CN113644556B - But remote control takes auxiliary power supply's block terminal - Google Patents
But remote control takes auxiliary power supply's block terminal Download PDFInfo
- Publication number
- CN113644556B CN113644556B CN202110781544.6A CN202110781544A CN113644556B CN 113644556 B CN113644556 B CN 113644556B CN 202110781544 A CN202110781544 A CN 202110781544A CN 113644556 B CN113644556 B CN 113644556B
- Authority
- CN
- China
- Prior art keywords
- phase
- voltage
- power supply
- control
- remote
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to underload or no-load
- H02H3/13—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to underload or no-load for multiphase applications, e.g. phase interruption
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J11/00—Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
Abstract
The invention discloses a remote-control distribution box with an auxiliary power supply, which comprises a distribution box body, a single-phase circuit breaker, a three-phase circuit breaker, an auxiliary power supply module, a distribution control circuit board, an alternating-current contactor, a remote-control power supply switch and an EMI filter. Under the closing state of the single-phase circuit breaker, the AC220V input by the power supply equipment is changed into the DC24V output of the auxiliary power supply, and under the closing state of the three-phase circuit breaker, the power distribution control circuit board controls whether the AC380V input by the power supply equipment is output or not according to the remote/local control state and the power-on signal state fed back by the loop control equipment. The invention has two states of remote control and local control, and can output DC24V when AC380V is not output, thereby improving the safety and convenience of use.
Description
Technical Field
The invention belongs to the electrical design technology, and particularly relates to a distribution box with an auxiliary power supply capable of being remotely controlled.
Background
The distribution box is formed by assembling switch equipment, display instruments, electrical appliances, control equipment and the like into a metal box body according to requirements. It is responsible for distributing three-phase alternating current (AC 380V) or two-phase alternating current (AC 220V) from the power station to the back-end power unit on demand and providing control and protection.
The high-power equipment such as the radar, the jammer and the like usually adopts the loop control device to dissipate heat, and the loop control device needs to be ensured to be normal before the equipment is powered on, so that the loop control equipment needs to be powered on in advance, and the equipment is powered on after the condition that the loop control equipment is normal is determined.
Current distribution boxes generally only distribute one type of alternating current and do not have an auxiliary power function.
Disclosure of Invention
The invention provides a distribution box with an auxiliary power supply capable of being remotely controlled.
The technical scheme for realizing the invention is as follows: the utility model provides a but block terminal of auxiliary power is taken in remote control, includes block terminal body, single-phase circuit breaker, three-phase circuit breaker, auxiliary power module, distribution control circuit board, AC contactor, remote control power supply switch, EMI wave filter, remote control power supply switch one end inserts power supply's AC220V voltage, and the other end is connected with EMI wave filter's one end, EMI wave filter's the other end is connected with single-phase circuit breaker's one end, single-phase circuit breaker's the other end is connected with auxiliary power module's input, auxiliary power module's output is as DC24V voltage output and simultaneously for distribution control circuit board provides 24V voltage, an input of auxiliary power module is connected with an input of AC contactor simultaneously, an output of AC contactor connects the one end that three-phase electricity was accomplished the pilot lamp, the other end of three-phase electricity completion pilot lamp with another input of auxiliary power module, three-phase circuit breaker's input is connected with power supply's AC380V voltage output, three-phase circuit breaker's output is connected with other input of AC contactor, the three-phase voltage controller is as the input of three-phase circuit breaker, and the three-phase voltage controller is used for switching device, and the three-phase voltage controller is used for switching off three-phase voltage controller 380 input, and is used for carrying out the signal input signal switching control signal switching, and is closed to the signal input signal to the three-phase voltage controller, and is closed to the signal input signal control signal input signal, and is closed to the signal input signal control signal to the remote control signal switching circuit control signal to the three-phase voltage controller, and is closed.
Compared with the prior art, the invention has the remarkable advantages that:
convenience of power up: after the single-phase circuit breaker and the three-phase circuit breaker are closed, the remote control power-on device can remotely control power-on under the remote control state, and brings convenience for power-on of a system.
Security of power up: all power-on operations do not need to open the distribution box, and the distribution box is directly operated on the box panel, and meanwhile power-on and power-off indication is provided, so that personal safety and system safety during power-on are ensured.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a front view of the present invention.
Detailed Description
As shown in figure 1, the remote-control distribution box with auxiliary power supply comprises a distribution box body, a single-phase circuit breaker, a three-phase circuit breaker, an auxiliary power supply module, a distribution control circuit board, an alternating-current contactor, a remote-control power supply switch and an EMI filter, wherein one end of the remote-control power supply switch is connected with AC220V voltage of power supply equipment, the other end of the remote-control power supply switch is connected with one end of the EMI filter, the other end of the EMI filter is connected with one end of the single-phase circuit breaker, the other end of the single-phase circuit breaker is connected with the input end of the auxiliary power supply module, the output end of the auxiliary power supply module is used as a DC24V voltage output end to simultaneously provide 24V voltage for the distribution control circuit board, one input end of the auxiliary power supply module is simultaneously connected with one input end of the alternating-current contactor, one output end of the alternating-current contactor is connected with one end of a three-phase power supply completion indicator lamp, the other end of the three-phase power-on completion indicator lamp is connected with the other input end of the auxiliary power supply module, the input end of the three-phase circuit breaker is connected with the AC380V voltage output end of the power supply equipment, the output end of the three-phase circuit breaker is connected with the other input ends of the alternating-current contactor, the other output ends of the alternating-current contactor serve as three-phase AC380V voltage output ends, the power distribution control circuit board is used for comprehensively judging and outputting a three-phase output control signal to the alternating-current contactor according to a received remote power-on switch signal, a remote/local control signal, a low-voltage power-on key signal, a low-voltage power-off key signal, a feedback control signal of the ring-control electric equipment and a three-phase signal detection signal, and the alternating-current contactor is used for responding to the three-phase output control signal to be closed or opened so as to control the AC380V output to the electric equipment. The feedback control signal of the environmental-control electric equipment is used for feeding back whether the electric equipment works normally, namely whether the voltage output by the DC24V voltage output end enables the environmental-control electric equipment to work normally. The three-phase signal detection signal is used for feeding back whether the three-phase signal has a phase failure.
Specifically, the distribution control circuit board is connected with the low-voltage on button, the low-voltage off button and the remote/local button, the input end of the distribution control circuit board is connected with a remote power-on switch signal and a loop control power feedback control signal, the distribution control circuit board is connected with the output end of the three-phase circuit breaker and used for detecting whether the three-phase signal is out of phase or not, the distribution control circuit board is provided with an out-of-phase fault output end, and when the three-phase signal is out of phase, the open-phase fault signal is output.
Specifically, the low-voltage on key, the low-voltage off key and the remote/local key are all arranged on the panel of the power distribution box body.
In a further embodiment, as shown in fig. 2, the specific process of the power distribution control circuit board for comprehensively judging and outputting the three-phase output control signal is as follows:
when the AC380V voltage of the accessed power supply equipment is normal, namely the three-phase signal is detected to be high level, and the loop control of the electric equipment is normal, namely the loop control feedback signal is high level, and when the remote/local control is in a remote control state, the power distribution control circuit board does not respond to the low-voltage on key signal and the low-voltage off key signal, and the power distribution control circuit board outputs corresponding three-phase output control signals according to the remote power-on control signal to control the on/off state of the AC contactor, so that the AC380V voltage is powered on/off (the switch is powered on at high level and powered off at low level); when the remote/local control is in the local control state, the distribution box does not respond to the remote power-on control signal, the power-on/power-off is controlled by the low-voltage on/low-voltage off keys, the low-voltage on keys are pressed to power up, and the low-voltage off keys are pressed to power down (the low-voltage on keys are automatically sprung up after being pressed). When the loop control fault of the electric equipment (the loop control feedback level is low) or the input AC380V phase failure (the three-phase signal is detected as the phase failure), the three-phase output control signal is low.
In a further embodiment, a single-phase voltage indicator lamp is connected between the AC220V voltage output end of the power supply device and the remote control power supply switch, and a single-phase power-on completion indicator lamp is connected between the single-phase circuit breaker and the auxiliary power supply module. When the power supply circuit breaker normally works, the single-phase circuit breaker is always in a closed state, the remote control power supply switch is closed, the power supply equipment inputs AC220V voltage from the output port XS2, the single-phase voltage indicator lamp S is lighted, the single-phase power-on completion indicator lamp is lighted, meanwhile, the auxiliary power supply module outputs DC24V from the XS5 socket, and meanwhile, the power distribution control circuit board is supplied with DC24V.
In a further embodiment, the AC380V voltage output end of the power supply device is directly connected with a three-phase ship electricity indicating lamp, when three-phase AC380V is input from the AC380V voltage output end XS1 of the power supply device, the three-phase ship electricity indicating lamps AB, BC and CA are immediately turned on (corresponding to the indication lamps being turned off when phase failure exists), the three-phase circuit breaker with the leakage protection function is closed, the AC380V enters the input end of the AC contactor, and the power distribution control circuit board outputs a three-phase output control signal after comprehensively judging through the working logic shown in fig. 2 according to the received remote power-on switch signal, remote/local control signal, low-voltage power-on key signal, low-voltage power-off key signal and feedback control signal of the environmental-control electric equipment, so as to control the AC380V to be output from XS3 to the electric equipment, and simultaneously, the three-phase power-on completion indicating lamp is turned on.
Specifically, three-phase power-up completion indicator lamp, single-phase voltage indicator lamp, three-phase warship electricity indicator lamp, single-phase power-up completion indicator lamp all set up on the block terminal body panel.
The working process of the invention is as follows:
switching on the AC220V voltage of the power supply equipment, closing a single-phase circuit breaker, closing a remote control power supply switch, turning on a single-phase voltage indicator lamp S, turning on the single-phase power-on completion indicator lamp, outputting DC24V from an XS5 socket by an auxiliary power supply module, and supplying DC24V to a power distribution control circuit board;
switching on the AC380V voltage of the power supply equipment, closing the three-phase circuit breaker, enabling the remote/local control key to be in a local control state, pressing low-voltage on, enabling the AC contactor to be closed, outputting 380V by the AC380V output socket, and simultaneously lighting the three-phase input voltage indicator lamp and the three-phase power-up completion indicator lamp;
the remote/local control key is pressed to be in a remote control state, at the moment, the distribution box does not respond to the low-voltage on/off key any more, when the remote control signal socket inputs a high level, the AC380V output socket outputs 380V voltage, meanwhile, the three-phase input voltage indicating lamp and the three-phase power-on completion indicating lamp are lightened, when the remote control signal socket inputs a low level, the AC380V output socket does not output 380V, meanwhile, the three-phase input voltage indicates to be off, and the three-phase power-on completion indicating lamp is off.
And when the remote control power supply switch positioned on the remote control console is disconnected, the DC24V output socket and the AC380V output socket are simultaneously output-free.
When the three-phase circuit breaker works normally, the three-phase circuit breaker is in a closed state, and the remote control/local control keys are sprung to be in a remote control state, so that remote control power-up can be realized through the keys. The invention has the functions of two-stage remote control output DC24V and AC 380V.
The invention has the advantages of EMI filter and three-phase circuit breaker with leakage protection function, and good electromagnetic compatibility and safety.
Claims (6)
1. The utility model provides a but remote control takes auxiliary power's block terminal, a serial communication port, including block terminal body, single-phase circuit breaker, three-phase circuit breaker, auxiliary power module, distribution control circuit board, AC contactor, remote control power supply switch, EMI wave filter, remote control power supply switch one end inserts the AC220V voltage of power supply unit, and the other end is connected with the one end of EMI wave filter, the other end of EMI wave filter is connected with single-phase circuit breaker's one end, single-phase circuit breaker's the other end is connected with auxiliary power module's input, auxiliary power module's output is as DC24V voltage output and provides 24V voltage for distribution control circuit board simultaneously, auxiliary power module's an input is connected with AC contactor's an input simultaneously, AC contactor's an output is connected three and is added the one end of electricity completion pilot lamp, the other end of the three-phase power-on completion indicator lamp is connected with the other input end of the auxiliary power supply module, the input end of the three-phase circuit breaker is connected with the AC380V voltage output end of the power supply equipment, the output end of the three-phase circuit breaker is connected with the other input ends of the alternating-current contactor, the other output ends of the alternating-current contactor serve as three-phase AC380V voltage output ends, the power distribution control circuit board is used for comprehensively judging and outputting a three-phase output control signal to the alternating-current contactor according to a received remote power-on switch signal, a remote/local control signal, a low-voltage key-on signal, a low-voltage key-off signal, a feedback control signal of the ring-control electric equipment and a three-phase signal detection signal, the alternating-current contactor is used for responding to the three-phase output control signal to be closed or opened so as to control the AC380V to be output to the electric equipment, and the power distribution control circuit board and the low-voltage key-on The low-voltage breaking button is connected with the remote/remote button, the input end of the power distribution control circuit board is connected with a remote power-on switch signal and a loop control power consumption feedback control signal, the power distribution control circuit board is connected with the output end of the three-phase circuit breaker and used for detecting whether the three-phase signal is in a phase-missing state or not, and the power distribution control circuit board is provided with a phase-missing fault output end and outputs a phase-missing fault signal when the three-phase signal is in a phase-missing state.
2. The remotely controllable power distribution box with auxiliary power supply according to claim 1, wherein the low voltage on key, the low voltage off key and the remote/home key are all arranged on a panel of the power distribution box body.
3. The remote-controlled distribution box with auxiliary power supply according to claim 1, wherein the specific process of comprehensively judging and outputting the three-phase output control signal by the distribution control circuit board is as follows:
when the three-phase signal is detected to be high level, the loop control feedback signal is high level, and when the remote/local control is in a remote control state, the power distribution control circuit board outputs a corresponding three-phase output control signal according to the remote power-on control signal to control the on-off state of the alternating current contactor, so that the AC380V voltage on/off is realized; when the remote/local control is in the local control state, the on/off is controlled by a low-voltage on/off key, the low-voltage on key is pressed down, the three-phase output control signal is high level, the AC contactor is closed, the AC380V voltage is powered up, the low-voltage off key is pressed down, the three-phase output control signal is low level, the AC contactor is disconnected, and the AC380V voltage is powered off; when the feedback level of the loop control is low or the three-phase signal is detected as a phase failure, the three-phase output control signal is low.
4. The remote-controlled distribution box with auxiliary power supply according to claim 1, wherein a single-phase voltage indicator lamp is connected between the AC220V voltage output end of the power supply device and the remote-controlled power supply switch, and a single-phase power-up completion indicator lamp is connected between the single-phase circuit breaker and the auxiliary power supply module.
5. The remotely controllable power distribution box with auxiliary power supply according to claim 4, wherein a three-phase ship electricity indicating lamp is connected between the AC380V voltage output end of the power supply device and the three-phase circuit breaker.
6. The remotely controllable power distribution box with auxiliary power supply according to claim 5, wherein the three-phase power-up completion indicator lamp, the single-phase voltage indicator lamp, the three-phase ship electricity indicator lamp and the single-phase power-up completion indicator lamp are all arranged on a panel of the power distribution box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110781544.6A CN113644556B (en) | 2021-07-12 | 2021-07-12 | But remote control takes auxiliary power supply's block terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110781544.6A CN113644556B (en) | 2021-07-12 | 2021-07-12 | But remote control takes auxiliary power supply's block terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113644556A CN113644556A (en) | 2021-11-12 |
| CN113644556B true CN113644556B (en) | 2023-08-22 |
Family
ID=78417048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110781544.6A Active CN113644556B (en) | 2021-07-12 | 2021-07-12 | But remote control takes auxiliary power supply's block terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113644556B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110007817U (en) * | 2010-02-01 | 2011-08-09 | 오길식 | The reduce the structure's electrical power distribution box |
| CN103500906A (en) * | 2013-08-15 | 2014-01-08 | 国网吉林省电力有限公司长春供电公司 | Remote control type power supply changeover device |
| CN203481578U (en) * | 2013-08-15 | 2014-03-12 | 国网吉林省电力有限公司长春供电公司 | Remote-control type power switching device |
| WO2014187133A1 (en) * | 2013-05-22 | 2014-11-27 | 江苏省电力公司常州供电公司 | Intelligent checking system for backup power supply automatic switching apparatus |
| CN104283307A (en) * | 2014-10-29 | 2015-01-14 | 国家电网公司 | Intelligent operation and power distribution integrated high-voltage switch |
| CN104600582A (en) * | 2015-01-26 | 2015-05-06 | 济南高达信息技术有限公司 | Remote control distribution box and application method thereof |
| CN204391515U (en) * | 2015-01-26 | 2015-06-10 | 秦立刚 | A kind of Remote distribution box |
| CN105470930A (en) * | 2015-12-27 | 2016-04-06 | 合肥华耀电子工业有限公司 | Radar intelligent power distribution system |
| CN206573932U (en) * | 2017-03-23 | 2017-10-20 | 山东钢铁股份有限公司 | A kind of electrical equipment control device |
| KR20190016706A (en) * | 2017-08-09 | 2019-02-19 | 이승철 | Energy Saving Distribution Panel Equipped with Remotely Controllable Circuit Breaker and Segregated Uninterruptible Feeder |
| CN110854732A (en) * | 2019-10-28 | 2020-02-28 | 中国人民解放军96782部队 | Covering operation low-voltage numerical control power supply guarantee platform |
| CN111030116A (en) * | 2019-12-03 | 2020-04-17 | 北京特种机械研究所 | Intelligent power supply and distribution system of equipment transport vehicle |
| WO2020155629A1 (en) * | 2019-01-31 | 2020-08-06 | 中车株洲电力机车有限公司 | Power supply protection system for garage |
| CN112202315A (en) * | 2020-09-01 | 2021-01-08 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Power supply system for stepped power-up |
-
2021
- 2021-07-12 CN CN202110781544.6A patent/CN113644556B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110007817U (en) * | 2010-02-01 | 2011-08-09 | 오길식 | The reduce the structure's electrical power distribution box |
| WO2014187133A1 (en) * | 2013-05-22 | 2014-11-27 | 江苏省电力公司常州供电公司 | Intelligent checking system for backup power supply automatic switching apparatus |
| CN103500906A (en) * | 2013-08-15 | 2014-01-08 | 国网吉林省电力有限公司长春供电公司 | Remote control type power supply changeover device |
| CN203481578U (en) * | 2013-08-15 | 2014-03-12 | 国网吉林省电力有限公司长春供电公司 | Remote-control type power switching device |
| CN104283307A (en) * | 2014-10-29 | 2015-01-14 | 国家电网公司 | Intelligent operation and power distribution integrated high-voltage switch |
| CN204391515U (en) * | 2015-01-26 | 2015-06-10 | 秦立刚 | A kind of Remote distribution box |
| CN104600582A (en) * | 2015-01-26 | 2015-05-06 | 济南高达信息技术有限公司 | Remote control distribution box and application method thereof |
| CN105470930A (en) * | 2015-12-27 | 2016-04-06 | 合肥华耀电子工业有限公司 | Radar intelligent power distribution system |
| CN206573932U (en) * | 2017-03-23 | 2017-10-20 | 山东钢铁股份有限公司 | A kind of electrical equipment control device |
| KR20190016706A (en) * | 2017-08-09 | 2019-02-19 | 이승철 | Energy Saving Distribution Panel Equipped with Remotely Controllable Circuit Breaker and Segregated Uninterruptible Feeder |
| WO2020155629A1 (en) * | 2019-01-31 | 2020-08-06 | 中车株洲电力机车有限公司 | Power supply protection system for garage |
| CN110854732A (en) * | 2019-10-28 | 2020-02-28 | 中国人民解放军96782部队 | Covering operation low-voltage numerical control power supply guarantee platform |
| CN111030116A (en) * | 2019-12-03 | 2020-04-17 | 北京特种机械研究所 | Intelligent power supply and distribution system of equipment transport vehicle |
| CN112202315A (en) * | 2020-09-01 | 2021-01-08 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Power supply system for stepped power-up |
Non-Patent Citations (1)
| Title |
|---|
| 浅谈北京地铁14号线辅助供电系统;刘恩朋;;科技视界(05);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113644556A (en) | 2021-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201504117U (en) | Intelligent double-power change-over switch | |
| CN201774226U (en) | Novel electricity-saving leakage detection protecting circuit | |
| EP3988383A1 (en) | Power-supply circuit for charging station | |
| CN206533060U (en) | A kind of multifunctional domestic intelligent distribution box | |
| CN113644556B (en) | But remote control takes auxiliary power supply's block terminal | |
| CN201224367Y (en) | Vehicle-mounted power distribution controller | |
| CN201199587Y (en) | Intelligent, energy-saving, environment protection automatic power socket | |
| CN210486118U (en) | Safety device capable of timing, energy-saving and anti-creeping | |
| CN207320935U (en) | A kind of No. three stand-by power supplies and alternating current switching system | |
| CN219329618U (en) | Distribution box with power supply line switching function and distribution system thereof | |
| CN201444617U (en) | Electromagnetic voltage-stabilizing and electricity-saving device | |
| CN201699423U (en) | Three-phase power voltage stabilizer with three-phase simultaneous output function and three-single-phase independent output function | |
| CN201623379U (en) | Operation controller of switch cabinet | |
| CN205745544U (en) | The dual power source structure of flameproof valve electric device | |
| CN215986949U (en) | Hydraulic electric control device for waste incineration power generation | |
| CN213937011U (en) | Safe power consumption switch board | |
| CN207967939U (en) | A kind of mobile air conditioner unit with dual power supply handoff functionality | |
| CN220066968U (en) | Four-incoming-line one-connection interlocking power distribution system | |
| CN204086861U (en) | A kind of power control circuit | |
| CN220420511U (en) | Air switch with protection against electric shock protection architecture | |
| CN216904280U (en) | Manual integrative block terminal of intelligence | |
| CN210167672U (en) | Intelligent electricity-saving switch screen | |
| CN219018680U (en) | Leading circuit of low-voltage bus tie cabinet control power supply | |
| CN217598495U (en) | Intelligent vehicle combined control device | |
| CN217388230U (en) | Take intelligent PDU circuit of direct function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |