CN203813140U - Faulted neutral line protection and grounding universal self-checking single-phase three-pole power strip - Google Patents
Faulted neutral line protection and grounding universal self-checking single-phase three-pole power strip Download PDFInfo
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- CN203813140U CN203813140U CN201420247604.1U CN201420247604U CN203813140U CN 203813140 U CN203813140 U CN 203813140U CN 201420247604 U CN201420247604 U CN 201420247604U CN 203813140 U CN203813140 U CN 203813140U
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Abstract
The utility model discloses a faulted neutral line protection and grounding universal self-checking single-phase three-pole power strip constituted by a single-phase three-pole plug and a plurality of single-phase three-pole sockets. A faulted neutral line protection selection switch K and indicating lamps SD and testing buttons SB are disposed in the single-phase three-pole plug or on the first single-phase three-pole socket, and a resistor step-down or capacitor step-down energy-saving circuit is disposed in the single-phase three-pole power strip. When the neutral line of the external power supply line is broken or is overlapped on the hot line, and the current of a resistor connected between the neutral line and the ground line rises to a certain value, the trip-out of the user leakage protector can be carried out immediately, and therefore the user equipment can be effectively prevented from being damaged. The grounding universal self-checking connector assembly is characterized in that the faulted neutral line protection selection switch, the safety self-checking indicating lamps, and the testing buttons are disposed in the self-checking connector assembly; and when an indicating lamp SD2 and an indicating lamp SD3 are turned on at the same time, the position of the hot line L1 is correct, otherwise the connection is wrong, and the connector assembly can be used only after the removal of the fault. The faulted neutral line protection and grounding universal self-checking single-phase three-pole power strip has advantages of simple circuit, low costs, convenient operation, and 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 single-phase three utmost point power distributors of ground connection general-purpose self check.
Background technology
In electric power system, there is phenomenon off zero, particularly the zero line of residential quarter three-phase and four-line power supply breaks suddenly, during the serious imbalance of three-phase firewire load, will cause part family voltage to be elevated to suddenly over 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; Each urban and rural housing or industrial and mining enterprises are all used a large amount of single-phase tripolar plug seats at present, 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.The simplest 220 volts of single-phase three pole sockets for example, 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 a kind of and has protection off zero, meets safety requirements, easy and simple to handle, can detect protection off zero and single-phase three utmost point power distributors of ground connection general-purpose self check of the single-phase three pole socket security performances of judgement.
The technical solution of the utility model is single-phase three utmost point power distributors of protection off zero and the self check of ground connection general-purpose, it is characterized in that installing protection selector switch K off zero and indicator light SD and test button SB in the single-phase tripolar plug of protection off zero and single-phase three utmost point power distributors of ground connection general-purpose self check or on first single-phase three pole sockets, its inside is provided with the protection off zero of resistance voltage-dropping type and ground connection general-purpose self-checking plug seat circuit or the energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat circuit, form single-phase three utmost point power distributors of protection off zero and the self check of ground connection general-purpose, power distributor master switch KO is installed on it, when single-phase tripolar plug CH inserts after user's single-phase three pole sockets, if the correct position of bright explanation live wire L1 of indicator light SD3 while 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.
Single-phase three utmost point power distributors of described protection off zero and the self check of ground connection general-purpose, comprise the protection off zero of resistance voltage-dropping type and ground connection general-purpose self-checking plug seat circuit, it is characterized in that, on the single-phase tripolar plug of protection off zero and single-phase three utmost point power distributors of ground connection general-purpose self check or single-phase three pole sockets, the protection off zero of resistance voltage-dropping type and ground connection general-purpose self-checking plug seat circuit are installed, 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 connecting 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, when 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 check indicator light and test button are installed respectively, according to indicator light, bright whether position is correct separately with secretly judging safety line E1 and zero line N1 and live wire L1, by test button, further confirm 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 are used 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.
Single-phase three utmost point power distributors of described protection off zero and the self check of ground connection general-purpose, comprise the energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat circuit, it is characterized in that installing on single-phase three utmost point power distributors of protection off zero and the self check of ground connection general-purpose the energy-saving protection off zero of capacitance decompression and ground connection general-purpose self-checking plug seat circuit, particular circuit configurations is the positive pole that in single-phase tripolar plug CHT2, safety line E2 connects diode D1 simultaneously, the positive pole of diode D2, LED 1 negative pole, LED 2 negative poles, protection selector switch K2 off zero and test button SB3, diode D1 negative pole connecting luminous diode LED1 positive pole and capacitor C1, the protection selector switch K2 other end off zero connects capacitor C2, the capacitor C1 other end is connected zero line N2 together with the capacitor C2 other end, diode D2 negative pole connecting luminous diode LED2 positive pole and capacitor C3, the test button SB3 other end connects capacitor C4, the capacitor C3 other end is connected live wire L2 together with the capacitor C4 other end, zero line N2 connects the positive pole of diode D3, LED 3 negative poles and test button SB4, diode D3 negative pole connecting luminous diode LED3 positive pole and capacitor C5, the test button SB4 other end connects capacitor C6, the capacitor C5 other end is connected live wire L2 together with the capacitor C6 other end, current related with by light-emitting diode and diode of the selection of condenser capacity, 2 to 3 milliamperes, the electric current of the bright state of light-emitting diode, use capacitor step-down can economize on electricity more than 90% than resistance step-down, although the electric current by test button need to be greater than 30 milliamperes, due to conduction time just in a flash, consider that cost is still optional with resistance, during normal power supply, between safety line and zero line, there is no voltage or have atomic voltage, the capacitor that protection off zero connects also can be selected resistance.
Single-phase three utmost point power distributors of protection off zero described in the utility model and the self check of ground connection general-purpose have protection off zero, in electric power system, there is phenomenon off zero, particularly the zero line of residential quarter three-phase and four-line power supply breaks suddenly, during the serious imbalance of three-phase firewire load, will cause part family voltage to be elevated to suddenly over 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; There is correct connection to safety ground, the users' such as the safety ground of power supply, electricity consumption, the commercial house, residential quarters, independent resident family etc. and power consumption equipment single-phase three pole socket safety grounds are detected, 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.
Accompanying drawing explanation
The single-phase three utmost point power distributor one profile floor map of Fig. 1 protection off zero and the self check of ground connection general-purpose
The single-phase three utmost point power distributor two profile floor map of Fig. 2 protection off zero and the self check of ground connection general-purpose
The protection off zero of Fig. 3 resistance voltage-dropping type and general-purpose self-checking plug seat circuit one schematic diagram
The protection off zero of Fig. 4 resistance voltage-dropping type and general-purpose self-checking plug seat circuit two schematic diagrams
The energy-saving protection off zero of Fig. 5 capacitor step-down and general-purpose self-checking plug seat circuit theory diagrams
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. 1.
L live wire, N zero line, E safety line, single-phase three pole sockets of CHZO, 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. 2.
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. 3.
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. 4.
L2 live wire, N2 zero line, E2 safety line, CHT2 single-phase tripolar plug, K2 protection selector switch off zero, SB3-SB4 test button, LED1-LED3 light-emitting diode, D1-D2 diode, C1-C6 capacitor in Fig. 5.
Embodiment
Fig. 1, Fig. 2 is single-phase three utmost point power distributor profile floor map of protection off zero and the self check of ground connection general-purpose, single-phase three utmost point power distributors of protection off zero and the self check of ground connection general-purpose 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 protection off zero and single-phase three utmost point power distributors of ground connection general-purpose self check or on first single-phase three pole sockets, its inside is provided with the protection off zero of resistance voltage-dropping type and ground connection general-purpose self-checking plug seat circuit or the energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat circuit, form single-phase three utmost point power distributors of protection off zero and the self check of ground connection general-purpose, power distributor master switch KO is installed on it, when single-phase tripolar plug CH inserts after user's single-phase three pole sockets, if the correct position of bright explanation live wire L1 of indicator light SD3 while 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. 3, Fig. 4 is the protection off zero of resistance voltage-dropping type and general-purpose self-checking plug seat circuit theory diagrams, the protection off zero of resistance voltage-dropping type and ground connection general-purpose self-checking plug seat are, on slotting Xiao's plate of single-phase three utmost point disjunctor connector assemblies or single-phase tripolar plug or single-phase three pole sockets or a plurality of single-phase three utmost point jacks, protection selector switch off zero and safe self check indicator light and test button are installed, 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 connecting and is connected across between zero line N1 and safety line E1, operation principle is that single-phase tripolar plug CHT1 inserts single-phase three pole sockets of user, when 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, zero line N1 electric current surpasses live wire L1 electric current and is also equivalent to electric leakage, 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 check indicator light and test button are installed respectively, according to indicator light, bright whether position is correct separately with secretly judging safety line E1 and zero line N1 and live wire L1, by test button, further confirm again.If the correct position of bright explanation live wire L1 of indicator light SD3 while between indicator light SD2 and live wire L1 and zero line N1 between safety line E1 and live wire L1; if at this moment live wire L1 or zero line N1 have electric leakage user's earth leakage protective also can trip immediately, effectively protect the person and power consumption equipment safety.Embodiment is with reference to Fig. 3 and Fig. 4, 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.Operation principle explanation: indicator light SD1, indicator light SD2 and indicator light SD3 are used 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, button SB1 is leak(age) test button, 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. 5 is the energy-saving protection off zero of capacitor step-down and general-purpose self-checking plug seat circuit theory diagrams, the energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat are that capacitance decompression can economize on electricity, particular circuit configurations is the positive pole that in single-phase tripolar plug CHT2, safety line E2 connects diode D1 simultaneously, the positive pole of diode D2, LED 1 negative pole, LED 2 negative poles, protection selector switch K2 off zero and test button SB3, diode D1 negative pole connecting luminous diode LED1 positive pole and capacitor C1, the protection selector switch K2 other end off zero connects capacitor C2, the capacitor C1 other end is connected zero line N2 together with the capacitor C2 other end, diode D2 negative pole connecting luminous diode LED2 positive pole and capacitor C3, the test button SB3 other end connects capacitor C4, the capacitor C3 other end is connected live wire L2 together with the capacitor C4 other end, zero line N2 connects the positive pole of diode D3, LED 3 negative poles and test button SB4, diode D3 negative pole connecting luminous diode LED3 positive pole and capacitor C5, the test button SB4 other end connects capacitor C6, the capacitor C5 other end is connected live wire L2 together with the capacitor C6 other end, .Operation principle is identical with Fig. 3, Fig. 4; illustrate: current related with by light-emitting diode and diode of the selection of condenser capacity; 2 to 3 milliamperes, the electric current of the bright state of light-emitting diode; use capacitor step-down can economize on electricity more than 90% than resistance step-down; although the electric current by test button need to be greater than 30 milliamperes; due to conduction time just in a flash; consider that cost is still optional with resistance; during normal power supply, between safety line and zero line, there is no voltage or have atomic voltage, the capacitor that protection off zero connects also can be selected resistance.
Claims (3)
1. single-phase three utmost point power distributors of protection off zero and the self check of ground connection general-purpose, it is characterized in that installing protection selector switch K off zero and indicator light SD and test button SB in the single-phase tripolar plug of protection off zero and single-phase three utmost point power distributors of ground connection general-purpose self check or on first single-phase three pole sockets, its inside is provided with the protection off zero of resistance voltage-dropping type and ground connection general-purpose self-checking plug seat circuit or the energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat circuit, form single-phase three utmost point power distributors of protection off zero and the self check of ground connection general-purpose, power distributor master switch K0 is installed on it, when single-phase tripolar plug CHT inserts after user's single-phase three pole sockets, if the correct position of bright explanation live wire L1 of indicator light SD3 while 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.
2. single-phase three utmost point power distributors of protection off zero and the self check of ground connection general-purpose according to claim 1, comprise the protection off zero of resistance voltage-dropping type and ground connection general-purpose self-checking plug seat circuit, it is characterized in that, on the single-phase tripolar plug of protection off zero and single-phase three utmost point disjunctor power distributors of ground connection general-purpose self check or single-phase three pole sockets, the protection off zero of resistance voltage-dropping type and ground connection general-purpose self-checking plug seat circuit are installed, 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 connecting 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 check indicator light and test button are installed respectively, 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 are used light-emitting diode or neon lamp.
3. single-phase three utmost point power distributors of protection off zero and the self check of ground connection general-purpose according to claim 1, comprise the energy-saving protection off zero of capacitor step-down and ground connection general-purpose self-checking plug seat circuit, it is characterized in that installing the energy-saving protection off zero of capacitance decompression and ground connection general-purpose self-checking plug seat circuit on protection off zero and single-phase three utmost point power distributors of ground connection general-purpose self check, particular circuit configurations is the positive pole that in single-phase tripolar plug CHT2, safety line E2 connects diode D1 simultaneously, the positive pole of diode D2, LED 1 negative pole, LED 2 negative poles, protection selector switch K2 off zero and test button SB3, diode D1 negative pole connecting luminous diode LED1 positive pole and capacitor C1, the protection selector switch K2 other end off zero connects capacitor C2, the capacitor C1 other end is connected zero line N2 together with the capacitor C2 other end, diode D2 negative pole connecting luminous diode LED2 positive pole and capacitor C3, the test button SB3 other end connects capacitor C4, the capacitor C3 other end is connected live wire L2 together with the capacitor C4 other end, zero line N2 connects the positive pole of diode D3, LED 3 negative poles and test button SB4, diode D3 negative pole connecting luminous diode LED3 positive pole and capacitor C5, the test button SB4 other end connects capacitor C6, the capacitor C5 other end is connected live wire L2 together with the capacitor C6 other end, current related with by light-emitting diode and diode of the selection of condenser capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420247604.1U CN203813140U (en) | 2013-05-16 | 2013-05-16 | Faulted neutral line protection and grounding universal self-checking single-phase three-pole power strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420247604.1U CN203813140U (en) | 2013-05-16 | 2013-05-16 | Faulted neutral line protection and grounding universal self-checking single-phase three-pole power strip |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320288849.4U Division 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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| CN203813140U true CN203813140U (en) | 2014-09-03 |
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| CN201420247604.1U Expired - Fee Related CN203813140U (en) | 2013-05-16 | 2013-05-16 | Faulted neutral line protection and grounding universal self-checking single-phase three-pole power strip |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502780A (en) * | 2014-12-27 | 2015-04-08 | 国网宁夏电力公司固原供电公司 | Indoor electric line fault detection device |
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2013
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502780A (en) * | 2014-12-27 | 2015-04-08 | 国网宁夏电力公司固原供电公司 | Indoor electric line fault detection device |
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Granted publication date: 20140903 Termination date: 20160516 |