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KDZR-10A: Portable 10A Transformer DC Resistance Tester with Multi-Range Measurement & Field-Ready D
KDZR-10A: Portable 10A Transformer DC Resistance Tester with Multi-Range Measurement & Field-Ready D

KDZR-10A: Portable 10A Transformer DC Resistance Tester with Multi-Range Measurement & Field-Ready D

Applications:

  • Measuring DC resistance of transformer windings (single-phase or three-phase)
  • Detecting loose connectionsbroken strands, or imbalance in windings
  • Performing longitudinal comparison tests on on-load tap changers (OLTC) with single power-up
  • Testing current/voltage transformer coils and reactor windings
  • Field commissioning, routine maintenance, and fault diagnosis in substations and power plants

  • Response within
    24 hours

  • Free warranty
    12 month

  • On-line training
    Support

Profile:

Engineered for reliability in demanding environments, the KDZR-10A combines high precision, multi-range current output (10 A down to <5 mA), and intelligent protection against back EMF. Its sunlight-readable 7-inch transparent LCD, embedded thermal printer, and intuitive on-screen guidance make operation straightforward—even for first-time users. With USB/RS232 interfaces, non-volatile storage, and hot-swappable batteries, it supports seamless data management from site to office.

Features:

✅ Wide Measurement Range: From 1 mΩ to 20 kΩ across 9 auto-selectable current levels
✅ High Accuracy: ±(0.2% rdg + 5 digits) for currents ≥20 mA; ±(0.5% rdg + 5 digits) for <5 mA
✅ Field-Optimized Design: Lightweight (only ~2.5 kg), shock-resistant, and fully portable
✅ Sunlight-Readable Display: Full-transmissive 7-inch color LCD for outdoor use
✅ Long-Lasting Battery: Rechargeable Li-ion pack supports >3 hours continuous use; hot-swappable
✅ Built-in Thermal Printer: Instantly print test results on-site
✅ Smart User Guidance: On-screen wiring diagrams, help menus, and operation tips
✅ Robust Data Management: Stores results internally + exports via USB/RS232 to PC
✅ Back EMF Protection: Advanced circuitry safeguards instrument during inductive discharge
✅ One-Power OLTC Test: Complete longitudinal resistance test on tap changers without reconnection

Parameter:

Parameter Specification
Model KDZR-10A
Output Current 10A, 5A, 2A, 1A, 500mA, 200mA, 50mA, 20mA, <5mA
Measurement Ranges - 10A: 1 mΩ – 200 mΩ
- 5A: 2 mΩ – 500 mΩ
- 2A: 5 mΩ – 2 Ω
- 1A: 10 mΩ – 4 Ω
- 500mA: 100 mΩ – 10 Ω
- 200mA: 200 mΩ – 20 Ω
- 50mA: 1 Ω – 100 Ω
- 20mA: 2 Ω – 400 Ω
- <5mA: 10 Ω – 20 kΩ
Resolution 1 µΩ
Accuracy ±(0.2% rdg + 5 digits) for ≥20 mA
±(0.5% rdg + 5 digits) for <5 mA
Display 7-inch full-transmissive color LCD
Power Supply Built-in rechargeable lithium battery (AC adapter optional)
Battery Life >3 hours continuous operation; hot-swappable
Interfaces RS232, USB, thermal printer
Data Storage Internal memory + U-disk support
Clock Non-volatile real-time clock with date/time
Dimensions 300 × 175 × 80 mm
Operating Environment Temperature: –10°C to +50°C
Humidity: ≤85% RH (non-condensing)