CN210603843U - High-voltage circuit breaker mechanical life test circuit, device and system - Google Patents
High-voltage circuit breaker mechanical life test circuit, device and system Download PDFInfo
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- CN210603843U CN210603843U CN201921357878.5U CN201921357878U CN210603843U CN 210603843 U CN210603843 U CN 210603843U CN 201921357878 U CN201921357878 U CN 201921357878U CN 210603843 U CN210603843 U CN 210603843U
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Abstract
The utility model discloses a high voltage circuit breaker mechanical life test circuit, device and system, the circuit includes main control unit, mode change over switch, automatic deciliter the control unit, manual deciliter the control unit, execution unit, signal indication unit and power supply unit; the main control unit, the mode change-over switch, the automatic on-off control unit, the manual on-off control unit, the execution unit, the signal indication unit and the execution unit are all connected with the power supply unit; the main control unit, the automatic on-off control unit, the execution unit, the signal indication unit and the mechanism box electric wire form an automatic test circuit; the manual on-off control unit, the execution unit, the signal indication unit and the mechanism box electric wire form a manual test circuit; the mode conversion switch is selectively communicated with the automatic test circuit or the manual test circuit; the circuit can test the mechanical life of the high-voltage circuit breaker in an automatic mode and a manual mode.
Description
Technical Field
The utility model relates to a high voltage circuit breaker's test technical field, specific theory relates to a high voltage circuit breaker mechanical life test circuit, device and system.
Background
And the circuit breaker is used for switching on or switching off the circuit during normal operation, and when a system has a fault, the circuit is rapidly switched off under the action of the relay protection device. The high-voltage circuit breaker is a special electric appliance which plays a control role in a high-voltage circuit and is used for switching on or off the high-voltage circuit under normal or fault conditions, and is one of important electric appliance elements in the high-voltage circuit.
In order to ensure the quality of the high-voltage circuit breaker, a certain number of running-in or tens of thousands of life test tests are required after the high-voltage circuit breaker is assembled. With the development of science and technology, the mode of performing life test tests is gradually transited from the initial pure manual operation to the semi-automatic operation mode, but in the operation process, a button and the like still need to be operated manually, and the mode is time-consuming, labor-consuming and high in cost.
Based on the above problems, chinese patent publication No. CN206920560U discloses an "integrated high-voltage circuit breaker mechanical and life test system", which provides an accurate and efficient way for the inspection of newly produced high-voltage circuit breakers on the spot and the maintenance of operating high-voltage circuit breakers, obviously improves the automation level of the inspection in the high-voltage circuit breaker factory, shortens the test time, and saves the labor cost. However, in the scheme, only the technical scheme of the automatic test of the mechanical life of the high-voltage circuit breaker is provided, and a manual test scheme is not provided at the same time, so that when the automatic test circuit fails, the manual test scheme cannot be adopted for replacement. In addition, in the patent and the prior art, a detailed circuit for implementing a mechanical life test of the high-voltage circuit breaker is not disclosed.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem, the utility model discloses a first aim at: the circuit can test the mechanical life of the high-voltage circuit breaker in an automatic mode and a manual mode.
The utility model discloses a second aim at: the mechanical life testing device for the high-voltage circuit breaker comprises the mechanical life testing circuit for the high-voltage circuit breaker.
The third purpose of the utility model is that: the mechanical life test system of the high-voltage circuit breaker comprises the mechanical life test circuit of the high-voltage circuit breaker.
Based on the above object, one aspect of the present invention provides a mechanical life testing circuit for a high voltage circuit breaker, which includes a main control unit, a mode switch, an automatic switching control unit, a manual switching control unit, an execution unit, a signal indication unit and a power supply unit; the main control unit, the mode change-over switch, the automatic on-off control unit, the manual on-off control unit, the execution unit, the signal indication unit and the execution unit are all connected with the power supply unit; wherein the content of the first and second substances,
the main control unit is respectively connected with the execution unit, the signal indication unit and the mode change-over switch, the mode change-over switch is respectively connected with the control end of the automatic on-off control unit and the control end of the manual on-off control unit, the execution ends of the automatic on-off control unit and the manual on-off control unit are connected with the control end of the execution unit, and the execution end of the execution unit is connected with the mechanism box electric wire of the high-voltage circuit breaker;
the main control unit, the automatic on-off control unit, the execution unit, the signal indication unit and the mechanism box electric wire form an automatic test circuit; the manual on-off control unit, the execution unit, the signal indication unit and the mechanism box electric wire form a manual test circuit; the mode conversion switch is selectively communicated with the automatic test circuit or the manual test circuit;
when automatic testing is carried out, the mode conversion switch is communicated with the main control unit and the automatic switching-on and switching-off control unit, so that an automatic testing loop is conducted, the execution unit alternately executes switching-on and switching-off actions according to a current signal of the automatic switching-on and switching-off control unit, and the signal indication unit indicates the current state of the high-voltage circuit breaker;
when a manual test is carried out, the mode conversion switch is communicated with the main control unit and the manual opening and closing control unit, so that a manual test loop is conducted, the execution unit alternately executes closing and opening actions according to a current signal of the manual opening and closing control unit, and the signal indication unit indicates the current state of the high-voltage circuit breaker.
Preferably, the automatic switching control unit includes a first time relay, a second time relay, a third time relay, a fourth time relay, a first intermediate relay, a second intermediate relay, and a third intermediate relay, wherein:
the first time relay is connected with the third time relay in parallel, and meanwhile, the first time relay is connected with the switching-on execution end of the execution unit through the first intermediate relay to form an automatic switching-off control circuit for controlling and executing switching-on action; if the execution unit does not execute the closing action after the first time relay finishes the preset time period of the contact action, the third time relay acts on the contact to cut off a power supply line of the execution unit;
the second time relay is connected with the fourth time relay in parallel, and meanwhile, the second time relay is connected with the opening execution end of the execution unit through a second intermediate relay to form an automatic opening control circuit for controlling and executing opening actions; if the execution unit does not execute the opening action after the second time relay finishes the contact action for the preset time period, the fourth time relay contacts to act, and the power supply circuit of the execution unit is cut off;
and the third intermediate relay is connected with the energy storage end of the execution unit, and when the execution unit finishes an energy storage action, the third intermediate relay cuts off a power supply circuit of the energy storage end of the execution unit.
Preferably, the manual switching and closing control unit comprises a switching-on button, a switching-off button, a fourth intermediate relay and a fifth intermediate relay, wherein:
the switching-on button is connected with a switching-on execution end of the execution unit through a fourth intermediate relay to form a manual switching-off control circuit for controlling and executing switching-on action;
the opening button is connected with an opening execution end of the execution unit through a fifth intermediate relay to form a manual opening control circuit for controlling and executing opening action.
Preferably, the execution unit comprises an energy storage circuit connected with the energy storage end, a closing circuit connected with the closing execution end and a separating circuit connected with the separating execution end; the energy storage circuit, the closing circuit and the opening circuit are connected in parallel;
the energy storage circuit comprises a travel switch, an energy storage indicator lamp and a motor which are connected in sequence;
the switching-on circuit comprises a switching-on coil, and the switching-off circuit comprises a switching-off coil.
Preferably, the automatic on-off control unit further comprises a fault detection unit and an alarm unit, and the fault detection unit and the alarm unit are both connected with the main control unit; the main control unit detects the interval time between the switching-on action and the switching-off action through the fault detection unit, and if the interval time exceeds a preset value, the main control unit judges that the switching-on or the switching-off fault occurs;
the fault detection unit comprises a fifth time relay which is respectively connected with the automatic switching-on control circuit of the automatic switching-off control circuit in parallel; the alarm unit comprises a buzzer.
Preferably, the mechanical life test circuit of the high-voltage circuit breaker further comprises a counting unit, wherein the counting unit is connected with the main control unit and comprises an electromagnetic counter.
Preferably, the power supply unit comprises an alternating current-direct current conversion switch, an adjustable direct current power supply and a voltage regulator, a first wiring terminal of the alternating current-direct current conversion switch is connected with a live wire of commercial power, a second wiring terminal is connected with the adjustable direct current power supply, a third wiring terminal is connected with the voltage regulator, and the adjustable direct current power supply and the voltage regulator are both connected with a zero line of the commercial power.
Preferably, the mode switch comprises an electromagnetic relay.
The utility model discloses a high voltage circuit breaker mechanical life testing arrangement is provided in another aspect, the device includes as above high voltage circuit breaker mechanical life test circuit.
The utility model discloses a further aspect provides a high voltage circuit breaker mechanical life test system, and this system includes as above high voltage circuit breaker mechanical life test circuit.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses the mechanical life of accessible is automatic and manual two kinds of modes to high voltage circuit breaker tests.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a mechanical life test circuit of a high voltage circuit breaker according to an embodiment of the present invention;
fig. 2 is a schematic circuit structure diagram of a power supply unit in one embodiment of the present invention;
fig. 3 is a schematic diagram of a partial circuit structure of an automatic test loop according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a circuit structure of a part of a manual test loop according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of an execution unit according to one embodiment of the present invention.
The independent numbers in fig. 2 to 5 are pin numbers, and are intended to illustrate the connection relationship between the components.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The present embodiment provides a mechanical life test circuit for a high-voltage circuit breaker, as shown in fig. 1, the circuit includes a main control unit 100, a mode switch 200, an automatic switching control unit 300, a manual switching control unit 400, an execution unit 500, a signal indication unit, and a power supply unit 700; the main control unit 100, the mode change-over switch 200, the automatic switching-on/off control unit 300, the manual switching-on/off control unit 400, the execution unit 500, the signal indication unit and the execution unit 500 are all connected with the power supply unit 700; wherein the content of the first and second substances,
the main control unit 100 is respectively connected with the execution unit 500, the signal indication unit and the mode change-over switch 200, the mode change-over switch 200 is respectively connected with the control end of the automatic switching-on/off control unit 300 and the control end of the manual switching-on/off control unit 400, the execution ends of the automatic switching-on/off control unit 300 and the manual switching-on/off control unit 400 are connected with the control end of the execution unit 500, and the execution end of the execution unit 500 is connected with the mechanism box electrical wire 600 of the high-voltage circuit breaker;
the main control unit 100, the automatic on-off control unit 300, the execution unit 500, the signal indication unit and the mechanism box electric wire 600 form an automatic test circuit; the manual on-off control unit 400, the execution unit 500, the signal indication unit and the mechanism box electric wire 600 form a manual test circuit; the mode switch 200 is selectively connected to the automatic test circuit or the manual test circuit;
when automatic testing is performed, the mode conversion switch 200 is communicated with the main control unit 100 and the automatic switching-on/off control unit 300, so that an automatic testing loop is conducted, the execution unit 500 alternately executes switching-on and switching-off actions according to a current signal of the automatic switching-on/off control unit 300, and the signal indication unit indicates the current state of the high-voltage circuit breaker;
when a manual test is performed, the mode conversion switch 200 is communicated with the main control unit 100 and the manual switching-on/off control unit 400, so that a manual test loop is conducted, the execution unit 500 alternately performs switching-on and switching-off actions according to a current signal of the manual switching-on/off control unit 400, and the signal indication unit indicates the current state of the high-voltage circuit breaker.
In a preferred embodiment, the automatic switching control unit 300 includes a first time relay, a second time relay, a third time relay, a fourth time relay, a first intermediate relay, a second intermediate relay, and a third intermediate relay, wherein:
the first time relay is connected with the third time relay in parallel, and meanwhile, the first time relay is connected with the switching-on execution end of the execution unit 500 through a first intermediate relay to form an automatic switching-off control circuit for controlling and executing switching-on actions; if the execution unit 500 does not execute the switching-on action after the first time relay finishes the preset time period of the contact action, the third time relay contacts to act, and the power supply circuit of the execution unit 500 is cut off;
the second time relay is connected with the fourth time relay in parallel, and meanwhile, the second time relay is connected with the opening execution end of the execution unit 500 through a second intermediate relay to form an automatic opening control circuit for controlling and executing opening actions; if the execution unit 500 does not execute the opening action after the second time relay completes the contact action for the preset time period, the fourth time relay contacts to act, and the power supply circuit of the execution unit 500 is cut off;
the third intermediate relay is connected to the energy storage end of the execution unit 500, and when the execution unit 500 completes the energy storage operation, the third intermediate relay cuts off the power supply line of the energy storage end of the execution unit 500.
In a preferred embodiment, the manual switching control unit 400 includes a switching-on button, a switching-off button, a fourth intermediate relay and a fifth intermediate relay, wherein:
the closing button is connected with the closing execution end of the execution unit 500 through a fourth intermediate relay to form a manual opening control circuit for controlling and executing closing action;
the opening button is connected with the opening executing end of the executing unit 500 through a fifth intermediate relay, so as to form a manual opening control circuit for controlling and executing opening action.
In a preferred embodiment, the execution unit 500 includes an energy storage circuit connected to the energy storage terminal, a switch-on circuit connected to the switch-on execution terminal, and a switch-off circuit connected to the switch-off execution terminal; the energy storage circuit, the closing circuit and the opening circuit are connected in parallel;
the energy storage circuit comprises a travel switch, an energy storage indicator lamp and a motor which are connected in sequence;
the switching-on circuit comprises a switching-on coil, and the switching-off circuit comprises a switching-off coil.
In a preferred embodiment, the automatic switching control unit 300 further includes a fault detection unit and an alarm unit, and both the fault detection unit and the alarm unit are connected to the main control unit 100; the main control unit 100 detects the interval time between the switching-on action and the switching-off action through the fault detection unit, and if the interval time exceeds a preset value, the main control unit judges that the switching-on or the switching-off fault occurs;
the fault detection unit comprises a fifth time relay which is respectively connected with the automatic switching-on control circuit of the automatic switching-off control circuit in parallel; the alarm unit comprises a buzzer.
In a preferred embodiment, the mechanical life test circuit of the high-voltage circuit breaker further includes a counting unit, and the counting unit is connected with the main control unit 100 and includes an electromagnetic counter.
In a preferred embodiment, the power supply unit 700 includes an ac/dc converter switch, an adjustable dc power supply and a voltage regulator, a first connection terminal of the ac/dc converter switch is connected to the live wire of the commercial power, a second connection terminal is connected to the adjustable dc power supply, a third connection terminal is connected to the voltage regulator, and the adjustable dc power supply and the voltage regulator are both connected to the zero wire of the commercial power.
In a preferred embodiment, the mode switcher 200 includes an electromagnetic relay.
Of course, this embodiment can also provide a high voltage circuit breaker mechanical life testing device, the device includes as above high voltage circuit breaker mechanical life testing circuit, preferably, still includes the casing, establishes operating panel on the casing, and operating panel is last to be equipped with switch, power panel, direct current-alternating current change over switch, manual automatic change over switch, interval time adjustment button, operating button, pilot lamp, count etc. and shows.
Further, the embodiment may also provide a system for testing the mechanical life of a high-voltage circuit breaker, where the system includes the circuit for testing the mechanical life of a high-voltage circuit breaker or the device for testing the mechanical life of a high-voltage circuit breaker as described above.
An embodiment of this embodiment is described in detail below with reference to the accompanying drawings:
as shown in fig. 2, the power supply unit includes an adjustable dc power supply DDY (preferably model: WYK25020D), a voltage regulator ADY (preferably model: TDGC2-1000VA), and an ac/dc converter SA1 (preferably model:
LW39-16B-40B-202/2P), preferably, the adjustable range of the adjustable dc power supply is 0-220VDC, the adjustable range of the voltage regulator is 0-220VAC, and the change-over switch SA1 can switch between dc and ac states.
The automatic on-off control unit comprises a first time relay KT1, a second time relay KT2, a third time relay KT3 and a fourth time relay KT4 (the model of each time relay is JS14P AC220V), a first intermediate relay KA1, a second intermediate relay KA2 and a third intermediate relay KA3 (the model of each time relay is DY4N AC 220V); the automatic on-off control unit is connected with the power supply unit through an automatic manual change-over switch SA 2.
The execution unit comprises a brake separating coil TQ (the preferred model is push-pull electromagnet ZN63A), a brake closing coil HQ (the preferred model is push-pull electromagnet ZN63A) and a motor M (the preferred model is permanent magnet direct current speed reducing motor ZYJ-53-203);
the signal indicating unit comprises a closing indicating lamp HD (the preferred model is AD16-22D AC220V), a separating indicating lamp TD (the preferred model is AD16-22D AC220V) and an energy storage indicating lamp CD (the preferred model is AD16-22D AC 220V);
the fault detection unit comprises a fifth time relay KT5 (preferably model: JS14P AC 220V);
the alarm unit comprises a buzzer HZ (preferably, the model is AD16-22SM AC 220V);
the counting unit comprises an electromagnetic counter KC (preferably, the model is CSK6-NKW AC 220V);
as shown in fig. 3 and 5, the automatic test circuit includes a first time relay KT1, a second time relay KT2, a third time relay KT3, a fourth time relay KT4, a fifth time relay KT5, a first intermediate relay KA1, a second intermediate relay KA2, a third intermediate relay KA3, an electromagnetic counter KC, a buzzer HZ, a closing indicator lamp HD, a separating indicator lamp TD, an energy storage indicator lamp CD, and an automatic-manual change-over switch SA 2;
the working principle of the automatic test loop is as follows: firstly, setting the state of an alternating current-direct current change-over switch SA1 and parameters of a power supply according to the model of a circuit breaker, then setting an automatic manual change-over switch SA2 to an automatic position, setting KT1 and KT2 for 15s of time for cyclic operation of 15s interval switching-on and switching-off operation, setting KT3 and KT4 for 16s of time for forcibly cutting off the power supply of a switching-on and switching-off coil after 1s to prevent the coil from being burnt out when the switching-on and switching-off fault occurs, and setting KT5 for 60s of time for alarming after the switching-on and switching-off. If the circuit breaker is in the time sequence of working when the open brake does not store energy:
after electrification, a switching-off indicator light TD is on, KT1 and KT3 start timing, a KA3 contact acts, a motor M starts energy storage until energy storage is in place, a travel switch S1 acts, the motor M stops rotating, and an energy storage indicator light CD is on;
after electrifying for 15s, KT1 is timed in place, KT1 contacts act, KA1 contacts are driven to act, and a closing coil HQ acts. If the switching-on is refused, KT3 is timed in place after 1s, KT3 contacts act, the switching-on coil HQ is de-energized, KT1 and KT3 are re-timed, switching-on operation is tried again, and if the switching-on is still refused after multiple cycles within 60s, the buzzer HZ gives an alarm; if the switch-on is successful, the auxiliary contact S1.1 acts, the switch-off indicator lamp TD goes out, the switch-on indicator lamp HD lights, the switch-on coil HQ loses power, the counter KC counts once, the KT2 and the KT4 start timing, meanwhile, the travel switch S1 acts, the energy storage indicator lamp CD goes out, the motor M starts to rotate until the energy storage arrives at the position, the S1 acts again, the motor M stops rotating, and the energy storage indicator lamp CD lights.
After the switch-on is successful for 15s, the KT2 is timed in place, the KT2 contact acts, the KA2 contact is driven to act, and the switching-off coil TQ acts. If the brake is refused to move, KT4 is timed in place after 1s, KT4 contacts act, the brake-separating coil TQ is de-energized, KT2 and KT4 are re-timed, brake-separating operation is tried again, and if the brake still refuses to move after multiple cycles within 60s, the buzzer HZ gives an alarm; if the switching-off is successful, the auxiliary contact S1.1 acts, the switching-on indicator lamp HD is turned off, the switching-off indicator lamp TD is turned on, the switching-off coil TQ is powered off, and the KT1 and the KT3 start timing to complete one cycle.
The electrical components on the switch include an auxiliary contact S1.1, a travel switch S1 and the like.
As shown in figures 4 and 5, the difference of the automatic on-off control circuit is that the manual on-off control unit comprises a closing button HA (preferably model: LAB39-11AC220V), an opening button TA (preferably model: LAB39-11AC220V), a fourth intermediate relay KA4 and a fifth intermediate relay KA 5. The manual on-off control unit is connected with the power supply unit through an automatic manual change-over switch SA 2.
The working principle of the manual test loop is as follows: the state of the ac/dc conversion switch SA1 and the parameters of the power source are first set according to the model of the circuit breaker, and then the automatic-manual conversion switch SA2 is set to a manual position. If the circuit breaker is in the time sequence of working when the open brake does not store energy:
after power is on, the opening indicator light TD is on, the motor M starts to store energy until the stored energy is in place, the travel switch S1 acts, the motor M stops rotating, and the energy storage indicator light CD is on;
and pressing the switch-on button HA, KA4 contacts to act, completing the self-locking of the button, and switching on the coil HQ to act. If the switch-on is refused, the power supply is turned off to search the reason; if the switch-on is successful, the auxiliary contact S1.1 acts, the switch-on coil HQ loses power, the switch-on indicator lamp HD is on, the switch-off indicator lamp TD is off, meanwhile, the travel switch S1 acts, the energy storage indicator lamp CD is off, the motor M starts to store energy until the energy storage is in place, the travel switch S1 acts, the motor M stops rotating, and the energy storage indicator lamp CD is on.
After the successful closing, the opening button TA is pressed, the KA5 contact is pressed to act, the self-locking of the button is completed, and the opening coil TQ acts. If the brake is not actuated, the power supply is turned off to search the reason; if the brake is successfully opened, the auxiliary contact S1.1 acts, the brake opening coil TQ loses power, the brake opening indicator lamp is on, and the brake closing indicator lamp is off.
In conclusion, the utility model can test the mechanical life of the high-voltage circuit breaker in automatic and manual modes, realize the counting function and has higher practicability; in addition, in the process of automatic testing, fault detection and alarm lamp operation can be carried out on the test circuit, so that damage of circuit faults to components in the circuit is effectively avoided.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A mechanical life test circuit of a high-voltage circuit breaker is characterized by comprising a main control unit, a mode change switch, an automatic switching control unit, a manual switching control unit, an execution unit, a signal indication unit and a power supply unit; the main control unit, the mode change-over switch, the automatic on-off control unit, the manual on-off control unit, the execution unit, the signal indication unit and the execution unit are all connected with the power supply unit; wherein the content of the first and second substances,
the main control unit is respectively connected with the execution unit, the signal indication unit and the mode change-over switch, the mode change-over switch is respectively connected with the control end of the automatic on-off control unit and the control end of the manual on-off control unit, the execution ends of the automatic on-off control unit and the manual on-off control unit are connected with the control end of the execution unit, and the execution end of the execution unit is connected with the mechanism box electric wire of the high-voltage circuit breaker;
the main control unit, the automatic on-off control unit, the execution unit, the signal indication unit and the mechanism box electric wire form an automatic test circuit; the manual on-off control unit, the execution unit, the signal indication unit and the mechanism box electric wire form a manual test circuit; the mode conversion switch is selectively communicated with the automatic test circuit or the manual test circuit;
when automatic testing is carried out, the mode conversion switch is communicated with the main control unit and the automatic switching-on and switching-off control unit, so that an automatic testing loop is conducted, the execution unit alternately executes switching-on and switching-off actions according to a current signal of the automatic switching-on and switching-off control unit, and the signal indication unit indicates the current state of the high-voltage circuit breaker;
when a manual test is carried out, the mode conversion switch is communicated with the main control unit and the manual opening and closing control unit, so that a manual test loop is conducted, the execution unit alternately executes closing and opening actions according to a current signal of the manual opening and closing control unit, and the signal indication unit indicates the current state of the high-voltage circuit breaker.
2. The mechanical life test circuit of a high-voltage circuit breaker according to claim 1, wherein the automatic switching control unit comprises a first time relay, a second time relay, a third time relay, a fourth time relay, a first intermediate relay, a second intermediate relay and a third intermediate relay, wherein:
the first time relay is connected with the third time relay in parallel, and meanwhile, the first time relay is connected with the switching-on execution end of the execution unit through the first intermediate relay to form an automatic switching-off control circuit for controlling and executing switching-on action; if the execution unit does not execute the closing action after the first time relay finishes the preset time period of the contact action, the third time relay acts on the contact to cut off a power supply line of the execution unit;
the second time relay is connected with the fourth time relay in parallel, and meanwhile, the second time relay is connected with the opening execution end of the execution unit through a second intermediate relay to form an automatic opening control circuit for controlling and executing opening actions; if the execution unit does not execute the opening action after the second time relay finishes the contact action for the preset time period, the fourth time relay contacts to act, and the power supply circuit of the execution unit is cut off;
and the third intermediate relay is connected with the energy storage end of the execution unit, and when the execution unit finishes an energy storage action, the third intermediate relay cuts off a power supply circuit of the energy storage end of the execution unit.
3. The mechanical life testing circuit of the high-voltage circuit breaker according to claim 2, wherein the manual switching control unit comprises a switching-on button, a switching-off button, a fourth intermediate relay and a fifth intermediate relay, wherein:
the switching-on button is connected with a switching-on execution end of the execution unit through a fourth intermediate relay to form a manual switching-off control circuit for controlling and executing switching-on action;
the opening button is connected with an opening execution end of the execution unit through a fifth intermediate relay to form a manual opening control circuit for controlling and executing opening action.
4. The mechanical life test circuit of the high-voltage circuit breaker according to claim 3, wherein the execution unit comprises an energy storage circuit connected with the energy storage end, a closing circuit connected with the closing execution end, and an opening circuit connected with the opening execution end; the energy storage circuit, the closing circuit and the opening circuit are connected in parallel;
the energy storage circuit comprises a travel switch, an energy storage indicator lamp and a motor which are connected in sequence;
the switching-on circuit comprises a switching-on coil, and the switching-off circuit comprises a switching-off coil.
5. The mechanical life test circuit of the high-voltage circuit breaker according to claim 2, wherein the automatic switching control unit further comprises a fault detection unit and an alarm unit, and the fault detection unit and the alarm unit are both connected with the main control unit; the main control unit detects the interval time between the switching-on action and the switching-off action through the fault detection unit, and if the interval time exceeds a preset value, the main control unit judges that the switching-on or the switching-off fault occurs;
the fault detection unit comprises a fifth time relay which is respectively connected with the automatic switching-on control circuit of the automatic switching-off control circuit in parallel; the alarm unit comprises a buzzer.
6. The circuit for testing the mechanical life of the high-voltage circuit breaker according to claim 1, further comprising a counting unit, wherein the counting unit is connected with the main control unit and comprises an electromagnetic counter.
7. The mechanical life test circuit of a high-voltage circuit breaker according to claim 1, wherein the power supply unit comprises an ac/dc converter switch, an adjustable dc power supply and a voltage regulator, a first connection terminal of the ac/dc converter switch is connected to a live wire of a commercial power, a second connection terminal is connected to the adjustable dc power supply, a third connection terminal is connected to the voltage regulator, and the adjustable dc power supply and the voltage regulator are both connected to a zero line of the commercial power.
8. The mechanical life test circuit for high-voltage circuit breaker according to claim 1, wherein said mode-switching switch comprises an electromagnetic relay.
9. A mechanical life test device for a high voltage circuit breaker, characterized in that it comprises a mechanical life test circuit for a high voltage circuit breaker according to any one of claims 1 to 8.
10. A high voltage circuit breaker mechanical life test system, characterized in that it comprises a high voltage circuit breaker mechanical life test circuit according to any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921357878.5U CN210603843U (en) | 2019-08-21 | 2019-08-21 | High-voltage circuit breaker mechanical life test circuit, device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921357878.5U CN210603843U (en) | 2019-08-21 | 2019-08-21 | High-voltage circuit breaker mechanical life test circuit, device and system |
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| CN115078989A (en) * | 2022-07-20 | 2022-09-20 | 山东省产品质量检验研究院 | Circuit breaker service life test control method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115078989A (en) * | 2022-07-20 | 2022-09-20 | 山东省产品质量检验研究院 | Circuit breaker service life test control method and system |
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Address after: 231121 Small and Micro Enterprise Venture Base No. 2 Weisi Road, Xiatang Town, Changfeng County, Hefei, Anhui Province Patentee after: Shuangjie Electric Hefei Co.,Ltd. Address before: 231121 Small and Micro Enterprise Venture Base No. 2 Weisi Road, Xiatang Town, Changfeng County, Hefei, Anhui Province Patentee before: JieChuang Electric Co.,Ltd. |