HYTBBH series high voltage collective capacitor compensation device
Product model
Model Description
Technical Parameters
product structure
HYTBBH series frame-type high-voltage reactive power compensation complete set is mainly composed of shunt capacitors, series reactors, zinc oxide arresters, discharge coils, post insulators, grounding switches, steel frames and fences. Double star wiring also includes neutral unbalanced current transformers or voltage transformers.
The fuse is connected in series with the capacitor, and when a part of the capacitor breaks down in series, the fuse operates to quickly remove the faulty capacitor from the capacitor bank, effectively preventing the expansion of the fault.
The discharge coil is connected in parallel to the capacitor circuit. When the capacitor bank is out of operation from the power supply, the residual voltage on the capacitor can drop from the peak value of the rated voltage to below 50V within 5 seconds.
Zinc oxide surge arresters are connected to the line to limit the operating overvoltage caused by switching capacitor banks
The series reactor is connected in series in the capacitor circuit to limit the high-order harmonics in the switching capacitor bank and reduce the closing inrush current. The reactance rate of the series reactor is only 0.1%~1% for limiting the inrush current, 4.5%~6% for limiting the harmonics above the 5th order, and 12%~13%a for suppressing the harmonics above the 3rd order
Refer to the drawings and attached tables for the external dimensions: the external dimensions in the attached tables are for reference only, and can be designed according to the requirements of users.
Technical Parameters
●Rated voltage of the device: rated voltage of frame type capacitor device is 6~35kV, rated voltage of collective capacitor device is 6~35kVa
●Rated capacity: frame type capacitor device capacity 300 – 50000kvar, collective type capacitor device
Capacity 600~20000kvar
●Rated frequency: 50Hz allowed
Allowable capacitance deviation: the capacitance deviation of the capacitor bank is 0~+10% of the rated capacitance of the device; between any two line terminals of the three-phase capacitor bank, the ratio of the maximum to the minimum value of the capacitance should not exceed 1.02; The ratio of the maximum to minimum capacitance of each series section of the group shall not exceed 1.02. Overload capacity: the device is allowed to operate at 1.1 Un for a long time (8 hours in every 24 hours). The device allows continuous operation at 1.31n. Protection of the device: The internal fault protection of the capacitor device can adopt a reasonable combination of internal fuses, external fuses, and relay protection according to user requirements (collective capacitor devices have no external fuses); in addition, the device should also be equipped with overvoltage, failure Voltage, overcurrent, quick break protection. Device implementation standard: GB50227 “Code for Design of Parallel Capacitor Devices”.
Other parameters
Environmental conditions
●Location of use: indoor or outdoor;
●Altitude: ≤2000m, (high altitude products can be designed according to user requirements);
●Ambient temperature: -40℃~+45℃;
●The inclination to the vertical plane does not exceed 5 degrees;
●The place of installation and operation should be free from harmful gas or steam, severe mechanical vibration, conductive or explosive dust;
Dimensions
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●When ordering, the user should provide the environmental conditions of the installation site; (indoor, outdoor).
●When ordering, the user must indicate the system voltage, capacitor device model, installation capacity, unit capacitor specification and model, capacitor bank supporting equipment and quantity, etc.
●When ordering, the user needs to provide the electrical diagram of the main circuit and the room size or layout (symmetrical layout front and rear, symmetrical layout left and right, same layout).
●When ordering, the user must specify the line-in method (cable line-in, overhead line-in) and line-in position of the device. If there are special requirements, please indicate otherwise.
