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TGRB high-voltage step-down soft start device

A soft-start, high-voltage technology, applied in harmonic reduction devices, motor generators/starters, reactive power compensation, etc., can solve the problems of excessive starting current, reduced starting capacity, affecting the operation of other equipment, etc., to achieve the starting capacity Reduce, lighten the burden, good practical effect

Inactive Publication Date: 2018-03-06
XIANGFAN TENGHUI ELECTRICAL MFG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention has the following advantages and effects: through the technical scheme, since a compensation cabinet is added between the high-voltage switch cabinet and the autotransformer cabinet, and the overall combination is scientific and reasonable, the overall starting device formed can switch the starting power of the motor to the capacity of the capacitor , so that the starting capacity can be greatly reduced, thereby reducing the burden on the power grid, thus solving the problem of excessive starting current of relatively large motors and affecting the operation of other equipment. The design is scientific and simple, easy to install and use, and the practical effect is good.

Method used

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  • TGRB high-voltage step-down soft start device
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Embodiment Construction

[0010] figure 1 Shown: High-voltage switchgear 1 is connected to motor 3 with wires, and high-voltage switchgear 1 is provided with another wire to connect to autotransformer cabinet 2 and then to motor 3; at the same time, autotransformer cabinet 2 is provided with ground wire 5; between high-voltage switchgear 1 and autotransformer The connecting wires between the transformer cabinets 2 are connected to the compensation cabinet 4 .

[0011] figure 2 As shown: the circuit setting switching switch 7 built in the outlet terminal 6 of the compensation cabinet 4 is connected to the current transformer 8 and then to the reactor 9, and then connected to the capacitor 10 and the discharge coil 11. A grounding line 12 is provided between the current inductor 8 and the reactor 9 in the compensation cabinet 4 .

[0012] Among the components in the compensation cabinet 4 of the present invention, the reactor 9 can filter out the fifth harmonic wave of the power grid when the motor 3 ...

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Abstract

The present invention provides a TGRB high-voltage step-down soft start device. A wire of a high-voltage switch cabinet is connected with a motor, and an another wire of the high-voltage switch cabinet is connected with an autotransformer and then connected with the motor; the autotransformer is provided with a ground wire; and a compensating cabinet is connected with a connection wire between thehigh-voltage switch cabinet and the autotransformer. Therefore, an integrated body can enable the motor not to absorb reactive power from a power grid when the motor is started, and can have a protection effect on a capacitor so that it is beneficial to allow operation of other devices not to be influenced.

Description

technical field [0001] The invention relates to a soft start of a motor, in particular to a TGRB high voltage drop compensation soft start device. Background technique [0002] When the motor is running, it has a certain amount of reactive power, which is used to establish a stable magnetic field to make the motor run normally. This kind of reactive power is obtained from the power supply grid, especially the current generated by a high-power motor will be greater. This high-power It will increase the burden on the power grid and directly affect the normal operation of other equipment. Contents of the invention [0003] The purpose of the present invention is to provide a TGRB high-voltage drop-compensation soft starter, which can start the motor without increasing the burden on the power grid, and without affecting the operation of other equipment. [0004] The present invention includes a high-voltage switchgear, an autotransformer cabinet and a motor. The adopted techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02P1/16H02J3/01
CPCH02J3/01H02J3/18H02P1/16Y02E40/30Y02E40/40
Inventor 李斌朱运方朱运强
Owner XIANGFAN TENGHUI ELECTRICAL MFG
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