CN205681098U - Three pole earth leakage protective devices - Google Patents

Three pole earth leakage protective devices Download PDF

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Publication number
CN205681098U
CN205681098U CN201620552777.3U CN201620552777U CN205681098U CN 205681098 U CN205681098 U CN 205681098U CN 201620552777 U CN201620552777 U CN 201620552777U CN 205681098 U CN205681098 U CN 205681098U
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China
Prior art keywords
ground wire
voltage
protective devices
ground
earth leakage
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CN201620552777.3U
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Chinese (zh)
Inventor
钱加灿
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Yuyao Jiarong Electronic Appliance Co Ltd
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Yuyao Jiarong Electronic Appliance Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/325—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors involving voltage comparison
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

This utility model discloses a kind of three pole earth leakage protective devices, relates to technical field of electricity, it is possible to automatically adapt to various power utilization environments, it is not necessary to the complicated debugging of professional, greatly reduces operation easier.Described three pole earth leakage protective devices include: ground wire detection of electrical leakage portion, are used for detecting the voltage between ground wire leakage current, and/or zero line ground wire；Logical analysis portion, is connected with described ground wire detection of electrical leakage portion, is used for determining whether described ground wire leakage current is more than predetermined current threshold, and whether the voltage between zero line ground wire is more than predetermined voltage threshold；Dropout control portion; it is connected with described logical analysis portion; for determining that in described logical analysis portion described ground wire leakage current is more than described predetermined current threshold; and/or the voltage between zero line ground wire is more than in the case of described predetermined voltage threshold, controls the load power down that described three pole earth leakage protective devices are corresponding.

Description

Three pole earth leakage protective devices
Technical field
This utility model relates to a kind of electric safety device, particularly to a kind of three pole earth leakage protective devices.
Background technology
The defencive function of three pole earth leakage protective devices, refers on the premise of power supply is normal, when ground wire abnormal belt electricity or During load electric leakage, it is possible to cut off load supplying loop.
Existing three pole earth leakage protective devices are divided into voltage-type and current mode, can pass through voltage detection and gallon respectively Carry out earth leakage protective.When needing change to carry out conversion in type under different power utilization environments, need the specialty behaviour of professional Making again to change setting, operation is loaded down with trivial details.
Utility model content
The purpose of this utility model seeks to overcome disadvantages mentioned above, it is desirable to provide a kind of three pole earth leakage protective devices.
On the one hand, this utility model provides a kind of three pole earth leakage protective devices, including: ground wire detection of electrical leakage portion, it is used for detecting Ground wire leakage current, and/or the voltage between neutral-ground；
Logical analysis portion, is connected with described ground wire detection of electrical leakage portion, is used for determining that whether ground wire leakage current is more than presetting Current threshold, whether the voltage between neutral-ground is more than predetermined voltage threshold；
Dropout control portion, is connected with described logical analysis portion, for determining that described ground wire leaks electricity in described logical analysis portion Electric current is more than described predetermined current threshold, and/or the voltage between neutral-ground is more than the situation of described predetermined voltage threshold Under, control the load power down that described three pole earth leakage protective devices are corresponding.
Further, described detection of electrical leakage portion includes:
Ground wire electrified detection module, is connected with described logical analysis portion, for detecting the voltage between ground-zero line, and will Testing result exports to described logical analysis portion；
Ground line current detection module, is connected with described logical analysis portion, for detecting the electric current on ground wire, and detection is tied Fruit output is to described logical analysis portion.
Further, in described logical analysis portion, described dropout control portion is specifically for determining that described ground wire leakage current is more than Voltage between described predetermined current threshold, and/or described neutral-ground, more than in the case of described predetermined voltage threshold, is controlled Electromagnetic trip coil processed is threaded off, so that the load power down that described three pole earth leakage protective devices are corresponding.
Further, described dropout control portion is also associated with high-temperature protection circuit, and described high-temperature protection circuit is at pin Temperature, higher than in the case of predetermined threshold value, controls electromagnetic trip coil and threads off, so that corresponding the bearing of described three pole earth leakage protective devices Carry power-off.
The three pole earth leakage protective devices that embodiment of the present utility model provides, it is possible to simultaneously detect three pole earth leakage protective device power supplys Leakage current on line and electrical leakage voltage, at described leakage current more than described predetermined current threshold, and/or described electrical leakage voltage In the case of described predetermined voltage threshold, it is possible to make the load power down that three pole earth leakage protective devices are corresponding, therefore, it is possible to adapt to Various power utilization environments, it is not necessary to the complicated debugging of professional, greatly reduce operation easier.
Accompanying drawing explanation
A kind of structural representation of the three pole earth leakage protective devices that Fig. 1 provides for this utility model embodiment；
A kind of detailed construction schematic diagram of the three pole earth leakage protective devices that Fig. 2 provides for this utility model embodiment；
Another the detailed construction schematic diagram of the three pole earth leakage protective devices that Fig. 3 provides for this utility model embodiment；
Fig. 4 is a kind of flow chart of the method for work of three pole earth leakage protective devices of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, detailed description of the invention of the present utility model is described in further detail.Below Embodiment is used for illustrating this utility model, but is not limited to scope of the present utility model.
As it is shown in figure 1, embodiment of the present utility model provides a kind of three pole earth leakage protective devices, including:
Ground wire detection of electrical leakage portion 11, is used for detecting ground wire leakage current, and/or the voltage between neutral-ground；
Logical analysis portion 12, is connected with ground wire detection of electrical leakage portion 11, is used for determining whether described ground wire leakage current is more than Predetermined current threshold, whether the voltage between described neutral-ground is more than predetermined voltage threshold；
Dropout control portion 13, is connected with logical analysis portion 12, for determining described ground wire electric leakage electricity in logical analysis portion 12 Stream is more than the situation of described predetermined voltage threshold more than the voltage between described predetermined current threshold, and/or described neutral-ground Under, control the load power down that described three pole earth leakage protective devices are corresponding.
The three pole earth leakage protective devices that embodiment of the present utility model provides, it is possible to simultaneously detect three pole earth leakage protective device power supplys The voltage between ground wire leakage current and neutral-ground on line, at described ground wire leakage current more than described predetermined current threshold Value, and/or the voltage between described neutral-ground is more than in the case of described predetermined voltage threshold, it is possible to make three pole electric leakages protect Protect the load power down that device is corresponding, therefore, it is possible to adapt to various power utilization environment, it is not necessary to the complicated debugging of professional, greatly reduce Operation easier.
Specifically, ground wire detection of electrical leakage portion 11 may include that
Ground wire electrified detection module, is connected with logical analysis portion 12, for detecting the voltage between ground-zero line, and will inspection Survey result to export to logical analysis portion 12；
Ground line current detection module, is connected with logical analysis portion 12, for detecting the electric current on ground wire, and by testing result Output is to logical analysis portion 12.
Optionally, ground wire electrified detection module can be the voltage check device being connected across between ground wire and zero line, permissible Voltage difference between monitoring ground wire and zero line in real time.And ground line current detection module can include the electric current close to each other with ground wire Induction coil, the in real time curent change on sensing ground wire.
Concrete, logical analysis portion 12 can receive respectively voltage detecting result that ground wire electrified detection module sends and The current detecting result that ground line current detection module sends, and determine that whether the voltage between corresponding neutral-ground is more than pre- If whether voltage threshold, corresponding ground wire leakage current be more than predetermined current threshold.
Optionally, dropout control portion 13 is particularly used in and determines that in logical analysis portion 12 described ground wire leakage current is more than institute State voltage between predetermined current threshold, and/or described neutral-ground more than in the case of described predetermined voltage threshold, control Electromagnetic trip coil is threaded off, so that the load power down that described three pole earth leakage protective devices are corresponding.
Wherein, predetermined current threshold and predetermined voltage threshold can require according to different electricity consumptions and use scene to carry out spirit Living and configure, such as, in an embodiment of the present utility model, predetermined voltage threshold is configured to 36 volts, predetermined current threshold Value is configured to 200 milliamperes, then the voltage between the neutral-ground detected is more than 36 volts, and/or the ground detected Line leakage current is more than 200 MAHs, controls electromagnetic trip coil and threads off, so that the load that described three pole earth leakage protective devices are corresponding Power-off.Certainly, in other embodiments of the present utility model, voltage threshold and current threshold can be arranged according to practical situation, This is not limited by embodiment of the present utility model.
Further, dropout control portion 13 is also associated with high-temperature protection circuit, and this high-temperature protection circuit can be used at circuit The pin temperature of the chip etc. on plate, higher than in the case of predetermined threshold value, controls electromagnetic trip coil and threads off, so that described three poles The load power down that earth leakage protective device is corresponding.
The three pole earth leakage protective devices provided this utility model below by specific embodiment are described in detail.
As shown in Figures 2 and 3, in the present embodiment, detection of electrical leakage portion specifically includes ground wire electrified detection module and ground wire electricity Stream detection module, wherein, ground wire electrified detection module is specially connected across the voltage check device between ground wire and zero line, ground wire Current detection module is specially the electric current induction coil close to each other with ground wire, can sense the curent change on ground wire in real time. Wherein, L represents that live wire, N represent that zero line, E represent ground wire.
Voltage signal that ground wire electrified detection module detects and the current signal that ground line current detection module detects, The voltage/current in logical analysis portion can be sent to by ground wire voltage trigger module and ground line current trigger module respectively patrol Collect and analyze module.When voltage/current logic analysis module determines that the ground wire leakage current detected is more than predetermined current threshold, And/or the voltage between neutral-ground is more than in the case of predetermined voltage threshold, the electric leakage in dropout control portion is threaded off and is controlled mould Block i.e. can control electromagnetic trip coil and thread off, so that the load power down that described three pole earth leakage protective devices are corresponding.
Further, electric leakage dropout control module also can connect and have zero sequence detection of electrical leakage module, this zero sequence detection of electrical leakage Module can be used for detecting zero-live wire drain conditions, and testing result is sent to dropout control module of leaking electricity, when detecting zero- When having leakage current between live wire, electromagnetic trip coil can be made to thread off so that load power down by this electric leakage dropout control module.
Optionally, in this enforcement, three pole earth leakage protective devices also can arrange condition indication circuit and buzzer, state indicates Circuit is for indicating the running status of current whole protector, and including the display of fault, buzzer plays alarm function.
Accordingly, as shown in Figure 4, embodiment of the present utility model also provides for the work side of a kind of three pole earth leakage protective devices Method, including:
S21, detects the voltage between ground wire leakage current and/or the neutral-ground on three pole earth leakage protective device power lines；
S22, determines that whether described ground wire leakage current is more than predetermined current threshold, the voltage between described neutral-ground Whether more than predetermined voltage threshold；
S23, determines that in described logical analysis portion described ground wire leakage current is more than described predetermined current threshold, and/or institute State voltage between neutral-ground more than in the case of described predetermined voltage threshold, control described three pole earth leakage protective devices corresponding Load power down.
The method of work of the three pole earth leakage protective devices that embodiment of the present utility model provides, it is possible to simultaneously detect three pole electric leakages The voltage between ground wire leakage current and neutral-ground on protector power line, at described ground wire leakage current more than described Voltage between predetermined current threshold, and/or described neutral-ground is more than in the case of described predetermined voltage threshold, it is possible to make The load power down that three pole earth leakage protective devices are corresponding, therefore, it is possible to automatically adapt to various power utilization environments, it is not necessary to the complexity of professional Debugging, greatly reduces operation easier.
Optionally, in the step s 21, detect the ground wire leakage current on three pole earth leakage protective device power lines and/or zero line- Voltage between ground wire can include detecting the voltage between ground-zero line and the electric current on ground wire respectively.Then in step S22 Whether the voltage between definitely-zero line is more than predetermined voltage threshold, and whether the electric current on ground wire is more than predetermined current threshold, as Really both determination results are all yes, then control the load power down that three pole earth leakage protective devices are corresponding in step S23.Optionally, Can thread off by controlling electromagnetic trip coil, so that the load power down that described three pole earth leakage protective devices are corresponding.
Further, the method for work of the three pole earth leakage protective devices that this utility model embodiment provides may also include that and inserting Foot temperature, higher than in the case of predetermined threshold value, controls electromagnetic trip coil and threads off, so that described three pole earth leakage protective devices are corresponding Load power down.
In sum, above-mentioned embodiment is not restricted embodiment of the present utility model, the technology of all this areas Modification that personnel are carried out on the basis of flesh and blood of the present utility model or equivalent deformation, all in skill of the present utility model Art category.

Claims (4)

1. a pole earth leakage protective device, it is characterised in that including:
Ground wire detection of electrical leakage portion, is used for detecting ground wire leakage current, and/or the voltage between neutral-ground；
Logical analysis portion, is connected with described ground wire detection of electrical leakage portion, is used for determining that whether ground wire leakage current is more than predetermined current Threshold value, whether the voltage between neutral-ground is more than predetermined voltage threshold；
Dropout control portion, is connected with described logical analysis portion, for determining described ground wire leakage current in described logical analysis portion More than described predetermined current threshold, and/or the voltage between neutral-ground is more than in the case of described predetermined voltage threshold, controls Make the load power down that described three pole earth leakage protective devices are corresponding.
Three pole earth leakage protective devices the most as claimed in claim 1, it is characterised in that described detection of electrical leakage portion includes:
Ground wire electrified detection module, is connected with described logical analysis portion, for detecting the voltage between ground-zero line, and will detection Result exports to described logical analysis portion；
Ground line current detection module, is connected with described logical analysis portion, for detecting the electric current on ground wire and testing result is defeated Go out to described logical analysis portion.
Three pole earth leakage protective devices the most as claimed in claim 1, it is characterised in that described dropout control portion is specifically for described Logical analysis portion determines that described ground wire leakage current is more than the electricity between described predetermined current threshold, and/or described neutral-ground Pressure, more than in the case of described predetermined voltage threshold, controls electromagnetic trip coil and threads off, so that described three pole earth leakage protective devices pair The load power down answered.
Three pole earth leakage protective devices the most as claimed any one in claims 1 to 3, it is characterised in that described dropout control portion is also Connecting and have high-temperature protection circuit, described high-temperature protection circuit, in the case of in pin temperature higher than predetermined threshold value, controls electricity Magnetic tripping coil is threaded off, so that the load power down that described three pole earth leakage protective devices are corresponding.
CN201620552777.3U 2015-09-28 2016-06-08 Three pole earth leakage protective devices Active CN205681098U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510626742X 2015-09-28
CN201510626742.XA CN105207172A (en) 2015-09-28 2015-09-28 Water outlet power failure intelligent electric leakage protector and control method thereof

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Application Number Title Priority Date Filing Date
CN201510626742.XA Pending CN105207172A (en) 2015-09-28 2015-09-28 Water outlet power failure intelligent electric leakage protector and control method thereof
CN201620555405.6U Active CN205666608U (en) 2015-09-28 2016-06-08 Go out intelligent earth -leakage protector of water outage
CN201620552777.3U Active CN205681098U (en) 2015-09-28 2016-06-08 Three pole earth leakage protective devices
CN201610404957.1A Pending CN105914707A (en) 2015-09-28 2016-06-08 Water-outflow power-failure intelligent electric leakage protector and control method thereof
CN201610402183.9A Pending CN105896465A (en) 2015-09-28 2016-06-08 Three-pole leakage protector and working method thereof

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CN201510626742.XA Pending CN105207172A (en) 2015-09-28 2015-09-28 Water outlet power failure intelligent electric leakage protector and control method thereof
CN201620555405.6U Active CN205666608U (en) 2015-09-28 2016-06-08 Go out intelligent earth -leakage protector of water outage

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Application Number Title Priority Date Filing Date
CN201610404957.1A Pending CN105914707A (en) 2015-09-28 2016-06-08 Water-outflow power-failure intelligent electric leakage protector and control method thereof
CN201610402183.9A Pending CN105896465A (en) 2015-09-28 2016-06-08 Three-pole leakage protector and working method thereof

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CN106058808B (en) * 2016-07-14 2019-09-17 余姚市嘉荣电子电器有限公司 Controllable type water outlet power-off earth leakage protective device
CN106253217A (en) * 2016-09-07 2016-12-21 余姚市嘉荣电子电器有限公司 A kind of earth leakage protective device and method of work thereof
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Publication number Publication date
CN105207172A (en) 2015-12-30
CN105896465A (en) 2016-08-24
CN105914707A (en) 2016-08-31
CN205666608U (en) 2016-10-26

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