Motor Maintenance Skills Training Platform

HYDJ-45Training device for motor maintenance skills

The motor maintenance skills training device is based on the vocational qualification training course "Common Motor Maintenance Workers" compiled by * China Employment Training Technical Guidance Center, and is developed to promote the vocational training and skill appraisal of common motor maintenance workers. The training device includes knowledge and skills in motor maintenance preparation, motor disassembly and assembly, motor maintenance, as well as testing and experimentation. It is suitable for teaching and skill training in related majors offered by vocational colleges, universities, and secondary vocational colleges. At the same time, this training device is also suitable for technical schools, vocational education centers, and vocational qualification appraisal stations (institutes) to conduct skill training, skill appraisal, and assessment.

Characteristics of the device
1. The control screen adopts a training platform structure, with measuring instruments and electrical circuit components fixed on the corresponding functional block panels
2. The classification of practical training projects is clear, covering every step in the motor maintenance process, enabling students to truly master the professional skills of motor maintenance.
3. The training device adopts a modular approach for skill training and deepening of theoretical knowledge
4. This device has a good self-protection system and provides excellent training equipment for achieving an open training room
2、 Technical performance
1. Input voltage: three-phase four wire (or three-phase five wire)~380V ± 10% 50Hz
2. Working environment: The ambient temperature range is -10 to+40 ℃, and the relative temperature is less than 85% (25 ℃)
3. Device capacity: ＜ 1.5KVA
4. Weight: 100kg
3、 Equipment configuration
1. Power control screen
The control screen is made of iron double-layer matte texture spray coating structure and aluminum panel
2. Training table
The training table is made of iron structure, and the desktop is equipped with an anti-static insulating rubber pad to protect the operating table.
3. Main control function board equipment project
(1) The three-phase four wire power input is operated by the contactor through the start and stop buttons through the leakage protector and main switch, and is equipped with an emergency stop control button.
(2) There are three pointer type AC voltmeters on the control panel, which are used to monitor the line voltage between each two phases of the three-phase input power supply.
(3) Timer and alarm recorder (service manager), usually used as a clock, with functions such as setting time, timed alarm, and cutting off power; It can also automatically record the total number of leakage alarms and instrument over range alarms caused by wiring or operation errors, providing a unified evaluation standard for students' skill training assessment.
(4) Three phase adjustable AC power supply, regulated by a 1.5KVA three-phase coaxial autotransformer, outputs 0-450V/5A.
(5) DC power supply section:
A set of 220V/0.5A DC power supply with short-circuit protection function.
A set of adjustable DC high voltage power supply from 0 to 250V, with overvoltage protection and short-circuit protection functions.
4. Instruments and meters
(1) Provide one true effective value AC digital voltmeter with a measurement range of 0-500V, automatic range judgment and switching, accuracy level 0.5, and three and a half digit digital display.
(2) Provide three true effective value AC digital ammeters with a measurement range of 0-5A, automatic range judgment and switching, accuracy level 0.5, three and a half digit digital display, and over range alarm and indication functions.
(3) One DC digital milliampere meter: measuring range 0-2000mA, three and a half digit digital display, accuracy level 0.5, with functions such as over range alarm and indication.
(4) Provide one DC digital voltmeter with a measurement range of 0-300V, divided into three levels: 2V, 20V, and 300V. It can be switched by a direct key switch, displayed in three and a half positions, with an input impedance of 10M Ω and an accuracy of 0.5 level. It has functions such as over range alarm and indication, and can directly measure the DC armature power supply voltage and external voltage.
(5) One intelligent power and power factor meter: composed of a set of microcomputer, high-speed and high-precision A/D conversion chip, and full digital display circuit. The intelligent control mode of human-machine dialogue is achieved through key control and digital display window. In order to improve the measurement range and testing accuracy, the sampled signals of the instantaneous values of the measured voltage and current are subjected to A/D conversion, and the DSP technology of * is used to calculate the active power and reactive power. The accuracy of the power meter is level 0.5, and the voltage and current ranges are 450V and 5A, respectively. It can measure the active power, reactive power, power factor, and properties of the load; It can also store and record 15 sets of test result data for power and power factor, and can be queried group by group.
(6) Adjustable resistors: Two sets of 0-900 Ω/0.5A adjustable resistors.
Single phase capacitor operated motor capacitor: 4uF/450V CBB capacitor.
(7) Low voltage electrical appliances: 3 fuses, 2 AC contactors, 1 thermal relay, etc
5. Instrument configuration
(1) One 500V megohmmeter for testing the insulation resistance of motor windings
(2) 890B+digital multimeter, three and a half digit display
(3) One clamp ammeter
(4) AC voltage withstand tester: The voltage testing range is 0-5KV, the leakage current is 0-100mA, and the transformer capacity is 1000VA.
6. Equipment, motors, and other equipment for production
(1) A set of disassembly and assembly tools: puller, adjustable wrench, hammer head, marking plate, pressure plate, elbow scissors, pointed nose pliers, wire stripping pliers, steel drama, etc.
(2) Tools for fitters: marking needles, compasses, punches, templates, right angle steel rulers, vernier calipers, micrometers, feeler gauges, tiger tables, etc.
(3) One hand cranked electronic counting winding machine: digital display range of 0-9999 turns, convenient counting
(4) Unpainted three-phase squirrel cage asynchronous motor: rated power 180W, voltage 380V (Y-connection), speed 1400r/min.
(5) Unpainted separately excited DC motor: rated power 100W, voltage 220V, speed 2000r/min.
4、 Training Program
（1） Preparation before motor maintenance
1. Check the operation status and make inspection records
2. Fault testing
3. Measurement technology data
4. Tool making
（2） Dismantling and assembly of motors
1. Disassembly of motor
2. Cleaning and marking of the casing
3. Cracking of motor and load
4. Coupling removal
5. Removal of motor end cover
6. Remove the motor rotor
7. Cleaning of stator cavity
8. Inspection, counting, numbering, and labeling of components
（3） Component maintenance
1. Bearing maintenance
① Dismantling of bearings
② Supplement lubricating grease for oil deficient bearings
2. Winding maintenance
① Measure and record the raw data of the motor
② Winding dismantling
③ Motor embedded wire
3. Maintenance of motor commutation device
① Electric brush maintenance
② Inverter maintenance
③ Bearing cleaning and lubricating grease injection
④ Inspection of shaft neck and bearing chamber
④ Motor wiring and testing
⑤ Winding impregnation and drying
（4） Motor assembly and complete machine installation
1. Participate in the assembly of maintenance components
2. Participate in motor axis correction and positioning
3. Clean the stator cavity
4. Participate in the assembly of rotors and end caps
5. On site assembly of the motor for repair
（5） Experiment
1. Motor test
① Motor trial operation
② Measure insulation resistance and DC resistance of windings
2. Electrical testing
① Connecting motor and load transmission mechanism
② Participate in electrical testing and keep records
③ Empty load
④ Motor rotation direction
③ Participate in data processing
④ Participate in drafting the repair report
5、 User provided instruments and equipment
1. AC voltage withstand tester, short-circuit tester, and turn tester
2. Oven and paint dipping tank