Code and implication of the Integrated Intelligent Low-Voltage Power Capacitor
Introduction to the Integrated Intelligent Low-Voltage Power Capacitor
ZHIMING brand of ZMZ-XM type intelligent integrated low-voltage filtering capacitor is designed for situations where the power grids have certain harmonic content, but the common type power capacitor is failed to run nomally.
This series of integrated intelligent power capacitors is a safe, reliable, high-efficiency, and energy-saving component, designed for installation in reactive power compensation devices. Its main functions include:
- Reducing transformer and line losses in the power supply system.
- Improving the power factor of the electrical system.
- Enhancing overall grid power quality.
As a core component of next-generation high-quality reactive power compensation equipment, it can also function as a small independent compensation device with automatic control capabilities, offering flexible and intelligent operation.
Features of the Integrated Intelligent Low-Voltage Power Capacitor
● Monitoring unit：Using intelligent controllers and sensing components, collect and calculate various data information in the power system, compensation branches and capacitors, and issue operating instructions for capacitor switching and switching.
●Temperature acquisition unit：The temperature sensor device is used to collect the internal temperature of the capacitor.
●Voltage acquisition unit：The high-precision voltage transformer is used to collect system voltage data, which provides a basis for the monitoring unit to calculate power,power factor and other parameters,and provide a basis for over/under voltage protection.
●Current acquisition unit：High-precision current transformers are used to collect system current and capacitor operating current data,to provide a basis for the monitoring unit to calculate power,power factor and other parameters,and to provide a basis for overcurrent/unbalance protection.
●Switching switch：When switching capacitors,the arc extinguishing device can reduce the strength of the arc to reduce the damage to the switch,so the mechanical life can reach millions of switching times,which extends the life of the switching switch.
●Circuit Breaker：The miniature circuit breaker is used as the over-current protection and the power inlet terminal.
●Low voltage power capacitor：The use of polypropylene base film and metallized materials and processes ensures the high quality and high reliability requirements of capacitors. And adopt over-temperature,over-pressure device and secondary protection technology to make it safer and more reliable during operation.
Technical Specifications of the Integrated Intelligent Low-Voltage Power Capacitor
Environmental conditions
● Ambient temperature: -25/B(-25~45℃);
● Relative humidity: RH≤90%,(at 40℃);
● Altitude: ≤2000M;
● Surrounding environment: no chemical corrosive gas, no conductive dust, no flammable and explosive media;
● Installation location: no severe vibration, no rain and snow erosion;
Power condition
● Rated voltage: ~220V/~380V;
● Voltage deviation: ±20%;
● Voltage waveform:sine wave,total distortion rate <5%;
● Power frequency: 47～53Hz;
● Power consumption: <0.5W
●Communication interface: RS-485,MUDBUS communication protocol, 9600bps (no parity bit)
Electrical Safety
● Electrical clearance and creepage distance, insulation strength, safety protection, short-circuit strength, sampling and control circuit protection are in line with the requirements of the corre sponding clauses in the People’s Republic of China
● Electric Power Industry Standard DL/T842-2003″Technical Conditions for the Use of Low-Voltage Shunt Capacitor Installations”.
Scope of use
● Voltage: (within 80～120%of rated voltage range);
● Current: (within the range of 20%~120%of rated current);
Reactive power compensation parameters
● Capacitor switching time interval: 1-240s;
● Reactive power capacity: up to 6/8 channels per unit, up to 30kvar; a total of supplementary points and mixing.
Reliability parameter
● Control accuracy: 100%;
● Allowed switching times: 1 million tmes;
● Attenuation rate of capacitor capacity running time: ≤1%/year;
● Capacitor capacity switching attenuation rate: ≤0.1%/10,000 times; Annual failure rate:≤0.1%.
Product Size of the Integrated Intelligent Low-Voltage Power Capacitor
Note: Other special specification models supply according to user requirements
| Maximum total capacity | Capacity allocation | Maximum loop | Dimensions | Installation size |
| 180KVAR | 20(△)×6+30(△)×2 | 8 | 500x270x470 | 310×242 |
| 180KVAR | 20(△)×4+30(△)×2+20(Y)×2 | 8 | 500x270x470 | 310×242 |
| 180KVAR | 20(△)×2+30(△)×2+20(Y)×4 | 8 | 500×270×470 | 310×242 |
| 120KVAR | 10(△)×3+20(△)×3+10(Y)+20(Y) | 8 | 500×270×470 | 310×242 |
| 120KVAR | 10(△)+20(△)+30(△)×2+10(Y)+20(Y) | 6 | 400×270×470 | 210×242 |
| 60KVAR | 5(△)+10(△)×2+20(△)+5(Y)+10(Y) | 6 | 400×270×470 | 210×242 |
| 60KVAR | 10(△)+15(△)+20(△)+15(Y) | 4 | 300x270x470 | 110×242 |
Note: The product specifications can be fully supplemented or mixed, divided and supplemented, and thecapacity can be seected from 5-30KVAR (30kvar up to two channels). According to the user’s capacity requirements, the capacity within 180KVAR can be combined arbitrarily.
