I. Overview

This device is designed in accordance with the requirements of the “Worker Grade Standard” and “Vocational Skill Appraisal” issued by the Ministry of Labor and Social Security. It is applicable to the electrical control circuits required by the textbooks Primary Maintenance Electrician, Intermediate Maintenance Electrician, and Advanced Maintenance Electrician. Through training with the PLC programmable controller, frequency converter, and corresponding training modules equipped with the device, users can quickly master the practical application technologies and operational skills required by the courses. It is targeted, practical, scientific, and advanced, meeting the requirements of the assessment outline for intermediate and advanced maintenance electricians. It is an ideal equipment for skill assessment of intermediate and advanced maintenance electricians in various labor vocational skill appraisal departments, colleges and universities, and technical schools.

II. Device Features:

1. The components of the electrical control circuit are mounted on a mounting plate (as a hanging board), which is easy to operate and replace, facilitating function expansion or development of new training. The selection of operation contents is typical and practical;
2. The operation platform only needs a three-phase four-wire AC power supply to be put into use;
3. The control circuit for skill training and the specially designed small motor can simulate various electrical drive systems in factories, and can meet the technical requirements of maintenance electricians for installation, debugging, fault analysis, and troubleshooting;
4. The device is equipped with voltage-type and current-type leakage protectors to ensure the personal safety of operators;
5. All components are led to terminals through wires, and students only need to wire on the terminals, which is beneficial to protect the components;
6. Wiring is done through wire troughs for process wiring training.
7. It has a timer and alarm recorder, providing a unified standard for the assessment of students’ practical skills.

III. Technical Performance:

1. Input voltage: Three-phase four-wire (or three-phase five-wire) ~380V±10% 50Hz
2. Working environment: Temperature -10～＋40℃; Relative humidity <85% (at 25℃); Altitude <4000m
3. Device capacity: <1.5KVA
4. Weight: 100Kg
5. Overall dimensions: 1700×700×1630mm³
6. Leakage protection action current: ≤30mA; Leakage protection action time: ≤0.1s.

IV. Basic Configuration and Functions of the Device

(I) BH02 Power Control Box

The main control screen has a double-layer iron matte dense-grain spray structure with an aluminum panel.

(II) Resources Equipped with the Main Control Function Board

1. Three-phase four-wire power input, after passing through the leakage protector, goes through the main switch, controls the contactor on/off through start and stop buttons, and is equipped with an emergency stop control button;
2. The control screen is equipped with a 450V pointer-type AC voltmeter, which can observe the three-phase grid voltage through a band switch;
3. Timer and alarm recorder (service manager), which is usually used as a clock, with functions such as setting time, timing alarm, and cutting off power; it can also automatically record the total number of leakage alarms and power short circuits caused by wiring or operation errors, providing a unified standard for the assessment of students’ practical skills;
4. AC circuit measuring meter: 8-digit LED display, which can simultaneously measure current I, voltage V, power KW, electric energy KWh, and working time T in the working circuit. Accuracy: 1.0 class.
5. AC low-voltage power supply: Equipped with a transformer, with primary 220V, secondary 26V and 6.3V AC voltage. 6.3V is used for the signal indicator power supply, and 26V is used for the AC power supply of the rectifier circuit in energy-consuming braking;
6. 4 diodes (model 5408) for the rectifier circuit of energy-consuming braking;
7. Three 75Ω/75W resistors for motor step-down starting, and one 10Ω/25W resistor for asynchronous motor energy-consuming braking.

(III) Training Desk

The training desk has a double-layer iron matte dense-grain spray structure, with a fireproof, waterproof, and wear-resistant high-density board desktop. It has a solid structure and an elegant appearance. The table is equipped with two drawers (with locks) on the left and right, and a cabinet, which can be used to place hanging parts and training items respectively.

V. Training Projects

VI. Configuration of Training Components

PLC Training Modules (Complete Set)