When the LBQC explosion-proof electromagnetic starter reaches the rated number of revolutions, the start-up process ends. The soft starter automatically replaces the completed thyristor with the bypass contactor to provide the rated voltage for the normal operation of the motor to reduce the heat loss of the thyristor and extend the softness. The life of the starter increases the efficiency of its work, and the grid is protected from harmonic pollution.
The starter is connected in series between the power source and the controlled motor, and the internal thyristor is triggered to conduct the AC voltage regulation by the microcomputer, so that the input voltage of the motor gradually rises from zero with a preset function relationship until the end of the start, and the motor is given to the motor. At full voltage, during the starting process, the starting torque of the motor is gradually increased, and the rotational speed is gradually increased until the thyristor is fully turned on, and the motor operates on the mechanical characteristics of the rated voltage to achieve a smooth start and reduce the starting current. Avoid starting the overcurrent trip. When the motor reaches the rated number of revolutions, the starting process ends and the rated voltage is provided for the normal operation of the motor.
When using the LBQC explosion-proof electromagnetic starter , the following parameters can be used before being measured.
Voltage measurement: The voltage on the input side of the inverter is the sine wave voltage of the network. It can be measured by any type of meter: the voltage on the output side is a square wave pulse sequence, and it also contains many high-order harmonic components. Since the torque of the motor is mainly related to the fundamental wave of the voltage, it is preferable to use a rectifying type meter.
Waveform measurement: When using an oscilloscope to measure the main circuit voltage and current waveforms, a high voltage probe must be used. If a low voltage probe is used, it needs to be isolated with a transformer or other isolator.
When measuring insulation, the connection to the power supply and the motor should be disconnected first, then all the input and output terminals should be connected, and the insulation resistance should be measured with a megohmmeter.
Current measurement: The input and output currents of the inverter contain various high-order harmonic components. The electromagnetic meter should be used because the current indicated by the electromagnetic meter is an effective value.
Rubber Mixer Liners
Rubber Mixer Liners
Odorless, non-toxic, has excellent
resistance to low temperature performance (minimum temperature can reach
-70 ~ -100 C) ,good chemical stability, erosion resistance to most
acid-base (not resistant to oxidizing acid), insoluble in a normal
temperature Solvents, small water absorption,
excellent insulation performance; Low density; Good toughness (also
applicable to low temperature conditions);
Good tensile, good dielectric and
electrical insulation, low water absorption, low water vapor
permeability, good chemical stability, tensile property, non-toxic and
harmless.
But PE plates are sensitive to environmental stresses (chemical and mechanical effects), and have poor heat resistance.
Hebei Tongye Metallurgical Science And Technology Co.,Ltd(Former Hebei
Province Gucheng County Tongye High wear-risisting material Factory) was
founded in 1998 which there are 380 workers and 98 engineering
technician in. It's the only one manufacturer in China that produces
high wear-risisting material nylon series products.Our production and
market share of wear-resisting materials accounted for 70% of the
metallurgical industry in China ,is the highest in the domestic
industry.
Rubber Mixer Liners,Rubber Blind Plate,Ball Mill Liner Plate,Impact Resistant Rubber Mixer Liners
Hebei Tongye Metallurgy Technology Co., Ltd. , https://www.hbtyyejin.com