On-Load Tap Changer Analyzer

The on-load tap changer is the only moving part connected to the transformer circuit; therefore, testing of on-load tap changers is receiving increasing attention. The "Regulations for Handover and Preventive Testing of Power Equipment" require inspection of the on-load tap changer's operating sequence and measurement of switching times, among other parameters. This instrument is primarily used to measure the transient waveforms, transient times, instantaneous transient resistance values, and three-phase synchronism of transformer on-load tap changers.

1. This tester is a portable device that is compact and lightweight.
2.  It features simple operation, high accuracy, interference resistance, shock resistance, and portability;
3.  It uses a high-capacity lithium battery that provides over 6 hours of continuous operation on a single charge, and the battery can be replaced at any time to ensure uninterrupted testing for users;
4.  It is equipped with comprehensive reverse voltage protection;
5. It offers fast measurement speeds and accurate, stable data, automatically calculating transition resistance and transition time values;
6. The testing process is microprocessor-controlled, automatically performing self-calibration, current stabilization detection, data processing, and value display;
7.  It features a 7-inch full-transmission LCD screen that remains clearly visible even in direct sunlight;
8. It includes a built-in thermal printer for convenient on-site printing;
9. Non-volatile clock and date display; features both internal storage and USB flash drive storage capabilities for expanded data capacity; equipped with RS-232 and USB interfaces for convenient data transfer to computers.
10. The instrument features silicone rubber keys, enhancing tactile feedback during use and ensuring more responsive operation; the silicone material also extends the lifespan of the keys.
11. The instrument's software is fully featured, with built-in user manuals, key descriptions, wiring diagrams, precautions, and other guides for easy reference during on-site testing.
12.  The instrument delivers high output current and is lightweight;
13.  Two current output settings provide a wider testing range and higher stability;

• Output Current: 1.0A, 0.5A
• Measurement Range: Transition Resistance: 0.5Ω–20Ω (1.0A), 0.5Ω–40Ω (0.5A)
• Transition Time: 0–250 ms
• Measurement Accuracy: Transition Resistance: ±(5% of reading + 3 digits)
• Transition time: ±(0.1% of reading + 3 digits)
• Storage method: USB flash drive storage, internal storage
• Dimensions: 300 mm × 175 mm × 80 mm
• Weight: 2 kg
• Operating temperature: -10°C to 50°C
• Operating humidity: ≤85% RH
• Power supply: Internal battery