The BYKC-2000 transformer on load switch tester is a comprehensive measuring instrument used to measure and analyze the electrical performance indicators of power transformers and special transformer on load tap changers in power systems. It adopts computer control and can measure the transition time, transition waveform, transition resistance, three-phase synchronicity, and other parameters of the on load tap changer through a specially designed measurement circuit. Users can directly measure them through the tap changer leads according to their needs and site conditions, or directly connect them through the transformer three-phase bushing and neutral point for measurement.
This instrument has functions such as analyzing, storing, and printing the measured data. Solved the problem of outdated measurement methods and lack of specialized testing methods for on load tap changers in current power transformers. It can timely diagnose potential faults in on load tap changers during preventive testing of power equipment and transformer maintenance, which is of great significance for improving the reliability of power system operation.

Functions and characteristics of BYKC-2000 transformer on load switch tester
Strong comprehensive measurement ability. It is possible to measure various numbers of on load tap changers in one instrument. Whether there are breakpoints, transition waveforms, transition times, transition resistances, three-phase synchronicity, etc. during the entire process of switch selection and switching.
Comprehensive analysis of measurement results. Users can analyze the resistance values and time of each point and segment in the waveform, as well as the time of each time segment and different phases of the three-phase through the large screen LCD display screen and various functional buttons. Through screen analysis, users can understand the changes in various parameters of the three-phase switch at each moment during the switching process, and can also print, store, and view historical waveforms for analysis and comparison.
Print output. The instrument is equipped with a panel type front paper exchange printer, which can be directly used as a test report archive for switches.
Menu driven, flexible operation. All operational functions, prompts, and measurement results are displayed on a large 240 × 128 point LCD screen. Users only need to press the function keys according to the prompts to perform measurements.
The instrument is equipped with anti impact and overvoltage protection circuits. All external leads of the instrument are sent to the measurement circuit through a protection system, which can prevent damage to the instrument due to instantaneous discharge or wiring errors caused by large inductance.
Has good anti-interference performance. The all aluminum alloy chassis and instrument are equipped with power noise filters and anti-interference circuits, which can reliably measure on site in areas with poor power quality and strong electromagnetic field interference.
Power outage data retention. The data and waveforms measured by the user can be stored separately in the instrument, and the stored content will not be lost due to power failure. It is particularly suitable for bringing back the laboratory for analysis and archiving after on-site testing is completed. This instrument can store up to 16 sets of switching waveforms.

Main technical specifications of BYKC-2000 transformer on load switch tester
1. Three independent test power supplies, with a maximum output power of 0.5A;
2. Set the sampling rate of the instrument to 10~20KHZ;
3. The maximum storage time for a single waveform is 6.4 seconds.
4. Transition resistance measurement range: Y/O transformer ≤ 40 Ω, Y transformer ≤ 20 Ω.
5. Measurement accuracy: △ ≤ 10%
6. Measurement synchronicity error: 0.2ms.
7. Display: 240 × 128T, T6963 controller;
8. Printer: MP-40-8 Panel Type Front Swap Printer;
9. Processing part: 80C320 high-speed 8-bit microprocessor; Program memory 32K;
Maintain 512K bytes of data storage during power failure;
High speed A/D converter with a maximum sampling rate of 400KHZ;
10. Power supply 220V ± 10% power ≤ 200W.
11. Size 410 * 320 * 200mm
12. Weight 7kg

Precautions for safe operation
1. Before using the instrument, be sure to carefully read this manual;
2. The operator of the instrument should have general knowledge of using electrical equipment or instruments;
3. This instrument can work normally within the range of ambient temperature -5 ℃~40 ℃ and relative humidity ≤ 80%. However, when used outdoors, it should be avoided from being exposed to rain or direct sunlight on the LCD screen;
4. There is a protective grounding wire on the power socket. Please insert the plug into the three eye socket with grounding wire.
5. The instrument outputs a maximum voltage of 24V. During on-site testing, connect all leads first and then turn on the instrument power;
When changing the wire clamp of the instrument, the power must be turned off. The instrument can be measured with a coil, but live measurement is strictly prohibited;
7. Two or more sets of wires cannot be connected together as one measurement, and unused wires must be open circuited;
After the test is completed, turn off the instrument first and then remove all wiring.

BYKC-2000 Transformer Load Switch Tester