CN203553905U - Under-voltage protection control circuit - Google Patents
Under-voltage protection control circuit Download PDFInfo
- Publication number
- CN203553905U CN203553905U CN201320725776.0U CN201320725776U CN203553905U CN 203553905 U CN203553905 U CN 203553905U CN 201320725776 U CN201320725776 U CN 201320725776U CN 203553905 U CN203553905 U CN 203553905U
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- China
- Prior art keywords
- control circuit
- button
- contactor
- loop
- power supply
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- Expired - Fee Related
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Abstract
The utility model provides an under-voltage protection control circuit. The under-voltage protection control circuit comprises a loop control circuit, a UPS, and a power supply. The loop control circuit is formed by a fuse FU, an over-current protector FR, a first button SB1, a second button SB2, a first AC contactor KM1 and a second AC contactor KM2, wherein the fuse FU, the over-current protector FR, the first button SB1, the second button SB2 and the first AC contactor KM1 are connected in series, and the second AC contactor KM2 is parallelly connected to the second button SB2. The UPS is parallelly connected in the loop control circuit. The power supply is a three-phase power supply connected to the loop control circuit. The under-voltage protection control circuit adds the UPS into the loop control circuit, so that when a power grid encounters instantaneous voltage loss, the control circuit is still powered; and as the time of the voltage loss is short, main loop equipment does not trip out due to overloading, so that the equipment is not powered off.
Description
Technical field
The utility model relates to a kind of o-volt protection control loop.
Background technology
Enterprise's quantity-produced process equipment has various AC/DC motor, and various AC/DC motor are controlled by various control technologys, and the control appliance of various control technologys needs one or more single-phase or three phase mains.General control power supply is taken from main equipment power supply or other powers of alterating and direct current or dual power supply.For preventing that visual plant from having a power failure, there is great production, personal safety accident, adopt at present dual power supply.But because instantaneous loss of pressure often occurs line voltage, make production equipment generation power outage, make to produce and can not normally carry out and make device fails.
Utility model content
The purpose of this utility model is to provide a kind of and guarantees that equipment is unlikely to the o-volt protection control loop of shutting down the in the situation that of instantaneous loss of pressure.
For solving the problems of the technologies described above, the utility model o-volt protection control loop, comprising: the loop control circuit being comprised of fuse FU, overcurrent protector FR, the first button SB1, the second button SB2, the first A.C. contactor KM1 and the second A.C. contactor KM2; Wherein said fuse FU, described overcurrent protector FR, described the first button SB1, described the second button SB2 connect with the first A.C. contactor KM1; Described the second A.C. contactor KM2 is in parallel with described the second button SB2; UPS, described UPS is connected in parallel in described loop control circuit; Power supply, described loop control circuit is connected with described power supply.Described power supply is three phase mains.
The utility model o-volt protection control loop installs UPS uninterrupted power supply additional on control loop, and when the instantaneous dead electricity of line voltage, control loop is dead electricity not, and major loop equipment is because the decompression time is short, and not overload tripping operation of equipment, does not have a power failure main equipment.
Accompanying drawing explanation
Fig. 1 is the utility model o-volt protection control loop line map.
Embodiment
Below in conjunction with accompanying drawing, the utility model o-volt protection control loop is described in further detail.
As shown in Figure 1, the utility model o-volt protection control loop, comprising: the loop control circuit being comprised of fuse FU, overcurrent protector FR, the first button SB1, the second button SB2, the first A.C. contactor KM1 and the second A.C. contactor KM2; Wherein fuse FU, overcurrent protector FR, the first button SB1, the second button SB2 connect with the first A.C. contactor KM1; The second A.C. contactor KM2 is in parallel with the second button SB2; UPS, UPS is connected in parallel in loop control circuit; Three phase mains, loop control circuit is connected with three phase mains.
The utility model o-volt protection control loop installs UPS uninterrupted power supply additional on control loop, and when the instantaneous dead electricity of line voltage, control loop is dead electricity not, and major loop equipment is because the decompression time is short, and not overload tripping operation of equipment, does not have a power failure main equipment.
Below the preferred embodiment of the utility model having been created illustrates, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all modification being equal to or replacement under the prerequisite without prejudice to the invention spirit, and the modification that these are equal to or replacement are all included in the application's claim limited range.
Claims (2)
1. o-volt protection control loop, is characterized in that, comprising:
The loop control circuit being formed by fuse FU, overcurrent protector FR, the first button SB1, the second button SB2, the first A.C. contactor KM1 and the second A.C. contactor KM2; Wherein
Described fuse FU, described overcurrent protector FR, described the first button SB1, described the second button SB2 connect with the first A.C. contactor KM1; Described the second A.C. contactor KM2 is in parallel with described the second button SB2;
UPS, described UPS is connected in parallel in described loop control circuit;
Power supply, described loop control circuit is connected with described power supply.
2. o-volt protection control loop according to claim 1, is characterized in that, described power supply is three phase mains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320725776.0U CN203553905U (en) | 2013-11-15 | 2013-11-15 | Under-voltage protection control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320725776.0U CN203553905U (en) | 2013-11-15 | 2013-11-15 | Under-voltage protection control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203553905U true CN203553905U (en) | 2014-04-16 |
Family
ID=50471974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320725776.0U Expired - Fee Related CN203553905U (en) | 2013-11-15 | 2013-11-15 | Under-voltage protection control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203553905U (en) |
-
2013
- 2013-11-15 CN CN201320725776.0U patent/CN203553905U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20140416 Termination date: 20151115 |
|
| EXPY | Termination of patent right or utility model |