Intelligent capacitor
Anti-harmonic intelligent capacitor OVE800R
Intelligent capacitor R type is based on △ type or Y type low-voltage power capacitor as the main body, using microelectronics
hardware and software technology, micro sensor technology, micro network technology and electrical manufacturing
technology and other latest technological achievements, to achieve intelligent low-voltage reactive power compensation
function, can easily achieve zero switching, protection, measurement, signal indication, online and other functions. It is a
major breakthrough of low voltage reactive power automatic compensation filtering technology. The product is mainly used
in harmonic cases of reactive power compensation, can operate reliably, does not produce resonance, no amplification of
harmonics, and to a certain extent has the function of absorbing and eliminating harmonics. Among them, the products
connected with 7% reactors are used in electrical environments with 5 or more main harmonics, and the products connected
with 14% reactors are used in electrical environments with 3 main harmonics.
Main function
1, anti-harmonic filtering function:
◆ Effective suppression of harmonics and inrush current, forming a low impedance path to harmonics. Prevent capacitor
overload, aging of insulating media, self-healing performance decline, and service life reduction.
◆ The electronic zero crossing switch can be accurately put in when the voltage is zero, the current is zero, and the inrush
current is small.
◆ Distribution voltage, current, reactive power, power factor measurement; CT phase and ratio automatic measurement and
correction.
◆ Measurement of internal current and internal temperature of each capacitor.
2. Signal function
Capacitor switching state, over and under state, over and under voltage state signal; Protection action type, self-diagnosis
fault type signal.
3. Communication function
◆ CAN communication connection is adopted between capacitor and controller, which is easy to upload large amount of
sampled data and monitor with peripheral devices.
◆ The terminal can exchange information to facilitate system integration.
4, online function
With a number of anti-harmonic reactive power compensator communication functions.
5. Intelligent networking
It can automatically detect and track the reactive power change of the system, and automatically switch the capacitor bank.
Capacitors with the same capacity are switched on according to the principle of cycle switching, and capacitors with different
capacities are switched on according to the principle of suitable complement. Capacitor first return, first return first investment;
The capacitor with low operating temperature is cast first, and the capacitor with high operating temperature is withdrawn
first.
6, fault self-diagnosis function
The capacitor intelligent control element can self-diagnose the operating parameters of the body. Once the self-test fault
occurs, the whole machine responds quickly and exits the operation.
Intelligent capacitor OVE800C
Conventional intelligent capacitor OVE800C is a new generation of intelligent power reactive compensation device applied to
0.4KV low voltage power grid, which is based on two groups (△ type) or a group (Y type) low voltage power capacitor as the
main body. The reactive power compensation device adopts the latest technological achievements such as microelectronic
hardware and software technology, micro sensing technology, micro network technology and electrical appliance manufacturing
technology.
OVE800C ordinary intelligent capacitor, easy to use, with zero switching, AC parameter measurement, self-protection, AD hoc
network online and other functions, can be flexibly used in various occasions of low voltage reactive power compensation,
with simple structure, convenient production, cost reduction, performance improvement, easy maintenance and many other
advantages.
Technical characteristics
1, switch switch electrical voltage resistance, strong resistance to current impact
The switchgear that runs the low-voltage power capacitor uses the electronic switchgear, and its voltage shock resistance is
greater than the AC voltage 3500V (DC voltage 5000V), the current shock resistance is more than 100 times the rated current,
and the switchgear rating is more than 1 million times. In today's complex and changeable electrical network environment,
electromagnetic zero-crossing switching equipment has excellent reliability.
2, switching switch electrical zero switching performance is excellent
The switchgear in the smart capacitor has a special electronic zero-crossing switchgear technology, and the switchgear offset
is less than 2.5° and the switchgear inrush current is less than 2.5 times the rated current, which effectively protects the
low-voltage power capacitor from inrush current impact, no cutting overvoltage, and no arc phenomenon during the
switchgear process.
3. Protection function
Smart capacitors have functions such as over current, under current, loss protection, short circuit protection, over current and
over temperature protection, which effectively ensure the safety of smart capacitors and extend the service life of equipment.
4. Intelligent networking
Intelligent capacitors use intelligent network technology to build CAN communication network to connect with each other or
external devices to meet the needs of the system.
5, high-quality low-voltage power capacitor components
Low-voltage power capacitor components using edge thickened zinc-aluminum composite coating process, has good
conductivity and stability, not easy oxidation, improve self-healing performance, low capacity attenuation, enhance the ability
to resist inrush current, working heat is small and uniform, greatly improve the capacity stability of low-voltage power
capacitor.
6. Good man-machine connection
Intelligent capacitors use digital tube display, LED lights and buttons for man-machine contact, clarity is not affected by the
environment. The digital tube display displays real-time working condition data, the concept is clear, the display value is clear,
and different LED lights indicate three states of operation fault, operation excision, and operation input respectively.
Anti-harmonic intelligent capacitor OVE800R
Electrical schematic diagram
Technical parameter
1. Environmental conditions
Ambient temperature: -45 ~ 65℃;
Relative humidity: 40℃, 20 ~ 90%;
Altitude: ≤ 2000m.
2, power supply conditions
Rated voltage: ~ 220V/ ~ 380V;
Voltage deviation: ±20%;
Voltage waveform: sine wave, the total distortion rate is not more than 5%;
Frequency: 48.5 ~ 51.5Hz;
Power consumption: <0.5W (when the capacitor is removed), <1W (when two capacitors are put into it).
3. Electrical safety
Electrical clearance and creepage distance, insulation strength, safety protection, short-circuit strength, mining
The sample and control circuit protection are in line with the power industry standard DL/ of the People's Republic of China
T842-2003 "Technical Conditions for the Use of Low-voltage shunt capacitor devices" in the corresponding provisions.
4. Measurement error
Voltage: ≤ 0.5% (80 ~ 120% rated voltage range);
Current: ≤ 1% (in the range of 5% ~ 20% rated current), ≤ 0.5% (in the range of 20% ~ 120% rated current); Temperature: ±1℃.
5, protect the error
Voltage: ≤ 0.5%;
Current: ≤ 1.0%;
Temperature: ±1℃ (capacitor); ±1℃ (reactor)
Time: ±0.01s.
6. Reactive power compensation parameters
Capacitor switching interval: >10s; (1S~10S customized)
Reactive power capacity: single unit ≤ 40Kvar, phase ≤ 30Kvar, online ≤ 24
7. Reliability parameters
Control accuracy: 100%;
Allowed number of cutting: 1 million times;
Capacitor capacity running time attenuation rate: ≤ 1%/ year;
Capacitor capacity switching attenuation rate: ≤ 0.1%/ 10,000 times;
Annual failure rate: ≤ 0.1%.
Intelligent capacitor OVE800C
Electrical schematic diagram
