CN204732850U - A kind of earth leakage circuit-breaker with lightning protection, antioverloading voltage protection - Google Patents
A kind of earth leakage circuit-breaker with lightning protection, antioverloading voltage protection Download PDFInfo
- Publication number
- CN204732850U CN204732850U CN201520503091.0U CN201520503091U CN204732850U CN 204732850 U CN204732850 U CN 204732850U CN 201520503091 U CN201520503091 U CN 201520503091U CN 204732850 U CN204732850 U CN 204732850U
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- power line
- protection
- switch
- threading
- load
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Abstract
With an earth leakage circuit-breaker for lightning protection, antioverloading voltage protection, comprise, on-load switch of can threading off, is arranged at the power line of three-phase or two-phase; Zero sequence current mutual inductor, its primary coil is arranged at power line; Detection of electrical leakage amplification driving circuit, one end is connected to zero sequence current mutual inductor secondary coil, and the other end is connected to the load side line of described on-load switch of can threading off; Dropout breaking coil, its one end is connected to the power line of the load side of on-load switch of can threading off, and the other end is connected to detection of electrical leakage amplification driving circuit; Test button and current-limiting resistance, be connected across power line after being connected in series; A discharge tube matched with user's supply voltage, is connected to the load side power line of on-load switch of can threading off after itself and dropout breaking coil are connected in series.The utility model is for numerous 220V mains switch user, and when having 380V overload voltage, Leibo intrusion, protection switch trips immediately, reaches the protection personal safety of user and the operation of power consumption equipment safety.
Description
Technical field
The utility model relates to leakage switch, particularly a kind of earth leakage circuit-breaker with lightning protection, antioverloading voltage protection.
Background technology
For most of user, we often use alternating current 220V power supply.At some places, occur the situation of power supply wrong, make user's power supply become 380V.Also have zero line to blow, neutral point drifting etc., have burnt out the household electrical appliance of numerous family soon, have caused no small economic loss, make troubles to the daily life of numerous family.
Summary of the invention
The purpose of this utility model is to design a kind of earth leakage circuit-breaker with lightning protection, antioverloading voltage protection; for vast 220V mains switch user; when having 380V overload voltage, Leibo intrusion; protection switch trips immediately, reaches the protection personal safety of user and the operation of power consumption equipment safety.
For achieving the above object, the technical solution of the utility model is:
With an earth leakage circuit-breaker for lightning protection, antioverloading voltage protection, comprise, on-load switch of can threading off, is arranged at the power line of three-phase or two-phase; Zero sequence current mutual inductor, its primary coil is arranged at described power line; Detection of electrical leakage amplification driving circuit, one end is connected to described zero sequence current mutual inductor secondary coil, and the other end is connected to the load side line of described on-load switch of can threading off; Dropout breaking coil, its one end is connected to the power line of the load side of described on-load switch of can threading off, and the other end is connected to described detection of electrical leakage amplification driving circuit; Test button and current-limiting resistance, be connected across described power line after being connected in series; It is characterized in that, also comprise, a discharge tube matched with user's supply voltage, after itself and dropout breaking coil are connected in series, be connected to the load side power line of described on-load switch of can threading off.
In the utility model leakage switch, except there is the short-circuit protection of leakage switch, overload protection, earth leakage protective, also there is thunder-lightning, defencive function that anti-overvoltage invades.
The utility model is equipped with the lightning protection of discharge tube, the switch of antioverloading voltage protection, does not produce energy consumption when normal use.Only when overvoltage, the moment coil motion of tripping operation produces very little energy consumption.
The utility model protection switch is in the circuit had a power failure, and protection switch does not have disjunction, if Leibo invades, protection switch also can auto-action, cut-off switch.
Because whole process only need with adding a discharge tube, discharge tube is worth cheap, so cost is very low.The scope of protection is large, use safety, i.e. economy but also practical, is worth of widely use.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
See Fig. 1, a kind of earth leakage circuit-breaker with lightning protection, antioverloading voltage protection of the present utility model, comprise, can thread off on-load switch SA, is arranged at the power line of three-phase or two-phase; Zero sequence current mutual inductor CT, its primary coil is arranged at described power line; Detection of electrical leakage amplification driving circuit 10, one end is connected to described zero sequence current mutual inductor CT secondary coil, and the other end is connected to the load side line of the described on-load switch SA that can thread off; Dropout breaking coil YA, its one end is connected to the power line of the load side of the described on-load switch SA that can thread off, and the other end is connected to described detection of electrical leakage amplification driving circuit 10; Test button SB and current-limiting resistance R, is connected across described power line after being connected in series; It comprises, a discharge tube GDT matched with user's supply voltage, is connected to the load side power line of the described on-load switch SA that can thread off after itself and dropout breaking coil YA are connected in series.
The tripping coil that in the utility model, the dropout of a band tripping coil is opened is connected with discharge tube, the power supply place (the L phase of 220V and zero line N) of access trip switch load side.
When supply voltage is normal, the place value of discharge tube can bear normal supply voltage value, and discharge tube does not have electric current to pass through, and tripping coil can not start, and the switch of tripping coil keeps normally closing a floodgate operation, does not trip.When supply voltage is elevated to discharge tube puncture voltage (discharge tube puncture voltage is optional), discharge tube punctures and is equivalent to short circuit, and supply voltage acts on tripping coil immediately, makes switch trip, protection consumer electronics equipment.Because tripping coil and discharge tube are connected to the load side of switch, after switch trip, power supply disconnects, and discharge tube returns to again high value state, and tripping coil is in open circuit again, enters guard mode next time.
The utility model is connected to the load side of mains switch after discharge tube and dropout breaking coil being connected in series, namely discharge tube is parallel to earth leakage protective outlet, connects with dropout breaking coil.Discharge tube is high-impedance state when voltage is normal, is equivalent to open circuit, does not affect the earth leakage protective outlet of switch, between them be or relation, leakage switch protection is normal effectively.
Owing to adopting discharge tube, when power supply is normal, discharge tube does not have electric current to pass through, and it does not consume electric energy, very energy-conservation.When power supply raises abnormal, discharge tube punctures immediately, starts tripping coil tripping operation.Without power supply after switch trip, discharge tube does not have power supply yet, and discharge tube returns to again high resistant normal condition.Can protect again next time.
Lightning protection effect of the present utility model is very outstanding; even if switch does not have power supply; if switch closes; as mine transmitting device user; the direct voltage of thunder and lightning can disruptive discharge pipe immediately, starts tripping coil, and switch trips disconnect user circuit immediately; the person of protection user and property safety, reach good lightning protection effect.
The utility model can be avoided causing user's personal injury and property loss because overload voltage and Leibo intrusion cause circuit voltage suddenly to raise, having general using value well.
Claims (1)
1. the earth leakage circuit-breaker with lightning protection, antioverloading voltage protection, comprises,
Can to thread off on-load switch, to be arranged at the power line of three-phase or two-phase;
Zero sequence current mutual inductor, its primary coil is arranged at described power line;
Detection of electrical leakage amplification driving circuit, one end is connected to described zero sequence current mutual inductor secondary coil, and the other end is connected to the load side line of described on-load switch of can threading off;
Dropout breaking coil, its one end is connected to the power line of the load side of described on-load switch of can threading off, and the other end is connected to described detection of electrical leakage amplification driving circuit;
Test button and current-limiting resistance, be connected across described power line after being connected in series; It is characterized in that, also comprise, a discharge tube matched with user's supply voltage, after itself and dropout breaking coil are connected in series, be connected to the load side power line of described on-load switch of can threading off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520503091.0U CN204732850U (en) | 2015-07-13 | 2015-07-13 | A kind of earth leakage circuit-breaker with lightning protection, antioverloading voltage protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520503091.0U CN204732850U (en) | 2015-07-13 | 2015-07-13 | A kind of earth leakage circuit-breaker with lightning protection, antioverloading voltage protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204732850U true CN204732850U (en) | 2015-10-28 |
Family
ID=54391175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520503091.0U Expired - Fee Related CN204732850U (en) | 2015-07-13 | 2015-07-13 | A kind of earth leakage circuit-breaker with lightning protection, antioverloading voltage protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204732850U (en) |
-
2015
- 2015-07-13 CN CN201520503091.0U patent/CN204732850U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20170713 |