The HCKC-2008 On-Load Tap Changer (OLTC) is the only moving component connected to a transformer's electrical circuit; consequently, the testing and inspection of OLTCs have garnered increasing attention. The *Regulations for Handover and Preventive Testing of Electric Power Equipment* mandates specific checks, such as verifying the operational sequence of the OLTC and measuring its switching time. This instrument is primarily designed to measure key parameters of transformer OLTCs, including transition waveforms, transition duration, instantaneous transition resistance values, and three-phase synchronization.

Product Features

High output current combined with a lightweight design;

Dual-range current output offers a wider testing range and enhanced stability;

Automatically calculates transition resistance values and transition duration;

Features comprehensive protection circuitry, ensuring high operational reliability;

Large 5.7-inch LCD screen facilitates easy operation in the field;

Equipped with USB flash drive storage capability, allowing for the storage of extensive data and waveforms;

Independent operation via both the keypad and a single-knob "shuttle" control ensures faster and more convenient instrument operation.

Technical Parameters

Output Current: 1.0A, 0.5A

Measurement Range: Transition Resistance: 0.5Ω–20Ω (at 1.0A), 0.5Ω–40Ω (at 0.5A)

Transition Duration: 2ms–250ms

Measurement Accuracy: Transition Resistance: ±(5% of reading + 3 digits)

Transition Duration: ±(0.1% of reading + 3 digits)

Storage Method: USB Flash Drive / Internal Storage

Dimensions: 345mm × 295mm × 175mm

Instrument Weight: 5kg