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Energy-saving lightning protection device of agricultural irrigation line

A lightning protection device and circuit technology, which is applied to electrical components, pulse technology, electronic switches, etc., can solve problems such as increased power loss, unsafe equipment loss, and equipment burnout, so as to prevent lightning damage, reduce maintenance costs, and reduce electricity meters. The effect of loss

Inactive Publication Date: 2014-07-30
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Field equipment generally lacks personnel maintenance. Generally, users have low ideological awareness. After using the electricity, they leave after swiping the card. Few people disconnect the leakage circuit breaker at the front end. Even in the slack winter and the rarely used rainy season, the equipment is still under power. In addition, lightning strikes are also a fatal problem. After a lightning strike, several or even dozens of sets of equipment may be burned down. The maintenance cost of equipment damaged due to lightning strikes or long-term electrification of equipment is as high as ten Tens of thousands, at this stage, the repair and maintenance of agricultural row equipment has become a heavy burden for the power supply department

Method used

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  • Energy-saving lightning protection device of agricultural irrigation line

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Embodiment Construction

[0009] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0010] like figure 1 As shown, the energy-saving lightning protection device for the agricultural row line includes an AC contactor, a time delay relay, and a leakage circuit breaker. The normally closed contact of the AC contactor is a power supply for the time delay relay; Afterwards, the leakage circuit breaker is provided with an overload current through contact pull-in; the delay relay includes a NE555 circuit module connected in the RT-6.2-CT mode, and the time of the NE555 circuit module is set to 0.5-1 hour; the NE555 circuit module 2. A test circuit with a test switch and a 0.5KΩ resistor in series is connected in parallel between pin 6 and pin 4.

[0011] The 380V AC is stepped down by a 0.68μf capacitor, the negative half-axis is connected to B through a 12V voltage regulator tube to form a loop, and the positive half-axis...

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Abstract

The invention discloses an energy-saving lightning protection device of an agricultural irrigation line, and particularly relates to the technical field of earth leakage protection circuits with predetermined delay devices. The energy-saving lightning protection device comprises an alternating current contactor, a delay relay and a residual-current circuit breaker, and a normally-closed contact of the alternating current contactor supplies electricity to the delay relay; the delay relay provides disconnected overload currents for the residual-current circuit breaker through contact attraction after reaching a set time. According to the energy-saving lightning protection device, when no customers use electricity, a power source is disconnected automatically in a delayed mode, losses of an ammeter can be lowered, and damage caused by lightning stroke can also be prevented, and the maintenance cost of agricultural irrigation equipment is lowered.

Description

technical field [0001] The invention relates to the technical field of leakage protection circuits with predetermined delay devices. Background technique [0002] For the prepaid metering equipment for agricultural platoons in the field, the most difficult thing is lack of management and being struck by lightning. Field equipment generally lacks personnel maintenance. Generally, users have low ideological awareness. After using the electricity, they leave after swiping the card. Few people disconnect the leakage circuit breaker at the front end. Even in the slack winter and the rarely used rainy season, the equipment is still under power. In addition, lightning strikes are also a fatal problem. After a lightning strike, several or even dozens of sets of equipment may be burned down. The maintenance cost of equipment damaged due to lightning strikes or long-term electrification of equipment is as high as ten Tens of thousands, the repair and maintenance of agricultural row e...

Claims

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Application Information

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IPC IPC(8): H03K17/28
Inventor 张慧鹏
Owner STATE GRID CORP OF CHINA
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