Technical parameters for using fluorescent fiber optic temperature sensors in 10kV transformer fiber optic temperature controllers

The FJINNO fiber optic temperature controller meets the following conditions:

1. The 10kV transformer temperature controller adopts a fluorescent fiber optic temperature sensor, which should be installed on the inner side of the low-voltage coil, close to the iron core. The diameter of the probe should not exceed 3mm, and the temperature sensor should be inserted 10 centimeters into the coil. The temperature measurement range meets -30~150 ℃, the temperature measurement accuracy meets+1 ℃ (full range+1%), and the display resolution meets 0.1 ℃. The temperature sensor needs to undergo power frequency withstand voltage, short-term current, partial discharge and other tests together with the transformer body.

2. The static contacts or connection points of the circuit breaker must be equipped with fluorescent fiber optic temperature measurement, with no less than 6 channels. The roots of the upper and lower static contacts of each switchgear circuit breaker or the connection points of the busbar and cable should be set separately. The probe should use fluorescent fiber optic probes, and the diameter of the probe should not exceed 3mm.

3. The fluorescent fiber optic temperature sensor is a full dielectric material that is not affected by EMI interference. The diameter of the probe is not more than 3mm, and the temperature measurement error is not more than 1 ℃ (full range: ± 1%). The power frequency withstand voltage is not less than 120kV. The temperature sensor needs to undergo power frequency withstand voltage, short-term current, partial discharge and other tests together with the switchgear equipment.

4. The switchgear needs to be equipped with an arc protection system, which can output a trip signal within 7ms during fault protection. The circuit breaker and busbar compartment achieve precise protection, reducing the impact range in case of faults.

5. The main incoming cabinet needs to be equipped with an electric energy quality recorder, which can continuously record electric energy parameters for no less than 90 days, including frequency error, voltage (error, sudden drop, interruption, imbalance, overvoltage, rapid change, flicker intensity), 2-63 harmonic values, and harmonic voltage distortion rate. The measurement accuracy is 0.2S level, equipped with a communication interface, and can playback recorded data and trend waveforms.

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