Overview
The GGJ series low-voltage reactive power compensation cabinet is used for reactive power compensation in low-voltage power grids to improve power factor, reduce line losses, and improve power quality. This series of low-voltage reactive power compensation cabinets is based on intelligent reactive power and adopt capacitive contactors as switching devices of capacitor banks. The capacitors are automatically switches capacitors according to the power factor of the power and grid, ensuring that the power and grid all the time have a high power factor.The GG type low-voltage reactive power compensation cabinet have a compensation element that is a capacitor, which can use in situations with low harmonics. The compensation element of the GGJD type low-voltage reactive power compensation cabinet does not have the same head capacitor, but can be switched according to the load characteristics of each phase. The compensation element of the GGJL type low-voltage reactive power compensation cabinet is composed of capacitors and reactors connected in series, which has harmonic suppression function and can be used in situations with high harmonics.
Structure characteristics
1. The main components inside the compensation cabinet include capacitors, reactors (GGJL type), knife fuse switches, fuses, contactors, controllers, etc; The GGJL type reactive power compensation cabinet can be used according to the requirements.
The user requires modular design, which integrates capacitors, reactors, fuses, and contactors in one module, with a compact structure and innovative layout.
2. The cabinet panel is equipped with a power factor meter, ammeter, voltmeter, conversion switch, etc., which facilitates real-time observation and manual/automatic switching by users; The top of the cabinet is equipped with a fan for heat dissipation (which can
Optional, controlled by a temperature control switch, with a manual/automatic switch on the panel to control the fan.
3. The cabinet body is made of high-quality cold-rolled steel plate with good flatness, and the outer surface is sprayed with plastic, which has strong anti-corrosion ability; The internal framework is made of galvanized steel plate, aluminum zinc steel plate, ensuring good conductivity and corrosion resistance.
4. Complete protection functions: with short-circuit, overload, overvoltage, undervoltage, and short-circuit protection; Convenient setting of various parameters; When there is an external related fault, it will automatically exit the operation and resume operation after power supply.
Main technical parameters
1. Rated voltage: 220V, 380V, 660V, 1000V
2. Rated frequency: 50Hz
3. Rated compensation capacity: 30-1000kvar
4. Operating voltage range: 0.8~1.1Un
5. Capacitor wiring method: "△" or "Y".
6. Measurement error: Voltage: ± 0.5% Current: ± 1.0% Reactive power: ± 1.0%.
7. Switching mode: automatic cycle switching, split phase switching (WZJD type)
8. Switching delay: adjustable from 0 to 999 seconds.
9. Maximum allowable overcurrent: 1.30 times the frequency fixed current.
10. Number of control routes: 1-12 or 1-16
11. Power factor: lagging 0.001- leading 0.001 (accuracy level 0.5)
12. The selection of reactance rates for reactors is 6%, 7%, 12%, and 13%, depending on the harmonic conditions of the power grid or user requirements.
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