 300mm × 175mm × 80mm
• Weight: 3000g
• Display: 7-inch full-transmissive LCD screen
• Battery Life: ≥3 hours continuous operation
• Power Supply: Built-in rechargeable lithium battery (AC220V charging)
• Interfaces: RS232, USB
• Storage: Internal memory + USB flash drive support