1. Intermediate and senior electrician training and assessment devicePeculiarity.
1.The training components are installed on the mounting board as a hanging board, which is easy to operate, easy to replace, and can expand the function or develop new trainingThe selection of operation content is typical and practical.
2.The control circuit and supporting small motor for skill training are specially designed to simulate various electric drive systems of the factory, and can meet the skill training requirements of maintenance electricians such as installation, commissioning, fault analysis and troubleshooting.
3.The device is equipped with a voltage type leakage protector and a current type leakage protector to ensure the safety of the operatorThe output of each power supply has the functions of monitoring and short-circuit protection, and each measuring instrument has a reliable protection function, which is safe and reliable to use.
4.All components are led to the terminal through the wire, and the student only needs to wire the terminal when wiring, which is conducive to protecting the components.
IIIntermediate and senior electrician training and assessment deviceTechnical performance1.Input voltage: three-phase four-wire 380V 10% 50Hz
2.Unit capacity: 15kva
3.Dimensions: 168m×0.7m×1.6m
3. Intermediate and senior electrician training and assessment devices are equipped
The training device is composed of a control panel, a training table, an electrical control hanging box, a motor, etc.
a) Control screen.
The control panel is made of iron double-layer matte dense grain spray structure and aluminum panel. The specific functions are as follows:
1.Main control board.
1) Three-phase four-wire power input, operated by the contactor through the start and stop buttons, and the main switch is turned onIt is equipped with leakage protectors, fuses and other devices. The control panel is equipped with a single-phase three-pole 220V power socket and a three-phase four-pole 380V power socket.
2) It is equipped with a 450V pointer AC voltmeter, which can monitor the grid voltage through the band switch.
2.AC power.
There is a transformer, 220V on the primary side, 26V and 6 on the secondary side3V AC voltage, 26V AC power supply for rectifier circuits in energy braking.
3.Rectifier diodes: 1N5408 four, rectifier circuit for energy consumption braking.
4.Three 75 75 W resistors are used for step-down starting of the motor, and one 10 25W resistor is used for energy consumption braking of the asynchronous motor.
5.AC and DC meters.
AC voltmeter: 0 500V with mirror AC voltmeter, accuracy 1Level 0.
AC ammeter: 0 5A with mirror AC ammeter, accuracy 1Level 0, with functions such as over-range alarm, indication, and cutting off the total power supply.
Power and power factor table: It is composed of a set of microcomputer, high-speed, high-precision AD conversion chip and full digital display circuit. The intelligent control mode of man-machine dialogue is realized through keying and digital display window. In order to improve the measurement range and test accuracy, the sampling signal of the instantaneous value of the measured voltage and current is converted by A D, and the active power and reactive power are calculated by a special DSP. The measurement accuracy of power is 0Level 5, voltage and current range are 450V and 5A respectively, which can measure the active power, reactive power, power factor and the nature of the loadIt can also store and record 15 groups of test result data of power and power factor, and can be queried one by one.
2) Training table.
The training desk is an iron double-layer matte dense grain spray structure, and the desktop is a fireproof, waterproof, wear-resistant high-density boardIt is equipped with a locking drawer for placing tools and materials, and there is a hanging cabinet under the test bench, which can be placed in the training module, which is beautiful and generousThe bottom of the lab table is equipped with four universal wheels for easy movement.
3) Training hanging box
Fourth, the list of components required for the training project of the training device of the intermediate and senior electrician
Fifth, the training content of the training and assessment device of intermediate and senior electricians
1.Three-phase asynchronous motor direct start control.
2.Three-phase asynchronous motor contactor jog control line.
3.Three-phase asynchronous motor contactor self-locking control line.
4.Forward rotation control line with overload protection.
5.Three-phase asynchronous motor contactor with button interlocking forward and reverse control circuit.
6.Sequential control of three-phase asynchronous motors.
7.Multi-site control of three-phase asynchronous motor
8.Contactor control y buck start control line.
9.Time relay control y buck start control circuit.
10.Installation and commissioning, power-on delay with DC energy consumption braking, Y- start control line.
11.Forward and reverse control lines for contactor interlocking.
12.Button contactor composite interlocking motor forward and reverse control line.
13.The contactor controls the series resistance step-down start control circuit.
14.The time relay controls the series resistor step-down start control circuit.
15.The workbench automatically shuttles back and forth to control the line.
16.Half-wave rectifier energy consumption braking control circuit.
17.Single-phase operation reverse braking control circuit.
18.Wiring, failure and maintenance of C620 lathe.
19.Z3040 radial drilling machine wiring, fault and maintenance.
20.Z3050 radial drilling machine training: let students master the electrical working principle of Z3050 radial drilling machine and its troubleshooting skills, and can carry out circuit assessment of 20 fault points.
21.X62 universal milling machine training assessment pendant: let students master the electrical working principle of X62W milling machine and its troubleshooting skills, and can carry out circuit assessment of 20 fault points.