Profile:
KDZR-S20A is a professional DC three-phase resistance tester capable of simultaneously testing three phases of YN/yn transformers and performing single-phase testing (single connection) on any winding configuration. It employs advanced power supply technology and microcontroller control, with a measurement range of 250μΩ to 10Ω and a resolution of 0.01μΩ. The device can store 500 test records, calculate temperature correction values, and features automatic discharge protection. The robust and durable design weighs only 15kg.
Features:
1. YN/yn Connection Transformer Three-Phase Testing: Simultaneously tests the resistances of A0, B0, and C0 with a single connection and automatically calculates the three-phase unbalance rate;
2. Any Transformer Connection Single-Phase Testing: Tests any winding without changing leads;
3. Built-in test matrix: Saves phase resistance values and three-phase unbalance rates for each tap position; prints temperature-corrected DC resistance values;
4. 5.7-inch LCD screen, clearly visible even in direct sunlight;
5. Built-in high-speed mini thermal printer for printing measurement and historical data;
6. Internal storage for 500 test records, with USB storage support;
7. Comprehensive back EMF protection for enhanced safety;
8. Automatic discharge with audible alarm to prevent misoperation and ensure equipment and personnel safety;
9. Wide operating temperature range, high accuracy, shock resistance, interference resistance, and portability.
Parameter:
Output current: Three-phase test: 2*10A, 2*5A, 2*2A
Single-phase test: 20A, 10A, 2A
Test scope:
2 x 10A: 500μΩ to 500mΩ
2*5A: 1 Mω to 1Ω
2*2A: 2.5mΩ ~ 2.5Ω
20A: 250μΩ to 1Ω
10A: 500μΩ to 2Ω
2A: 2.5mΩ to 10Ω
Resolution: 0.01μΩ
Measurement accuracy: ±(0.2% reading +0.2μΩ)
Overall dimensions: 420mm×250mm×340mm
Weight: 15kg
