Generally, the rated current of the motor stator is 10.59kA, and the rated voltage of the stator is 15.75kv. The outgoing line is directly connected with the main transformer by the fully connected isolated phase bus. Generally, the temperature measurement system of generator station unit enclosed bus consists of 6 in-situ control boxes and can monitor the temperature of enclosed bus shell and conductor, including generator neutral point enclosed bus, generator outlet enclosed bus, enclosed buses at both sides of generator circuit breaker, enclosed bus at Pt section of generator outlet, enclosed buses between generator-transformer units and enclosed bus at low voltage side of main transformer. There are 54 measuring points in total, 27 of which monitor the temperature of enclosed bus conductor through infrared temperature measurement, display it on the digital display screen of in-situ control cabinet and send it to the monitoring system. Other 27 measuring points monitor the temperature of enclosed bus shell by Pt100 thermal resistance and only display it on the digital display screen of in-situ control cabinet. (As the unit sizes are different, the temperature measuring points of the enclosed bus are different accordingly.)
The chip-type temperature sensing element adopts laser welding technology to prevent the solder joints from loosening or falling off in case of strong vibration, which effectively improves the stability of measurement.
With a simple structure, it has good long-term stability and responses quickly when the end face of the sensor is close to the surface of the measured object.
It is especially suitable for installation and use in a narrow space or special occasions, and its volume is very small.
Oil and high temperature resistant shielded conductor, jacket and insulating layer are made of special polymers, which can work in the oil temperature of 100℃ for eight years.
The copper-plated silver core has good conductivity, and the equilibrium degree of each hundred meters is less than 0.05Ω.
The corrugated pipe protective device can effectively bear the load of the joint of rigid material and flexible material and prevent the conductor from breaking when the tail conductor swings frequently.