A device for measuring the time delay of the contact of the circuit breaker interlock switch

Abstract

The invention discloses a device for measuring the contact time delay of a circuit breaker interlock switch. A special case is connected to an alternating current power supply, which is connected to a controller switch and is divided into two paths, one of which is connected to a digital electric stopwatch and the other is connected to a switch power input terminal. The switch power output terminal is respectively connected to the circuit breaker controller, the input terminal of a printed board component, a closing button switch and an opening button switch, and the closing button switch and the opening button switch are respectively connected to the printed board component. The printed board component is divided into two paths, one of which is connected to a closing relay and the other is connected to an opening relay. The closing relay and the opening relay are respectively connected to a digital electric stopwatch, which is connected to an interlock component to be measured and is also connected to a negative contact of a ten-thousand-turn switch. When the contact time delay of different interlock switches of the same circuit breaker needs to be measured, the device can be used to realize one-time connection with the product and power-on to quickly measure the delay time of different interlock contacts through a contact conversion switch.

Description

Technical Field

[0001] The invention belongs to the technical field of production detection of mechanical or electrical products, and in particular relates to a device for measuring the time delay of contacts of a circuit breaker interlock switch. Background Art

[0002] With the increase in product assembly volume and higher safety requirements for electricity use, there is a need for a device that can quickly and safely measure the time delay of the contacts of the circuit breaker interlock switch; the device needs to be able to quickly measure the delay time of the contacts of different interlock switches of the same circuit breaker, and quickly connect and disconnect with the circuit breaker through an external plug. Through the adjustment of the gear position of the universal switch, it is necessary to connect the signals of different interlocks to the electric stopwatch, measure the contact delay time of different interlock switches, reduce the measurement time, reduce the probability of accidents caused by wrong pin insertion, and reduce labor intensity; therefore, it is of great significance to produce a product that meets the above conditions. Summary of the invention

[0003] The purpose of the present invention is to provide a device for measuring the contact time delay of a circuit breaker interlock switch. When the contact time delay of different interlock switches of the same circuit breaker needs to be measured, this device can be used to connect and power on the product once, and quickly measure the delay time of different interlock contacts through the contact conversion switch.

[0004] The technical solution adopted by the present invention is a device for measuring the time delay of the contact of the circuit breaker interlock switch, comprising a special chassis, the special chassis is connected to an AC power supply, the AC power supply is connected to a controller switch, the AC power supply is divided into two paths through the controller switch, one path is connected to a 415-type digital electric stopwatch, and the other path is connected to an input end of an S-400-110 switch power supply; the output end of the S-400-110 switch power supply is respectively connected to a circuit breaker FKZ1 controller, an F401F printed circuit board assembly input end, a closing push button switch and an opening push button switch, The closing push button switch and the opening push button switch are respectively connected to the F401F printed circuit board assembly; the output end of the F401F printed circuit board assembly is divided into two paths, one path is connected to the closing relay, and the other path is connected to the opening relay. The closing relay and the opening relay are respectively connected to a 415-type digital electric stopwatch, and the 415-type digital electric stopwatch is connected to the interlocking assembly under test. The 415-type digital electric stopwatch is also connected to the negative contact of the 10-speed 10-way 10,000-turn switch, and the positive contact of the 10-speed 10-way 10,000-turn switch is connected to the positive contact of the interlocking assembly under test of the vacuum circuit breaker to form a loop.

[0005] The present invention is also characterized in that:

[0006] The output end of the S-400-110 switching power supply is divided into four paths. The first path is connected to the circuit breaker FKZ1 controller through a plug and a socket; the second path is connected to the positive and negative poles of the input end of the F401F printed circuit board assembly; the third path is connected to the closing button switch, and the S-400-110 switching power supply is connected to the SWH closing command contact of the F401F printed circuit board assembly through the closing button switch; the fourth path introduces the opening button switch, and the S-400-110 switching power supply is connected to the SWF opening command contact of the F401F printed circuit board assembly through the opening button switch;

[0007] The output end of the F401F printed circuit board assembly is divided into two paths, one connected to the closing relay and the other connected to the opening relay; the first group of normally open contacts of the closing relay is the closing command contacts, and the second group of normally open contacts of the closing relay is connected to the I and III contacts of the 415-type digital electric stopwatch. Similarly, the first group of normally open contacts of the opening relay is the opening command contacts, and the second group of normally open contacts of the opening relay is connected to the I and III contacts of the 415-type digital electric stopwatch. The contacts of table II are connected to the negative poles of all interlocking components under test, the contacts of 415 digital electric stopwatch I are connected to the negative contacts of the interlocking components under test, and the positive contacts of the 10-speed 10-way ...

[0008] Each device is connected by crimping FOT wire rings at both ends of the cable, and the line parallel connection is achieved by adding paralleling pieces to the terminal block;

[0009] The AC power supply is 220V AC.

[0010] The beneficial effects of the present invention are:

[0011] The device of the present application can realize fast measurement of contact delay time of different interlock switches of the same circuit breaker, realize fast connection and separation with the circuit breaker through an external plug, realize signal access to electric stopwatch of different interlocks through gear adjustment of the universal switch, measure contact delay time of different interlock switches, save measurement time, reduce the probability of accidents caused by wrong pin insertion, reduce labor intensity, and realize interlock time delay detection of circuit breakers of other models through adapter plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front panel layout diagram of a device for measuring the time delay of the contacts of a circuit breaker interlock switch of the present invention;

[0013] Figure 2 It is a rear panel layout diagram of a device for measuring the time delay of the contacts of a circuit breaker interlock switch of the present invention;

[0014] Figure 3 It is a bottom plate installation layout diagram of a device for measuring the time delay of the contacts of a circuit breaker interlock switch of the present invention;

[0015] Figure 4 The invention discloses a wiring diagram of a device for measuring the time delay of contacts of a circuit breaker interlock switch. DETAILED DESCRIPTION

[0016] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] The present invention provides a device for measuring the time delay of the contacts of a circuit breaker interlock switch, such as Figure 1 and Figure 4As shown, it includes a special chassis, a 415-type digital electric stopwatch, a 10-speed 10-way 10,000-turn switch, an S-400-110 switching power supply, a self-resetting push button switch, a self-locking push button switch, a relay printed circuit board assembly, and an F401F printed circuit board assembly. This device inputs 220V AC power to this device through a herringbone socket and a matching power cord. After the 220V AC power enters the 3A controller switch, it is divided into two paths. One path is connected to the 415-type digital electric stopwatch to power the electric stopwatch, and the other path is connected to the S-400-110 switching power supply. The S-400-110 switching power supply is connected to convert the 220V AC power into the 110V DC power required by the components. The output of the S-400-110 switching power supply is divided into four paths. The first path is connected to the circuit breaker FKZ1 controller through a plug and a socket; the second path is connected to the positive and negative input terminals of the F401F printed circuit board assembly; the third path is connected to the closing button switch, and the switching power supply is connected to the SWH closing command contact of the F401F printed circuit board assembly through the closing button switch; the fourth path introduces the opening button switch, and the switching power supply is connected to the SWH closing command contact of the F401F printed circuit board assembly through the opening button switch. The opening push button switch is connected to the SWF opening command contact of the F401F printed circuit board assembly; the F401F printed circuit board assembly is further divided into two paths, one connected to the closing relay 1, and the other connected to the opening relay 2; the first group of normally open contacts of the closing relay are the closing command contacts, giving the vacuum circuit breaker a closing command, and the second group of normally open contacts of the closing relay are connected to the 415 type digital electric stopwatch I and III contacts. Similarly, the first group of normally open contacts of the opening relay are the opening command contacts, giving the vacuum circuit breaker an opening command, and the second group of normally open contacts of the opening relay are connected to the 415 type digital electric stopwatch I and III contacts. The open contact is connected to the I and III contacts of the 415 digital electric stopwatch, the II contact of the 415 digital electric stopwatch is connected to the negative poles of all the interlocking components under test, the I contact of the 415 digital electric stopwatch is connected to all the negative contacts of the 10-speed 10-way universal switch, and the positive contacts of the 10-speed 10-way universal switch are connected to the positive contacts of the interlocking contacts under test of the vacuum circuit breaker. Through the conversion of the universal switch button, the interlocking contacts under test are connected to the I and II contacts of the 415 digital electric stopwatch one by one, so as to realize the rapid detection time delay of each interlocking contact under test. All devices are connected by crimping FOT wire rings at both ends of the cable; the line parallel connection is realized by adding parallel pieces to the terminal block.

[0018] The relay printed circuit board assembly includes two HF140FF 012-2ZSWT relays, a 60×80PCB breadboard, and the F401F printed circuit board assembly includes a three-terminal voltage regulator, an IGBT tube, a 1uF capacitor, a 2W-16kΩ resistor, a 3296W potentiometer, etc. The main function is to achieve control loop voltage stabilization and reduce the loop voltage from DC 110V to the DC 12V voltage required by the HF140FF 012-2ZSWT relay.

[0019] All components of this detection device are arranged in a special case of 300×240×130. The 415-type digital electric stopwatch, closing and opening push button switch, 10-speed 10-way 10,000-turn switch, and I and II terminal circuit breaker action switching switch are arranged on the front panel of the special case and fastened to the front panel of the case by the screws and buckles provided by the components. The specific positions are shown in Figure 1 3A air switch, Pin-shaped power socket, and 20-core socket are arranged on the rear panel of the dedicated chassis and fastened to the rear panel of the chassis by screws and buckles provided by the components. For specific locations, see Figure 2 The S-400-110 switching power supply, printed circuit board assembly, and terminal block are arranged on the chassis bottom plate and fixed to the bottom plate by the screws provided with the components. The F401F printed circuit board assembly is installed on the right side plate of the chassis and fixed to the side plate by 4 M4×20 screws. The specific position is shown in Figure 3 ;

[0020] The 220V AC power is converted into 110V DC power through the switching power supply. The 110V DC power is led out in three ways. The first way is introduced into the circuit breaker FKZ1 controller through the plug to supply power to the circuit breaker. The second way is introduced into the closing push button switch, and then introduced into the SWH closing command contact of the F401F printed circuit board assembly through the push button switch. The third way is introduced into the opening push button switch, and then introduced into the SWF opening command contact of the F401F printed circuit board assembly through the push button switch; after the SWH closing command contact is energized, the closing output line number (12V) of the printed circuit board assembly will be energized to activate relay 1, and SWH1 (closing command) will be transmitted to the circuit breaker through the plug. The circuit breaker is activated and the digital stopwatch starts timing at the same time. When the circuit breaker completes the action, the interlock switch also completes the closing action at the same time. The closing signal will be transmitted to the digital stopwatch at the same time, and the digital stopwatch stops timing to complete the measurement process of the interlock switch delay time. The opening process is the same as the closing process. When different interlock switches need to be measured, it can be realized by simply flipping the switch to connect different interlock signals with the electric stopwatch. One gear represents a group of interlock switch signals. The delay time of different interlock switch contacts of the main and auxiliary circuit breakers of the 1+1 circuit breaker can be detected by switching the buttons at the Ⅰ and Ⅱ ends on the operation panel;

[0021] The specific method of use of the present invention is:

[0022] 1. Detection of circuit breaker at end I (phase-controlled main breaker):

[0023] a) The interlocking plug, command plug and main contact clamp are connected (connect the main contact at end Ⅰ), the circuit breaker is turned on, and the switch buttons at ends Ⅰ and Ⅱ on the right side of the tooling panel pop up;

[0024] b) Switch the 10,000-turn switch to gear 1, press the closing button switch, and the electric stopwatch will display the closing delay time of the main contact; press the opening button switch, and the main contact will display the opening delay time;

[0025] c) Switch the 10,000-turn switch to gear 2, press the closing button, and the electric stopwatch will display the closing delay time of the normally open point of the quick-acting switch connected to the interlock plug 5 and 6 pins; press the opening button, and the electric stopwatch will display the disconnection delay time of the normally open point of the quick-acting switch connected to the interlock plug 5 and 6 pins;

[0026] d) Switch the 10,000-turn switch to gear 3, press the closing button, and the electric stopwatch will display the closing delay time of the normally open point of the quick-acting switch connected to the interlock plug 7 and 8 pins; press the opening button, and the electric stopwatch will display the disconnection delay time of the normally open point of the quick-acting switch connected to the interlock plug 7 and 8 pins;

[0027] e) Switch the 10,000-turn switch to gear 4, press the closing button, and the electric stopwatch will display the closing delay time of the normally open point of the quick-acting switch connected to the interlock plug 9 and 10 pins; press the opening button, and the electric stopwatch will display the disconnection delay time of the normally open point of the quick-acting switch connected to the interlock plug 9 and 10 pins;

[0028] f) Switch the 10,000-turn switch to gear 5, press the closing button, and the electric stopwatch will display the closing delay time of the normally open point of the quick-acting switch connected to the interlock plug 11 and 12 pins; press the opening button, and the electric stopwatch will display the disconnection delay time of the normally open point of the quick-acting switch connected to the interlock plug 11 and 12 pins;

[0029] 2. Ⅱ-end circuit breaker detection:

[0030] a) The main contact clamp is connected (connected to the main contact at end II), the circuit breaker is turned on, and the switch button at ends I and II on the right side of the tooling panel is pressed. The detection method is the same as a), b), c), d), e), and f) at end I.

Claims

1. A device for measuring the time delay of circuit breaker interlock switch contacts, characterized in that: It comprises a special case, the special case is connected to a power supply, the power supply output end is divided into two paths, one path is connected to a 415-type digital electric stopwatch, and the other path is connected to an S-400-110 switch power supply input end; the S-400-110 switch power supply output end is respectively connected to a circuit breaker FKZ1 controller, an F401F printed board assembly input end, a closing button switch and an opening button switch, the closing button switch and the opening button switch are respectively connected to the F401F printed board assembly; the F401F printed board assembly output end is divided into two paths, one path is connected to a closing relay, and the other path is connected to an opening relay, the closing relay and the opening relay are respectively connected to a 415-type digital electric stopwatch, the 415-type digital electric stopwatch is connected to a measured interlocking assembly, the 415-type digital electric stopwatch is also connected to a negative contact of a 10-speed 10-way 10,000-turn switch, and a positive contact of the 10-speed 10-way 10,000-turn switch is connected to a positive contact of a vacuum circuit breaker measured interlocking assembly to form a loop, and the above components are all located in the special case; The power supply is an alternating current power supply, and the alternating current power supply is 220V alternating current; The power supply is connected to the controller switch, and the power supply is divided into two paths through the controller switch and respectively connected to the 415 type digital electric stopwatch and the S-400-110 switch power supply input terminal.

2. A device for measuring the time delay of a circuit breaker interlock switch contact according to claim 1, characterized in that: The output end of the S-400-110 switching power supply is divided into four paths, the first path is connected to the circuit breaker FKZ1 controller through a plug and a socket; the second path is connected to the positive and negative poles of the input end of the F401F printed circuit board assembly; the third path is connected to the closing button switch, and the S-400-110 switching power supply is connected to the SWH closing command contact of the F401F printed circuit board assembly through the closing button switch; the fourth path introduces the opening button switch, and the S-400-110 switching power supply is connected to the SWF opening command contact of the F401F printed circuit board assembly through the opening button switch.

3. A device for measuring the time delay of circuit breaker interlock switch contacts according to claim 1, characterized in that: The output end of the F401F printed circuit board assembly is divided into two paths, one path is connected to the closing relay, and the other path is connected to the opening relay; the first group of normally open contacts of the closing relay is the closing command contacts, and the second group of normally open contacts of the closing relay is connected to the I and III contacts of the 415-type digital electric stopwatch. Similarly, the first group of normally open contacts of the opening relay is the opening command contacts, and the second group of normally open contacts of the opening relay is connected to the I and III contacts of the 415-type digital electric stopwatch. The contacts of table II are connected to the negative poles of all interlocking components under test, the contacts of type 415 digital electric stopwatch I are connected to the negative contacts of the interlocking components under test through the 10-speed 10-way universal switch, and the positive contacts of the 10-speed 10-way universal switch are connected to the positive contacts of the interlocking components under test of the circuit breaker. By switching the toggle button of the 10-speed 10-way universal switch, the contacts of the interlocking components under test are connected one by one with the contacts of type 415 digital electric stopwatch I and II, so as to realize the rapid detection of the time delay of each interlocking contact under test.

4. A device for measuring the time delay of circuit breaker interlock switch contacts according to claim 1, characterized in that: The devices are connected by crimping FOT wire rings at both ends of the cable, and the line parallel connection is achieved by adding a terminal block and a parallel piece.

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