CN104917162A - Street light power supply system with indirect protection function - Google Patents
Street light power supply system with indirect protection function Download PDFInfo
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- CN104917162A CN104917162A CN201510351203.XA CN201510351203A CN104917162A CN 104917162 A CN104917162 A CN 104917162A CN 201510351203 A CN201510351203 A CN 201510351203A CN 104917162 A CN104917162 A CN 104917162A
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- power supply
- control switch
- supply system
- lamp power
- residual current
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Abstract
The invention relates to a street light power supply system with an indirect protection function. The street light power supply system comprises alternating current commercial power, a power supply, a control switch, a residual current protector, an AC (alternating current) equipotential connection circuit and a plurality of street lights. The alternating current commercial power, the power supply and the control switch are connected in sequence, and the control switch is connected with the plurality of street lights; the power supply is grounded; the connection ends of the power supply and the control switch are connected with the residual current protector, the AC equipotential connection circuit is embedded in the residual current protector, and the ground base of each street light is grounded. Due to the adoption of the technical scheme, personal safety accidents caused by grounding failure of the street light power supply system can be effectively prevented, and accidents caused by stray current due to repeated grounding of a neutral line also can be prevented.
Description
Technical field
The present invention relates to a kind of safeguard function street lamp power supply, road lamp power supply system indirectly.
Background technology
During street lamp power supply, road lamp power supply system generation earth fault; because comprising two earth resistances in fault loop; i.e. power supply place earth electrode and street lamp foundation grounding pole on the spot; Fault loop impedance is larger; fault current is less; overcurrent protection is failure to actuate, and earth fault protection can not reliable trip, and electric power system produces the personal safety accident that earth fault will cause.Interrupt for taking precautions against the neutral line in existing street lamp power supply, road lamp power supply system, neutral line iterative earthing, easily produces stray electrical current and causes accident simultaneously.
Summary of the invention
Object of the present invention, exactly in order to solve above-mentioned prior art Problems existing, and a kind of safeguard function street lamp power supply, road lamp power supply system is indirectly provided, indirectly can protect the earth fault of street lamp power supply, road lamp power supply system, effectively can prevent street lamp power supply, road lamp power supply system from producing the personal safety accident of earth fault initiation, also can prevent because neutral line iterative earthing produces stray electrical current and cause accident.
The technical scheme realizing above-mentioned purpose is: provide a kind of safeguard function street lamp power supply, road lamp power supply system indirectly, comprise electric main, power supply, control switch, residual current operated protective device and, AC equipotential link-up circuit and some street lamps, wherein:
Described electric main, described power supply are connected successively with described control switch, and described control switch connects described some street lamps;
Described power supply ground connection;
The end that connects of described power supply and described control switch is connected with described residual current operated protective device (RCD, Residual Current Devices), is embedded with described AC equipotential link-up circuit in described residual current operated protective device;
The foundation grounding on the spot of each described street lamp.
The present invention's indirect safeguard function street lamp power supply, road lamp power supply system; power supply ground connection and street lamp foundation grounding on the spot; be provided with residual current operated protective device and AC equipotential link-up circuit; indirectly can protect the earth fault of street lamp power supply, road lamp power supply system; effectively can prevent street lamp power supply, road lamp power supply system from producing the personal safety accident of earth fault initiation, also can prevent because neutral line iterative earthing produces stray electrical current and cause accident.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of indirect safeguard function street lamp power supply, road lamp power supply system of the present invention.
Embodiment
In order to make those skilled in the art can understand technical scheme of the present invention better, below in conjunction with accompanying drawing, the invention will be further described.
Refer to Fig. 1, embodiments of the invention, a kind of safeguard function street lamp power supply, road lamp power supply system indirectly, comprises electric main 1, power supply 2, control switch 3, residual current operated protective device 4, AC equipotential link-up circuit 5 and some street lamps 6.Electric main 1, power supply 2, control switch 3 are connected successively, and control switch 3 connects some street lamps 6; Power supply 2 ground connection; Power supply 2 is connected with residual current operated protective device 4 with the end that connects of control switch 3, is embedded with AC equipotential link-up circuit 5 in residual current operated protective device 4; The foundation grounding on the spot of each street lamp 6.
Indirect safeguard function street lamp power supply, road lamp power supply system of the present invention; electric main 1 is by power supply 2; for some street lamps 6 are powered; in whole street lamp power supply, road lamp power supply system; power supply 2 place and street lamp 6 are with regard to ground foundation place ground connection; be provided with residual current operated protective device 4 and AC equipotential link-up circuit 5, can prevent because neutral line iterative earthing produces stray electrical current and cause accident.Power supply 2 and control switch 3 connect to holding and are connected with residual current operated protective device 4, AC equipotential link-up circuit 5 is embedded with in residual current operated protective device 4, the setting value of residual current operated protective device 4, calculate by circuit length and protect impedance and earth fault current Id mutually, and press 1/1.3 times of Id as residual current operated protective device 4 operating current setting value, residual current operated protective device 4 is when street lamp power supply, road lamp power supply system generation earth fault, can reliable trip, effectively prevent street lamp power supply, road lamp power supply system from producing the personal safety accident of earth fault initiation, also can prevent because neutral line iterative earthing produces stray electrical current and cause accident.
In sum, street lamp power supply, road lamp power supply system of the present invention, indirectly can protect the earth fault of street lamp power supply, road lamp power supply system, effectively prevent street lamp power supply, road lamp power supply system from producing the personal safety accident of earth fault initiation, can prevent because neutral line iterative earthing produces stray electrical current and cause accident.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, various conversion or modification can also be made, therefore all equivalent technical schemes also should belong to category of the present invention, should be limited by each claim.
Claims (1)
1. an indirect safeguard function street lamp power supply, road lamp power supply system, is characterized in that, comprises electric main, power supply, control switch, residual current operated protective device, AC equipotential link-up circuit and some street lamps, wherein:
Described electric main, described power supply are connected successively with described control switch, and described control switch connects described some street lamps;
Described power supply ground connection;
Described power supply is connected with described residual current operated protective device with the end that connects of described control switch, is embedded with described AC equipotential link-up circuit in described residual current operated protective device;
The foundation grounding on the spot of each described street lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351203.XA CN104917162A (en) | 2015-06-23 | 2015-06-23 | Street light power supply system with indirect protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351203.XA CN104917162A (en) | 2015-06-23 | 2015-06-23 | Street light power supply system with indirect protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104917162A true CN104917162A (en) | 2015-09-16 |
Family
ID=54085984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510351203.XA Pending CN104917162A (en) | 2015-06-23 | 2015-06-23 | Street light power supply system with indirect protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104917162A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1716723A (en) * | 2004-03-16 | 2006-01-04 | 魏晋祥 | Leakage potential type action protector |
| US20110075304A1 (en) * | 2009-09-30 | 2011-03-31 | Chevron U.S.A. Inc. | System and method for polyphase ground-fault circuit-interrupters |
-
2015
- 2015-06-23 CN CN201510351203.XA patent/CN104917162A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1716723A (en) * | 2004-03-16 | 2006-01-04 | 魏晋祥 | Leakage potential type action protector |
| US20110075304A1 (en) * | 2009-09-30 | 2011-03-31 | Chevron U.S.A. Inc. | System and method for polyphase ground-fault circuit-interrupters |
Non-Patent Citations (3)
| Title |
|---|
| 严元生: "防止路灯漏电伤人的探讨", 《中国电力教育》 * |
| 王厚余: "TT系统接地和防电击简析", 《建筑电气》 * |
| 高能等: "配电网接地保护与等电位联结", 《湖北电力》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150916 |