High-energy capacity overvoltage absorber

A technology of absorbers and high-voltage fuses, which is applied to emergency protection circuit devices, electrical components, circuit devices, etc. for limiting overcurrent/overvoltage, and can solve problems such as interphase short circuit, accumulated damage to insulation in electrical equipment, etc. Achieve the effect of reducing the residual voltage value, eliminating the protection dead zone, and suppressing the peak overvoltage

Inactive Publication Date: 2016-08-24
合肥仁德电子科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are the following voltages in the 3-35KW power system: operating overvoltage of equipment such as circuit breakers, metal and arc grounding overvoltage generated when single-phase metal is grounded And lightning strikes are atmospheric overvoltages, etc. Some peak overvoltages may reach a maximum of 3.5 times the phase voltage. If such an overvoltage acts on the power grid for several hours, it will inevitably cause cumulative damage to the internal insulation of electrical equipment. If the insulation is broken down to the ground in the weak link of the insulation of all phases, it will cause a major accident of short circuit between phases

Method used

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  • High-energy capacity overvoltage absorber

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Embodiment Construction

[0008] see figure 1 , a high-capacity overvoltage absorber, which includes nonlinear resistors FR1, FR2, high-voltage fuse RD, capacitor C, and resistor R. One end of the nonlinear resistor FR2 is used as a port, and the other end is connected to one end of the resistor R and the capacitor C respectively. One end is connected to one end of the non-linear resistor FR1, the other end of the resistor R, the other end of the capacitor C, and the other end of the non-linear resistor FR1 are respectively connected to one end of the high-voltage fuse RD, and the other end of the high-voltage fuse RD is used as the other port.

[0009] Resistor R and capacitor C form a high-frequency channel to transmit the high-frequency peak voltage generated in the system to the non-linear resistor FR2, and the non-linear resistor FR2 acts to absorb the peak overvoltage and limit the high-frequency peak voltage not to exceed a certain range, thus ensuring In order not to generate excessive voltage ...

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Abstract

The invention discloses a high-energy capacity overvoltage absorber, and relates to the technical field of overvoltage suppression of a power supply. The high-energy capacity overvoltage absorber comprises non-linear resistors FR1 and FR2, a high-voltage fuse RD, a capacitor C and a resistor R, wherein one end of the non-linear resistor FR2 is taken as a port, the other end of the non-linear resistor FR2 is connected with the one end of the resistor R, one end of the capacitor C and one end of the non-linear resistor FR1 separately, the other end of the resistor R, the other end of the capacitor C and the other end of the non-linear resistor FR1 are separately connected with one end of the high-voltage fuse RD, and the other end of the high-voltage fuse RD is taken as another port. The high-energy capacity overvoltage absorber has the advantages of high voltage limiting effect, low residual voltage value and high energy gathering and absorbing effect.

Description

technical field [0001] The invention relates to the technical field of power system overvoltage suppression, in particular to a high-capacity overvoltage absorber. Background technique [0002] At present, there are the following voltages in the 3-35KW power system: operating overvoltage of circuit breakers and other equipment, metal and arc grounding overvoltage generated when single-phase metal is grounded, and atmospheric overvoltage generated by lightning strikes, etc. Some peak overvoltages Its maximum value may reach more than 3.5 times the phase voltage. If such an overvoltage acts on the power grid for several hours, it will inevitably cause cumulative damage to the insulation in the electrical equipment. It will cause a major accident of phase-to-phase short circuit. Contents of the invention [0003] The purpose of the present invention is to provide a high-capacity overvoltage absorber with good voltage limiting effect, low residual voltage value, and good ener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
CPCH02H9/04
Inventor 李阳
Owner 合肥仁德电子科技有限公司
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