CN202758012U - Failure indication circuit of high-power heating system - Google Patents
Failure indication circuit of high-power heating system Download PDFInfo
- Publication number
- CN202758012U CN202758012U CN 201220314840 CN201220314840U CN202758012U CN 202758012 U CN202758012 U CN 202758012U CN 201220314840 CN201220314840 CN 201220314840 CN 201220314840 U CN201220314840 U CN 201220314840U CN 202758012 U CN202758012 U CN 202758012U
- Authority
- CN
- China
- Prior art keywords
- power
- utmost point
- current transformer
- load
- heating system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to a failure indication circuit of a high-power heating system. The failure indication circuit is used for performing distinguishing indication on failures of loads and power units of the high-power heating system and comprises a load RL connected between an L pole and an N pole of an alternating current power supply, wherein a hollow current transformer CT is sleeved on an L-pole inlet wire of the load RL, a light-emitting diode D2 and a diode D1 are sequentially and serially connected between a second lead end and a first lead end of the hollow current transformer CT in the forward direction, a detection resistor R is further connected between the first lead end of the hollow current transformer CT and an L-pole power wire, and a node between the light-emitting diode D2 and the diode D1 is connected with the N pole of the power supply through a self-checking button K. The failure indication circuit is simple in structure, few in element, low in cost and easy and convenient to operate, and greatly improves failure analysis and overhauling efficiency.
Description
Technical field
The utility model relates to a kind of failure indicating circuit for load and the power-supply unit fault of high-power heating system are distinguished the high-power heating system of indication.
Background technology
In the circuit of high-power heating system consists of, power-supply unit makes its work to the load out-put supply, when open circuit fault appears in system, when load quits work, be difficult to judge it is that fault or the power supply of power-supply unit of load itself breaks down by shirtsleeve operation, make troubles for follow-up maintenance, increased the cycle of fault analysis and maintenance.
Summary of the invention
Technical problem to be solved in the utility model is, provide a kind of when high-power heating system breaks down fast failure judgement source, improve fault analysis and overhaul efficiency, and the failure indicating circuit of the high-power heating system that circuit structure is simple, cost is low.
The failure indicating circuit of high-power heating system of the present utility model includes the load RL that is connected between the AC power L utmost point and the N utmost point, at the L of the load RL utmost point inlet wire cover air core current transformer CT is arranged, the lead end 2 of air core current transformer CT between the lead end 1 successively forward be serially connected with light emitting diode D2 and diode D1, also be connected with one and detect resistance R between the lead end 1 of air core current transformer CT and L utmost point power lead, light emitting diode D2 is connected with the power supply N utmost point through a self check button K with node between two utmost point diode D1.
Circuit structure of the present utility model is simple, element is few, cost is low, when system's generation open circuit fault, can come self-supply power source by the rapid failure judgement of luminous situation that presses the button the observation light emitting diode is not from load itself, simple to operation, greatly improve fault analysis and overhaul efficiency.
Description of drawings
Fig. 1 is circuit diagram of the present utility model.
Embodiment
As shown in the figure, the failure indicating circuit of this high-power heating system includes the load RL that is connected between the AC power L utmost point and the N utmost point, at the L of the load RL utmost point inlet wire cover air core current transformer CT is arranged, the lead end 2 of air core current transformer CT between the lead end 1 successively forward be serially connected with light emitting diode D2 and diode D1, also be connected with one and detect resistance R between the lead end 1 of air core current transformer CT and L utmost point power lead, light emitting diode D2 is connected with the power supply N utmost point through a self check button K with node between two utmost point diode D1.
Principle of work of the present utility model is:
When the equipment investment duty, there is operating voltage at load RL two ends, because current transformer directly is enclosed within on the lead-in wire of load RL, lead-in wire has electric current to pass through, on current transformer, will produce an induced voltage, the light emitting diode D2 that is connected on two lead-in wires of mutual inductor forms a current return by diode D1, lumination of light emitting diode, and instruction heater load RL works.
When load RL breaks down, press self check button K, will form two current returns:
1, positive half cycle current loop:
Load leads (the L utmost point)---self check resistance R----air core current transformer CT lead-in wire 1----air core current transformer lead-in wire 2----light emitting diode D2----self check button K-----load leads (the N utmost point) consist of the loop.
When self check resistance R, Current Transmit, when light emitting diode D2 element is normal, lumination of light emitting diode is illustrated in the self check electric supply installation duty normal, and fault occurs in the load.
2, negative half-cycle current loop:
Load leads (the L utmost point)---diode D1---self check button----load leads (the N utmost point) consist of the loop.
D1 has played a buffer action in the circuit, makes the alternating voltage positive-negative half-cycle separately form the work loop.If there is not the buffer action of D1, can not self check arrive the Current Transmit loop, light emitting diode also can not be luminous.
If press self check button K, light emitting diode D2 is not luminous, and then fault may occur in power unit.
Claims (1)
1. the failure indicating circuit of a high-power heating system, include the load RL that is connected between the AC power L utmost point and the N utmost point, it is characterized in that: at the L of the load RL utmost point inlet wire cover air core current transformer CT is arranged, the lead end 2 of air core current transformer CT between the lead end 1 successively forward be serially connected with light emitting diode D2 and diode D1, also be connected with one and detect resistance R between the lead end 1 of air core current transformer CT and L utmost point power lead, light emitting diode D2 is connected with the power supply N utmost point through a self check button K with node between two utmost point diode D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220314840 CN202758012U (en) | 2012-07-02 | 2012-07-02 | Failure indication circuit of high-power heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220314840 CN202758012U (en) | 2012-07-02 | 2012-07-02 | Failure indication circuit of high-power heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202758012U true CN202758012U (en) | 2013-02-27 |
Family
ID=47737184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220314840 Expired - Fee Related CN202758012U (en) | 2012-07-02 | 2012-07-02 | Failure indication circuit of high-power heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202758012U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721888A (en) * | 2012-07-02 | 2012-10-10 | 镇江电研华源电力技术有限公司 | Failure indication circuit of high-power heating system |
| CN104849589A (en) * | 2015-05-06 | 2015-08-19 | 国网青海省电力公司黄化供电公司 | Heater operation monitoring device |
-
2012
- 2012-07-02 CN CN 201220314840 patent/CN202758012U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721888A (en) * | 2012-07-02 | 2012-10-10 | 镇江电研华源电力技术有限公司 | Failure indication circuit of high-power heating system |
| CN104849589A (en) * | 2015-05-06 | 2015-08-19 | 国网青海省电力公司黄化供电公司 | Heater operation monitoring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202424117U (en) | Three-phase default phase detection and automatic protection circuit | |
| CN201859818U (en) | Power failure double color light indicator | |
| CN202758012U (en) | Failure indication circuit of high-power heating system | |
| CN102721888A (en) | Failure indication circuit of high-power heating system | |
| CN207321598U (en) | LED street lamp failure monitoring system based on the Big Dipper | |
| CN203398785U (en) | Switching switch controller | |
| CN204086445U (en) | A kind of wire breakage detection device for cables | |
| CN103137386A (en) | Power off indicator tube | |
| CN104378895B (en) | A kind of lamps and lanterns water inlet observation circuit | |
| CN201845062U (en) | Grounding fault monitoring device of power supply circuit for well drilling electromagnetic brake | |
| CN201966165U (en) | 220V alternating-current power supply fuse burnout flashing indicator of electric appliance | |
| CN101949968A (en) | Working condition indicating device used for tunnel oven heater | |
| CN202145223U (en) | Electric device working state indicating circuit | |
| CN206363502U (en) | A kind of down circuitry warning device | |
| CN207573687U (en) | Signal detection control circuit | |
| CN201656152U (en) | Safety socket | |
| CN204947580U (en) | A kind of A.C. contactor protective device | |
| CN202471847U (en) | Power transformer protection outlet matrix check meter | |
| CN204856797U (en) | Point type temperature sensing fire detection circuit | |
| CN204536399U (en) | A kind of alterating and direct current detection system | |
| CN202649295U (en) | Safety indicating device used for high-voltage power line knife switch | |
| CN203223781U (en) | Fault indicating lamp for electrical equipment | |
| CN204788470U (en) | Electric wire netting transformer safety inspection system | |
| CN202018471U (en) | Intelligent controller with light beam indicator | |
| CN203688712U (en) | Low-voltage power distribution branch identification device |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20210702 |