How to check electrician certificate online in Dongguan 2016 Shijie, electrician training institution

Heat the rotor to <>~℃ and when all the end rings are melted, pour them out. After that, clean the slot, insert a copper rod slightly longer than the rotor core and similar in shape to the slot into the slot, then bend the part of the copper rod that extends beyond the core and bend it to one side, overlap each other, and weld it together with gas welding to form an end ring. Just turn the end ring flat on the lathe. When the cast aluminum rotor breaks, corresponding treatment measures should be taken according to the different fracture conditions of the rotor.
Contact

Person: Teacher Li
Consultation phone number:
<> <>
School name
: Dongguan Guangyou Vocational Training School
<>

Address: Third Floor, Dongguan Bus Terminal East Station (Guangyou Education)
Guangyou Vocational School is open all year round
School electrician delivery Electrician exam practice software
Guangyou Education
Training goals
: Starting from scratch, guide students in all aspects how to connect indoor and outdoor wires, emergency first aid and treatment of electric shock, electrician field operation and theory combined with safe operation and on-the-job operation and employment experience exercises
Specific electrician training course introduction:
Junior electrician training course introduction:
Safe operation of electricians
.
Basic knowledge of electrical circuits
.
Circuit calculation
.
Series, parallel connection and application of resistors
.
Alternating current, direct current
.
Single-phase alternating current, three-phase alternating current Phase alternating current
.
Transformer, mutual inductor
.
Single-phase ammeter, three-phase ammeter
.
Motor
.
Use of electrical instruments
.
Multimeter
.
Megohmmeter
.
Current clamp meter
.
Ammeter< br/> .
Voltmeter
.
Application of low voltage electrical appliances
.
Fuse
.
Knife switch
.
Circuit breaker
.
Contactor
.
Thermal relay
.
Intermediate relay
.
Time Relay
.
Button
.
Lighting circuit practical operation
.
Industrial power circuit practical operation
.
Motor forward rotation Control
.
Motor interlocking forward and reverse control circuit
.
Double interlocking forward and reverse control circuit
.
Workbench automatic reciprocating control Circuit
.
Motor sequential start control circuit
.
Motor voltage starting control circuit
Intermediate electrician training course training content: electrical control technology, electrician and electronics basics, Maintenance electrician technology, internal and external line electrician
technology,
Electrical equipment operation,
Transformer and motor operation and maintenance programmable controller principles and applications,
Electricity
Advanced training content such as measurement knowledge and practical operations: digital circuit technology, factory power transformation and distribution technology, factory electrical control technology,
programmable controller principles and applications,
microcontroller principles and practical applications Technology,
Rectifier and inverter
Inverter technology, frequency converter principle and application technology, practical operation, etc.
Sliding bearings are integral sliding bearings and sleeves lubricated with (or without) oil lining rings. Cylindrical sliding bearings and decomposed sliding bearings with oil ring lubrication, etc. Integral sliding bearings are generally used in small motors, while decomposed sliding bearings are used in large and medium-sized motors. The journal of the sliding bearing is wrapped in the middle of the bearing for relative sliding, relying on the lubricating oil film in the bearing to form semi-liquid and semi-dry friction. Therefore, in the absence of lubricating oil, it is easy to cause serious wear of the bearing. If it is not stopped for repair in time, the temperature of the bearing will rise, causing the alloy to melt and damage the journal or cause the electric motor to break down.