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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.
Referenced 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 Capacitance Range for a Single Unit:
1Kvar～40Kvar;
Capacitance Accuracy: -5%～+10%;
Operating Voltage: Below 110% of the rated voltage
Dielectric Loss: ≤0.0025.100HZ
Withstand Voltage: Between electrodes: 2.15Un/10s
Between electrode 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.
The vacuum AC contactor, hereinafter referred to as the contactor, is mainly used in circuits with an AC frequency of 50Hz, a rated operating voltage up to 1140V, and a rated operating current up to 1000A for remotely connecting and disconnecting circuits. It can be combined with appropriate thermal overload relays or electronic protectors and other relevant protection devices to form a vacuum electromagnetic starter, which is especially suitable for forming an explosion-proof vacuum electromagnetic starter. 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
The heating system is a basic condition for the happy life of northern residents. Heating enterprises are also large energy consumers. If they can timely and completely master the indoor temperature of households, they can adjust the thermal balance, which can not only ensure that the heating temperature meets the standard, but also consume as little energy as possible and reduce costs. With a relatively low investment, the user room temperature can collect the temperatures of as many households as possible, including the end temperatures. In a parallel circuit, the magnitude of the branch current is inversely proportional to the magnitude of the branch resistance. By changing the resistance values of the two branches Ip and IR, the current distribution ratio can be changed, and the range conversion can be realized. As shown in the following figure. When the measured current I1 is input from terminal A, the resistance of the IP branch is R0, and the resistance of the IR branch is R1 + R2 + R3. When the measured current I3 is input from terminal 3 of A, the resistance of the Ip branch is R2 + R1 + R0, and the resistance of the IR branch is R3. It can be seen that when the meter head indication is the same (IP is the same), I3 > I1, and the range is expanded. Reading method The reading method of the ammeter indication is: the full-scale value (the rightmost of the scale line) is equal to the selected range gear number, and the measurement result is calculated according to the position indicated by the pointer.
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 parallel) |
| Control mode | Automatic control or manual control | Automatic control or manual control, realizing zero-crossing switching (no controller is required 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 | 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 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, realizing 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 exit the system without affecting the operation of other intelligent capacitors. The system has high reliability. |
Double LUGQ6/160/125A/4P (PC level) Motor protector TM101 - A63A
Thermal relay EWT040B/2.4 - 3.6A Intelligent control device YT - 9300
Microcomputer harmonic eliminator YTM - 9800 - 21
Controller SD - 8T Three - phase three - wire multifunctional watt - hour meter DSSD2818 - AR3×1.5(6)A
Ammeter PDM - 801A - DSC - C - 200/1A - AC220V Intelligent digital display meter XMT406
Active power meter 16D3 - W Electromagnetic lock DSN - I/Y
Voltmeter PZ1150U Ammeter BE - 48
Voltage transmitter LF - DV11 - 52A1 - 0.2 Dynamic intelligent composite switch YNTLFK - 0.4/50S - B Isolating switch ⅩKQS - 160A/3
High - voltage sensor DXN8B - 12/145A1 - M12 - M16 - Φ77 - 115pF Reactive power compensation module WZM07 - 0520
Temperature transmitter BWY-804J, Current transformer overvoltage protector CTB-6
Isolator NPEXA-GM31, Signal isolator PHG-22TZ-4141
Voltmeter CD195U-2X1, Digital display ammeter ESS802I, Single-phase ammeter BF1941-9X1
Current transmitter S3(T)-AD-1T-55A4B, Controller JKGHY
Motor protector PMC-550A-CXW385FCA, Miniature circuit breaker ACT7iB-C16/2P
Low-voltage AC contactor ZJHC1-400, Contactor YDC1-400/220V
Temperature controller XMT-22B, Molded case circuit breaker NXM-250S/4340B, Vacuum circuit breaker HVF-12KV/630A-25KA
Molded case circuit breaker HNM66-100M/3200i, Molded case circuit breaker ATM30SP-100W/3300
Load switch FYD306D160, Thermostat LD-B10-C220YFIC+BS(DC)
Contactor CJX2-3210/380V, Ammeter RSB200I-7, Single-phase AC ~400A .5 level
LCD multi-functional power meter XH194E-9S4Y/4DI2DO
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