"Low Voltage Electrician Practical Tr*ning Device" is a device developed based on the test circuit listed in the assessment content of Subject 2 of the "Low Voltage Electrician Work Safety Technical Tr*ning Outline and Assessment Standards". Through the operation of this device, students can quickly master the practical application technology and operation skills of the assessment content. This device can not only be used for students to conduct skill tr*ning, but also is an ideal device for low voltage electrician certification assessment tr*ning in technical secondary schools, technical schools, vocational schools and labor vocational skills appr*sal departments.
2. Functional characteristics
1. The electrical control circuit components are installed on the electrical installation board, which is easy to operate and replace.
2. The operation panel only needs a three-phase four-wire AC power supply to be put into use;
3. The control circuit and specially designed small motor used for skill tr*ning can meet the requirements of practical skill tr*ning for low-voltage electricians;
4. All components of the relay contact control circuit tr*ning are connected to the plug-in terminals through wires. Students only need to connect the wires on the terminals when wiring, which is conducive to protecting the components;
5. It is equipped with a voltage-type leakage protector and a current-type leakage protector to ensure the safety of the operator; each power output has monitoring and short-circuit protection functions. When an incorrect operation occurs during tr*ning or a short circuit is caused by a wiring error, the device can automatically protect to avoid burning the fuse and damaging the electrical appliances, ensuring the smooth progress of the tr*ning;
6. The device is equipped with a three-phase power output short-circuit protection function to prevent short-circuit damage to components due to wiring errors or misoperation during tr*nee tr*ning. At the same time, it can ensure the smooth progress of tr*ning and save tr*ning costs.
7. Different from the simulation device tr*ning equipment on the market, this equipment uses real components.
8. M*ntenance of electrical and electronic machinery and professional qualification tr*ning and assessment simulation software
This software is in apk format and can be used on PC or mobile. This software can set faults manually or automatically. This software can select the manual setting of fault points through the green box in the circuit diagram (up to 39 fault points can be set), or the system can automatically set one fault point at random, two fault points at random, three fault points at random, four fault points at random, and five fault points at random. This software has toolbox, component library, magnifying glass, circuit diagram and other functions. You can select a multimeter for detection through the toolbox, select appropriate components through the component library, and use a magnifying glass to clearly understand each component and circuit. This software sets the fault of the motor star-delta starting control circuit and, after various investigations, allows students to understand the working principle and circuit structure of the motor star-delta starting control circuit.
3. Technical performance:
1. Input voltage: three-phase four-wire 380V±10%, power frequency 50Hz;
2. Working environment: ambient temperature range -5~+40℃, relative humidity <85% (25℃), altitude <4000m;
3. Device capacity: <1.5KVA;
4. Device configuration
1. The operation screen is a sheet metal dense pattern spray frame.
2. Three-phase four-wire power input, after the leakage protector and the m*n switch, the contactor is controlled by the start and stop buttons, and an emergency stop control button is provided;
3. There are 1 voltmeter and 1 ammeter on the console.
5. Configuration
Serial number |
serial number |
Tr*ning module name |
quantity |
Remark |
1 |
K21 |
Motor one-way continuous operation wiring (with inching control) |
1 item |
1 3p circuit breaker, 5 fuses, 1 AC contactor, 1 thermal relay, 1 red, yellow, and green button |
2 |
K22 |
Wiring and safe operation of three-phase motor forward and reverse operation |
1 item |
1 3p circuit breaker, 5 fuses, 1 thermal relay, 2 AC contactors, 1 red, yellow, and green button each |
3 |
K23 |
Installation and wiring of single-phase electric meter with lighting |
1 item |
1 single-phase electric meter, 1 leakage protector, 1 5-hole socket, 2 double-control switches, 1 single-control switch, 1 lamp holder (with incandescent lamp), 1 fluorescent lamp (with lamp tube, ballast, starter) |
4 |
K24 |
Circuit wiring for motor operation control with fuses (circuit breakers), instruments, and current transformers |
1 item |
3P circuit breaker, 5 fuses, 1 AC contactor, 1 thermal relay, 1 current transformer, 1 red, yellow, and green button |
5 |
K25 |
Electrical experiment connection line |
1 set |
According to the characteristics of different experimental projects, two different experimental connecting wires are equipped. The strong current part adopts a high-reliability sheath structure plug-in connecting wire (there is no possibility of electric shock). The inside is made of oxygen-free copper wire drawn into a multi-strand wire as thin as a h*r to achieve the purpose of ultra-softness. It is covered with a nitrile polyvinyl chloride insulation layer, which has the advantages of softness, high voltage resistance, high strength, anti-hardening, and good toughness. The plug adopts a solid copper part with a beryllium light copper shrapnel, which has safe and reliable contact; the weak current part adopts an elastic beryllium light copper exposed structure connecting wire. Both wires can only be matched with sockets with corresponding inner holes and cannot be mixed, which greatly improves the safety and rationality of the experiment. |
6 |
K11 |
multimeter |
1 set |
Digital |
7 |
COM1 |
Three-phase asynchronous motor |
1 set |
380V |
8 |
COM2 |
Operation screen |
1 set |
Steel test screen |
VI. Tr*ning Project
1. Wiring of one-way continuous operation of electric motor (with inching control).
2. Wiring and safe operation of three-phase motor forward and reverse operation.
3. Installation and wiring of single-phase electricity meter with lighting.
4. Circuit wiring for motor operation control with fuses (circuit breakers), instruments, and current transformers.
5. Wire connection
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