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Product Features
a. Dry design, high reliability, and excellent self-healing performance.
b. Excellent explosion-proof performance, mechanical explosion-proof structure. When the capacitor fails, it only shows an open circuit.
c. Beautiful appearance, easy to install, frosted shell, never rusts.
d. Capacitors under the same voltage level can be combined into various capacitance values.
Reference Standards
National Standard: GB12747-2004
American Standard: UL810-1998
Standard: IEC60831-1.2-1996 (International Electrotechnical Commission Standard)
Performance Indicators
Rated Voltage: 250V, 450V
Rated Frequency: 50/60HZ;
Recommended single-unit selectable capacitance range:
1Kvar～40Kvar;
Capacitance Accuracy: -5%～+10%;
Operating Voltage: Below 110% of the rated voltage
Dielectric Loss: ≤0.0025.100HZ
Withstand Voltage: Between poles: 2.15Un/10s
Between pole and shell: 3000VAC/10s
Internal connection method: △ type or Y type
Usage Conditions
Temperature range of the working environment: -40℃～+60℃
Relative Humidity: 90%
Altitude: 2000m
Overvoltage: 1.1Un for a long time;
1.15Un for no more than 8 hours per day;
1.3Un for no more than 1 hour per day.
Although SF6 gas has relatively stable chemical properties, it will decompose under the conditions of arc and high temperature, producing sulfur-containing compounds. Moreover, these decomposition products may react with the electrodes (copper-tungsten alloy) and metal materials (aluminum, copper, etc.) inside the equipment to generate other toxic gases. Once a leakage occurs, it will pose a great threat to the personal safety of operation and maintenance personnel. Application areas
Intelligent reactive power compensation capacitors provide solutions for improving the power factor of power supply and enhancing the efficiency of the power grid.
The main application areas are:
■Residential community power distribution systems
■Municipal commercial buildings
■Traffic tunnel power distribution systems
■Box-type substations, complete cabinets, outdoor distribution boxes
Since the EKN2 gas-insulated switchgear adopts non-sulfur hexafluoride (nitrogen) insulation technology, it is not only environmentally friendly but also particularly suitable for use in harsh climates or environments such as polluted and humid areas. It can also be used in high-cold areas over 1000m. The low-voltage draw-out switchgear (hereinafter referred to as switchgear) was developed by our company, Shaanxi Fuyou Electrical Equipment Technology Development Co., Ltd., after comprehensive improvement based on the MNS series low-voltage switchgear of the Swiss ABB Company. It is currently a relatively advanced low-voltage draw-out switchgear in China. Moreover, all circuit diagrams, pneumatic and hydraulic circuit diagrams, and assembly diagrams are also in the instruction manual. How can you know what kind of modifications each component can make without reading it? According to the instruction manual, check the I/O. Checking the I/O is commonly known as "dotting". There are many methods to check the I/O, but you must check them sequentially according to the addresses provided in the instruction manual and check them in a safe situation. When checking the input points, generally the input signals are various sensors, such as capacitive, inductive, photoelectric, piezoresistive, ultrasonic, magnetic induction, and limit switch sensors. Checking these components is relatively simple. According to the component instructions, place the workpiece on the station or move the actuator to check whether the sensor has a signal.
Technical parameters
The intelligent capacitor integrates an intelligent control module, a fast switching switch, and capacitor protection. It has a delicate design structure and can be flexibly configured to meet the user's needs for reactive power compensation. The comparison between the reactive power compensation system composed of intelligent capacitors and the reactive power compensation system composed of conventional capacitor products is shown in Table 1 below.
| | Reactive power compensation system composed of conventional capacitors | Reactive power compensation system composed of intelligent capacitors |
| Reactive power compensation device | Conventional capacitors, fuses, composite switches or mechanical contactors, thermal relays, intelligent controllers | Intelligent capacitors (used independently or in multiple units in combination) |
| Control method | Automatic control or manual control | Automatic control or manual control, achieving zero-crossing switching (no need to configure a controller for automatic control) |
| Parameter measurement | Measure voltage, current, reactive power, power factor | Measure voltage, current, reactive power, power factor, three-phase current of each capacitor, and the internal temperature of the capacitor |
| Status monitoring | Capacitor switching status, over/under compensation status, over/under voltage status | Capacitor switching status, over/under compensation status, over/under voltage status, protection action type, self-diagnostic fault type |
| Protection type | Instantaneous overcurrent protection, overcurrent protection, overvoltage protection, undervoltage protection | Instantaneous overcurrent protection, overcurrent protection, overvoltage protection, undervoltage protection, capacitor over-temperature protection, phase failure protection, three-phase unbalance protection |
| Human-machine dialogue | Digital tube and buttons | Display interface and buttons, rich in information content |
| Installation and use | There are many types and large quantities of components, and the structure is complex. | The product has a simple structure, and the installation and wiring are simple and convenient. |
| System composition and expansion | The product is designed as a whole with a one-time investment. It is difficult to adjust the compensation capacity after the product is formed. | The product is modularly designed, and the compensation capacity can be easily expanded, enabling staged investment. |
| Appearance and weight | Large volume and very heavy weight | Exquisite structure and light weight. It can be directly installed in the power distribution cabinet. |
| Reliability analysis | There are many types and large quantities of components. A controller failure will cause the entire compensation system to fail. | Intelligent capacitors automatically form a system to work. If a single intelligent capacitor fails, it will automatically withdraw from the system without affecting the operation of other intelligent capacitors. The system has high reliability. |
Miniature circuit breaker SJN-63/2P High-voltage vacuum circuit breaker CZ2000S-12T/1250-25KA
Three-phase multi-functional power meter PD194E-9S9_AC380V/5A_0.5 level Temperature controller SR92-41-N-90-1400
Switch status display TA-ZSY02
Vacuum circuit breaker VBMPRO5-12/1250-25KA High-voltage disconnector GN16-10C
Multi-functional meter KRJ4Z-9X4 Multi-functional power meter ACR320E
Temperature and humidity controller WSK-HJB(TH) High-voltage fuse HYD3-40.5/0.5-50
Electrical fire monitoring detector DH-A-225 High-voltage current transformer BGW-LZZBJ9-12/150b
Capacitor NABKMJ0.45-30-3 Microcomputer integrated protector WCP-114 Multi-functional power meter SC6120T-3-U1I1PDTC3
Capacitor and reactor compensation module SRZHLF-280/20-7 Digital display voltmeter MB4101
Microcomputer harmonic elimination device HR—WXX Switchgear intelligent control device KZ-5802
Single-phase combined transmitter PD150UIF-9D1 Thyristor switch TSC-85F
Intelligent dehumidification device KW-CS830 Indoor high-voltage live display device indicator DXN8B-7.2-40.5/Q3 Thermal relay JRS4-50357d
High-voltage live display CVD3-1L Reactor TRSF-30/P7
Temperature and humidity controller YZK220W-01/WS Control and protection switch NKB1-45C/M3/06MG0.25KW
Multifunctional power meter EM600LED-I-NC Current transmitter 5AAC-4-20MADC
Motor protection controller ST570L3-PV+25+LZT60-5A Multi-user intelligent meter PD866EZ-12S Control and protection switch KBO-12C/M1/06M
Miniature circuit breaker HUH18-63/1P Molded case circuit breaker HNM66-100M/3200i
High-voltage live display GSNBⅡ-10/ZC1-MD Controller SH-JKW-24J
Control and protection switch KBO-12C/R12L/06M-30mA Current transmitter NR0414F
Switch status intelligent display SHK-ZXK-3
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