CN106018895A - Circuit breaker on-line tripping closing voltage tester voltage regulating device - Google Patents

Abstract

A voltage regulating device for an online tripping and closing voltage tester for a circuit breaker, relating to a voltage regulating device for a voltage tester, which consists of a first input terminal, a second input terminal, an output terminal, a voltage regulating board, a display, a protection board and a synchronous test The board is composed of a first output terminal, a display and a synchronous test board on the voltage regulating board, a switch is provided on the wire between the first output terminal and the voltage regulating board, and one end of the synchronous testing board is connected to the voltage regulating board through a wire , the other end of the synchronous test board is connected to the display through wires, a second input terminal is provided on the synchronous test board, one side of the protection board is connected to the voltage regulating board through wires, and a switch, the other side of the protection board is provided with an output terminal, and the wire between the protection board and the output terminal is provided with a switch; There is no need to remove the secondary line during the test, which eliminates the phenomenon of misconnection of the line.

Description

A voltage regulating device for circuit breaker on-line tripping and closing voltage tester

【Technical field】

The invention relates to a voltage regulating device for a voltage tester, in particular to a voltage regulating device for an on-line tripping and closing voltage tester for a circuit breaker.

【Background technique】

It is well known that the tripping and closing voltage test of a circuit breaker is one of the key test items to ensure that the circuit breaker can operate reliably. The current method is to use a circuit breaker tester to perform a tripping and closing voltage test after the tripping and closing circuit is removed. This method not only requires the removal and restoration of the secondary line, but also some internal secondary circuits of circuit breakers have operation locks, which need to be manually released at the switch mechanism during testing, which not only has low work efficiency but also causes certain safety for people. Hidden dangers, in addition, when testing on site, the power supply of the current test device is AC, so an external AC power supply is also needed, which brings great trouble to the test.

【Content of invention】

In order to overcome the deficiencies in the background technology, the present invention discloses a voltage regulating device for a circuit breaker on-line tripping and closing voltage tester. The present invention achieves rapid , Efficiently carry out the purpose of circuit breaker tripping and closing voltage test.

In order to realize the described invention object, the present invention adopts following technical scheme:

A voltage regulating device for circuit breaker on-line tripping and closing voltage tester, including a first input terminal, a second input terminal, an output terminal, a voltage regulating board, a display, a protection board and a synchronous testing board, the first input terminal, the second input terminal Terminal, output terminal, voltage regulating board, display, protection board and synchronous test board are connected by wires, the first output terminal, display and synchronous test board are arranged on the voltage regulating board, the first output terminal and voltage regulating board There is a switch on the wire between them, one end of the synchronous test board is connected to the voltage regulating board through a wire, the other end of the synchronous test board is connected to the display through a wire, and a second input terminal is provided on the synchronous test board. One side is connected with the voltage regulating board through wires, a switch is provided between the protection board and the voltage regulating board, an output terminal is provided on the other side of the protection board, and a switch is provided on the wire between the protection board and the output terminal.

The first input end, the second input end and the output end are single-row pin terminal blocks.

The voltage regulating board is a double-row pin terminal row, and the voltage regulating circuit of the voltage regulating board is composed of an input terminal row P8, an integrated circuit U3, an output terminal row P9, a capacitor C8, a capacitor C9, a capacitor C10, a diode D3, and a Zener diode D4 , triode Q4, triode Q5, potentiometer R8, resistor R6A, resistor R6B and resistor R7, input terminal block P8, output terminal block P9, capacitor C8, capacitor C9 and capacitor C10 are connected to the common ground terminal, Zener diode The anode of D4 is connected to the common ground terminal, the capacitor C8, the capacitor C9 and the capacitor C10 are connected in parallel, the capacitor C8 and the capacitor C9 are arranged between the input terminal block P8 and the integrated circuit U3, the positive pole of the capacitor C9 is connected to the transistor Q4, and the transistor Q4 is connected to the A resistor R6A is set between the common ground terminals, the anode of the capacitor C10 is connected to the resistor R6B, and the resistor R6B is connected to the transistor Q5, and the transistor Q5 is respectively connected to the input terminal block P8 and the output terminal of the integrated circuit U3, and the Zener diode The anode of D4 is connected to one end of the potentiometer R8, and the other end of the potentiometer R8 is respectively connected to the resistor R7 and the integrated circuit U3, and the resistor R7 is connected to the input terminal block P8 through the diode D3.

The synchronous test board is composed of a terminal block P9, a relay K1, a relay K2, a switch S1 and a switch S2, the terminal block P9 is respectively connected to the current input terminal through the relay K1 and the relay K2, and the switch S7 is respectively arranged on the relay K1 and the relay K2 And the switch S8, the switch S7 and the switch S8 are connected in parallel with the current output end and between the current output end.

Owing to adopting above-mentioned technical scheme, the present invention has following beneficial effect:

The voltage regulating device of a circuit breaker on-line tripping and closing voltage tester according to the present invention includes a first input terminal, a second input terminal, an output terminal, a voltage regulating board, a display, a protection board and a synchronous testing board. A display, a protection board and a synchronous test board are arranged on the pressure plate to achieve the purpose of quickly and efficiently testing the circuit breaker tripping and closing voltage; the invention has simple structure and convenient operation, and can not only quickly and efficiently test On-line test, and there is no need to remove the secondary line during the test, which eliminates the phenomenon of misconnection of the line, which reduces the hidden danger of personal safety. In addition, it does not need to connect an external AC power supply during the test, which greatly shortens the test time and improves work efficiency.

【Description of drawings】

Fig. 1 is a schematic block diagram of the present invention;

Fig. 2 is the overall circuit schematic diagram of the present invention;

Fig. 3 is a schematic diagram of a voltage regulating board circuit of the present invention;

In the figure: 1. The first input terminal; 2. The voltage regulating board; 3. The display; 4. The protection board; 5. The output terminal; 6. The second input terminal; 7. The synchronous test board.

【detailed description】

The present invention can be explained in detail through the following examples, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

A circuit breaker on-line tripping and closing voltage tester voltage regulating device described in conjunction with accompanying drawings 1 to 3, including a first input terminal 1, a second input terminal 6, an output terminal 5, a voltage regulating board 2, a display 3, a protection The board 4 and the synchronous test board 7, the first input terminal 1, the second input terminal 6, the output terminal 5, the voltage regulating board 2, the display 3, the protection board 4 and the synchronous test board 7 are connected by wires, and the voltage regulation The board 2 is provided with a first output terminal 1, a display 3 and a synchronous test board 7, a switch is provided on the wire between the first output terminal 1 and the voltage regulating board 2, and one end of the synchronous test board 7 is connected to the voltage regulating board 2 through the wire. The other end of the synchronous test board 7 is connected to the display 3 through a wire, and a second input terminal 6 is provided on the synchronous test board 7. One side of the protection board 4 is connected with the voltage regulating board 2 through a wire, and the protection board A switch is provided between 4 and the voltage regulating board 2, an output terminal 5 is provided on the other side of the protection board 4, and a switch is provided on the wire between the protection board 4 and the output terminal 5; the first input terminal 1, the second Both the input terminal 6 and the output terminal 5 are single-row pin terminal rows; the voltage regulating board is a double-row pin terminal row, and the voltage regulating circuit of the voltage regulating board is composed of input terminal row P8, integrated circuit U3, output terminal row P9, Capacitor C8, capacitor C9, capacitor C10, diode D3, Zener diode D4, transistor Q4, transistor Q5, potentiometer R8, resistor R6A, resistor R6B and resistor R7, input terminal row P8, output terminal row P9, capacitor C8, One end of the capacitor C9 and capacitor C10 is connected to the common ground terminal, the anode of the Zener diode D4 is connected to the common ground terminal, the capacitor C8, the capacitor C9 and the capacitor C10 are connected in parallel, and the capacitor C8 and the capacitor C9 are set at the input terminal block P8 and the integrated circuit Between U3, the anode of capacitor C9 is connected to transistor Q4, and resistor R6A is set between transistor Q4 and the common ground terminal. The positive electrode of capacitor C10 is connected to resistor R6B, and resistor R6B is connected to transistor Q5. The terminal block P8 is connected to the output terminal of the integrated circuit U3, the anode of the Zener diode D4 is connected to one end of the potentiometer R8, and the other end of the potentiometer R8 is respectively connected to the resistor R7 and the integrated circuit U3, and the resistor R7 passes through the diode D3 It is connected with the input terminal block P8; the synchronous test board is composed of a terminal block P9, a relay K1, a relay K2, a switch S1 and a switch S2, and the terminal block P9 is respectively connected to the current input terminal through the relay K1 and the relay K2, and the relay K1 A switch S7 and a switch S8 are arranged on the relay K2 respectively, and the switch S7 and the switch S8 are connected in parallel with the current output end and between the current output end.

Implement a circuit breaker on-line tripping and closing voltage tester voltage regulating device according to the present invention. When in use, the DC input is connected to the voltage regulating board 2 and the synchronous testing board 7 respectively through the terminal block P1, and the switches S4 and Controlled by switch S3, the pressure regulating board 2 is connected to the protection board through the parallel switch S2 and switch S5, and a display 3 is provided between the switch S5 and the protection board, and the display 3 can display relevant test data, and the protection board 4 The output terminals respectively output the closing line, opening line and public line and are respectively connected to the output terminal block P2. The closing line, opening line and public line are respectively provided with a switch S1 and a combination switch S6, and the switch S1 controls the protection board 4 With the output circuit of the synchronous test board 7, the combination switch S6 controls the opening line and the public line output by the protection board 4. The current of this tester is expanded to about 4A. The linear circuit is not only easy to adjust but also does not cause any interference to the DC circuit. It is the key to online testing. The voltage regulation range is continuously adjustable between DC 55-170V, which can meet the requirement of 30%-65% of the tripping and closing voltage of 220V stipulated in the inspection regulations. The tripping and closing coil is inductive in nature. During the test, a high-voltage back EMF will be generated, which poses a certain threat to the components in the operation box. The protection module effectively solves this problem and controls the back EMF at about 250V, thereby ensuring the safety of the operation circuit; The internal failure of the tester causes the circuit breaker to operate abnormally. When the circuit breaker is tested at the same time, the external tester starts the internal relay. After the test, the inherent action time of the relay is 3ms. On the tripping and closing coil, the accuracy of the test is guaranteed. The DC input first passes through the switch S4 circuit breaker, and is selected by the handle of the switch S3 to perform voltage regulation or full voltage test. When voltage regulation is selected, the display 3 will display the voltage value, which is divided into Closing test or tripping test, the voltage passes through the protection board 4 and then is output by the output circuit breaker to the terminal block tripping and closing voltage wiring, without removing the circuit wiring, the voltage is adjusted by the potentiometer R8, and the voltage adjustment range of the integrated circuit U3 is 1.25 Between -125V, the voltage is suspended to the minimum value of about 55V through the Zener diode D4, and the upper limit is 175V. The current is output after being expanded by two 2N3055. The circuit breaker trips and closes with full voltage, the switch synchronization tester starts the switch closing relay K1, the switch opening relay K2, the relay K1 and the relay K2 apply the operating voltage directly to the tripping and closing coil through the protection board 4, and the switch S7 , The switch S8 button can directly apply the operating voltage to the trip coil, so as to directly open and close the circuit breaker.

The unspecified part of the present invention is the prior art. Although the present invention has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches for realizing the technical solution. Those skilled in the art should understand that without departing from the spirit and scope of the present invention defined by the appended claims, various changes can be made to the present invention in terms of form and details, all of which are within the protection scope of the present invention.

Claims (4)

1. A circuit breaker on-line tripping and closing voltage tester voltage regulating device, including a first input terminal, a second input terminal, an output terminal, a voltage regulating board, a display, a protection board and a synchronous test board, the first input terminal, the second The two input terminals, output terminals, voltage regulating board, display, protection board and synchronous test board are connected by wires, and the characteristics are: the first output terminal, display and synchronous test board are arranged on the voltage regulating board, and the first There is a switch on the wire between the output terminal and the voltage regulating board, one end of the synchronous test board is connected to the voltage regulating board through a wire, the other end of the synchronous test board is connected to the display through a wire, and a second input is provided on the synchronous test board One side of the protection board is connected to the voltage regulating board through wires, a switch is provided between the protection board and the voltage regulating board, the other side of the protection board is provided with an output terminal, and the wire between the protection board and the output terminal is With switch. 2. A circuit breaker online tripping and closing voltage tester voltage regulating device according to claim 1, characterized in that: the first input terminal, the second input terminal and the output terminal are all single-row pin terminal blocks. 3. The voltage regulating device of a circuit breaker on-line tripping and closing voltage tester according to claim 1, characterized in that: the voltage regulating board is a double-row pin terminal row, and the voltage regulating line of the voltage regulating board is connected to the input terminal Row P8, integrated circuit U3, output terminal row P9, capacitor C8, capacitor C9, capacitor C10, diode D3, Zener diode D4, transistor Q4, transistor Q5, potentiometer R8, resistor R6A, resistor R6B and resistor R7, input Terminal block P8, output terminal block P9, capacitor C8, capacitor C9 and one end of capacitor C10 are connected to the common ground terminal, the anode of Zener diode D4 is connected to the common ground terminal, capacitor C8, capacitor C9 and capacitor C10 are connected in parallel, and capacitor C8 The capacitor C9 is set between the input terminal block P8 and the integrated circuit U3, the anode of the capacitor C9 is connected to the transistor Q4, the resistor R6A is arranged between the transistor Q4 and the common ground terminal, the positive electrode of the capacitor C10 is connected to the resistor R6B, and the resistor R6B Then connect with the triode Q5, the triode Q5 is respectively connected with the input terminal block P8 and the output end of the integrated circuit U3, the anode of the Zener diode D4 is connected with one end of the potentiometer R8, and the other end of the potentiometer R8 is respectively connected with the resistor R7 It is connected with the integrated circuit U3, and the resistor R7 is connected with the input terminal block P8 through the diode D3. 4. A circuit breaker online tripping and closing voltage tester voltage regulating device according to claim 1, characterized in that: the synchronous test board is composed of terminal block P9, relay K1, relay K2, switch S1 and switch S2 , the terminal block P9 is connected to the current input terminal through the relay K1 and the relay K2 respectively, and the switch S7 and the switch S8 are arranged on the relay K1 and the relay K2 respectively, and the switch S7 and the switch S8 are connected in parallel between the current output terminal and the current output terminal.