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

KDKC-C Transformer On-load Tap-changer Tester 

Applications:

Designed specifically for testing on-load tap changers (OLTCs) of power transformers in substations, power plants, and transformer manufacturers. Ideal for routine maintenance, commissioning, and troubleshooting, it measures switching waveforms, switching times, switching resistance, and three-phase synchronism. It enables technicians to assess the contact performance and mechanical condition of the tap changer, ensuring reliable voltage regulation and preventing costly power system failures.

  • Response within
    24 hours

  • Free warranty
    12 month

  • On-line training
    Support

Profile:

KDKC-C is a professional OLTC tester with multiple output current ranges for comprehensive switching analysis. It features a large 7-inch LCD display and intelligent protection circuitry, capturing switching waveforms at a 20kHz sampling rate and automatically adjusting the display scale. Supporting Yn, Y, and Δ transformer connections, it directly displays resistance without conversion, accurately measures switching parameters, and has built-in storage for 500 test records.

Features:

1. High output current (2.0A/1.0A/0.5A/0.2A), lightweight and portable, easy to use in the field;
2. Directly displays resistance values ​​(no conversion required) for testing Yn, Y, and Δ type transformers;
3. Supports both winding and unwinding measurement modes;
4. Waveform display automatically adjusts resistance and time amplitude based on sampled values;
5. Comprehensive protection circuitry enhances reliability and safety;
6. Large 7-inch LCD screen for easy field operation;
7. Built-in high-capacity lithium battery (optional), allowing for field use without an external power supply;
8. Internal automatic storage of 500 sets of test data.

Parameter:

Output current: 2.0A, 1.0A, 0.5A, 0.2A
 
Measuring range
Transition resistance: 0.3Ω ~ 5Ω(2.0A); 1Ω ~ 20Ω(1.0A); 5Ω ~ 400Ω(0.5A); 20Ω ~ 100Ω(0.2A)
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: Host: 360*290*170 (mm) Cable box: 360*290*170 (mm)
Instrument weight: main machine 6KG cable box 4.5KG
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