CN87203635U - Multi-function over voltage protector of house electrical equipment - Google Patents
Multi-function over voltage protector of house electrical equipment Download PDFInfo
- Publication number
- CN87203635U CN87203635U CN 87203635 CN87203635U CN87203635U CN 87203635 U CN87203635 U CN 87203635U CN 87203635 CN87203635 CN 87203635 CN 87203635 U CN87203635 U CN 87203635U CN 87203635 U CN87203635 U CN 87203635U
- Authority
- CN
- China
- Prior art keywords
- voltage
- electrical equipment
- utility
- function over
- house electrical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a multi-function over voltage protector of house electrical equipment, which is characterized in that a voltage-sensitive device which is protected by an insulation casing is firstly connected in series with a choked-flow inductance and then connected with two electrode leads of the base of a plug. The multi-function over voltage protector of house electrical equipment is connected in parallel with household appliances after being arranged on a fuse wire; the voltage-sensitive device is made of zinc oxide materials; when the voltage the power supply exceeds the normal voltage, the utility model absorbs energy in a mode that the electric current is rapidly increased in order to make the voltage of the power supply end maintain normal or burn out the fuse wire to protect the household electric appliances from over-voltage.
Description
The utility model is to have multifunctional household electrical appliance overvoltage protection devices such as lightning protection, absorption " surge " and overvoltage protection in the single phase distribution equipment.
In the three-phase four-wire power supply electrical network, often the center line (zero line) because of distribution transformer opens circuit with arbitrary phase line misconnection or center line, domestic power grid voltage is raise, thereby damage white goods such as a large amount of television sets, refrigerator, radio-cassette player, make the country and the masses' property be subjected to heavy losses, this type of accident occurs repeatedly at home.The Beijing area just has repeatedly that the electrical network center line is cut off, the center line fuse is fused in construction in recent years, superpotential example appears in center line and reasons such as phase line misconnection and center line loose contact.The major accident that the high-grade household electrical appliance such as refrigerator of entire building, whole unit are burnt once took place, and had caused enormous economic loss.The center line of the transformer in Luoyang City is blown, surplus the household electrical appliance of direct losses reach 50,000 yuan.
In addition, thunderbolt, " surge " electric wave also are the unsafe key factors of household electrical appliance.
So, take effective safeguard measure, prevent that this type of accident from taking place, and just becomes urgent day by day task.
In recent years, the someone has invented the overvoltage protection device that utilizes an element to the overvoltage sensitivity (gas-filled tube) and relay to constitute, for example China 85200061U utility model patent.Though cost is lower, also be convenient to produce in enormous quantities because its performance is limit: reach the several seconds time of delay, solve thunderbolt and " surge " to the damage of household electrical appliance still have any problem, easily oxidized loose contact, the reduction reliability etc. of causing in contact of relay.
That the purpose of this utility model is to provide is that a kind of suitable family uses, complete function, convenient and reliable, price is more cheap and the minimum and maintenance free multifunctional household electrical appliance overvoltage protection device of self power consumption.
Fig. 1 is a structure chart of the present utility model.Insulation crust is made up of loam cake (1) and plug base (2).Two contact conductors (3) are housed on the base (2).One end of varistor (5) directly is welded on the contact conductor, the other end be welded on another root contact conductor after a choked flow inductance (4) is connected.There are two lead-in wires (6) the loam cake inboard, and it plays a part to be connected with base with case top lid.For prevent to transship the transient protection device in operate time because temperature is too high, air expansion and cause the spalling shell, shell need have one or more air vent hole (7), so that circulation of air, heat radiation.
The utility model is used with the socket with two jacks.Varistor is used be zinc oxide varistor it have good overvoltage absorbent properties.
Fig. 2 is a winding diagram of indicating the utility model position in electrical network.Two lead-in wires (3) of the plug base of the utility model (8) are inserted in the sockets (9), socket (9) is installed in fuse (10) afterwards, its two contact conductors are in parallel with household electrical appliance (11).
The utility model has made full use of the volt-ampere characteristic (a) of lightning protection zinc oxide varistor shown in Figure 3, characteristic (b) and Ou-time characteristic (c) when amp-.Under the normal voltage situation, resistance of the present utility model is high-impedance state greater than 1.0M Ω, and the electric current that passes through is less than 30 μ A(microamperes).The overvoltage that causes when thunder and lightning, " surge " electric wave and other reasons " is rushed " the 1st microsecond of going into power supply and is begun, and the utility model promptly presents low resistive state rapidly, absorbs energy in the mode that increases electric current rapidly.Maximum current can reach the 1000A(ampere), thus power end voltage is no longer risen and return to the normal voltage state rapidly.If run into the overvoltage that the duration surpasses 28 microseconds, fuse is subjected to the impact of heavy current and fuses, and household electrical appliance are unlikely to be damaged thereby make.
The choked flow inductance of connecting between varistor and contact conductor, little " surge " electric wave that can stop unlikely damage household electrical appliance can prolong the life-span of protector like this by protector.
When overvoltage " rush " go into power supply after, this protector is low-resistance, current state, temperature raises in the shell, the shell spalling takes place in air expansion easily.Protector outer casing is provided with one or more air vent holes, just can completely address this problem than the garden, and safety not only, and prolonged life-span of protector.
The utility model does not have self power supply, and power consumption is very little, response time short (less than 28 μ seconds), contactless, reliability height. Socket can adopt the dark formula socket of commercially available single-phase double-purpose, and versatility is arranged. The utility model can according to the nonlinear characteristic of zinc oxide varistor, be made the protector that adapts to from 50 volts to 380 volts of different sizes. The utility model is simple in structure, power consumption is very few, and the reliability height is easy to use, must not keep in repair, can be mass-produced and cost very low.
Claims (2)
1, a kind of multifunctional household electrical appliance overvoltage protection device is characterized in that insulation crust is made up of loam cake and plug base.Two contact conductors are housed on the base.One end of zinc oxide varistor directly is welded on the contact conductor, the other end be welded on another root contact conductor after a choked flow inductance is connected.
2, multifunctional household electrical appliance overvoltage protection device according to claim 1 is characterized in that insulation crust has an air vent hole at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87203635 CN87203635U (en) | 1987-03-17 | 1987-03-17 | Multi-function over voltage protector of house electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87203635 CN87203635U (en) | 1987-03-17 | 1987-03-17 | Multi-function over voltage protector of house electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87203635U true CN87203635U (en) | 1988-04-13 |
Family
ID=4819617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87203635 Granted CN87203635U (en) | 1987-03-17 | 1987-03-17 | Multi-function over voltage protector of house electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87203635U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272300A (en) * | 2020-02-27 | 2020-06-12 | 明光旭升科技有限公司 | High radiator protector temperature sensor that stability is strong of security |
-
1987
- 1987-03-17 CN CN 87203635 patent/CN87203635U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272300A (en) * | 2020-02-27 | 2020-06-12 | 明光旭升科技有限公司 | High radiator protector temperature sensor that stability is strong of security |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213461112U (en) | Active intelligent electric shock prevention alarm protector for power utilization circuit | |
| CN87203635U (en) | Multi-function over voltage protector of house electrical equipment | |
| CN203039363U (en) | Three-phase surge protector | |
| CN201118225Y (en) | Primary current limiting resonance eliminating device | |
| CN2166534Y (en) | Multi-plug receptacle with overcurrent overvoltage protector | |
| CN213753986U (en) | Overvoltage protector | |
| CN2279724Y (en) | Leakage breaker with zero line detection function | |
| CN216698226U (en) | Temperature protector | |
| CN2117656U (en) | Low voltage protector for electric appliances | |
| CN2155621Y (en) | Overvoltage and overcurrent automatic protection device | |
| CN2383250Y (en) | Anti lighting stroke device for electric appliance | |
| CN2439737Y (en) | Device for preventing house keeping electric appliance from being struck by lightning | |
| CN210468769U (en) | Intelligent circuit breaker | |
| CN2376685Y (en) | Power source protective module | |
| CN2281029Y (en) | Lightning-protection overvoltage protective moudel for power supply | |
| CN216928210U (en) | Miniature socket lightning protection device | |
| CN2571047Y (en) | Multifunctional earth leakage protective device | |
| CN208706350U (en) | A kind of neutral point grounding resistor | |
| CN2131219Y (en) | Household lightning-protection socket | |
| CN201926678U (en) | Burning-prevention three-phase electric energy meter | |
| CN208908205U (en) | A kind of novel overheat overcurrent power-off protection device | |
| CN87208813U (en) | Over-voltage protection socket for household electric appliances | |
| CN2559151Y (en) | Electric appliance protection eathing monitoring device | |
| JPS6242484Y2 (en) | ||
| CN2146802Y (en) | Multi-functional fuse box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term |