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- brief introduction
- technical parameter
- Product size
Application
ZMZ-J 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 normally, its main characteristics as follows:?
? ? 1.High quality type low-voltage capacitor, oil-free?design, high safety;?
? ? 2.Adoption of no-surge switching switch, with advanced?technology, stable and reliable performances;?
? ? 3.Adoption of special technology and process,effectively suppress high-order harmonic and surge,has obvious efficiency in suppressing harmonic of
? ? ? ?order 3, 5, 7, 9 and above;?
? ? 4.Modular structure, flexible combination, convenient?capacity expansion, simple installation, convenient?for maintenance;?
? ? 5.Intelligent network, 485 communication interface,can switch in backstage computer, to carry out?integrated management of distribution;?
? ? 6.Adoption of decentralized control mode,? 200,000?times of fault-free switching, with high reliability;?
? ? 7.Humanized human-machine interface, simple?operation, convenient maintenance, it is convenient?for fault shooting on site;?
? ? 8.It is equipped with SH explosion-proof device and?temperature control device inside, which improves?the running reliability in severe harmonic
? ? ? ?locations;?
? ? 9.Outstanding energy-saving efficiency, it effectively?increases the power factor, reduces electric power?consumption and improves the electric? ? ?
? ? ? ?energy quality.?
ZMZ-J type intelligent integrated low-voltage filtering?capacitor is? mainly applied to locations where the?harmonic current? is 40% below (such as frequency?converter, and other equipment),? it not only meets?the requirements of reactive compensation and?improving power factor, but also eliminates influence?of high -order harmonic to the system, improves the?electricity quality.?
Product Function
Filtering
It effectively suppresses high-order harmonic and surge, forms low-resistance?channel for high-order harmonic. It absorbs and releases the harmonic, eliminates?influence of high-order harmonic to the capacitor, protects circuits and capacitors?from overload, prevents capacitors from superheating, insulating medium from?aging, avoids reduction of self healing performance, or reduction of service life.?
No-surge switching
Matched with special capacitor switching switch, no switching surge.?
Split-phase compensation?
Capacitor of each phase of separate-phase compensation type product can be?switched separately, which improves the reactive compensating accuracy, enables?the three-phase reactive unbalance to be well compensated.?
Measurement?
Measurement of distribution voltage, current, reactive power, power factor; automatic?measurement and correction of CT phase and change; measurement of three-phase?current and inside temperature of each capacitor.?
Protection?
Quick current switching and over-current protection of circuit; over-voltage and?under-voltage protection of capacitor; over-temperature, open-phase and three-phase?unbalance protection of capacitor, when the temperature of capacitor exceed 65℃,?the whole machine of capacitor would exit operation, which improves its service life,?and guarantees safety running of system.?
Signal?
Switching state, over, under and compensation state, over and under-voltage state?signals; protection operation type and self-diagnose fault type signals.?
Communication?
Adoption of RS-485 communication coupling between capacitor and controller, which?is convenient for uploading of mass of sampling data as well as information exchanging?with external monitor terminal, forms system work.?
Online
Functions of wire network communication and radio network communication.?
Intelligent network control
It is able to detect and track the reactive variation of system automatically, and?switch in capacitor bank automatically. Carry out switching circularly for capacitors?with same capacitance, and carry out switching according to the vacancy for capacitors?with different capacitance. The capacitor that is switched in earlier should exit first,that exits earlier should be switched in first; capacitor whose running temperature?is lower should be switched in first, whose running temperature is higher should?exit first; when the compensation situation is stable, the capacitors should be switched?in circularly every fifteen minutes, avoid long time running of any one capacitor.?
Self-diagnose of faults
Intelligent control element of capacitor will carry out self-diagnose to the running?parameters of the body, once there is self-inspection fault, the whole machine?responses quickly and exit running.?
Main Technical Parameters
Ambient conditions
Ambient temperature: -25～55℃;
Relative temperature: 40℃, 20～90%;?
Altitude: ≤2000m.
Power supply conditions
Rated voltage: -220V/～380V;
Voltage deviation: ±20%;
Voltage waveform: sine wave, total distortion rate?not exceed 7%;?
Rated frequency: 50Hz±5%;
Power consumption: ＜2W.?
Electrical safety?
Electrical clearance, creepage distance, insulation?strength, safety protection, short-circuit strength,?sampling and control circuit protection should all be
in conformity with the corresponding clauses of standard?DL/T842-2003 Ordering specification for low-voltage?shunt capacitor installation.?
Measurement error?
Voltage: ≤0.5% (within 80～120% of rated voltage);?
Current: ≤1% (within 5%～20% of rated current),
Power factor: ±1.5%;
Temperature: ±1℃.
Protection error
Voltage: ≤0.5%;
Current: ≤1%;?
Temperature: ±1℃.
Time: ±0.01s.
Reactive compensation parameters?
Switching interval of capacitor: ＞10s(1s~10s customized);
Reactive capacity: common compensation≤40kvar,
separate compensation≤20kvar;
Online quantity: ≤120pcs.?
Reliability
Control accuracy: 100%;?
Permissible switching times: 100,000 times;?
Attenuation rate of running time of capacitor?capacity: ≤1%/year;?
Attenuation rate of switching of capacitor?capacity: ≤0.1%/ten thousand times;?
Annual fault rate: ≤1%.
External And Installation Size
