CN207926160U - A kind of three-phase electricity high security broken neutral line protective device - Google Patents
A kind of three-phase electricity high security broken neutral line protective device Download PDFInfo
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- CN207926160U CN207926160U CN201820379739.1U CN201820379739U CN207926160U CN 207926160 U CN207926160 U CN 207926160U CN 201820379739 U CN201820379739 U CN 201820379739U CN 207926160 U CN207926160 U CN 207926160U
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- protective device
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Abstract
The utility model discloses a kind of three-phase electricity high security broken neutral line protective devices, the protective device includes burn out detection module, control module, power supply converts output module, protection switch, the burn out detection module is connect with each phase line and the neutral conductor respectively, to monitor the break-make of each phase line and the neutral conductor, the control module and burn out detection module, power supply converts output module connection, phase line switching is carried out to receive the signal of burn out detection module and control power supply conversion output module, the power supply conversion output module provides working power to select arbitrary two-phase power supply output to be switched for protection.The utility model can monitor the neutral conductor or/and any phase line broken string and starting protection switch is powered to disconnect to protect electrical equipment, have both disconnected N and default-phase protection function, have high safety.
Description
Technical field
The utility model is related to a kind of electric security protector equipment, are protected more particularly to a kind of three-phase electricity broken neutral line
Device.
Background technology
Broken neutral line protective device is the important safety guard of power supply system, and current three-phase electrical neutral axis is disconnected
Line protective device, which is usually connect with arbitrary two phase line in three-phase electricity, is used as driving power, i.e. when detecting broken neutral line
Electrical equipment is protected by disconnecting protection switch.But if there is arbitrary two phase line of access broken neutral line protective device
In any phase line and the neutral conductor break simultaneously situation, then can lead to not provide driving power for protection switch, so as to cause in
The failure of property line broken wire protecting equipment, seriously affects electrical safety.
Invention content
The technical problem to be solved by the utility model is to provide a kind of protections of three-phase electricity high security broken neutral line to fill
It sets, the broken string of any phase line and the neutral conductor, and effectively driving protection switch work can be monitored in real time, there is high safety
Property.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution：
A kind of three-phase electricity high security broken neutral line protective device, including burn out detection module, control module, power supply turn
Change output module, protection switch, the burn out detection module connect with each phase line and the neutral conductor respectively, to monitor each phase line with
The break-make of the neutral conductor, the control module is connect with burn out detection module, power supply conversion output module, to receive burn out detection
The signal of module simultaneously controls power supply conversion output module progress phase line switching, the power input of the power supply conversion output module
It connect with each phase line, power output end and protection switch connection, is provided to select the output of arbitrary two-phase power supply to be switched for protection
Working power.A kind of three-phase electricity high security broken neutral line protective device of the utility model is each by burn out detection module monitors
The break-make of phase line and the neutral conductor, and receive processing break-make information number by control module and control power supply conversion output module and carry out
Phase line switching for protection switch to provide two-phase working power, to reach the safeguard protection to electric wiring.
Preferably, the protection switch operating voltage is 220V, the selection of protection switch can be convenient for.
Preferably, being provided with transformer between the protection switch and power supply conversion output module, can be switched according to protection
Operating voltage transformation processing is carried out to the power supply of 380V.
Preferably, the protection switch is breaker or contactor, can select to be applicable according to application environment.
Preferably, the power supply conversion output module is additionally provided with alarm signal output ends, access alarm can be facilitated to set
It is standby.
Compared with prior art, a kind of beneficial effect of three-phase electricity high security broken neutral line protective device of the utility model
Fruit：The neutral conductor or/and any phase line broken string can be monitored by converting output module by burn out detection module, control module, power supply
And starting protection switch is powered to disconnect to protect electrical equipment, and disconnected N and default-phase protection function are had both, and has high safety
Property.
Description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of schematic diagram of three-phase electricity high security broken neutral line protective device of the utility model.
Specific implementation mode
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification unless specifically stated can be equivalent or with similar purpose by other
Alternative features are replaced.That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics
.
As shown in Figure 1, a kind of three-phase electricity high security broken neutral line protective device of the utility model, including burn out detection
Module, control module, power supply conversion output module, protection switch, the burn out detection module respectively with each phase line and the neutral conductor
Connection, to monitor the break-make of each phase line and the neutral conductor, the control module converts output module with burn out detection module, power supply
Connection carries out phase line switching to receive the signal of burn out detection module and control power supply conversion output module, and the power supply turns
The power input for changing output module connect with each phase line, power output end and protection switch connection, to select arbitrary two-phase
Power supply output provides working power for protection switch.A kind of three-phase electricity high security broken neutral line protection dress of the utility model
Set, when detect input power break A phases when, control module drives relay J2 conducting output two-phase 380V working powers to start
Protection switch work, when detect input power break B phases when, control module drives relay J3 conducting output two-phase 380V work
Power supply switchs work with starting protection, when detect input power break C phases when, control module drives relay J1 conducting output two
Phase 380V working powers switch work with starting protection, and when detecting input power only disconnected N phases, control module drives relay
Device J1 or J2 or J3 conducting output two-phase 380V working powers switch work with starting protection.
As shown in Figure 1, in a kind of three-phase electricity high security broken neutral line protective device of the utility model, the protection is opened
Pass operating voltage is 220V, and transformer is provided between the protection switch and power supply conversion output module, and the protection switch is
Breaker or contactor, the power supply conversion output module are additionally provided with alarm signal output ends.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, every the present invention's
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within spirit and principle.
Claims (5)
1. a kind of three-phase electricity high security broken neutral line protective device, it is characterised in that：Including burn out detection module, control mould
Block, power supply conversion output module, protection switch, the burn out detection module is connect with each phase line and the neutral conductor respectively, to supervise
Each phase line and the break-make of the neutral conductor are surveyed, the control module is connect with burn out detection module, power supply conversion output module, to connect
It receives the signal of burn out detection module and controls power supply conversion output module and carry out phase line switching, the power supply conversion output module
Power input is connect with each phase line, power output end and protection switch connect, and is guarantor to select arbitrary two-phase power supply output
Shield switch provides working power.
2. a kind of three-phase electricity high security broken neutral line protective device according to claim 1, it is characterised in that：It is described
Protection switch operating voltage is 220V.
3. a kind of three-phase electricity high security broken neutral line protective device according to claim 1 or 2, it is characterised in that：
It is provided with transformer between the protection switch and power supply conversion output module.
4. a kind of three-phase electricity high security broken neutral line protective device according to claim 1 or 2, it is characterised in that：
The protection switch is breaker or contactor.
5. a kind of three-phase electricity high security broken neutral line protective device according to claim 1, it is characterised in that：It is described
Power supply conversion output module is additionally provided with alarm signal output ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820379739.1U CN207926160U (en) | 2018-03-20 | 2018-03-20 | A kind of three-phase electricity high security broken neutral line protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820379739.1U CN207926160U (en) | 2018-03-20 | 2018-03-20 | A kind of three-phase electricity high security broken neutral line protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207926160U true CN207926160U (en) | 2018-09-28 |
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ID=63595769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820379739.1U Active CN207926160U (en) | 2018-03-20 | 2018-03-20 | A kind of three-phase electricity high security broken neutral line protective device |
Country Status (1)
| Country | Link |
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| CN (1) | CN207926160U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281939A (en) * | 2018-03-20 | 2018-07-13 | 四川电之盾安全技术有限公司 | Three-phase electricity high security broken neutral line protective device |
-
2018
- 2018-03-20 CN CN201820379739.1U patent/CN207926160U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281939A (en) * | 2018-03-20 | 2018-07-13 | 四川电之盾安全技术有限公司 | Three-phase electricity high security broken neutral line protective device |
| CN108281939B (en) * | 2018-03-20 | 2024-02-09 | 四川电之盾安全技术有限公司 | Neutral line breakage protection device with high safety for three-phase electricity |
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