Overview
According to the power grid and load conditions of 6KV and 10KV power supply buses, TBBZ series high-voltage reactive power automatic compensation devices automatically track and compensate reactive power by controlling the capacitor bank of the system, and the power factor reaches above 0.9. Greatly optimize the power quality, save losses and reduce consumption, and improve the transmission capacity of the transmission and distribution system.
Model and meaning
For example, TBBZ10-1500(600+900)-AK indicates that the voltage is 10kV, the capacity of the device is 1500kVar, and it is automatically switched in two groups, one group is 600kVar, the other group is 900kVar, single star connection, and open delta voltage protection.
Working conditions
◇ Altitude: not higher than 1000m；
◇ Ambient temperature: -25℃ ~+55℃ ;
◇ relative humidity: no more than 85%；
◇ The medium with explosion danger is not allowed in the operating place, the surrounding medium should not contain corrosive and insulating gas and conductive medium, and it is not allowed to be filled with water vapor and have serious mold.
Product features
◇ The device can run for a long time under the steady-state overvoltage of 1.1 times the rated working voltage;
◇ The device can run continuously under overcurrent with the mean square root value not exceeding 1.3 times the rated current of the capacitor bank;
◇ The device is switched by vacuum contactor, which can be operated frequently;
◇ Each group of capacitors is equipped with a discharge coil, and the residual voltage can drop below 50V within 5 seconds;
◇ Relay protection or microcomputer protection control unit can be used for each group of capacitors to realize overcurrent, voltage imbalance, undervoltage and overvoltage protection of the system;
◇ When a group of capacitors fails, it can be cut off without affecting the use of other capacitors;
◇ Single capacitor has spray fuse protection, and each group is equipped with lightning arrester starting overvoltage and lightning overvoltage protection;
◇ Large-screen LCD controller, displaying system voltage, current and power factor in real time; With RS232/RS485 standard communication interface, and can realize "four remote" function;
◇ Each group can be configured with reactors to suppress switching inrush current or harmonic amplification.
Main technical parameters
◇ Rated voltage: 6-10kV;
◇ Rated frequency: 50Hz；
◇ Rated capacity: 100-10000kVar；
◇ Number of groups: 1-5 groups;
◇ Reactor parameter selection: suppress switching-on inrush current, and the reactance rate is 0.1-1%;
◇ Suppress more than 5 harmonics with reactance rate of 6%;
◇ Suppress more than three harmonics, and the reactance rate is 12%。
