CN103546069A - Novel Y-Deltastarting box - Google Patents
Novel Y-Deltastarting box Download PDFInfo
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- CN103546069A CN103546069A CN201310453007.4A CN201310453007A CN103546069A CN 103546069 A CN103546069 A CN 103546069A CN 201310453007 A CN201310453007 A CN 201310453007A CN 103546069 A CN103546069 A CN 103546069A
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- motor
- protector
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- deltastarting
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- Protection Of Generators And Motors (AREA)
- Motor And Converter Starters (AREA)
Abstract
The invention discloses a novel Y-Deltastarting box which comprises a breaker, fuses, a separating brake knob, a switching knob, a time relay, a motor protector, and three sets of alternating current contactors. The motor protector is an electronic motor composite protector, a coil of the electronic motor composite protector is connected with a coil of a contactor KA in parallel, and a normally-closed contact of the electronic motor composite protector is connected in series in a secondary protection circuit. An original thermal relay is replaced by the motor protector of JD 5serial with an integrated mode totally closed structure, and accordingly a three-phase alternating-current motor is protected. The novel Y-Deltastarting box integrates overload, phase lack, interior star triangle phase loss, stall and three-phase imbalance protection and fault and operating characteristic indication functions, and has a fine inverse-time characteristic. The novel Y-Deltastarting box is provided with functions of operating indication, phase loss fault indication and overload alarm, and is convenient to mount and debug, striking and direct, and is quick in fault removing.
Description
Technical field
The present invention relates to a kind of novel Y-△ starter box.
Background technology
Typical asynchronous machine Y-△ reduced-voltage starting is controlled to start in circuit often has the main contact of three groups of A.C. contactors to be connected in major loop, is used for connecting motor stator winding power supply, i.e. star triangle start circuit.As shown in Figure 1; existing star triangle start circuit comprises circuit breaker Q F; fuse FU1, FU2; opening button TA, switch knob HA, time relay sj, three groups of A.C. contactor KY, KA and K △; and existing in overload, in short-circuit protection circuit, motor protecter adopts thermal relay JR mostly; concrete wiring as shown in Figure 1, repeats no more.But in actual applications; during existing employing thermal relay JR protection motor; the disconnected phase of thermal relay, overvoltage, overload protection all can not reach the requirement of protection motor; especially after permanent use; its anti-time limit characteristic reduces greatly, slow in one's movements, accuracy is low, poor reliability, easily causes damage or the damage of motor; electric motor protecting poor effect, can not realize good protection motor.
Summary of the invention
The object of this invention is to provide a kind of novel Y-△ starter box, have extremely good anti-time limit characteristic, good energy saving property, action sensitivity is high, accuracy is high, impact resisting vibrating, reproducible, defencive function is complete, power consumption is little.
The present invention adopts following technical proposals:
A kind of novel Y-△ starter box; comprise circuit breaker; fuse; opening button, switch knob, the time relay, motor protecter, three groups of A.C. contactors; described motor protecter is electron type comprehensive protector of motor; the described coil of electron type comprehensive protector of motor and the coil of contactor are in parallel, and the normally-closed contact of described electron type comprehensive protector of motor is connected in second protection loop.
Described electron type comprehensive protector of motor adopts JD5 serial motors comprehensive protection device.
The present invention is simple in structure; by using the motor protecter of intergration model full-closed structure JD5 series, replace original thermal relay; thereby make three-phase alternating-current motor protect; the present invention integrates the protection of overload, phase shortage, inner star triangle disconnected phase, stall and three-phase imbalance and fault, operation characteristic deixis, and has extremely good anti-time limit characteristic.And the present invention is provided with operation indication, open phase fault is indicated and overload-alarm, Installation and Debugging are convenient, eye-catching directly perceived, fix a breakdown rapidly; Have energy-conservation, be active in one's movements, the advantage such as accuracy is high, impact resisting vibrating, reproducible, defencive function is complete, power consumption is little.
Accompanying drawing explanation
Fig. 1 is existing Y-△ reduced voltage starter circuit theory diagrams;
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
As shown in Figure 2; a kind of novel Y-△ starter box; comprise circuit breaker Q F; fuse FU1, FU2; opening button TA, switch knob HA, time relay sj, motor protecter, three groups of A.C. contactor KY, KA and K △; described motor protecter is electron type comprehensive protector of motor, and the coil of described electron type comprehensive protector of motor and the coil of contactor KA are in parallel, and the normally-closed contact of described electron type comprehensive protector of motor is connected in second protection loop.
Described electron type comprehensive protector of motor adopts JD5 serial motors comprehensive protection device.JD5 serial motors comprehensive protection device has adopted intergration model full-closed structure, for three-phase alternating-current motor is protected.JD5 serial motors comprehensive protection device integrates the protection of overload, phase shortage, inner star triangle disconnected phase, stall and three-phase imbalance and fault, operation characteristic deixis; and there is extremely good anti-time limit characteristic; its disconnected phase fast tripping protection < 2 seconds, overvoltage 1 ~ 40 second (relatively) is transshipped 3 ~ 80 seconds (relatively).The thermal relay of existing use can not be realized.JD5 serial motors comprehensive protection device can also design overcurrent scale and adjust, and has solved many protective devices and has crossed the flow rectifier phenomenon inaccurate, precision is low of adjusting.The present invention is provided with operation indication, open phase fault indication and overload-alarm; and Installation and Debugging are convenient, economize order directly perceived, fix a breakdown rapidly; have energy-conservation, be active in one's movements, the advantage such as accuracy is high, impact resisting vibrating, reproducible, defencive function is complete, power consumption is little.
The present invention adopts potentiometer to quantize setting mode, and the load current value that only need to demarcate according to the motor nameplate protection overload current of adjusting, without operation test-run a machine, can realize accurate static state and adjust.
When motor normally starts, press HA switch knob, ac contactor coil KY obtains electric, by normal open locking contact KY1 and KM1, closes a floodgate, make ac contactor coil KM and time relay coil SJ obtain electric and trigger, when reaching setting-up time value, time delay break SJ1 disconnects, and time closing contact SJ2 is closed, at this moment ac contactor coil KY dead electricity, ac contactor coil K △ obtains electric, completes Y-△ and starts conversion, enters normal operating conditions.When disconnected phase, overcurrent, startup overtime protection appear in motor three phase mains
,during the abnormal operating states such as short circuit, three-phase current unbalance, stall, it is electric that integrated protector for electric motor JD1 obtains, and normally closed contact JD2 disconnects, and ac contactor coil KM dead electricity disconnects motor major loop, fast and reliable ground protection motor.
Integrated protector for electric motor adopts current ratio to control time delay in lower starting process and dodges technology, and when motor starts within the scope of normal starting current ratio, it is effective that the time is dodged in starting; When electric motor starting current ratio exceeds normal starting current multiplying power scope or disconnected phase time, start the time of dodging invalid, motor will be protected fast.
Claims (2)
1. novel Y-△ starter box; comprise circuit breaker; fuse; opening button, switch knob, the time relay, motor protecter, three groups of A.C. contactors; it is characterized in that: described motor protecter is electron type comprehensive protector of motor; the described coil of electron type comprehensive protector of motor and the coil of contactor are in parallel, and the normally-closed contact of described electron type comprehensive protector of motor is connected in second protection loop.
2. novel Y-△ starter box according to claim 1, is characterized in that: described electron type comprehensive protector of motor adopts JD5 serial motors comprehensive protection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310453007.4A CN103546069A (en) | 2013-09-29 | 2013-09-29 | Novel Y-Deltastarting box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310453007.4A CN103546069A (en) | 2013-09-29 | 2013-09-29 | Novel Y-Deltastarting box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103546069A true CN103546069A (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310453007.4A Pending CN103546069A (en) | 2013-09-29 | 2013-09-29 | Novel Y-Deltastarting box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103546069A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655979A (en) * | 2016-03-15 | 2016-06-08 | 厦门大学嘉庚学院 | Device capable of distinguishing overcurrent and overload protection action signals of high-voltage motor and method |
| CN109495022A (en) * | 2018-11-22 | 2019-03-19 | 天津市西青区华兴电机制造有限公司 | A kind of motor start-up procedure protector |
| WO2023066319A1 (en) * | 2021-10-20 | 2023-04-27 | 北京国科诚泰农牧设备有限公司 | Control system for tmr central kitchen |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201113895Y (en) * | 2007-07-18 | 2008-09-10 | 吉林石油集团有限责任公司 | Oil pumping machine double-power automatic switchover energy-saving electrical distribution box |
| EP2088669A2 (en) * | 2008-02-09 | 2009-08-12 | Karlheinz Gerster | Apparatus and method to operate machines at single phase alternating current or three phase alternating current for mortar processing |
| CN202261121U (en) * | 2011-09-26 | 2012-05-30 | 河南省电力公司许昌供电公司 | Motor protection Y-delta starting box |
| CN203596769U (en) * | 2013-09-29 | 2014-05-14 | 国家电网公司 | Novel Y-delta starting box |
-
2013
- 2013-09-29 CN CN201310453007.4A patent/CN103546069A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201113895Y (en) * | 2007-07-18 | 2008-09-10 | 吉林石油集团有限责任公司 | Oil pumping machine double-power automatic switchover energy-saving electrical distribution box |
| EP2088669A2 (en) * | 2008-02-09 | 2009-08-12 | Karlheinz Gerster | Apparatus and method to operate machines at single phase alternating current or three phase alternating current for mortar processing |
| CN202261121U (en) * | 2011-09-26 | 2012-05-30 | 河南省电力公司许昌供电公司 | Motor protection Y-delta starting box |
| CN203596769U (en) * | 2013-09-29 | 2014-05-14 | 国家电网公司 | Novel Y-delta starting box |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655979A (en) * | 2016-03-15 | 2016-06-08 | 厦门大学嘉庚学院 | Device capable of distinguishing overcurrent and overload protection action signals of high-voltage motor and method |
| CN105655979B (en) * | 2016-03-15 | 2018-02-06 | 厦门大学嘉庚学院 | The device and method of high-voltage motor overcurrent and overload protection action signal can be differentiated |
| CN109495022A (en) * | 2018-11-22 | 2019-03-19 | 天津市西青区华兴电机制造有限公司 | A kind of motor start-up procedure protector |
| WO2023066319A1 (en) * | 2021-10-20 | 2023-04-27 | 北京国科诚泰农牧设备有限公司 | Control system for tmr central kitchen |
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Application publication date: 20140129 |