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Product Features
a. Dry-type 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 Optional Capacity Range for Single Unit:
1Kvar～40Kvar;
Capacity 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 Mode: △ type or Y type
Operating 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.
Information: The 4.3 Glow Discharge Extinguishing Type SF6 Leak Detector. In the air, a trace amount of electronegative SF6 gas will change the process of the ionization process and can affect the electrical insulation strength of the gas gap. Figure 4 shows some gas volume concentration curves that can cause the glow discharge to be extinguished. It can be seen from the figure that: (1) At 300V, the discharge is extinguished when the SF6 gas concentration is below a certain value. As the SF6 gas concentration increases, the extinction voltage also increases; (2) At 300V, the CCL2F3 gas concentration needs to reach a certain value for the discharge to be extinguished. Application Areas
Smart Reactive Power Compensation Capacitors provide solutions for improving the power supply power factor and enhancing the power grid efficiency.
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
9. Dehumidification capacity: 311mL/day (when humidity is greater than 50%) 10. Drainage method: Direct drainage through water pipes 11. Applicable area: 1 - 10 cubic meters 12. Access control power (optional): 0.3W 13. Power supply: DC12V 14. Smoke detector (optional): ①, Area: 12㎡. ②, Power: 0.2W. ③, Power supply: DC12V. 15. Small animal detector (optional): ①, Sensor detection distance: 13m ± 1m. The linkage fluxes of each phase are represented by "Equation 2", and the current i is represented by "Equation 3": In the above equation, KK3 is the coefficient of the fundamental wave and the third harmonic. The rotor rotates at the synchronous speed, and the following equation holds: θ = ωt - δ According to the above equations, the torque of the three-phase motor obtained by synthesizing the torques of each phase is shown in the following equation: That is, the K3 term of the torque of the three-phase motor is eliminated, and it is not affected by the third harmonic of the magnetic flux and does not contain a constant torque. On the other hand, in the case of the two-phase motor, it also becomes as shown in the following equation: According to the above equation, the torque T2 during the two-phase subdivision drive of the two-phase synthesized torque becomes the following equation: According to the above equation, the first term is a constant torque, and the second phase is a vibration torque containing ω.
Technical Parameters
The smart 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 smart 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 smart capacitors |
| Reactive power compensation device | Conventional capacitors, fuses, composite switches or mechanical contactors, thermal relays, intelligent controllers | Smart capacitors (used independently or in multiple units connected online) |
| 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 currents of each capacitor, and the internal temperature of the capacitor |
| Status monitoring 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-diagnosis 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 loss 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 phased 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 exit the system without affecting the operation of other intelligent capacitors. The system has high reliability. |
Moulded case circuit breaker BM30 - 400M/3300, Multifunctional power meter SEM9250
Multifunctional meter XH194E - 9TYCT, Overvoltage protector KSMK - 9
Single-phase ammeter PA194I - 9XY1
Circuit breaker LUGB6 - 63C25/4, Miniature circuit breaker BMN - 32L/1P+N
Double KB0S - 160A (PC) 4P, Intelligent temperature control meter SRS13A - 81N - 90 - P10000
Current transmitter FPD - 1 - A9 - PD2 - 03, Indoor live device DXN4B
Comprehensive protector eDCAP - 603A, Voltage relay ASJ - Y/2C - 1
Intelligent dehumidification device CKG - 60, Current transmitter CS30 - 1500AAC, Multifunctional power meter JEM600
Multifunctional power meter OVE300, Voltmeter PZ630 - A41
Capacitor compensation BELCR250 - P7/400, Vacuum circuit breaker SKV - 12P
Intelligent dehumidification device MDCS-C-E60, Voltmeter HB402Z-V
AC current transmitter RG3I-103, Transformer oil level temperature indicating controller XMT-22A, High voltage sensor CG5－12KV/95*145
Controller HLPFC-10, Protector XRS-202
Leakage circuit breaker LUGM6L-225/250/4, Soft starter ZYR6-160KW
Frequency meter HUA195U-5K1, Cooling fan FFDDC850-120A
Intelligent digital display controller HW-KZXS-9512SPL, Surge protector SF-80/385/4P, Current transformer AKH-0.66-30Ⅰ-200/5
Frequency converter RNB2110, Temperature controller BWD-KXF
Overvoltage protector SKB-A-17-400-J, Capacitor and reactor module KBR-GM-14B40/C
Switch HB-480W/24V, Overvoltage protector SHK-BOD-Z-127/413
Active power transmitter JS0-757.57W4-20mA 0.2 level
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