CN215678607U - Shunt release disconnection detection circuit - Google Patents
Shunt release disconnection detection circuit Download PDFInfo
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- CN215678607U CN215678607U CN202121863656.8U CN202121863656U CN215678607U CN 215678607 U CN215678607 U CN 215678607U CN 202121863656 U CN202121863656 U CN 202121863656U CN 215678607 U CN215678607 U CN 215678607U
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- shunt release
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Abstract
The utility model discloses a circuit for detecting disconnection of a shunt release, which comprises a resistor R1, a light emitting diode L1 and a photoelectric coupler Q1. The detection circuit is connected between the high end of the shunt release power switch device K1 and the shunt coil, whether the shunt release is an intermittent or continuous long-powered shunt release, and whether the shunt release is a single-coil or double-coil shunt release.
Description
Technical Field
The utility model relates to the field of low-voltage electrical appliances, in particular to a shunt release disconnection detection circuit.
Background
The early shunt release is only a release which is formed by energizing a pure electromagnet including a coil through two ends of the coil to force a movable iron core to pop out so as to realize the opening of a circuit breaker, and various defects such as dependence on human feeling of coil energization time and the like are eliminated. Most of the existing shunt release devices are pulse release devices with control lines, which can be divided into two modes, i.e., an instantaneous (intermittent) mode and a long-time power-on mode according to circuit functions, and can be divided into a single-coil type and a double-coil type according to coil types. Except for a pure coil type shunt release, whether the shunt release is an interrupted type or a continuous long-energized shunt release, whether the shunt release is a single-coil type or double-coil type shunt release, the circuit structure of the shunt release can be equivalent to the basic shunt release circuit. After the control circuit judges that the power grid voltage meets the condition that the input voltage is greater than 70% of the rated voltage, a pulse signal is sent out to enable the switching device K1 to be conducted, the full-wave rectification voltage VH is applied to two ends of the shunt coil, the shunt coil generates magnetic field force, the movable iron core is forced to pop out of the top-opening circuit breaker locking mechanism, and the circuit breaker is opened.
In the power supply field, if the shunt release in any form is mildewed, the current impact is too large, or the control single-circuit fault is caused to cause coil disconnection, the whole shunt release fails, and the serious event that the breaker cannot be opened is caused.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides the shunt release disconnection detection circuit which can locally display the on-off condition of the shunt coil and also can remotely display the on-off condition of the shunt coil, and has the advantages of simple circuit, small volume and reliable work.
The purpose of the utility model is realized by the following technical scheme.
A shunt release disconnection detection circuit comprises a resistor R1, a light emitting diode L1 and a photoelectric coupler Q1, wherein one end of the resistor R1 is connected between the high end of a shunt release power switch device and the low end of a shunt coil, the other end of the resistor R1 is connected with the anode of a light emitting diode L1, the cathode of the light emitting diode L1 is connected with the anode of the input end of the photoelectric coupler Q1, the cathode of the input end of the photoelectric coupler Q1 is grounded, and the output ends of the photoelectric coupler Q1 are defined as an M end and an N end and used for expanding external monitoring connection.
The led L1 is a red or other color led and the led L1 is a circular, square, pin or patch type mounting.
The photoelectric coupler Q1 is an integrated or discrete photoelectric coupler, and the photoelectric medium includes visible light, infrared light and ultraviolet light.
The shunt release disconnection detection circuit is used as an accessory and is arranged in the shunt release or is integrated on a circuit board of the shunt release.
The shunt release disconnection detection circuit is used for a pure coil shunt release, or a short-time system and pulse shunt release, or a long-time system and long-time power-on shunt release.
The shunt release disconnection detection circuit is arranged in the shunt release and used for local display, and the M end and the N end are led out for external use.
The resistor R1 plays a role in limiting current, the light emitting diode L1 plays a role in local indication and is directly installed on the shell of the shunt release body, if the shunt coil is disconnected, the + V voltage cannot produce current through the shunt coil → the resistor R1 → the light emitting diode L1 and the photoelectric coupler Q1, the light emitting diode L1 cannot be conducted to emit light, the input end of the photoelectric coupler Q1 also has no current to cause the output end to be cut off, and the state that the light emitting diode L1 cannot emit light can indicate that the coil is disconnected; if the shunt coil is not disconnected, the + V voltage produces current through the shunt coil → the resistor R1 → the light emitting diode L1 and the photoelectric coupler Q1, the light emitting diode L1 is turned on to emit light, the current flows into the input end of the photoelectric coupler Q1 to turn on the output end, and the state of light emitting diode L1 indicates "normal coil".
A circuit for detecting the disconnection of a shunt release comprises a resistor R1 and a light emitting diode L1, wherein one end of the resistor R1 and the cathode of the light emitting diode L1 are respectively connected with two ends of a power supply input line switch of a pure coil type shunt release or a discontinuous shunt release, the other end of the resistor R1 is connected with the anode of the light emitting diode L1, if a shunt coil in the pure coil type shunt release or the discontinuous shunt release is not disconnected, when the switch is disconnected, because the resistor R1 limits the current, the light emitting diode L1 flows a slight weak current in the coil, the electromagnetic power of the coil is not enough to drive an electromagnet to act, but the current in the light emitting diode L1 can represent that the coil is normal; when the shunt coil is disconnected, a current path cannot be formed, and the light emitting diode L1 does not emit light, indicating "coil disconnection".
Compared with the prior art, the utility model has the advantages that: the detection circuit only uses 2-3 elements, not only can locally display the on-off condition of the shunt coil, but also can remotely display the on-off condition of the shunt coil, the circuit is very simple, the display effect is visual and clear, and the remote output is convenient for further wire breakage processing such as alarming, joint control and the like.
Drawings
Fig. 1 is a circuit schematic diagram of an embodiment 1 of the shunt release of the present invention.
Fig. 2 is a schematic circuit diagram of embodiment 2 of the shunt release of the present invention.
Detailed Description
The utility model is described in detail below with reference to the drawings and specific examples.
Example 1
As shown in fig. 1, the disconnection detection circuit of the shunt release comprises a resistor R1, a light emitting diode L1 and a photoelectric coupler Q1, wherein one end of the resistor R1 is connected between the high end of a power switch device of the shunt release and the low end of a shunt coil, the other end of the resistor R1 is connected with the anode of a light emitting diode L1, the cathode of the light emitting diode L1 is connected with the anode of the input end of the photoelectric coupler Q1, the cathode of the input end of the photoelectric coupler Q1 is grounded, and the output ends of the photoelectric coupler Q1 are defined as M and N ends for expanding external monitoring connection.
The led L1 is a red or other color led and the led L1 is a circular, square, pin or patch type mounting.
The photoelectric coupler Q1 is an integrated or discrete photoelectric coupler, and the photoelectric medium includes visible light, infrared light and ultraviolet light.
The shunt release disconnection detection circuit is used as an accessory and is arranged in the shunt release or is integrated on a circuit board of the shunt release.
The shunt release disconnection detection circuit is used for a pure coil shunt release, or a short-time system and pulse shunt release, or a long-time system and long-time power-on shunt release.
The shunt release disconnection detection circuit is arranged in the shunt release and used for local display, and the M end and the N end are led out for external use. Can be used independently as a separate component.
The resistor R1 plays a role in limiting current, the light emitting diode L1 plays a role in local indication and is directly installed on the shell of the shunt release body, if the shunt coil is disconnected, the + V voltage cannot produce current through the shunt coil → the resistor R1 → the light emitting diode L1 and the photoelectric coupler Q1, the light emitting diode L1 cannot be conducted to emit light, the input end of the photoelectric coupler Q1 also has no current to cause the output end to be cut off, and the state that the light emitting diode L1 cannot emit light can indicate that the coil is disconnected; if the shunt coil is not disconnected, the + V voltage produces current through the shunt coil → the resistor R1 → the light emitting diode L1 and the photoelectric coupler Q1, the light emitting diode L1 is turned on to emit light, the current flows into the input end of the photoelectric coupler Q1 to turn on the output end, and the state of light emitting diode L1 indicates "normal coil".
Further, the other end of the resistor (R2) is connected with the + V end of the coil, the other end of the resistor (R2) is connected with the anode of another light-emitting diode L2, the cathode of the L2 is connected with the anode of the input end of a photoelectric coupler Q2, the two output ends of the Q2 are named as P and Q, when the shunt release is electrified, the L2 emits light to indicate an "electrified state", when the shunt release is not electrified, the L2 does not emit light to indicate a "power-off state", and the output of the Q2 is further judged by an external circuit.
Further, as for the shunt release of the discontinuous system operation mode, the detection circuit may be connected to the common terminal of the switching device and the shunt coil to perform the same indication function as the shunt release of the long-duration system (capable of being energized for a long time).
Further, L1 will always be on when the shunt release switching device fails open circuit, and L1 will always be off when the shunt release switching device fails short circuit.
Example 2
As shown in fig. 2, a disconnection detection circuit of a shunt release includes a resistor R1 and a light emitting diode L1, one end of the resistor R1 and a cathode of the light emitting diode L1 are respectively connected to two ends of a power supply input line switch of a pure coil type shunt release or a discontinuous shunt release, and the other end of the resistor R1 is connected to an anode of a light emitting diode L1, if a shunt coil in the pure coil type shunt release or the discontinuous shunt release is not disconnected, when the switch is disconnected, due to current limiting of a resistor R1, a weak current flows through a light emitting diode L1 and a coil, and electromagnetic power of the coil is not enough to drive an electromagnet to operate, but a current in the light emitting diode L1 can indicate that the coil is normal; when the shunt coil is disconnected, a current path cannot be formed, and the light emitting diode L1 does not emit light, indicating "coil disconnection".
Claims (8)
1. The circuit for detecting the disconnection of the shunt release is characterized by comprising a resistor R1, a light emitting diode L1 and a photoelectric coupler Q1, wherein one end of the resistor R1 is connected between the high end of a power switch device of the shunt release and the low end of a shunt coil, the other end of the resistor R1 is connected with the anode of a light emitting diode L1, the cathode of the light emitting diode L1 is connected with the anode of the input end of the photoelectric coupler Q1, the cathode of the input end of the photoelectric coupler Q1 is grounded, and two output ends of the photoelectric coupler Q1 are defined as an M end and an N end and are used for expanding external monitoring connection.
2. The shunt release disconnection detection circuit of claim 1, wherein said led L1 is a red or other color led, and said led L1 is a circular, square, pin, or patch type mounting.
3. The shunt release disconnection detection circuit of claim 1, wherein: the photoelectric coupler Q1 is an integrated or discrete photoelectric coupler, and the photoelectric medium includes visible light, infrared light and ultraviolet light.
4. The shunt release disconnection detection circuit of claim 1, wherein: the shunt release disconnection detection circuit is used as an accessory and is arranged in the shunt release or is integrated on a circuit board of the shunt release.
5. The shunt release disconnection detection circuit of claim 1, wherein: the shunt release disconnection detection circuit is used for a pure coil shunt release, or a short-time system and pulse shunt release, or a long-time system and long-time power-on shunt release.
6. The shunt release disconnection detection circuit of claim 1, wherein: the shunt release disconnection detection circuit is arranged in the shunt release and used for local display, and the M end and the N end are led out for external use.
7. The disconnection detecting circuit of claim 1, wherein the resistor R1 is used for current limiting, the led L1 is used for local indication and is directly mounted on the housing of the main body of the shunt release, if the shunt coil is disconnected, the + V voltage cannot produce current through the shunt coil → resistor R1 → led L1 and the photocoupler Q1, the led L1 is not turned on to emit light, the photocoupler Q1 is also turned off when no current flows at the input end, and the led L1 is not turned on to indicate "the coil is disconnected"; if the shunt coil is not disconnected, the + V voltage produces current through the shunt coil → the resistor R1 → the light emitting diode L1 and the photoelectric coupler Q1, the light emitting diode L1 is turned on to emit light, the current flows into the input end of the photoelectric coupler Q1 to turn on the output end, and the state of light emitting diode L1 indicates "normal coil".
8. A circuit for detecting disconnection of a shunt release is characterized by comprising a resistor R1 and a light emitting diode L1, wherein one end of the resistor R1 and the cathode of the light emitting diode L1 are respectively connected to two ends of a power supply input line switch of a pure coil type shunt release or a discontinuous shunt release, the other end of the resistor R1 is connected with the anode of a light emitting diode L1, if a shunt coil in the pure coil type shunt release or the discontinuous shunt release is not disconnected, when the switch is disconnected, due to the fact that the resistor R1 limits current, the light emitting diode L1 flows through and a weak current flows through the coil, the electromagnetic power of the coil is not enough to drive an electromagnet to act, but the current in the light emitting diode L1 can represent that the coil is normal; when the shunt coil is disconnected, a current path cannot be formed, and the light emitting diode L1 does not emit light, indicating "coil disconnection".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121863656.8U CN215678607U (en) | 2021-08-10 | 2021-08-10 | Shunt release disconnection detection circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121863656.8U CN215678607U (en) | 2021-08-10 | 2021-08-10 | Shunt release disconnection detection circuit |
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| CN215678607U true CN215678607U (en) | 2022-01-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115241020A (en) * | 2022-08-17 | 2022-10-25 | 北京飞利信信息安全技术有限公司 | Electromagnetic trip for intelligent circuit breaker |
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2021
- 2021-08-10 CN CN202121863656.8U patent/CN215678607U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115241020A (en) * | 2022-08-17 | 2022-10-25 | 北京飞利信信息安全技术有限公司 | Electromagnetic trip for intelligent circuit breaker |
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