CN201392393Y - Error testing device of transformer - Google Patents

Error testing device of transformer Download PDF

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Publication number
CN201392393Y
CN201392393Y CN200920088988U CN200920088988U CN201392393Y CN 201392393 Y CN201392393 Y CN 201392393Y CN 200920088988 U CN200920088988 U CN 200920088988U CN 200920088988 U CN200920088988 U CN 200920088988U CN 201392393 Y CN201392393 Y CN 201392393Y
Authority
CN
China
Prior art keywords
transformer
circuit
control circuit
input
contactor
Prior art date
Application number
CN200920088988U
Other languages
Chinese (zh)
Inventor
李红增
魏晓耀
范龙菲
Original Assignee
平高集团有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 平高集团有限公司 filed Critical 平高集团有限公司
Priority to CN200920088988U priority Critical patent/CN201392393Y/en
Application granted granted Critical
Publication of CN201392393Y publication Critical patent/CN201392393Y/en

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Abstract

The utility model relates to an error testing device of a transformer, comprising a testing circuit and a control circuit for controlling the on and off of an input power supply of the testing circuit, wherein the testing circuit comprises a voltage regulator; the input end of the voltage regulator is connected with the power supply by a main normally open contact of an alternating current contactor, and the output end thereof is connected with a primary side winding of a current-increasing device or a voltage booster; the output end of a secondary side winding of the current-increasing device or the voltage booster is used for being connected with the primary side of a standard transformer and the primary side of a tested transformer; the testing circuit is provided with a transformer checking instrument; the reference current input end, the error signal input end and the reference voltage input end of the transformer checking instrument are used for being connected with the secondary side of the transformer and the secondary side of the standard transformer; the control circuit consists of an electromagnetic coil of the alternating current contactor and a starting button which are connected in series; two ends of the starting button are connected with another normally open contact of the alternating current contactor in parallel; and two ends of the control circuit are connected with the power supply. The error testing device is used for solving the problem of error measurement of the transformer.

Description

The transformer error proving installation
Technical field
The utility model relates to a kind of transformer error proving installation, belongs to the transformer test technical field.
Background technology
Because current transformer belongs to measurement instrument, in order to guarantee the precision of mutual inductor better, need carry out ratio, angular difference is measured and tested mutual inductor polarity is differentiated to tested mutual inductor and standard mutual inductor.In reality is produced,, need a kind ofly be specifically designed to like this that device that transformer error measures guarantees the precision of tested mutual inductor and to the judgement of mutual inductor polarity in order to satisfy needs to transformer test in enormous quantities.
The utility model content
The purpose of this utility model provides a kind of transformer error proving installation of testing transformer error, with solving the problem that transformer error is measured.
For achieving the above object, the utility model adopts following technical scheme: a kind of transformer error proving installation, this device comprises the control circuit of test circuit and control test circuit input on/off, described test circuit comprises a pressure regulator, the input end of this pressure regulator inserts power supply by the main normally open contact of an A.C. contactor, the former limit winding of current lifting device of its output termination or stepup transformer, the secondary winding output terminal of this current lifting device or stepup transformer is used to insert the former limit of a standard mutual inductor and the former limit of a tested mutual inductor, described test circuit is provided with a mutual-inductor tester, the reference current input end of this mutual-inductor tester and error signal input end and reference voltage input terminal are used to connect the secondary of tested mutual inductor and the secondary of standard mutual inductor, the earth terminal of mutual-inductor tester is used for ground connection, described control circuit is made of solenoid and a start-up circuit series connection of above-mentioned A.C. contactor, power supply is inserted at the two ends of described control circuit, and wherein said start-up circuit is made of another normally open contact parallel connection of a start button and described A.C. contactor.
The solenoid of an overcurrent relay of serial connection in the loop that the former limit of the output of described pressure regulator and current lifting device winding constitutes, a normally closed interlock of described overcurrent relay is serially connected in the described control circuit.
The normally closed interlock of a signal relay of serial connection in the described control circuit is connected on the power supply after the normally open contact series connection of the solenoid of this signal relay and described overcurrent relay.
A normally closed interlock of described A.C. contactor and the circuit of an indicating device series connection formation are connected on the power supply with the 3rd normally open contact of described A.C. contactor and the circuit of another indicating device series connection formation.
Scram button of serial connection in the described control circuit.
The beneficial effects of the utility model are: adopt this test unit only to need the load of tested mutual inductor and corresponding standard mutual inductor and coupling is inserted, utilize mutual-inductor tester to differentiate to the polarity of tested mutual inductor, then ratio, the angular difference of regulation test point are measured, realize standardized operation, improved conventional efficient greatly; Overcurrent relay is set in the metering circuit, when having guaranteed metering circuit input overcurrent, the control circuit input protection equipment of cutting off the electricity supply; Be serially connected in the normally closed interlock of the signal relay in the control circuit and the control circuit of signal relay; can not only play the alarm effect; and can also guarantee when overcurrent that control circuit can disconnect the power supply input of metering circuit; realize second protection; the emergency stop switch that is connected in series in the control circuit can under any circumstance cut off the power supply input of metering circuit simultaneously, has improved the security and the reliability of this device greatly.
Description of drawings
Fig. 1 is the line graph of current transformer error test.
Embodiment
In conjunction with Fig. 1 the transformer error proving installation is described, this device comprises the control circuit of test circuit and control test circuit input on/off, described test circuit comprises pressure regulator TA, its input end inserts power supply by main normally open contact and the circuit breaker Q A of an A.C. contactor KM, the output of described pressure regulator TA is joined by the solenoid of an overcurrent relay KA and the former limit winding of current lifting device SL, the secondary winding of current lifting device SL inserts tested current transformer TX and standard current transformer T0, and an end of the secondary winding of described tested current transformer TX meets the reference current input end T of mutual-inductor tester by a load Z X, the other end meets the error signal input end K of mutual-inductor tester, the reference current input end T of another termination mutual-inductor tester of standard current transformer T0 with an end of described standard current transformer T0 secondary winding 0, another error signal input end D of mutual-inductor tester and earth terminal be ground connection together; Described control circuit is by the normally closed interlock of a signal relay KS, the normally closed interlock of overcurrent relay KA, the solenoid of A.C. contactor KM, a start button SB2 and a scram button SB1 series connection constitute, this control circuit is connected into power supply by fuse FU and circuit breaker Q A, another normally open contact of the two ends of start button SB2 A.C. contactor KM in parallel wherein, the circuit that the 3rd normally open contact of circuit that the normally closed interlock of circuit that the normally open contact series connection of the solenoid of described signal relay KS and overcurrent relay KM constitutes and described A.C. contactor KM and pilot lamp HL1 series connection constitute and described A.C. contactor KM and pilot lamp HL2 series connection constitute is connected in parallel on the control circuit two ends together.
The use of this device is: during test, insert this proving installation with tested current transformer TX with the standard current transformer T0 of its coupling and the load Z of coupling, pressure regulator TA is returned to zero, the circuit breaker Q of closing A, connect the power supply of control circuit, press start button SB2, interface prompt according to mutual-inductor tester, mutual-inductor tester is transferred to current transformer measures the interface, the output voltage of adjusting pressure regulator TA then is to 3% of rated voltage, mutual-inductor tester will be differentiated the polarity of tested current transformer TX, if incorrect polarity is sent alarm, pressure regulator TA is returned to zero, again to tested current transformer TX wiring, if polarity is correct, then adjust pressure regulator TA, make the current lifting device electric current be raised to 1% of tested current transformer rated current, 5%, 20%, 100%, 120%, export the ratio of each test point respectively by mutual-inductor tester, angular difference reaches the purpose that tested current transformer error is measured.
In addition when voltage transformer (VT) is carried out error measure, must be with the former limit of tested voltage transformer (VT) and standard potential transformer and the two ends of receiving stepup transformer secondary winding, the secondary winding of tested voltage transformer (VT) and the secondary winding of standard potential transformer get final product by the requirement access corresponding ports of mutual-inductor tester, and the test operation step is pointed out according to the mutual-inductor tester test interface and carried out.

Claims (5)

1. transformer error proving installation, it is characterized in that: this device comprises the control circuit of test circuit and control test circuit input on/off, described test circuit comprises a pressure regulator, the input end of this pressure regulator inserts power supply by the main normally open contact of an A.C. contactor, the former limit winding of current lifting device of its output termination or stepup transformer, the secondary winding output terminal of this current lifting device or stepup transformer is used to insert the former limit of a standard mutual inductor and the former limit of a tested mutual inductor, described test circuit is provided with a mutual-inductor tester, the reference current input end of this mutual-inductor tester and error signal input end and reference voltage input terminal are used to connect the secondary of tested mutual inductor and the secondary of standard mutual inductor, the earth terminal of mutual-inductor tester is used for ground connection, described control circuit is made of solenoid and a start-up circuit series connection of above-mentioned A.C. contactor, power supply is inserted at the two ends of described control circuit, and wherein said start-up circuit is made of another normally open contact parallel connection of a start button and described A.C. contactor.
2. transformer error proving installation according to claim 1, it is characterized in that: the solenoid of an overcurrent relay of serial connection in the loop that the former limit of the output of described pressure regulator and current lifting device winding constitutes, a normally closed interlock of described overcurrent relay is serially connected in the described control circuit.
3. transformer error proving installation according to claim 1 and 2, it is characterized in that: the normally closed interlock of a signal relay of serial connection in the described control circuit is connected on the power supply after the normally open contact series connection of the solenoid of this signal relay and described overcurrent relay.
4. transformer error proving installation according to claim 3 is characterized in that: a normally closed interlock of described A.C. contactor and the circuit of an indicating device series connection formation are connected on the power supply with the 3rd normally open contact of described A.C. contactor and the circuit of another indicating device series connection formation.
5. transformer error proving installation according to claim 4 is characterized in that: scram button of serial connection in the described control circuit.
CN200920088988U 2009-03-23 2009-03-23 Error testing device of transformer CN201392393Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920088988U CN201392393Y (en) 2009-03-23 2009-03-23 Error testing device of transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920088988U CN201392393Y (en) 2009-03-23 2009-03-23 Error testing device of transformer

Publications (1)

Publication Number Publication Date
CN201392393Y true CN201392393Y (en) 2010-01-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN200920088988U CN201392393Y (en) 2009-03-23 2009-03-23 Error testing device of transformer

Country Status (1)

Country Link
CN (1) CN201392393Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104090254A (en) * 2014-07-04 2014-10-08 天津市百利电气有限公司 Current transformer process error detection device and control method
CN104569896A (en) * 2014-12-11 2015-04-29 许继集团有限公司 Digital signal configuration method of acquisition unit of electronic current transformer
CN109324306A (en) * 2018-12-14 2019-02-12 国家电网有限公司 A kind of GIS device current transformer error test macro and its construction method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104090254A (en) * 2014-07-04 2014-10-08 天津市百利电气有限公司 Current transformer process error detection device and control method
CN104569896A (en) * 2014-12-11 2015-04-29 许继集团有限公司 Digital signal configuration method of acquisition unit of electronic current transformer
CN104569896B (en) * 2014-12-11 2018-06-15 许继集团有限公司 A kind of electronic current mutual inductor collecting unit digital signal configuration method
CN109324306A (en) * 2018-12-14 2019-02-12 国家电网有限公司 A kind of GIS device current transformer error test macro and its construction method

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

Granted publication date: 20100127

Termination date: 20180323

CF01 Termination of patent right due to non-payment of annual fee