Product Overview
The GGJ low-voltage intelligent reactive power compensation device adopts computer-aided design (CAD) and introduces microcomputer control to perform intelligent tracking compensation of reactive power. With a rational structure and well-developed technology, it is widely used in low-voltage networks to improve the power factor, reduce reactive losses and improve supply quality; it is a new type of energy-saving product. It is dedicated to reactive power compensation for 130-600 kVA three-phase transformers. The GGJ low-voltage intelligent reactive power compensation device adopts a modular structure design and is widely used in the reactive power compensation retrofit of low-voltage networks.
Type Designation
Service Conditions
- Altitude: ≤2000 m;
- Ambient temperature: -20 ℃ to +45 ℃;
- Relative humidity: ≤90% at 20 ℃;
- Installation environment: free from harmful gases and vapours, conductive or explosive dust and serious mould.
Structural Features
- Controlled by an intelligent controller with complete functions and reliable performance; the compensation mode is automatic and can raise the power factor to above 0.9:
- Real-time display of the network power factor, display range: lagging (0.00-0.99), leading (0.00-0.99):
- Comprehensive protection functions including overvoltage, excessive harmonics, over-compensation, system fault, phase loss and overload;
- The set parameters are memorised and will not be lost after a system power failure; when the network returns to normal the device automatically enters the operating state, with no need for attendance:
- According to the load balance of the network, phase-split compensation or mixed compensation can be adopted;
- Strong anti-interference capability: it can withstand interference pulses of 2000 V amplitude directly input from the network, higher than the national professional standard.
Main Technical Parameters
- Rated voltage: 0.38-0.66 kV;
- Rated frequency: 50 Hz;
- Rated capacity: 1-600 kvar;
- Applicable voltage range: (0.85-1.1) times the rated voltage;
- Max. permissible current: 1.3 times the rated current;
- Control circuits: 1-16 circuits;
- Switching time: 1-150 s per operation, adjustable;
- Operating mode: automatic, continuous operation.
System Principle Examples
Ordering Information
- Main circuit scheme diagram;
- Compensation capacity and compensation mode;
- Any conditions not conforming to the normal service conditions of the product shall be stated in advance.
Distribution Network Monitoring Functions
Real-time measurement and hourly recording of the three-phase voltage, current, frequency, active power, reactive power, power factor, active energy and reactive energy on the low-voltage side of the transformer, as well as the total voltage and current distortion rate and the 2nd to 25th harmonic content;
With RS-232 and RS-485 interfaces, data can be read by a handheld computer, and remote communication enables wireless meter reading, device testing, parameter setting and reading of real-time measured and recorded data;
Data analysis function: it can analyse, process and statistically query the operating load data; comprehensively analyse the supply quality and calculate the voltage qualification rate, supply load rate, reliability rate and maximum load rate; query the power factor, active power and reactive power by time period; plot curves of the voltage, current and power factor of each phase; and print comprehensive analysis and statistical reports. The GGJ low-voltage intelligent reactive power compensation device is equipped with RS-232 and RS-485 communication interfaces supporting wireless meter reading and remote parameter setting.
Outline & Installation Dimensions
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