CN203760767U - Grounding all-purpose self-checking plug head seat having null-line disconnection protection function - Google Patents
Grounding all-purpose self-checking plug head seat having null-line disconnection protection function Download PDFInfo
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- CN203760767U CN203760767U CN201320288849.4U CN201320288849U CN203760767U CN 203760767 U CN203760767 U CN 203760767U CN 201320288849 U CN201320288849 U CN 201320288849U CN 203760767 U CN203760767 U CN 203760767U
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Abstract
The utility model discloses a grounding all-purpose self-checking plug head seat having a null-line disconnection protection function. Null-line disconnection protection is achieved by connecting an electric resistor between a null line and a ground wire of a single-phase three-pole plug head or a single-phase three-pole plug seat, and the electric resistor is controlled through a selector switch; when the null line of an external power supply circuit is disconnected or is lapped on a live wire, an electric current of the electric resistor connected between the null line and the ground wire is increased to a certain value, an electric leakage protector of a user trips immediately, and electric equipment of the user can be effectively protected against damage. The grounding all-purpose self-checking plug head seat is characterized in that a null-line disconnection protection selector switch, safety self-checking indicator lights and test press buttons are mounted on the single-phase three-pole plug head or the single-phase three-pole plug seat. If both the indicator lights SD2 and SD3 are turned on at the same time, then the position of the live wire L1 is correct; otherwise, the live wire L1 is wrong in wire connection and the equipment cannot be used until the faults are removed. The grounding all-purpose self-checking plug head seat having the null-line disconnection protection function is advantaged by simple circuits, low cost, convenient operation and high practical value.
Description
Technical field
The utility model relates to safe power supply, safety utilization of electric power, the ground connection of low-voltage power supply system and detects and protection off zero field, particularly protection off zero and ground connection general-purpose self-checking plug seat.
Background technology
There is phenomenon off zero in electric power system, particularly the zero line of residential quarter three-phase and four-line power supply breaks suddenly, when three-phase firewire load is serious uneven, will cause part family voltage to be elevated to suddenly to exceed 250V and even reach 400V left and right, or zero line is disconnected to be dropped on a certain phase firewire, will cause a large amount of household electrical appliance to be burnt, once similar accident occurs, and also there is no at present effective safeguard measure; Current each urban and rural housing or industrial and mining enterprises are all used a large amount of single-phase tripolar plug seats, some family or enterprise security consciousness are not strong, house decoration and new equipment are installed unearthed line or ground wire does not meet safety requirements, be directed at and finally bring disaster to into the large Woe of loss of life or personal injury, how to find to detect the potential safety hazard of power consumption equipment, lack at present simple and effective measure.For example the simplest 220 volts of single-phase three pole sockets, because existing socket is that protection against electric shock jack gap is little and baffle plate is housed, voltage test pencil or universal meter indicator are difficult for injecting, cannot intuitively confirm the problem that ground wire exists, a kind of easy ground connection general-purpose self-checking plug seat of anxious palpus judge the fail safe of power consumption equipment and the reliability of earth system, to eliminate safe hidden trouble, stop the generation of accident.
Summary of the invention
The purpose of this utility model is for above-mentioned defect, provides one to have protection off zero, meets safety requirements, easy and simple to handle, can detect the protection off zero and the ground connection general-purpose self-checking plug seat that judge single-phase three pole socket security performances.
The technical solution of the utility model is protection off zero and ground connection general-purpose self-checking plug seat, it is characterized in that installing protection selector switch off zero and safe self-inspection indicator light and test An Button on the power distributor of single-phase three utmost point disjunctor connector assemblies or single-phase tripolar plug or single-phase three pole sockets or multiple single-phase three utmost point jacks, the circuit structure of protection off zero is zero line N1 contact resistance R1 in single-phase tripolar plug CHT1, resistance R 1 other end connects protection selector switch K1 off zero, the protection selector switch K1 other end off zero connects safety line E1, protection selector switch K1 off zero is equivalent to resistance R 1 while connection and is connected across between zero line N1 and safety line E1, single-phase tripolar plug CHT1 inserts single-phase three pole sockets of user, in the time that externally fed circuit occurs that zero line disconnects or rides on live wire, due to the different three-phase voltage disequilibriums of three phase supply power source loads, between user's zero line N1 and safety line E1, voltage may increase, the Current rise that is connected across resistance R 1 between zero line N1 and safety line E1 is during to a certain numerical value, user's earth leakage protective can trip immediately, effectively protection user's power consumption equipment exempts from damage, between safety line E1 and live wire L1 and between safety ground E1 and zero line N1 and between live wire L1 and zero line N1, self-inspection indicator light and test button are installed respectively, bright and secretly judge safety line E1 and zero line N1 and live wire L1 whether position is correct separately according to indicator light, further confirm by test button again, particular circuit configurations is that in single-phase tripolar plug CHT1, safety line E1 connects protection selector switch K1 off zero simultaneously, test button SB1, indicator light SD1 and indicator light SD2, indicator light SD1 contact resistance R2, protection selector switch K1 other end contact resistance R1 off zero, resistance R 1 other end is connected zero line N1 together with resistance R 2 other ends, indicator light SD2 other end contact resistance R3, test button SB1 other end contact resistance R4, resistance R 3 other ends are connected live wire L1 together with resistance R 4 other ends, zero line N1 connects indicator light SD3 and test button SB2, indicator light SD3 other end contact resistance R5, test button SB2 other end contact resistance R6, resistance R 5 other ends are connected live wire L1 together with resistance R 6 other ends, indicator light SD1, indicator light SD2 and indicator light SD3 use light-emitting diode or neon lamp, resistance R 2 while using light-emitting diode, the resistance of resistance R 5 and resistance R 3 is selected 82K Ω left and right, can also increase a diode connects with light-emitting diode and improves reverse breakdown voltage protection light-emitting diode, resistance R 2 while using neon lamp, more than the resistance of resistance R 3 and resistance R 5 is selected 1M Ω, when single-phase tripolar plug CHT1 inserts in user's single-phase three pole sockets, if indicator light SD2 and indicator light SD3 be the correct position of bright explanation live wire L1 simultaneously, depress test button SB2 reactionless, after depressing test button SB1, the tripping operation of user's earth leakage protective illustrates that user's single-phase three pole sockets are safe and reliable, otherwise having Miswire to wait to fix a breakdown uses again, the resistance of resistance R 1 is 300-500 Ω left and right, the resistance of resistance R 4 and resistance R 6 is 6.8K Ω left and right.
Protection off zero described in the utility model and ground connection general-purpose self-checking plug seat have protector off zero, there is phenomenon off zero in electric power system, particularly the zero line of residential quarter three-phase and four-line power supply breaks suddenly, when three-phase firewire load is serious uneven, will cause part family voltage to be elevated to suddenly to exceed 250V and even reach 400V left and right, or zero line is disconnected to be dropped on a certain phase firewire, will cause a large amount of household electrical appliance to be burnt, once similar accident occurs, the phenomenon that protector off zero can avoid electrical appliance to be burnt; The single-phase three pole socket safety grounds with the correct connection to safety ground, the user such as safety ground and power consumption equipment to power supply, electricity consumption, the commercial house, residential quarters, independent resident family etc. detect, and guarantee safety utilization of electric power.The advantage that the utility model circuit is simple, cost is low, easy to operate, very with practical value.
Brief description of the drawings
Fig. 1 protection off zero and general-purpose self-checking plug seat circuit one schematic diagram
Fig. 2 protection off zero and general-purpose self-checking plug seat circuit two schematic diagrams
Single-phase three utmost point disjunctor connector assembly profile schematic diagrames of Fig. 3 protection off zero and the self-inspection of ground connection general-purpose
Fig. 4 protection off zero and ground connection general-purpose self-inspection power distributor Xiao plate one profile floor map
Fig. 5 protection off zero and ground connection general-purpose self-inspection power distributor Xiao plate two profile floor map
Fig. 6 protection off zero and ground connection general-purpose self-inspection power distributor head profile floor map
L1 live wire, N1 zero line, E1 safety line, CHT1 single-phase tripolar plug, K1 protection selector switch off zero, SB1-SB2 test button, SD1-SD3 indicator light, R1-R6 resistance in Fig. 1.
L1 live wire, N1 zero line, E1 safety line, CHT1 single-phase tripolar plug, K1 protection selector switch off zero, SB1-SB2 test button, SD1-SD3 indicator light, R1-R6 resistance in Fig. 2.
L live wire, N zero line, E safety line, CH single-phase tripolar plug, K protection selector switch off zero, SB test button, SD indicator light in Fig. 3.
L live wire, N zero line, E safety line, CHT single-phase tripolar plug, K protection selector switch off zero, SB test button, SD indicator light, single-phase three pole sockets of CHZ, K power distributor master switch in Fig. 4.
L live wire, N zero line, E safety line, single-phase three pole sockets of CHZ0, K protection selector switch off zero, SB test button, SD indicator light, single-phase three pole sockets of CHZ, K power distributor master switch in Fig. 5.
L live wire, N zero line, E safety line, CH single-phase tripolar plug, K protection selector switch off zero, SB test button, SD indicator light in Fig. 6.
Embodiment
Fig. 1, Fig. 2 is protection off zero and general-purpose self-checking plug seat circuit theory diagrams, protection off zero and ground connection general-purpose self-checking plug seat are protection selector switch off zero and safe self-inspection indicator light and test to be installed on the power distributor of single-phase three utmost point disjunctor connector assemblies or single-phase tripolar plug or single-phase three pole sockets or multiple single-phase three utmost point jacks An Button, the circuit structure of protection off zero is zero line N1 contact resistance R1 in single-phase tripolar plug CHT1, resistance R 1 other end connects protection selector switch K1 off zero, the protection selector switch K1 other end off zero connects safety line E1, protection selector switch K1 off zero is equivalent to resistance R 1 while connection and is connected across between zero line N1 and safety line E1, single-phase tripolar plug CHT1 inserts single-phase three pole sockets of user, in the time that externally fed circuit occurs that zero line disconnects or rides on live wire, due to the different three-phase voltage disequilibriums of three phase supply power source loads, between user's zero line N1 and safety line E1, voltage may increase, the Current rise that is connected across resistance R 1 between zero line N1 and safety line E1 is during to a certain numerical value, user's earth leakage protective can trip immediately, effectively protection user's power consumption equipment exempts from damage, between safety line E1 and live wire L1 and between safety ground E1 and zero line N1 and between live wire L1 and zero line N1, self-inspection indicator light and test button are installed respectively, bright and secretly judge safety line E1 and zero line N1 and live wire L1 whether position is correct separately according to indicator light, further confirm by test button again, particular circuit configurations is that in single-phase tripolar plug CHT1, safety line E1 connects protection selector switch K1 off zero simultaneously, test button SB1, indicator light SD1 and indicator light SD2, indicator light SD1 contact resistance R2, protection selector switch K1 other end contact resistance R1 off zero, resistance R 1 other end is connected zero line N1 together with resistance R 2 other ends, indicator light SD2 other end contact resistance R3, test button SB1 other end contact resistance R4, resistance R 3 other ends are connected live wire L1 together with resistance R 4 other ends, zero line N1 connects indicator light SD3 and test button SB2, indicator light SD3 other end contact resistance R5, test button SB2 other end contact resistance R6, resistance R 5 other ends are connected live wire L1 together with resistance R 6 other ends, indicator light SD1, indicator light SD2 and indicator light SD3 use light-emitting diode or neon lamp, resistance R 2 while using light-emitting diode, the resistance of resistance R 5 and resistance R 3 is selected 82K Ω left and right, can also increase a diode connects with light-emitting diode and improves reverse breakdown voltage protection light-emitting diode, resistance R 2 while using neon lamp, more than the resistance of resistance R 3 and resistance R 5 is selected 1M Ω, when single-phase tripolar plug CHT1 inserts in user's single-phase three pole sockets, if indicator light SD2 and indicator light SD3 be the correct position of bright explanation live wire L1 simultaneously, depress test button SB2 reactionless, after depressing test button SB1, the tripping operation of user's earth leakage protective illustrates that user's single-phase three pole sockets are safe and reliable, otherwise having Miswire to wait to fix a breakdown uses again, the resistance of resistance R 1 is 300-500 Ω left and right, the resistance of resistance R 4 and resistance R 6 is 6.8K Ω left and right.
Fig. 3 is single-phase three utmost point disjunctor connector assembly profile schematic diagrames of protection off zero and the self-inspection of ground connection general-purpose, single-phase three utmost point disjunctor connector assemblies in single-phase three utmost point disjunctor connector assemblies of protection off zero and the self-inspection of ground connection general-purpose are that single-phase tripolar plug and single-phase three pole sockets are connected as a single entity, the back of single-phase tripolar plug is single-phase three pole sockets, the protection off zero of resistance voltage-dropping type is installed in its inside and ground connection general-purpose self-checking plug seat circuit forms protection off zero and single-phase three utmost point disjunctor connector assemblies of ground connection general-purpose self-inspection, the circuit structure of protection off zero is protection selector switch K off zero of cross-over connection between zero line N and safety line E in single-phase tripolar plug seat CH, a current-limiting resistance of protection selector switch K series connection off zero, protection selector switch K off zero opens protection off zero while connection, general-purpose self checking structure is that self-inspection indicator light SD and test button SB are installed respectively between safety line E and live wire L and between safety ground E and zero line N and between live wire L and zero line N, self-inspection indicator light SD is in series with dropping resistor or decompression capacitor, test button SB is in series with current-limiting resistance, bright and secretly judge safety line E1 and zero line N1 and live wire L1 whether position is correct separately according to indicator light SD, further confirm by test button SB again, when single-phase tripolar plug seat CH inserts after user's single-phase three pole sockets, if the indicator light SD3 correct position of bright explanation live wire L1 simultaneously between indicator light SD and live wire L and zero line N between safety line E and live wire L, depress between live wire L and zero line N test button SB reactionless, single-phase three pole sockets of depressing between safety line E and live wire L user's earth leakage protective tripping operation explanation user after test button SB are safe and reliable, otherwise having Miswire to wait to fix a breakdown uses again.
Fig. 4, Fig. 5 is protection off zero and ground connection general-purpose self-inspection power distributor profile floor map, protection off zero and ground connection general-purpose self-inspection power distributor plate are that protection selector switch K off zero and indicator light SD and test button SB are installed in the single-phase tripolar plug of single-phase three utmost point power distributors or on first single-phase three pole sockets, the protection off zero of resistance voltage-dropping type is installed in its inside and ground connection general-purpose self-checking plug seat circuit forms protection off zero and ground connection general-purpose self-inspection power distributor, on it, be provided with and insert Xiao's plate master switch K0, when single-phase tripolar plug CH inserts after user's single-phase three pole sockets, if the indicator light SD3 correct position of bright explanation live wire L1 simultaneously between indicator light SD and live wire L and zero line N between safety line E and live wire L, depress between live wire L and zero line N test button SB reactionless, single-phase three pole sockets of depressing between safety line E and live wire L user's earth leakage protective tripping operation explanation user after test button SB are safe and reliable, otherwise having Miswire to wait to fix a breakdown uses again.
Fig. 6 is protection off zero and ground connection general-purpose self-checking plug profile floor map.
Claims (1)
1. protection off zero and ground connection general-purpose self-checking plug seat, it is characterized in that installing protection selector switch off zero and safe self-inspection indicator light and test An Button on the power distributor of single-phase three utmost point disjunctor connector assemblies or single-phase tripolar plug or single-phase three pole sockets or multiple single-phase three utmost point jacks, the circuit structure of protection off zero is zero line N1 contact resistance R1 in single-phase tripolar plug CHT1, resistance R 1 other end connects protection selector switch K1 off zero, the protection selector switch K1 other end off zero connects safety line E1, protection selector switch K1 off zero is equivalent to resistance R 1 while connection and is connected across between zero line N1 and safety line E1, between safety line E1 and live wire L1 and between safety ground E1 and zero line N1 and between live wire L1 and zero line N1, self-inspection indicator light and test button are installed respectively, in single-phase tripolar plug CHT1, safety line E1 connects protection selector switch K1 off zero simultaneously, test button SB1, indicator light SD1 and indicator light SD2, indicator light SD1 contact resistance R2, protection selector switch K1 other end contact resistance R1 off zero, resistance R 1 other end is connected zero line N1 together with resistance R 2 other ends, indicator light SD2 other end contact resistance R3, test button SB1 other end contact resistance R4, resistance R 3 other ends are connected live wire L1 together with resistance R 4 other ends, zero line N1 connects indicator light SD3 and test button SB2, indicator light SD3 other end contact resistance R5, test button SB2 other end contact resistance R6, resistance R 5 other ends are connected live wire L1 together with resistance R 6 other ends, indicator light SD1, indicator light SD2 and indicator light SD3 use light-emitting diode or neon lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320288849.4U CN203760767U (en) | 2013-05-16 | 2013-05-16 | Grounding all-purpose self-checking plug head seat having null-line disconnection protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320288849.4U CN203760767U (en) | 2013-05-16 | 2013-05-16 | Grounding all-purpose self-checking plug head seat having null-line disconnection protection function |
Related Child Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420247600.3U Division CN204167868U (en) | 2013-05-16 | 2013-05-16 | Protector off zero |
| CN201420247579.7U Division CN204167865U (en) | 2013-05-16 | 2013-05-16 | Relay control type protector off zero |
| CN201420247633.8U Division CN203813141U (en) | 2013-05-16 | 2013-05-16 | Capacitor step-down energy-saving faulted neutral line protection and grounding universal self-checking connector assembly |
| CN201420247604.1U Division CN203813140U (en) | 2013-05-16 | 2013-05-16 | Faulted neutral line protection and grounding universal self-checking single-phase three-pole power strip |
| CN201420247642.7U Division CN203813142U (en) | 2013-05-16 | 2013-05-16 | Faulted neutral line protection and grounding universal self-checking single-phase three-pole connected connector assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203760767U true CN203760767U (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320288849.4U Expired - Fee Related CN203760767U (en) | 2013-05-16 | 2013-05-16 | Grounding all-purpose self-checking plug head seat having null-line disconnection protection function |
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| CN (1) | CN203760767U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296541A (en) * | 2013-05-16 | 2013-09-11 | 介国安 | Universal plug with null-line cutoff protection, ground connection and self-checking functions |
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2013
- 2013-05-16 CN CN201320288849.4U patent/CN203760767U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296541A (en) * | 2013-05-16 | 2013-09-11 | 介国安 | Universal plug with null-line cutoff protection, ground connection and self-checking functions |
| CN103296541B (en) * | 2013-05-16 | 2015-10-07 | 介国安 | Protection off zero and ground connection general-purpose self-checking plug seat |
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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 |
Granted publication date: 20140806 Termination date: 20160516 |
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| CF01 | Termination of patent right due to non-payment of annual fee |