Transformer on load tap changer tester

Product actual shot

Product Introduction

The on load tap changer is a moving component connected to the transformer circuit, so the detection of on load tap changers is becoming increasingly important. In the "Regulations for Handover and Preventive Testing of Power Equipment", it is required to check the sequence of action of on load tap changers, measure switching time, etc. thisTransformer on load tap changer testerIt is mainly used to measure the transition waveform, transition time, instantaneous transition resistance values, three-phase synchronicity, etc. of on load tap changers in transformers.

Transformer on load tap changer testerHighly intelligent, with all Chinese menu prompts and simple operation. The instrument has a small size, light weight, and strong anti-interference ability, greatly reducing the labor intensity of on-site workers. It is an ideal instrument for power generation and supply units, transformer manufacturing industry to ensure safety production and improve product quality.

Panel Introduction

1. Power switch: The whole machine has a power input port, an AC socket, a fuse compartment, and a switch.
2. USB interface: for external USB drives.
3. 232 serial port: used for serial communication and device upgrades.
4. Grounding post: used for grounding the entire machine casing.
5. Current output terminals: Ia, Ib, Ic, Io correspond to transformer A, B, C, N respectively.
6. Voltage input terminals: Ua, Ub, Uc, Uo correspond to transformer A, B, C, N respectively.
7. Display: 320 × 240 dot matrix LCD display.
8. Printer: Thermal printer, print test results.
9. Button: Used for operating the device. Reset button: Reset the entire device to its powered on state; ↑↓ "keys: move cursor or modify data (select ruler in waveform analysis menu); ←→ "key: select move (move the ruler in the waveform analysis menu); Confirm "button: Confirm the current operation; Cancel button: Discard the current operation.

Performance characteristics

1. The instrument has a high output current and is lightweight.
2. The instrument outputs an open circuit voltage of 28V and can test a transition resistance of 10 Ω at a current level of 1A. It also has 0.5A, 0.3A, and 0.1A levels for testing larger transition resistances.
3. Equipped with * protection circuit and strong reliability.
4. Vertical chassis structure, 5.7-inch large LCD display, convenient for on-site operation.
5. Equipped with USB storage function, it can store more data waveforms.

technical indicators

1. Output current: available in four levels: 1.0A, 0.5A, 0.3A, and 0.1A.
2. Resistance range: 1.0A range 0.1-10 Ω; 0.5A range 5-20 Ω; 0.3A range of 10-40 Ω; 0.1A range of 40-100 Ω.
3. Resistance measurement accuracy: ± (reading x 5%+5 words), resolution: 0.01 Ω.
4. Transition time measurement range: 1-250mS.
5. Transition time measurement accuracy: ± 1mS, resolution: 0.1mS.
6. Sampling frequency: 10K.
7. Storage methods: USB storage, local storage.
8. Working temperature: -20 ℃ to+50 ℃.
9. Environmental humidity: ≤ 90% RH, no condensation.
10. Working power supply: AC220V ± 10%, 50Hz ± 10%.

safety measures

1. Before using this instrument, be sure to read this manual carefully.
2. The operator of the instrument should have general knowledge of using electrical equipment or instruments.
3. This instrument can be used both indoors and outdoors, but should be kept away from places such as rain, corrosive gases, excessive dust, high temperatures, and direct sunlight.
4. The instrument should avoid severe vibration.
5. The maintenance, care, and adjustment of instruments should be carried out by professionals.
6. During the testing process, it is prohibited to move the test clamp and power supply line.

Within 12 months from the date of purchase of the instrument, any quality issues related to the company's products will be repaired free of charge, and lifetime warranty and technical services will be provided.

All products of Guohao Electric have achieved planned inventory, with a large quantity of regular specifications in stock.
Guohao Electric provides one-year warranty and lifetime service for the products sold.
Guohao Electric values every customer and provides the necessary information and quotation within ten minutes.