CN203491677U - Overload heat protection control device - Google Patents
Overload heat protection control device Download PDFInfo
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- CN203491677U CN203491677U CN201320595984.3U CN201320595984U CN203491677U CN 203491677 U CN203491677 U CN 203491677U CN 201320595984 U CN201320595984 U CN 201320595984U CN 203491677 U CN203491677 U CN 203491677U
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Abstract
The utility model discloses a remote monitoring device for dustproof equipment. The remote monitoring device comprises a control center, at least two central processing units, at least two memories, an input interface circuit, an output interface circuit and at least two communication modules, wherein the control center is used for receiving state information of the dustproof equipment and sending control signals modulating the dustproof equipment; the central processing units are used for receiving the input state information and data and executing a control program, so that output state information and data are generated; the memories are used for storing the control program of a user; the input interface circuit used for collecting the state information and data of the dustproof equipment is arranged between the dustproof equipment and the central processing units; the output interface circuit used for transmitting the state information and data came from the central processing units is arranged between the communication modules and the central processing units; the communication modules are connected to the output interface circuit; and the control center is connected with the communication modules through a twisted pair. The overload heat protection control device is of small size and low price, is convenient to install and detach, and can be maintained and replaced without the device being shut down, so that the device can be replaced without interference.
Description
Technical field
The utility model relates to a kind of control device of crossing heat-carrying protection, belongs to control device technical field.
Background technology
In prior art, electric motor protecting product category is various, the rated power of motor, and short circuit, overload current are all had nothing in common with each other, even if the motor protecter of match power has been installed, also do not have the effect of protection.Therefore, consider in conjunction with domestic actual conditions, in order to overcome above-mentioned technological deficiency, how to design the control device that a kind of versatility mistake heat-carrying good, that be convenient to install, cost is low is protected, can overcome above-mentioned technical problem becomes the direction that those skilled in the art make great efforts.
Summary of the invention
The purpose of this utility model is to provide a kind of control device of crossing heat-carrying protection, and this control device of crossing heat-carrying protection has accurate inverse time overpower protection characteristic, has reliable phase shortage and three-phase imbalance protection; The operating current that can intuitively show protected motor; Good stability, current detection accuracy are high, easy to operate.
For achieving the above object, the technical solution adopted in the utility model is: a kind of control device of crossing heat-carrying protection, comprise: current transformer, this current transformer is set in power leads outer surface, and this current transformer is for according to power leads operating current, induction generates current signal;
With the current detection module that described current transformer is connected, this current detection module is for detection of the size of current from described current transformer;
Control module, for by the threshold values comparison of the current value from current detection module and setting, when current value surpasses the threshold values of setting, generates abnormal control signal;
Relay, its coil tandem is in described power leads, thus the abnormal control signal responding from described control module changes off-state into by closure state.
In technique scheme, further improvement project is as follows:
1. in such scheme, also comprise a display module, this display module is connected to the output of described control module, for the real-time demonstration of abnormal information.
2. in such scheme, described power leads is at least one in A phase line, B phase line and C phase line.
Because technique scheme is used, the utility model compared with prior art has following advantages and effect:
The utility model is for the long-distance monitorng device of dust guard pollution abatement equipment, and it has accurate inverse time overpower protection characteristic, has reliable phase shortage and three-phase imbalance protection; The operating current that can intuitively show protected motor; Good stability, current detection accuracy are high, easy to operate.
Accompanying drawing explanation
Accompanying drawing 1 is crossed the control device structural representation of heat-carrying protection for the utility model.
In above accompanying drawing: 1, current transformer; 2, power leads; 3, current detection module; 4, control module; 5, relay; 6, display module.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment: a kind of control device of crossing heat-carrying protection, comprising: current transformer 1, this current transformer 1 is set in power leads 2 outer surfaces, and this current transformer 1 is for according to power leads, 2 operating current inductions generate current signal;
With the current detection module 3 that described current transformer 1 is connected, this current detection module 3 is for detection of the size of current from described current transformer 1;
Control module 4, for by the threshold values comparison of the current value from current detection module 3 and setting, when current value surpasses the threshold values of setting, generates abnormal control signal;
Relay 5, its coil tandem is in described power leads 2, thus the abnormal control signal responding from described control module 4 changes off-state into by closure state.
Also comprise a display module 6, this display module 6 is connected to the output of described control module 4, for the real-time demonstration of abnormal information.
Above-mentioned power leads 2 is at least one in A phase line, B phase line and C phase line.
While adopting the control device of above-mentioned heat-carrying excessively protection, it has accurate inverse time overpower protection characteristic, has reliable phase shortage and three-phase imbalance protection; The operating current that can intuitively show protected motor; Good stability, current detection accuracy are high, easy to operate.
Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection range of the present utility model.
Claims (3)
1. cross the control device that heat-carrying is protected for one kind, it is characterized in that: comprising: current transformer (1), this current transformer (1) is set in power leads (2) outer surface, and this current transformer (1) is for according to power leads (2) operating current, induction generates current signal;
The current detection module (3) of connecting with described current transformer (1), this current detection module (3) is for detection of the size of current from described current transformer (1);
Control module (4), for will, from the current value of current detection module (3) and the threshold values comparison of setting, when current value surpasses the threshold values of setting, generating abnormal control signal;
Relay (5), its coil tandem is in described power leads (2), response from described control module (4) thus abnormal control signal by closure state, change off-state into.
2. control device according to claim 1, is characterized in that: also comprise a display module (6), this display module (6) is connected to the output of described control module (4), for the real-time demonstration of abnormal information.
3. control device according to claim 1, is characterized in that: described power leads (2) is at least one in A phase line, B phase line and C phase line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320595984.3U CN203491677U (en) | 2013-09-26 | 2013-09-26 | Overload heat protection control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320595984.3U CN203491677U (en) | 2013-09-26 | 2013-09-26 | Overload heat protection control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203491677U true CN203491677U (en) | 2014-03-19 |
Family
ID=50262479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320595984.3U Expired - Fee Related CN203491677U (en) | 2013-09-26 | 2013-09-26 | Overload heat protection control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203491677U (en) |
-
2013
- 2013-09-26 CN CN201320595984.3U patent/CN203491677U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20170926 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |