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JG-790E electrician and electronic technology training assessment device
Electrical and electronic technology training assessment device
This device is a product developed by our company in accordance with the requirements of the Ministry of Education's "Rejuvenating the 21st Century Vocational Education Curriculum Reform and Textbook Construction Planning" and in accordance with the teaching and training requirements of vocational education. The training content covers "circuit analysis" and "electrical basics" "Electrical engineering", "analog electronic technology", "digital electronic technology", "motor control", "relay contactor control" and other courses of training programs, the structure is reasonable, the training components using the box type, easy to increase or expand the training project . The device is suitable for new or expanded training rooms in higher vocational, vocational, technical, and vocational schools, and provides ideal training equipment for schools to quickly open training courses.
1. Technical performance
1. Input power: three-phase four-wire (or three-phase five-wire) ~ 380V ± 5% 50Hz 2. Temperature: -10 ℃ ~ + 40 ℃, relative humidity <85% (25 ℃) 3. Device capacity: <1.5 KVA 4. Weight: 150Kg 5. Dimensions: 1400mm × 700mm × 1500mm
Second, the basic configuration and function of the training device This training platform is mainly composed of training screen, training hanging box, training table and so on.
(1) Training screen The training screen is an iron double-layer matte dense grain spray-painted structure, and an aluminum panel provides AC power, DC stabilized power, constant current source, function signal generator, and test for the training hanging box. Meters and training devices, the specific functions are as follows: 1. Control and AC power supply
(1) Provide three-phase fixed 380V AC power, and its output is independently controlled by the combination switch. Direct short circuit or overload between phases and lines is automatically monitored and protected by the single chip microcomputer. After the current-type voltage-type leakage switch is turned on, the working power of the training platform is controlled by the start and stop buttons. With alarm and reset functions.
(2) Provide a single-phase 0 ~ 250V / 2A continuously adjustable AC power supply (equipped with a 0.5KVA single-phase voltage regulator). At the same time, a set of 0-240V continuously adjustable DC power can be obtained through the rectification link, and a meter indicates the output voltage value.
(3) Provide 2V, 4V, 6V, 8V, 10V, 12V, 14V, 16V, 18V, 20V, 24V low-voltage AC power supply, current 1.5A.
(4) Two ~ 220V sockets are provided to provide working power for external instruments.
(5) Equipped with a set of 250V / 30W fluorescent tube and bracket for training. 2.DC power supply
(1) Dual constant-current regulated power supply, both output voltages are 0-30V, built-in relay automatically shifts gears. The multi-turn potentiometer is continuously adjusted and easy to use. The maximum output current is 1.5A, with preset current limiting protection function. The output has 0.5 level digital ammeter and voltmeter indication, voltage stability is 10 -2, load stability is 10 -2, and ripple voltage is 5mv.
(2) Low voltage DC stabilized power supply: + 5V, current 0.5A, indicated by meter.
3. Function signal generator: output sine wave, rectangular wave, triangle wave (1) Frequency range: 5Hz-550KHz, including five frequency bands. (2) Frequency indication: Read directly from the Hz meter. (3) Voltage output range: sine wave 5Hz-250KHz > 4.5V, 250KHz-550KHz > 3.5Hz Three-level attenuation: 0db, 20db, 40db, continuous rectangular wave with fine adjustment: 5Hz-250KHz > 4.5V, 250KHz-550KHz > 3.5Hz, continuously adjustable triangle wave: 5Hz-250KHz> 1V 4. Continuous counting pulse: output frequency 0.5-300KHz. 5, single pulse: each time can output a pair of positive and negative pulses. 6. Instrument section (1) A true RMS AC digital voltmeter, measuring range: 0-500V, 0.5 level, three and a half digital display. (2) A true RMS AC digital ammeter, measuring range: 0-2000mA, 0.5 level, three and a half digital display. (3) A DC digital voltmeter, measuring range: 0-200V, 0.5 level, three and a half digital display. (4) A DC digital current meter, measuring range: 0-2000mA, 0.5 level, three and a half digital display. (5) The single-phase intelligent power and power factor meter consists of a set of microcomputer, high-speed, high-precision A / D conversion chip and full digital display circuit. Man-machine dialogue function control mode is realized through key control and digital display window. In order to improve the measurement range and test accuracy, the sampled signal at the instantaneous value of the measured voltage and current is A / D converted, and the dedicated DSP is used to calculate the active power. The power measurement accuracy is 0.5 level, the voltage and current ranges are 450V and 5A respectively. It can measure the active power, power factor and load properties of the load. It can also store and record 15 sets of power and power factor test result data, and Group query. (6) A pointer type DC microampere meter with a range of 100uA and accuracy of 1.5. 7. Seven-segment decoder: 6 sets of seven-segment decoder and corresponding decoding display digital tube 8. Logic level display: 8-bit LED display 9. Logic level switch: 8-bit switch level output 10. Experimental management The device is usually used as a clock. It has the functions of setting the training time, timing alarms, and cutting off the power supply. In addition, it automatically records the total number of leakage alarms caused by wiring or operation errors, which provides a unified standard for student training skills assessment.
(II) Practical training box and accessories 1. DGJ-01 basic circuit of DC circuit (1) 2. DGJ-02 basic circuit of DC circuit (2) 3. DGJ-03 basic principle of AC and magnetic circuit Box (3) 4, DGJ-04 AC three-phase load hanging box (4) 5, DGJ-05 basic law theorem hanging box (5) 6, DZJ-01 triode amplifier circuit 7, DZJ-02 field effect tube and negative feedback Amplifying circuit 8, DZJ-03 integrated operational amplifier application (1) 9, DZJ-04 integrated operational amplifier application (2) 10, DZJ-05 integrated operational amplifier application (3) 11, DZJ-06 oscillator circuit and power amplifier circuit 12, DZJ-07 DC stabilized power supply circuit 13, DZJ-08 digital circuit 14, DZJ-09 comprehensive training 15, mesh plate and electrical control components (1 mesh plate, 1 three-phase switch blade, AC contactor 4 pcs, 1 time relay, 1 thermal relay, 2 iron shell buttons, 20 terminal block rows) 16. 1 three-phase squirrel cage AC motor (380V Y / △ 180W) 17, a set of connecting wires 18, A set of tools such as needle-nose pliers, screwdrivers, wire strippers, etc. (3) Training table The training table is made of iron double-layer matte dense grain spray coating , The table top is fire-resistant, waterproof, wear-resistant high-density board, sturdy structure, beautiful appearance.
Electrical and electronic technology training assessment device
Training Projects
(I) The training project of basic skills of electricians and the "primary electrician technical training assessment device". ( Teaching Equipment | Teaching Instruments )
(2) Training project of electrician technical training and "electronic technology comprehensive training assessment device".

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