GGJ low voltage reactive power compensation device
GGJ low-voltage reactive power compensation device is a new type of outdoor power distribution reactive compensation integrated cabinet designed in accordance with the principles of safety, economy, reasonableness and reliability. Applicable to urban network, rural network transformation, industrial and mining enterprises, street lighting, residential area, etc. AC 50Hz. Rated voltage 380V power distribution system, with power distribution, control, protection, reactive power compensation, energy metering and other multi-functional new outdoor Integrated distribution box. At the same time, it can add leakage protection function according to user requirements. The product has a novel and reasonable structure. High degree of protection. Advantages of installation, commissioning, maintenance and maintenance. The product conforms to GB72511-1997GB/155762008 and has passed the 3C certification. It is an ideal low-voltage complete set in the current power grid transformation.
GGJ low-voltage reactive power compensation device is suitable for electric energy distribution, metering, protection and automatic compensation of reactive power at 04kV voltage level.
The GGJ low-voltage reactive power compensation device is composed of a cabinet, an isolating switch, a fuse, a switched capacitor contactor, a thermal overload relay, a power capacitor and an intelligent reactive power compensation controller.
■Response promptly and quickly. The compensation effect is good. The work can be reliable and the leakage protector can be added according to the user's needs.
■ Protection function: overvoltage, overload, undervoltage, undercurrent, short circuit and other functions.
■Operation mode: It has two working modes: automatic operation and manual operation.
■ can increase the power factor of the grid to more than 0.95.
■ Ambient temperature: -20 ° C ~ +50 ° CC
■Air relative humidity: ≤90% (relative to ambient temperature is 20c~25C
■ Altitude: no more than 2500m
■Environmental conditions apply to the inside of the plug (in the box) installation is not suitable for places with fire, explosion hazard, serious pollution, chemical corrosion and severe vibration
■Installation position: the inclination perpendicular to the ground does not exceed 5°
■Rated frequency: 50Hz
■Compensation method: combination of three-phase compensation and single-phase compensation
■ Replenishment capacity: 420kvar60kvar
■Compensation method: cycle switching. Code switching. Fuzzy control automatic switching
■ Control physical quantity: reactive power or reactive current
■ Fastest response time: ≤20ms
Installation and commissioning
1, check before installation
Check whether the equipment is intact. Random information and accessories are complete. If you find any problems, you should contact the manufacturer in time.
2. Inspection and experiment before power-on
After the product is installed, the following items should be inspected and tested before being put into operation.
■ Check if the cabinet is dry and clean.
■The operating mechanism of electrical components is flexible. There should be no jamming or excessive operating force.
■ Whether the continuity of the main electrical components is reliable and accurate. Whether the auxiliary contacts are reliable or accurate.
■ Whether the meter indicator and the transformer's ratio and polarity are correct.
■Whether the busbar connection is good. Is the insulation support, mounting parts and accessories firm and reliable?
■ Use a 500 volt megger to measure the insulation resistance not less than 10 megohms. Disconnect electronic devices, capacitors, and current-consuming devices such as coils.
3. Power-on debugging
Commissioning of reactive power automatic compensation controller.
When the controller is shipped from the factory, the threshold is removed, the delay time, and the overvoltage threshold. It has been adjusted according to the relevant standards: if it needs to be re-tuned, please adjust according to the instructions of the reactive power automatic compensation controller.