Đồng hồ đo nhiệt độ máy biến áp lực, BWR-04C (TH) Máy đo nhiệt độ cuộn dây biến áp hiển thị kỹ thuật số từ xa

1. Use

Transformer winding thermometer (hereinafter referred to as thermometer) is a special instrument used to measure the winding temperature of large power transformers. It is based on the pressure thermometer, after the converter is improved, it is installed in the host table, and it is equipped with an xmz digital temperature display instrument.

2. Working principle

   BWR-04C (TH) transformer winding thermometer is specially designed for measuring the winding temperature of large power transformers. It can indirectly measure the transformer winding temperature. The transformer winding thermometer is equipped with synchronous sliding resistance and transmitter, and is equipped with secondary remote transmission data. The display instrument can monitor the temperature rise of the transformer from a long distance. BWR-04 (TH) transformer winding thermometer has synchronous sliding resistance and transmitter, and is equipped with secondary instrument (with regulated power supply), which can output 4-20mA standard current signal, input into computer, and realize computerized management. After the converter is improved, it is installed in the main unit to realize the integration of the instrument, which simplifies the installation procedure and improves the reliability of the instrument operation. ) control, alarm signal and accident tripping.

3. Main technical parameters:

  1. Working conditions: ambient temperature -40-55℃, relative humidity <95%.

  2. The thermometer can work normally under the vibration condition of frequency of 50-120Hz and amplitude of 0.2mm (vertical direction).

  3. Protection performance: The waterproof and dustproof performance of the thermometer meets the requirements of IP55 in GB4208-84. At the same time, it achieves the moisture resistance of general-purpose tropical electrical products and the mildew resistance of exposed parts in the JB839-74 standard.

  4. Temperature measurement range: 0-150℃.

  5. Accuracy level: 2.0

  6. Contact action error: ±4°C, switching difference: 6±2°C

  7. The size of the temperature bulb is Φ14×120mm, and the installation thread is M27×2

  8. The setting value of the temperature control switch can be adjusted within the range of 0-150°C. There are 4 switches in it, and the on-off capability of the switches conforms to the provisions of Table 2.