CN212207607U - Quick wiring control device for temperature rise test of motor winding - Google Patents
Quick wiring control device for temperature rise test of motor winding Download PDFInfo
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- CN212207607U CN212207607U CN202020770036.9U CN202020770036U CN212207607U CN 212207607 U CN212207607 U CN 212207607U CN 202020770036 U CN202020770036 U CN 202020770036U CN 212207607 U CN212207607 U CN 212207607U
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Abstract
The utility model provides a quick wiring control device for motor winding temperature rise test, which comprises a contactor KM, a first indicator lamp L1, a control switch and a power supply loop; the input end of the main circuit of the contactor KM is electrically connected with a motor controller; the output end of the main circuit of the contactor KM is electrically connected with a motor winding; the input end of a control circuit of the contactor KM is connected with a first indicator lamp L1 in series on a power supply loop; the power supply loop is provided with a control switch. By using the device, a series of operations such as switching, discharging, test data recording and the like can be quickly completed by only one person, and the motor can be judged to be in a power-on state or a power-off state according to the on-off indication of the first indicator light L1 connected with the contactor KM in series.
Description
Technical Field
The utility model relates to a motor testing arrangement technical field, in particular to quick wiring controlling means of motor winding temperature rise test.
Background
The temperature rise refers to the temperature of each component in the electronic and electrical equipment above the environment. The temperature rise of the motor winding can not only influence the performance of the motor winding, but also influence the electricity safety. It is therefore necessary for the motor to test its windings for temperature rise in order to check whether the measured data comply with the relevant national standards.
The temperature rise test method of the motor winding comprises a thermocouple method and a resistance method. The resistance method test temperature rise requires that after the motor is in a thermal stable state, the power is quickly cut off, and then a first group of resistance data is measured within 30s (the motor is 50kW below). The motor is required to be stopped, the terminal and the lead are quickly disassembled, then the resistance tester test wire is clamped on the motor terminal, and the safety of the tester can be ensured only by three-phase discharge of the motor terminal. The existing operation method usually needs at least two operators, is easy to have operation errors, and is difficult to complete the first group of thermal resistance tests in a specified time.
Patent CN207395916U, published japanese patent No. 2018.05.22, discloses a fixture for detecting temperature rise of motor winding by resistance method. The fixture can be used for detecting the resistance of each winding in the motor within 3-4s, and can be operated by only one person.
Although the clamp disclosed by the patent can meet the requirement of rapidly carrying out the temperature rise test of the motor winding by a single person, the on-off condition of the switching circuit is controlled by only using the single-pole three-throw switch, so that a user needs to visually identify which position of three positions the switch is located in to distinguish the on-off of the circuit. If the single-pole three-throw switch is not switched in place, misjudgment can exist, and the experiment fails. Therefore, the clamp needs to judge the on-off of the circuit by identifying the switch switching position by a user, the requirement on the user is high, and the risk of experimental error still exists.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems that the existing test fixture mentioned in the background art judges the on-off of the circuit by means of identifying the switch switching position by a user, has higher requirements for the user and still has the risk of experimental errors, the utility model provides a quick wiring control device for the temperature rise test of a motor winding, which comprises a contactor KM, a first indicator lamp L1, a control switch and a power supply loop;
the input end of a main circuit of the contactor KM is electrically connected with a motor controller; the main circuit output end of the contactor KM is used for being electrically connected with a motor winding; the input end of the control circuit of the contactor KM is connected in series with the first indicator light L1 on the power supply circuit; the power supply loop is provided with a control switch.
Further, a second indicator light L2 is also included; the second indicator light L2 is connected in parallel with the contactor KM and the first indicator light L1 after being connected in series;
the control switch is a single-pole double-throw switch K1; the single-pole double-throw switch K1 is connected in series with the power supply loop; the first movable end of the single-pole double-throw switch K1 is connected with the parallel branch where the first indicator light L1 is located; the second moving end of the single-pole double-throw switch K1 is connected with the parallel branch where the second indicator light L2 is located.
Furthermore, the device also comprises a quick wiring distribution box; the surface of the rapid wiring distribution box is provided with a plurality of wiring terminals, the contactor KM is arranged in the rapid wiring distribution box, and a main circuit input end and a main circuit output end of the contactor KM are respectively and electrically connected with the corresponding wiring terminals; the first indicator light L1, the second indicator light L2 and the single-pole double-throw switch K1 are arranged on the surface of the quick-wiring distribution box; the power supply loop is deployed within the quick-connect electrical box that is equipped with the power connection of the power supply loop.
Further, the first indicator light L1 is connected in series with a protection resistor R1; the second indicator light L2 is connected in series with a protective resistor R2.
Further, the input end of a main circuit of the contactor KM connected with a motor controller is a normally closed contact terminal; the output end of the main circuit of the contactor KM connected with the motor winding is a normally closed contact terminal.
Further, a resistance testing device is also provided; the resistance testing device is used for testing the resistance value of the motor winding.
Further, a voltage testing device is also provided; the voltage testing device is used for testing the voltage of the motor winding.
Further, a discharge wire connected with the iron floor is also arranged; when a circuit between the motor controller and the motor winding is in a power-off state and the test voltage of the voltage test device is non-zero, the discharge conducting wire is connected with the motor winding.
Further, the contactor KM is a three-phase ac contactor.
Further, the circuit voltage between the main circuit input end and the main circuit output end of the contactor KM is 380V, and the voltage of the power supply loop is 220V.
The utility model provides a quick wiring controlling means of motor winding temperature rise test has adopted the bright state of going out through first signal lamp to assist the user to differentiate the state that motor winding is in circular telegram or outage, compares in the position that needs the user to differentiate the switch switching and still need detect whether the switch switches the test fixture that targets in place, and it is more convenient to use. In addition, a series of operations such as switching, discharging, test data recording can be completed rapidly only by one person by using the rapid wiring control device for the motor winding temperature rise test.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic diagram of an embodiment of a rapid connection control device for testing temperature rise of a motor winding, in which a contactor KM and a first indicator light L1 are connected in series in a power supply loop;
fig. 2 is a schematic diagram of an embodiment of a motor winding temperature rise test quick connection control device in which a second indicator light L2, a contactor KM and a first indicator light L1 which are connected in series are connected in parallel with a power supply loop;
FIG. 3 is a schematic view of an embodiment of a rapid connection control device for temperature rise test of a motor winding using a rapid connection distribution box as a carrier;
fig. 4 is a schematic diagram of the wiring of the contactor KM in the temperature rise test.
Reference numerals:
1 quick wiring distribution box 2 wiring terminal 3 motor
4 resistance testing device 5 voltage testing device 6 power connection
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Fig. 1 is a schematic view of an embodiment of a motor winding temperature rise test fast wiring control device in which a contactor KM and a first indicator light L1 are connected in series in a power supply loop, and as shown in fig. 1, the motor winding temperature rise test fast wiring control device includes a contactor KM, a first indicator light L1, a control switch and a power supply loop; the input end of the main circuit of the contactor KM is electrically connected with a motor controller; the output end of the main circuit of the contactor KM is electrically connected with a motor winding; the input end of a control circuit of the contactor KM is connected with a first indicator lamp L1 in series on a power supply loop; the power supply loop is provided with a control switch.
Further, the motor winding resistance testing device comprises a resistance testing device 4, and the resistance testing device 4 is used for testing the resistance value of the motor winding.
During specific implementation, the input end of the main circuit of the contactor KM can be electrically connected with a motor controller through a lead, the output end of the main circuit of the contactor KM can be electrically connected with a motor winding through a lead, the motor controller supplies power to the motor winding, and the contactor KM controls the power-on and power-off of a circuit between the motor controller and the motor winding;
the input end of the control circuit of the contactor KM and the first indicator lamp L1 are connected in series on a power supply loop, the power supply loop supplies power to the contactor KM and the first indicator lamp L1, and a switch is arranged on the power supply loop and used for controlling the power-on or power-off of the circuit to the contactor KM and the first indicator lamp L1.
A person skilled in the art can connect the motor controller and the motor winding to the normally open contact of the contactor KM according to the requirements of an actual application scene, when the control switch is closed, the first indicator light L1 is turned on, the coil of the contactor KM is electrified, the normally open contact of the contactor KM is closed, and the circuit between the motor controller and the motor winding is electrified; when the control switch is switched off, the first indicator light L1 is turned off, the coil of the contactor KM is powered off, the normally open contact of the contactor KM is switched off, and the circuit between the motor controller and the motor winding is powered off.
Or, the motor controller and the motor winding are connected to the normally closed contact of the contactor KM, when the control switch is closed, the first indicator lamp L1 is turned on, the coil of the contactor KM is electrified, the normally closed contact of the contactor KM is disconnected, and the circuit between the motor controller and the motor winding is disconnected; when the control switch is switched off, the first indicator light L1 is turned off, the coil of the contactor KM is powered off, the normally closed contact of the contactor KM is closed, and a circuit between the motor controller and the motor winding is powered on.
During temperature rise testing, a laboratory technician switches the control switch to enable the circuit between the motor controller and the motor winding to be in a power-on state, and switches the control switch again when the motor 3 reaches a thermal stable state to enable the circuit between the motor controller and the motor winding to be in a power-off state, so that the motor winding discharges, and the clamp of the resistance testing device 4 is clamped at any two ends of the winding terminal of the motor 3 to start testing the first group of thermal resistance data. In the whole test process, an experimenter judges that the motor winding is in the power-on or power-off state according to the lighting or light-off state of the first signal lamp L1.
Preferably, the input end of a main circuit of the contactor KM connected with the motor controller is a normally closed contact terminal; the output end of the main circuit of the contactor KM connected with the motor winding is a normally closed contact terminal.
Further, as shown in fig. 1, a protection resistor R1 is connected in series to the first indicator light L1.
Further, the quick wiring distribution box comprises a quick wiring distribution box 1; the surface of the rapid wiring distribution box 1 is provided with a plurality of wiring terminals 2, the contactor KM is arranged in the rapid wiring distribution box 1, and the main circuit input end and the main circuit output end of the contactor KM are respectively and electrically connected with the corresponding wiring terminals 2; the first indicator light L1 and the control switch are arranged on the surface of the quick wiring distribution box 1; the power supply circuit is deployed within the fast wiring distribution box 1, the fast wiring distribution box 1 being equipped with a power supply wiring 6 of the power supply circuit.
In implementing the above embodiment, it is preferable that a second indicator light L2 is further included; the second indicator light L2 is connected in parallel with the contactor KM and the first indicator light L1 after being connected in series;
the control switch is a single-pole double-throw switch K1; the single-pole double-throw switch K1 is connected in series with the power supply loop; the first movable end of the single-pole double-throw switch K1 is connected with the parallel branch where the first indicator light L1 is located; the second moving end of the single-pole double-throw switch K1 is connected with the parallel branch where the second indicator light L2 is located.
In specific implementation, as shown in fig. 2, the input end of the control circuit of the contactor KM is connected in series with the first indicator light L1 on the power supply loop; the second indicator light L2 is connected in series on the power supply circuit and forms two parallel branches with the contactor KM and the first indicator light L1; the second indicator light L2 is a parallel branch, and the contactor KM and the first indicator light L1 are connected in parallel by another branch;
a single-pole double-throw switch K1 is connected in series on the power supply loop, a first moving end of a single-pole double-throw switch K1 is connected with a parallel branch where a first indicator light L1 is located, and a second moving end of a single-pole double-throw switch K1 is connected with a parallel branch where a second indicator light L2 is located; when the single-pole double-throw switch K1 is switched to the first movable end, the first indicator light L1 is lightened, and the coil of the contactor KM is electrified; when the single-pole double-throw switch K1 is switched to the second movable end, the second indicator light L2 is lighted, and the coil of the contactor KM is powered off.
A person skilled in the art can connect the motor controller and the motor winding to the normally open contact of the contactor KM according to the requirements of practical application scenarios, when the single-pole double-throw switch K1 is switched to the first moving end, the first indicator light L1 is turned on, the coil of the contactor KM is energized, the normally open contact of the contactor KM is closed, and the circuit between the motor controller and the motor winding is energized; when the single-pole double-throw switch K1 is switched to the second movable end, the second indicator light L2 is turned on, the coil of the contactor KM is powered off, the normally open contact of the contactor KM is disconnected, and the circuit between the motor controller and the motor winding is powered off.
Or, the motor controller and the motor winding are connected to the normally closed contact of the contactor KM, when the single-pole double-throw switch K1 is switched to the first moving end, the first indicator lamp L1 is turned on, the coil of the contactor KM is electrified, the normally closed contact of the contactor KM is disconnected, and the circuit between the motor controller and the motor winding is powered off; when the single-pole double-throw switch K1 is switched to the second movable end, the second indicator light L2 is turned on, the coil of the contactor KM is powered off, the normally closed contact of the contactor KM is closed, and the circuit between the motor controller and the motor winding is powered on.
During temperature rise testing, an experimenter switches the single-pole double-throw switch K1 to enable a circuit between the motor controller and the motor winding to be in a power-on state, and switches the single-pole double-throw switch K1 again to enable the circuit between the motor controller and the motor winding to be in a power-off state when the motor 3 reaches a thermal stability state, the motor winding discharges, and a clamp of the resistance testing device 4 is clamped at any two ends of a winding terminal of the motor 3 to start testing first group of thermal resistance data. In the whole test process, an experimenter judges whether the motor winding is in the power-on or power-off state according to the lighting state of the first signal lamp L1 or the second signal lamp L2.
Further, as shown in fig. 3, the quick wiring distribution box 1 is also included; the surface of the rapid wiring distribution box 1 is provided with a plurality of wiring terminals 2, the contactor KM is arranged in the rapid wiring distribution box 1, and the main circuit input end and the main circuit output end of the contactor KM are respectively and electrically connected with the corresponding wiring terminals 2; the first indicator light L1, the second indicator light L2 and the single-pole double-throw switch K1 are arranged on the surface of the quick-connection distribution box 1; the power supply circuit is deployed within the fast wiring distribution box 1, the fast wiring distribution box 1 being equipped with a power supply wiring 6 of the power supply circuit.
Preferably, the input end of a main circuit of the contactor KM connected with the motor controller is a normally closed contact terminal; the output end of a main circuit of the contactor KM connected with the motor winding is a normally closed contact terminal; the first indicator light L1 is a test-allowed indicator light; the second indicator light L2 is a contactor pull-in indicator light.
Specifically, during temperature rise testing, an experimenter firstly switches the single-pole double-throw switch K1 to the second movable end, the second indicator light L2 is in a light-on state, the first indicator light L1 is in a light-off state, the coil of the contactor KM is powered off, the normally closed contact of the contactor KM is closed, a circuit between a motor controller and a motor winding is in a power-on state, when the motor 3 reaches a thermal stability state, the single-pole double-throw switch K1 is switched to the first movable end, the first indicator light L1 is in a light-on state, the second indicator light L2 is in a light-off state, the coil of the contactor KM is powered on, the normally closed contact of the contactor KM is disconnected, the circuit between the motor controller and the motor winding is in a power-off state, the motor winding discharges, and clamps of the resistance testing device 4 are clamped at any two ends of a winding terminal of the motor 3 to start testing the first group of.
Further, as shown in fig. 2, the first indicator light L1 is connected in series with a protection resistor R1; the second indicator light L2 is connected in series with a protective resistor R2.
In implementing the above embodiment, it is preferable to further provide a voltage test device 5; the voltage testing device 5 is used for testing the voltage of the motor winding.
Further, a discharge wire connected with the iron floor is also arranged; when the circuit between the motor controller and the motor winding is in a power-off state and the test voltage of the voltage test device 5 is non-zero, the discharge wire is connected with the motor winding.
In specific implementation, as shown in fig. 3 and 4, the voltage testing device 5 is connected to the motor winding to monitor the voltage of the motor winding, and when the circuit between the motor controller and the motor winding is in a power-off state and the testing voltage of the voltage testing device 5 is not reduced to zero, the motor winding can be connected by a discharging wire to further discharge.
In carrying out the above embodiment, the voltage testing device 5 is preferably a multimeter. In particular, a person skilled in the art can use an multimeter as voltage testing device 5 for testing the voltage of the motor windings.
In implementing the above embodiment, it is preferable that the contactor KM is a three-phase ac contactor. Specifically, when the motor 3 is a three-phase ac motor, the contactor KM is a three-phase ac contactor.
Further, the circuit voltage between the main circuit input end and the main circuit output end of the contactor KM is 380V, and the voltage of the power supply loop is 220V.
Although terms such as fast wiring switchgears, wiring terminals, motors, resistance testing devices, voltage testing devices, and power wiring are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a quick wiring controlling means of motor winding temperature rise test which characterized in that: the device comprises a contactor KM, a first indicator lamp L1, a control switch and a power supply loop;
the input end of a main circuit of the contactor KM is electrically connected with a motor controller; the main circuit output end of the contactor KM is used for being electrically connected with a motor winding; the input end of the control circuit of the contactor KM is connected in series with the first indicator light L1 on the power supply circuit; the power supply loop is provided with a control switch.
2. The motor winding temperature rise test rapid wiring control device according to claim 1, characterized in that: a second indicator light L2; the second indicator light L2 is connected in parallel with the contactor KM and the first indicator light L1 after being connected in series;
the control switch is a single-pole double-throw switch K1; the single-pole double-throw switch K1 is connected in series with the power supply loop; the first movable end of the single-pole double-throw switch K1 is connected with the parallel branch where the first indicator light L1 is located; the second moving end of the single-pole double-throw switch K1 is connected with the parallel branch where the second indicator light L2 is located.
3. The motor winding temperature rise test rapid wiring control device according to claim 2, characterized in that: the device also comprises a quick wiring distribution box; the surface of the rapid wiring distribution box is provided with a plurality of wiring terminals, the contactor KM is arranged in the rapid wiring distribution box, and a main circuit input end and a main circuit output end of the contactor KM are respectively and electrically connected with the corresponding wiring terminals; the first indicator light L1, the second indicator light L2 and the single-pole double-throw switch K1 are arranged on the surface of the quick-wiring distribution box; the power supply loop is deployed within the quick-connect electrical box that is equipped with the power connection of the power supply loop.
4. The motor winding temperature rise test rapid wiring control device according to claim 2, characterized in that: the first indicator light L1 is connected in series with a protective resistor R1; the second indicator light L2 is connected in series with a protective resistor R2.
5. The motor winding temperature rise test rapid wiring control device according to claim 1 or 2, characterized in that: the input end of a main circuit of the contactor KM connected with a motor controller is a normally closed contact terminal; the output end of the main circuit of the contactor KM connected with the motor winding is a normally closed contact terminal.
6. The motor winding temperature rise test rapid wiring control device according to claim 1 or 2, characterized in that: the device is also provided with a resistance testing device; the resistance testing device is used for testing the resistance value of the motor winding.
7. The motor winding temperature rise test rapid wiring control device according to claim 1 or 2, characterized in that: the device is also provided with a voltage testing device; the voltage testing device is used for testing the voltage of the motor winding.
8. The motor winding temperature rise test rapid wiring control device of claim 7, characterized in that: the discharge wire is also provided for connecting the iron floor; when a circuit between the motor controller and the motor winding is in a power-off state and the test voltage of the voltage test device is non-zero, the discharge conducting wire is connected with the motor winding.
9. The motor winding temperature rise test rapid wiring control device according to claim 1, characterized in that: the contactor KM is a three-phase alternating current contactor.
10. The motor winding temperature rise test rapid wiring control device of claim 9, characterized in that: the circuit voltage between the main circuit input end and the main circuit output end of the contactor KM is 380V, and the voltage of the power supply loop is 220V.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020770036.9U CN212207607U (en) | 2020-05-11 | 2020-05-11 | Quick wiring control device for temperature rise test of motor winding |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020770036.9U CN212207607U (en) | 2020-05-11 | 2020-05-11 | Quick wiring control device for temperature rise test of motor winding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267271A (en) * | 2021-05-07 | 2021-08-17 | 广东白云学院 | Thermal state winding temperature rise test system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267271A (en) * | 2021-05-07 | 2021-08-17 | 广东白云学院 | Thermal state winding temperature rise test system and method |
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