CN218335421U - High-efficient safe consumer of wisdom - Google Patents
High-efficient safe consumer of wisdom Download PDFInfo
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- CN218335421U CN218335421U CN202222494675.9U CN202222494675U CN218335421U CN 218335421 U CN218335421 U CN 218335421U CN 202222494675 U CN202222494675 U CN 202222494675U CN 218335421 U CN218335421 U CN 218335421U
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Abstract
The utility model discloses intelligent high-efficiency safe electric equipment, which comprises an isolation knife-fuse switch QS-FU, a dual-power automatic switching device ATSE, an isolation transformer MT and a three-phase four-wire protection main switch contactor KM; the isolating knife-fuse switch QS-FU is connected with a city three-phase alternating current, the city three-phase alternating current is communicated with the input end of an isolating transformer MT through a dual-power automatic switching device ATSE, and the isolating transformer MT converts the three-phase alternating current into a three-phase four-wire alternating current; isolation transformer MT exports three-phase four-wire alternating current and falls into the alternating voltage 380V three-phase output circuit that is connected with three-phase power equipment and the single-phase output circuit of alternating voltage 220V of the single-phase load of a plurality of through three-phase four-wire protection master switch contactor KMKMKMKMKMKM, guarantees the incessant safe power consumption of supplying power, and isolation transformer MT does not have surge current, and has the low pass filtering effect, and wherein three-phase four-wire protection master switch contactor KM has lacks looks or lacks zero line protect function, makes the utility model discloses a more high-efficient safety of power consumption system.
Description
Technical Field
The utility model relates to an electrical engineering safety power consumption field especially relates to a high-efficient safe consumer of wisdom.
Background
A three-phase delta-Y type isolation transformer is commonly used in a designed safety power utilization system, and commercial power is changed into an IT mode for safety power supply. At present, the isolation transformer can not only achieve the purpose that 3000V/30S does not leak electricity, but also has the function of a low-pass filter, and can prevent voltage and current from suddenly changing, so that mutual isolation between a mains supply and a safe power supply system is ensured, and the lightning weather induced voltage is added on the mains supply and cannot return to a terminal device through a line to damage the device. And the electric shock of the personnel can not happen. For example: application No. 202210516471.2; the utility model discloses the name: the fireproof and anti-electric shock protection device is used for fireproof and anti-electric shock protection of a three-phase four-wire system. The utility model discloses an utilize isolation transformer IT mode power supply, played better effect in the aspect of preventing that the mistake is touched the electricity. The power supply line lacks the safety power utilization protection, and does not relate to the improvement of the power quality and the high-efficiency power utilization.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a high-efficient safe consumer of wisdom.
In order to achieve the above purpose, the utility model provides a following technical scheme:
an intelligent high-efficiency safe power utilization device comprises an isolation knife-fuse switch QS-FU, a dual-power automatic switching device ATSE, an isolation transformer MT and a three-phase four-wire protection main switch contactor KM; the isolating knife-fuse switch QS-FU is connected with a city three-phase alternating current, the city three-phase alternating current is communicated with the input end of an isolating transformer MT through a dual-power automatic switching device ATSE, and the isolating transformer MT converts the city three-phase alternating current into a three-phase four-wire alternating current; the three-phase four-wire alternating current output by the isolation transformer MT is divided into an alternating voltage 380V three-phase output line connected with three-phase power equipment and a plurality of single-phase load alternating voltage 220V single-phase output lines through a three-phase four-wire protection main switch contactor KM.
The utility model discloses further set up: the alternating voltage 380V three-phase output line is connected with three-phase power equipment through a plastic case reclosing circuit breaker MCCB-ARD, the alternating voltage 220V single-phase output line is provided with a plurality of single-phase loads, and each single-phase load is connected with the alternating voltage 220V single-phase output line through a small reclosing circuit breaker MCB-ARD.
The utility model discloses further set up: three-phase four-wire protection master switch contactor KM includes contactor KM and the three-phase four-wire protection circuit whether release of control contactor KM, three-phase four-wire protection circuit includes live wire L1 respectively, live wire L2, diode D1 that live wire L3 is connected, diode D2, diode D3, live wire L1, live wire L2, live wire L3 passes through diode D1 respectively, diode D2, diode D3 half-wave rectification passes through one-way silicon controlled rectifier SCR and contactor KM coil to power supply zero line N formation three-phase half-wave direct current return circuit, live wire L1, live wire L2, live wire L3 lacks any looks or N line and opens circuit, then this half-wave direct current is discontinuous, and one-way silicon controlled rectifier SCR ends, contactor KM release cut-off circuit, thereby realize lacking looks or zero line protection, still be provided with SB1 at three-phase four-wire protection circuit and be the start button, SB2 is the scram button, R1, R2, R3 is the current-limiting resistor, electrolytic capacitor C sets up the release time delay that makes contactor KM with resistance R3 cooperation.
The utility model discloses further set up: the dual-power automatic switching device ATSE is connected with the fire safety power utilization interface, so that uninterrupted fire safety power utilization is realized, and a circuit breaker is not arranged at the fire safety power utilization interface, so that the fire safety power utilization interface is not limited by tripping due to short circuit or overload protection of the circuit breaker.
The utility model discloses further set up: the single chip microcomputer controls whether the small reclosing circuit breaker MCB-ARD of the single-phase output line with the alternating voltage of 220V and the plastic shell reclosing circuit breaker MCCB-ARD of the three-phase output line with the alternating voltage of 380V trip or close by carrying out calculation analysis or comparison analysis on detected voltage and current sampling, sensing data of temperature, humidity, smoke and arc faults, a load state, a power factor lambda of a transformer and three-phase unbalance and outputting various instructions according to analysis results.
The utility model discloses beneficial effect: the utility model discloses a city three-phase alternating current is through dual supply automatic switching device ATSE and isolation transformer MT's input switch-on, takes place to lack looks, excessive pressure, under-voltage or other trouble when the circuit, immediately, switches to qualified stand-by power supply, guarantees that the power supply is incessant, realizes safe power consumption, moreover isolation transformer MT exports three-phase four-wire alternating current and falls into the alternating voltage 220V single-phase output line of alternating voltage 380V three-phase output line and a plurality of single-phase load that is connected with three-phase power equipment through three-phase four-wire protection master switch contactor KMKMKMKMKMKMKMKMKMKMKMKMKMKMKM, becomes the alternating current of city promptly into IT mode safe power supply, moreover when isolation transformer MT inserts city three-phase alternating current, three-phase four-wire protection master switch KM does not start at this moment, and therefore isolation transformer MT does not have the unrestrained electric current of surge, and has low pass filtering effect to three-phase four-wire protection master switch contactor KM has lack looks or lacks zero line protect function, makes the utility model discloses a more high-efficient safety.
Drawings
FIG. 1 is a schematic diagram of an intelligent high-efficiency safe electric device of the present invention;
fig. 2 is a three-phase four-wire protection circuit diagram.
Description of the reference numerals: 1. an isolating knife fuse switch QS-FU; 2. dual power automatic transfer device ATSE; 3. an isolation transformer MT; 4. a three-phase four-wire protection main switch contactor KM; 41. a three-phase four-wire protection circuit; 42. a contactor coil; 5. a molded case reclosing circuit breaker MCCB-ARD; 6. a miniature reclosing circuit breaker MCB-ARD; 7. an electric interface for fire safety, 3EN + N; 8. and the singlechip MCU.
Detailed Description
The present invention relates to a smart high-efficiency safety electric device, which is described in detail with reference to fig. 1 to 2.
An intelligent high-efficiency safe power utilization device comprises an isolation knife fuse switch QS-FU1, a dual-power automatic switching device ATSE2, an isolation transformer MT3 and a three-phase four-wire protection main switch contactor KM4; the isolating knife-fuse switch QS-FU1 is connected with a three-phase alternating current in the city, wherein a fuse of the isolating knife-fuse switch QS-FU1 plays a role of primary overcurrent protection in the power supply process, wherein the dual-power automatic switching device ATSE2 is PC grade, and the isolating transformer MT is 1:1 delta-Y type isolation transformer.
The three-phase alternating current in the city is communicated with the input end of an isolation transformer MT3 through a dual-power automatic switching device ATSE2, the dual-power automatic switching device ATSE2 supplies power to a normal main power supply, and the main power supply is switched to a qualified standby power supply immediately according to setting when the main circuit is in phase failure, overvoltage, undervoltage or other faults, so that the power supply is uninterrupted, and when the main power supply is recovered to be normal, the main power supply can be automatically recovered.
The isolation transformer MT3 converts the three-phase alternating current in the city into three-phase four-wire alternating current, namely, the three-phase alternating current in the city is converted into an IT mode for safe power supply; the isolation transformer MT3 outputs three-phase four-wire alternating current which is divided into an alternating voltage 380V three-phase output line connected with three-phase power equipment and an alternating voltage 220V single-phase output line of a plurality of single-phase loads through a three-phase four-wire protection main switch contactor KM4, wherein the alternating voltage 380V three-phase output line is connected with the three-phase power equipment through a plastic case reclosing circuit breaker MCB-ARD5, the plastic case reclosing circuit breaker MCB-ARD5 has the short circuit and overload protection functions, the alternating voltage 220V single-phase output line is connected with the single-phase loads through a small reclosing circuit breaker MCCN-ARD6, and the small reclosing circuit breaker MCCN-ARD6 has the short circuit and overload protection functions, the electricity safety performance is further improved, and multiple protection is realized.
Three-phase four-wire protection master switch contactor KM4 includes contactor KM41 and the three-phase four-wire protection circuit 42 that whether control contactor KM41 released, follow fig. 2, three-phase four-wire protection circuit 42 includes live wire L1 respectively, live wire L2, the diode D1 that live wire L3 is connected, diode D2, diode D3, live wire L1, live wire L2, live wire L3 passes through diode D1 respectively, diode D2, diode D3 half-wave rectification forms three-phase half-wave direct current loop to power supply zero line N through one-way silicon controlled rectifier SCR and contactor KM41 coil, wherein set up an emergent button SB2 at one-way silicon controlled rectifier SCR's input, SB1 is the start button, R1, R2, R3 is current-limiting resistor, electrolytic capacitor C sets up the release time delay of contactor KM with the cooperation of resistance R3.
The three-phase live wire is connected with a one-way Silicon Controlled Rectifier (SCR) through an emergency button SB2 through diode half-wave rectification, the one-way Silicon Controlled Rectifier (SCR) is connected with a zero line through a contactor KM41, if any phase or N line is broken, the half-wave direct current is discontinuous, the one-way Silicon Controlled Rectifier (SCR) is cut off, the contactor KM41 releases, and an alternating voltage 380V three-phase output line and an alternating voltage 220V single-phase output line are cut off, so that phase or zero line loss protection is realized.
Be provided with fire control safety power consumption interface 7 at three-phase four-wire protection main switch contactor KM's output, this fire control safety power consumption interface 7 is 3EN + N fire control safety power consumption interface, and fire control safety power consumption interface 7 is for the incessant safe power consumption setting of fire control, and this circuit does not receive the restriction of circuit breaker short circuit or overload protection and tripping operation.
The utility model discloses a city three-phase alternating current is through dual supply automatic switching device ATSE2 and isolation transformer MT 3's input switch-on, takes place to lack looks, excessive pressure, under-voltage or other trouble as the circuit, immediately switches to qualified stand-by power supply, guarantees that the power supply is incessant, moreover isolation transformer MT3 output three-phase four-wire alternating current falls into the alternating voltage 220V single-phase output line of alternating voltage 380V three-phase output line and a plurality of single-phase load that is connected with three-phase power equipment through three-phase four-wire protection master switch contactor KM4, consequently during isolation transformer MT3 inserts city three-phase alternating current, three-phase four-wire protection master switch contactor KM4 did not start at this moment, consequently isolation transformer MT3 surge current-free to cancel current soft starter to three-phase four-wire protection master switch contactor KM4 has lack looks or lacks zero line protect function, makes the utility model discloses a more high-efficient safety.
In order to further improve the intelligent high-efficiency safe electricity utilization of the electricity utilization system, a single chip microcomputer 8 is arranged on the system, the single chip microcomputer 8 carries out calculation analysis or comparison analysis on detected voltage and current sampling, sensing data of temperature, humidity, smoke and arc faults, a load state, a power factor lambda of a transformer and three-phase unbalance, and outputs various instructions according to an analysis result to control whether a small reclosing circuit breaker MCCN-ARD6 of an alternating voltage 220V single-phase output line and a plastic shell reclosing circuit breaker MCB-ARD5 of an alternating voltage 380V three-phase output line are tripped or closed. For example: the single-phase undervoltage is adjusted, and the load is reduced by instructing the MCCN-ARD6 of the N small-sized reclosing breakers of the phase to trip through an OC interface; for example, single-phase overvoltage can be generated, the N small reclosing breakers MCCN-ARD6 of the phase can be instructed to be closed through the OC interface, or the energy storage equipment is connected to increase the load. N controllable plastic case reclosing circuit breakers MCB-ARD5 can also be instructed to open or close to adjust overload or no-load of a transformer (MK). Therefore, the instruction result can lead the three-phase power supply to tend to be balanced, directly improves the power factor lambda of the transformer (MK), improves the quality of electric energy and realizes high-efficiency power supply. The whole operation process and result of the single chip microcomputer 8 can be stored and displayed, and can also be uploaded to a detection platform for early warning or manual interference, and can also be uploaded to a cloud platform through DTU communication to realize remote control.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides a high-efficient safe consumer of wisdom, characterized by: the device comprises an isolation knife-fuse switch QS-FU, a dual-power automatic switching device ATSE, an isolation transformer MT and a three-phase four-wire protection main switch contactor KM;
the isolating knife-fuse switch QS-FU is connected with a city three-phase alternating current, the city three-phase alternating current is communicated with the input end of an isolating transformer MT through a dual-power automatic switching device ATSE, and the isolating transformer MT converts the city three-phase alternating current into a three-phase four-wire alternating current;
the three-phase four-wire alternating current output by the isolation transformer MT is divided into an alternating voltage 380V three-phase output line connected with three-phase power equipment and a plurality of single-phase load alternating voltage 220V single-phase output lines through a three-phase four-wire protection main switch contactor KM.
2. The intelligent high-efficiency safe electric equipment as claimed in claim 1, wherein: the alternating voltage 380V three-phase output line is connected with three-phase power equipment through a plastic case reclosing circuit breaker MCCB-ARD, the alternating voltage 220V single-phase output line is provided with a plurality of single-phase loads, and each single-phase load is connected with the alternating voltage 220V single-phase output line through a small reclosing circuit breaker MCB-ARD.
3. The intelligent high-efficiency safe electric equipment as claimed in claim 1, wherein: three-phase four-wire protection master switch contactor KM includes the three-phase four-wire protection circuit whether contactor KM releases, three-phase four-wire protection circuit includes live wire L1 respectively, live wire L2, the diode D1 that live wire L3 is connected, diode D2, diode D3, live wire L1, live wire L2, live wire L3 passes through diode D1 respectively, diode D2, diode D3 half-wave rectification passes through one-way silicon controlled rectifier and contactor KM coil to power supply zero line N formation three-phase half-wave direct current return circuit, live wire L1, live wire L2, live wire L3 lacks any looks or N line and opens circuit, then this half-wave direct current is discontinuous, and one-way silicon controlled rectifier SCR ends, contactor KM release cutting circuit, thereby realize lacking looks or lacking zero line protection, still be provided with SB1 at three-phase four-wire protection circuit and be the start-up button, SB2 is the scram button, R1, R2, R3 is the resistance current-limiting, electrolytic capacitor C sets up the release time delay that makes contactor KM with resistance R3 cooperation.
4. The intelligent high-efficiency safe electric equipment as claimed in claim 1, wherein: the dual-power automatic switching device ATSE is connected with the fire safety power utilization interface, so that uninterrupted safety power utilization for fire fighting is realized, and a breaker is not arranged at the fire safety power utilization interface, so that the dual-power automatic switching device is not limited by tripping due to short circuit or overload protection of the breaker.
5. The intelligent high-efficiency safe electric equipment as claimed in claim 2, wherein: the single chip microcomputer controls whether the small reclosing circuit breaker MCB-ARD of the single-phase output line with the alternating voltage of 220V and the plastic shell reclosing circuit breaker MCCB-ARD of the three-phase output line with the alternating voltage of 380V trip or close by carrying out calculation analysis or comparison analysis on detected voltage and current sampling, sensing data of temperature, humidity, smoke and arc faults, a load state, a power factor lambda of a transformer and three-phase unbalance and outputting various instructions according to analysis results.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222494675.9U CN218335421U (en) | 2022-09-19 | 2022-09-19 | High-efficient safe consumer of wisdom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222494675.9U CN218335421U (en) | 2022-09-19 | 2022-09-19 | High-efficient safe consumer of wisdom |
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| Publication Number | Publication Date |
|---|---|
| CN218335421U true CN218335421U (en) | 2023-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222494675.9U Active CN218335421U (en) | 2022-09-19 | 2022-09-19 | High-efficient safe consumer of wisdom |
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| CN (1) | CN218335421U (en) |
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