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KDKC-A Transformer On-load Tap-changer Tester
KDKC-A Transformer On-load Tap-changer Tester

KDKC-A Transformer On-load Tap-changer Tester

Applications:

Designed for testing on-load tap-changers (OLTC) of power transformers in substations, power plants, and transformer manufacturing facilities. Ideal for routine maintenance, commissioning, and troubleshooting to measure transition waveforms, transition time, transition resistance, and three-phase synchronization. Enables technicians to evaluate contact performance and mechanical condition of tap-changers, ensuring reliable voltage regulation and preventing costly failures in power systems.

  • Response within
    24 hours

  • Free warranty
    12 month

  • On-line training
    Support

Profile:

KDKC-A is a specialized OLTC tester featuring multiple output current ranges for comprehensive transition analysis. With 7-inch large LCD display and intelligent protection circuitry, it captures transition waveforms at 20kHz sampling rate and automatically adjusts display scaling. Supporting Yn, Y, and Δ transformer connections with direct resistance display without conversion, it provides accurate measurement of transition parameters with internal storage for 500 test records.

Features:

1. Large output current (1.0A/0.5A) with lightweight design for field portability;
2. Tests Yn, Y, Δ type transformers with direct resistance display (no conversion required);
3. Supports both with-winding and without-winding measurement modes;
4. Waveform display automatically adjusts resistance and time amplitude based on sampled values;
5. Comprehensive protection circuitry for enhanced reliability and safety;
6. 7-inch large LCD display for convenient on-site operation;
7. Internal automatic storage for 500 sets of test data.

Parameter:

Output current: 1.0A, 0.5A
 
Measuring range
Transition resistance: 0.3Ω ~ 20Ω(1.0A); 5Ω ~ 40Ω(0.5A)
Transition time: 0 ~ 320ms
Open circuit voltage: 24V
 
Measurement accuracy
Transition resistance: ±(5% reading ±0.1Ω)
Transition time: ±(0.1% reading ±0.2ms)
Sampling rate: 20kHz
Storage mode: local storage
Dimensions: Main 360*290*170 (mm) cable bag 360*230*290 (mm)
Instrument weight: main machine 6.15KG
Test line length: Standard 13m length can be customized
 
Conditions of use
Ambient temperature: -10℃ ~ 50℃
Ambient humidity: ≤85%RH
Working power supply: AC220V±10%
Power frequency: 50±1Hz