CN203367980U - Distribution box with temperature protection device - Google Patents
Distribution box with temperature protection device Download PDFInfo
- Publication number
- CN203367980U CN203367980U CN 201320349572 CN201320349572U CN203367980U CN 203367980 U CN203367980 U CN 203367980U CN 201320349572 CN201320349572 CN 201320349572 CN 201320349572 U CN201320349572 U CN 201320349572U CN 203367980 U CN203367980 U CN 203367980U
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- CN
- China
- Prior art keywords
- temperature
- distribution box
- circuit breaker
- temperature protection
- circuit
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- Expired - Lifetime
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Abstract
A distribution box with a temperature protection device includes a circuit breaker QA and a control circuit. The circuit breaker QA includes a main contact, a shunt trip coil QAL and an auxiliary contact QA-2, wherein the main contact is used for control on and off of a distribution circuit at a load side. The control circuit formed by series connection of a temperature protection circuit and the shunt trip coil QAL and the auxiliary contact QA-2 of the circuit breaker QA. The temperature protection circuit may consist of a sudden jump temperature controller KSD, or two or more sudden jump temperature controllers KSD in parallel connection. The technical effects of the utility model lie in that the temperature in the distribution box with the temperature protection device is controlled in a safe range; equipment failure or fire caused by over-high temperature of the distribution box is avoided; and the reliability of power supply is improved.
Description
Technical field
The utility model relates to the power distribution panel technical field, specifically a kind of distribution box with temperature protective device.
Background technology
In the modern life, electricity is lived closely inseparablely with people, safety utilization of electric power, makes good use of electricity and has become the part of daily life.And the distribution box drop set that to be the user use, as when distribution box overload, loose contact or other reason, caused equipment heating, just there will be in device damage and distribution box the fault such as catch fire not in time as processed, even cause more serious economic loss.When distribution box breaking out of fire on every side, spin manifold temperature is raise fast simultaneously, as do not excised in time user's power supply, to rescue and relief work, bring great potential safety hazard.
The utility model content
The purpose of this utility model is to provide a kind of distribution box with temperature protective device, and when distribution the temperature inside the box reaches 60 ℃, the load-side power supply in can the automatic disconnection distribution box, occur that to avoid temperature further to raise distribution box catches fire.
The technical solution of the utility model is as follows: a kind of distribution box with temperature protective device, comprise circuit breaker Q A and control loop, and described circuit breaker Q A comprises main contacts, shunt opening breaking coil QA
lwith auxiliary contact QA-2, wherein main contacts is for the break-make of control overhead side distribution loop, and described control loop is by the shunt opening breaking coil QA of temperature protection circuit and circuit breaker Q A
land auxiliary contact QA-2 is in series.Its operation principle is: when distribution box works, the main contacts closure of circuit breaker Q A, be the load side power supply.Now, in control loop, the auxiliary contact QA-2 closure of circuit breaker Q A, and temperature protection circuit is in open-circuit condition, so shunt opening breaking coil QA
lnot energising.When distribution the temperature inside the box reaches the temperature spot of temperature protection circuit setting, temperature protection circuit conducting, shunt opening breaking coil QA
lthe energising action, make circuit breaker Q A tripping operation, and main contacts disconnects, and stops as the load side power supply; Simultaneously, auxiliary contact QA-2 also disconnects because of circuit breaker Q A tripping operation, to avoid shunt opening coil QA
lbecause of long charged, burn.In technique scheme; temperature protection circuit can consist of a Kick type temperature controller KSD; if the distribution box volume is larger; two above Kick type temperature controller KSD can according to circumstances be set; form temperature protection circuit after these Kick type temperature controllers KSD parallel connection; when any Kick type temperature controller KSD wherein reaches the temperature spot of setting and during conducting, the equal conducting of temperature protection circuit and then make shunt opening breaking coil QA
lthe energising action.
Technique effect of the present utility model is: the distribution box with temperature protective device is controlled at the temperature inside the box in safe range, avoids, because excess Temperature causes in distribution box equipment fault or catches fire, having improved power supply reliability.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the technical solution of the utility model is further described.
Fig. 1 consists of the electrical schematic diagram of control loop a Kick type temperature controller.
Fig. 2 consists of the electrical schematic diagram of control loop a plurality of Kick type temperature controllers.
Fig. 3 is the schematic diagram with the distribution box of temperature protective device.
Embodiment
As Fig. 1, Selection of Circuit Breakers NM7-225S/3340, Kick type temperature controller is selected KSD301.Thermostat KSD is arranged on the metal base plate of distribution box, with common control line phase line L of termination on the upper pile crown of circuit breaker Q A, phase line is serially connected in the shunt opening coil QA that often opens auxiliary contact QA-2, thermostat KSD node, circuit breaker Q A of circuit breaker Q A in turn
lafter be connected to zero line N end, form control loop.If distribution box is larger, need several thermostats of installing more,, first by the thermostat KSD parallel connection of several same model, its two leafs, one end is connected to auxiliary contact QA-2 mono-end of circuit breaker Q A, and an other end is connected to shunt opening coil QA
lone end, as shown in Figure 2.The main contacts of circuit breaker Q A is connected in the distribution loop of load side.Finally, by all terminals insulating sleeve good seal, in order to avoid cause electric leakage dangerous.
When distribution the temperature inside the box guarantor arrives 60 ℃, the action of KSD301 type thermostat, its normally opened contact closure, the shunt opening coil QA of connection circuit breaker Q A
l, circuit breaker Q A tripping operation, cut off load power automatically.After the outage of user's side, should notify immediately the attendant to process, and again put into operation after inspection is as good as, to guarantee equipment safety operation.
Claims (5)
1. the distribution box with temperature protective device, is characterized in that, comprises circuit breaker (QA) and control loop, and described circuit breaker (QA) comprises main contacts, shunt opening breaking coil (QA
l) and auxiliary contact (QA-2), wherein main contacts is for the break-make of control overhead side distribution loop, and described control loop is by the shunt opening breaking coil (QA of temperature protection circuit and circuit breaker (QA)
l) and auxiliary contact (QA-2) in series.
2. the distribution box with temperature protective device according to claim 1, is characterized in that, described temperature protection circuit consists of a Kick type temperature controller (KSD).
3. the distribution box with temperature protective device according to claim 1, is characterized in that, described temperature protection circuit forms by two above Kick type temperature controllers (KSD) are in parallel.
4. the distribution box with temperature protective device according to claim 1, is characterized in that, the model of described circuit breaker (QA) is NM7-225S/3340.
5. according to described any one distribution box with temperature protective device of claim 2 or 3, it is characterized in that, the model of described Kick type temperature controller (KSD) is KSD301, and its temperature control point is 60 degrees centigrade, and contact form is open type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320349572 CN203367980U (en) | 2013-06-18 | 2013-06-18 | Distribution box with temperature protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320349572 CN203367980U (en) | 2013-06-18 | 2013-06-18 | Distribution box with temperature protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203367980U true CN203367980U (en) | 2013-12-25 |
Family
ID=49815699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320349572 Expired - Lifetime CN203367980U (en) | 2013-06-18 | 2013-06-18 | Distribution box with temperature protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203367980U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192912A (en) * | 2017-07-14 | 2017-09-22 | 国网河南省电力公司濮阳供电公司 | Distribution box failure detector circuit |
-
2013
- 2013-06-18 CN CN 201320349572 patent/CN203367980U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192912A (en) * | 2017-07-14 | 2017-09-22 | 国网河南省电力公司濮阳供电公司 | Distribution box failure detector circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |
|
| CX01 | Expiry of patent term |