CN2867665Y - Delta-to-star switching energy conservation distribution box - Google Patents

Delta-to-star switching energy conservation distribution box Download PDF

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Publication number
CN2867665Y
CN2867665Y CN 200520036907 CN200520036907U CN2867665Y CN 2867665 Y CN2867665 Y CN 2867665Y CN 200520036907 CN200520036907 CN 200520036907 CN 200520036907 U CN200520036907 U CN 200520036907U CN 2867665 Y CN2867665 Y CN 2867665Y
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CN
China
Prior art keywords
control unit
measurement
motor
contactor
inputs
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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.)
Expired - Fee Related
Application number
CN 200520036907
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Chinese (zh)
Inventor
刁志广
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Individual
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Individual
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Priority to CN 200520036907 priority Critical patent/CN2867665Y/en
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Publication of CN2867665Y publication Critical patent/CN2867665Y/en
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Expired - Fee Related legal-status Critical Current

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Abstract

An energy-saving distribution box based on star-delta conversion consists of a measurement and control unit, an air switch QF, three current transformers L, three contacts KM, and a fuse unit FU. The three current transformers L1, L2 & L3 are connected with the air switch at one ends and with the input end of the measurement and control unit through three normally-open points of the first contact KM1, and the output end of the measurement and control unit is connected with the input end of a motor. The three normally-open points of the third contact KM3 are respectively connected with the first, second and third input ends of the motor at one ends and with the fourth, fifth and sixth input ends of the motor at the other ends. The three normally-open points of the second contact KM2 are shorted at one ends and are connected with the fourth, fifth and sixth input ends of the motor M and with the three normally-open points of the third contact KM3 at the other ends. The utility model has less elements, simple circuit, low cost, high adaptability, and high power saving rate, and its control mode can be adjusted according to the types of loads and the working requirement.

Description

Angle star conversion energy-conserving distribution box
Technical field
The power distribution equipment that belongs to of the present utility model, particularly a kind of angle star conversion energy-conserving distribution box.
Background technology
Present known star-delta starter is become by circuit structures such as case, contactor, the time relay, signal lamp, ammeter, button and instrument transformers.Because motor is when light the sanction; the power savings that delta connection is changed into star-star connection is remarkable; the scheme of the star angularpitch energy motor of therefore developing is a lot; but ubiquitous problem is that element is too much, complex circuit; different types of load and operating characteristic are not required to be distinguished; therefore bad adaptability lacks comprehensive coordination to aspects such as electric motor protecting operations.
Summary of the invention
The utility model is intended to overcome the deficiencies in the prior art, and a kind of angle star conversion energy-conserving distribution box is provided.
Angle of the present utility model star conversion energy-conserving distribution box is made up of measurement and control unit, air switch QF, current transformer L, contactor KM and protector FU.Contactor KM is by KM 1, KM 2, KM 3Form contactor KM 1Two of coil terminate at measure and the ends A of control unit, B on, contactor KM 2The output C that one of coil terminates at measurement and control unit goes up, KM 2Another termination KM 3Normally closed contact KM 34An end, KM 34Another termination KM 2Normally closed end points KM 24An end, KM 24Another termination KM 3One end of coil, KM 3On another termination measurement of coil and the output D of control unit, KM 34With KM 24Tie point be connected with control unit with connecing to measure; Button SB one end is through protector FU and current transformer L 1Connection, the other end are connected with control unit with measurement.Current transformer L 1, L 2, L 3One end is connected with air switch QF, the other end is through contactor KM 1Three normal battle KM 11, KM 12, KM 13Be connected the output E of measurement and control unit with input E, F, the G of measurement and control unit 1, F 1, G 1Be connected with three inputs 1,2,3 of motor M.KM 3Three normal battle KM 31, KM 32, KM 33An end link to each other with three inputs 3,2,1 of motor M respectively, KM 31, KM 32, KM 33The other end respectively three inputs 5,4,6 of motor M link to each other; KM 2Three normal battle KM 21, KM 22, KM 23One end short circuit, the other end connect on three inputs 4,5,6 of motor M respectively, simultaneously respectively with KM 3Three normal battle KM 31, KM 32, KM 33An end link to each other.
Its operation principle is: when pumping-unit motor was loaded approaching or is in nominal load, the Energy-saving box mode of connection was connected into triangle, and every phase winding is drawn two leading-out terminals, and three-phase is drawn six leading-out terminals altogether.When motor institute bringing onto load be less than or equal to nominal load 1/3 the time, the threephase stator winding is connected into star.Like this, the stator winding voltage and current that is connected into star all has only 1/  times of triangle connection, again since triangle when connecting winding current be 1/  of line current, so the line current during the star operation only be connected into triangle when directly moving line current 1/3.Because starting torque M QSquare U of direct ratio and voltage 2, M QAlso reduce to 1/3 of dihedral operation, just be suitable for the situation of most pumping-unit motor underloadings.When load increases above set point, can automatically switch to normal operating condition.
Angle of the present utility model star conversion energy-conserving distribution box element is few, circuit is simple, cost is low, adaptability is strong, power saving rate is high, can adjust control mode according to loading type and job requirement.
Description of drawings
Figure of description is the electrical block diagram of angle of the present utility model star conversion energy-conserving distribution box.
Execution mode
In conjunction with the accompanying drawings as can be known, angle of the present utility model star conversion energy-conserving distribution box is made up of measurement and control unit, air switch QF, current transformer L, contactor KM and protector FU.Wherein, contactor KM is by KM 1, KM 2, KM 3Form contactor KM 1Two of coil terminate at measure and the ends A of control unit, H on, contactor KM 2The output C that one of coil terminates at measurement and control unit goes up, KM 2Another termination KM 3Normally closed contact KM 34An end, KM 34Another termination KM 2Normally closed end points KM 24An end, KM 24Another termination KM 3One end of coil, KM 3On another termination measurement of coil and the output D of control unit, KM 34With KM 24Tie point be connected with control unit with connecing to measure.Button SB one end is through protector FU and current transformer L 1Connection, the other end are connected with control unit with measurement; Current transformer L 1, L 2, L 3One end is connected with air switch QF, the other end is through contactor KM 1Three normal battle KM 11, KM 12, KM 13Be connected the output E of measurement and control unit with input E, F, the G of measurement and control unit 1, F 1, G 1Be connected with three inputs 1,2,3 of motor M; KM 3Three normal battle KM 31, KM 32, KM 33An end link to each other with three inputs 3,2,1 of motor M respectively, KM 31, KM 32, KM 33The other end respectively three inputs 5,4,6 of motor M link to each other; KM 2Three normal battle KM 21, KM 22, KM 23One end short circuit, the other end connect on three inputs 4,5,6 of motor M respectively, simultaneously respectively with KM 3Three normal battle KM 31, KM 32, KM 33An end link to each other.

Claims (1)

1, angle star conversion energy-conserving distribution box is made up of measurement and control unit, air switch QF, current transformer L, contactor KM and protector FU, it is characterized in that contactor KM is by KM 1, KM 2, KM 3Form contactor KM 1Two of coil terminate at measure and the ends A of control unit, B on, contactor KM 2The output C that one of coil terminates at measurement and control unit goes up, KM 2Another termination KM 3Normally closed contact KM 34An end, KM 34Another termination KM 2Normally closed end points KM 24An end, KM 24Another termination KM 3One end of coil, KM 3On another termination measurement of coil and the output D of control unit, KM 34With KM 24Tie point be connected with control unit with connecing to measure; Button SB one end is through protector FU and current transformer L 1Connection, the other end are connected with control unit with measurement; Current transformer L 1, L 2, L 3One end is connected with air switch QF, the other end is through contactor KM 1Three normal battle KM 11, KM 12, KM 13Be connected the output E of measurement and control unit with input E, F, the G of measurement and control unit 1, F 1, G 1Be connected with three inputs 1,2,3 of motor M; KM 3Three normal battle KM 31, KM 32, KM 33An end link to each other with three inputs 3,2,1 of motor M respectively, KM 31, KM 32, KM 33The other end respectively three inputs 5,4,6 of motor M link to each other; KM 2Three normal battle KM 21, KM 22, KM 23One end short circuit, the other end connect on three inputs 4,5,6 of motor M respectively, simultaneously respectively with KM 3Three normal battle KM 31, KM 32, KM 33An end link to each other.
CN 200520036907 2005-12-20 2005-12-20 Delta-to-star switching energy conservation distribution box Expired - Fee Related CN2867665Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200520036907 CN2867665Y (en) 2005-12-20 2005-12-20 Delta-to-star switching energy conservation distribution box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520036907 CN2867665Y (en) 2005-12-20 2005-12-20 Delta-to-star switching energy conservation distribution box

Publications (1)

Publication Number Publication Date
CN2867665Y true CN2867665Y (en) 2007-02-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200520036907 Expired - Fee Related CN2867665Y (en) 2005-12-20 2005-12-20 Delta-to-star switching energy conservation distribution box

Country Status (1)

Country Link
CN (1) CN2867665Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102624296A (en) * 2011-01-27 2012-08-01 珠海格力电器股份有限公司 Star-delta starting circuit and air conditioner comprising same
CN103809071A (en) * 2012-11-02 2014-05-21 科勒公司 System and method of detecting a wiring configuration for a controlled field alternator
CN103809071B (en) * 2012-11-02 2016-11-30 科勒公司 The detecting system configured for the wiring of controlled field converter and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102624296A (en) * 2011-01-27 2012-08-01 珠海格力电器股份有限公司 Star-delta starting circuit and air conditioner comprising same
CN103809071A (en) * 2012-11-02 2014-05-21 科勒公司 System and method of detecting a wiring configuration for a controlled field alternator
CN103809071B (en) * 2012-11-02 2016-11-30 科勒公司 The detecting system configured for the wiring of controlled field converter and method
US9515592B2 (en) 2012-11-02 2016-12-06 Kohler Co. System and method of detecting a wiring configuration for a controlled field alternator

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20070207

Termination date: 20101220