How to measure temperature in high-voltage switchgear

The best temperature measurement method for high-voltage switchgear is fiber optic temperature measurement

1. Fluorescent fiber optic temperature measurement for switchgear

The fluorescent fiber optic temperature measurement system for switchgear can be applied to high-voltage switchgear to measure the temperature of hot spots such as contacts, busbars, and cable joints that are prone to temperature rise through contact type temperature sensing probes. The fiber optic itself is resistant to high voltage, insulation, interference, has a long service life, and is stable and accurate in temperature measurement. A fiber optic temperature measurement host can connect multiple fiber optic sensors to monitor and display temperature for multiple hotspots simultaneously. Provide installation guidance solutions for fiber optic temperature measurement systems.

2. Fiber optic grating temperature measurement for switchgear

Fiber optic grating temperature sensors and optical splitter boxes are used to collect data from measurement points and transmit optical paths. Real time temperature detection was conducted on 10 switchgear cabinets, including 10kV main incoming, connecting bridges, and important branch circuits, in a certain substation. Each switchgear cabinet was tested for the static contacts on the busbar side of the circuit breaker, the static contacts on the line side, and the three-phase temperature of the cable connection bar, at approximately 9 points. Sensors were installed on the tested nodes, and the optical branch box was installed on the switchgear panel.

3. Wireless temperature measurement device for switchgear

An intelligent device for high, medium, and low voltage power systems (110KV, 6-35KV, and 0.4KV) and electrical systems with high temperature requirements. It is a modern high-tech product that integrates online temperature measurement, data collection, data analysis, and control functions. Its various technical indicators can meet international standards, and the main function of the electrical contact temperature measurement device is to collect contact temperature online (the number of contacts can be selected). This device provides an RS485 communication interface, which is convenient for networking applications and can be used in conjunction with on-site computer monitoring systems.

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