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AC Series Compensation De-icing Device General The device includes the following equipments: high voltage series
capacitors, series reactor, discharge coil, zinc oxide arrester,
grounding switch, electric display device, connect wires, post
insulators, installed framework; Its working principle: The devices is connected with line required
ice melting in series, to adjust its capacitance to match line
inductance and make the line current up to the melting of ice
required current, through power supply of interval outline at 10kV
substation, after running of certain time, the wires heat will melt
the ice build-up online on the road, to play the role of melting
ice. Main Features Simple structure, low cost; Capacitance adjustment range large , the wiring simple, flexible; Because of circuit inductance to compensate, making the ice melting
power consumption efficiency to achieve energy saving purposes; Direct power supply with a 10kV substation, the program advanced; Capacitor lying down layout, small size; Technical parameters (for example) such as: TCB8.7-26100/290 Models and the meaning of T: complete sets of equipment CB: Series Compensation 8.7: Series capacitor's rated voltage 8.7kv 26100: device rated capacity 26100kvr (three-phase ) 290: single-phase capacitor unit rated capacity for the 290kvr Rated capacity: 261000kvr Actual device capacity: according to the required subscriber
capacitance parameters, choose line wiring , when a certain
connection mode, the device's capacity is set, its value line
parameters can be calculated. Rated capacitance: 8.7 Rrated capacity: 366.1uF Actual capacitance: According to some of the wiring of the
capacitor obtained the actual capacitance. Rated capacity: 8.7Mvar Capacitor insulation level: 65/125kv Capacitor Connection: connected with transmission lines in series Wiring: 10 in parallel and 3 in series (Transmission Line Series
Capacitor Compensation Device has three phases, each with sub-
three-tier arrangement, each floor consists of 10 capacitors
units); each layer of the capacitor unit can have 7 ways of wiring. Discharge resistor: Capacitor discharge equipped with internal
resistance, disconnect from the grid, the terminal voltage can be
reduced within 10 minutes to 75 volts. Service Conditions Altitude2000m Ambient temperature type: -40 / D Installation Location: Outdoor Relative humidity (at 25C,) on day average: 95% , monthly average:
90% Earthquake intensity: 8 degree , horizontal acceleration: 0.3g,
vertical acceleration: 0.2g Assumed ice thickness: 5mm (wind speed not more than 15m / s) Nominal system voltage: 10kv System rated frequency: 50Hz The switch used in capacitor bank must be un-reusable breakdown of
vacuum circuit breakers |
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