First, the productOverview:
MY-201C Electrician, Electronic and Trailer Training Assessment Device is according to the Ministry of Education"Revitalize the 21st century vocational education curriculum reform and textbook construction plan"and in accordance with the teaching and training requirements of vocational education, covered:"Circuit analysis""Electrician Basics""Electricians" "Motor control""Relay contact control"It is suitable for the new construction, expansion and upgrading of laboratories such as higher vocational colleges, technical schools, vocational schools, etc., and provides ideal training equipment for schools to quickly open training courses.
Second, the deviceFeatures:
1. Strong comprehensiveness: It integrates all the training contents of the basic courses of electrical engineering in various schools in China.
2. The depth and breadth of the training can be flexibly adjusted according to the needs, and the device adopts a hanging box structure, which is easy to replace, and the addition of components can expand the function or develop new training projects.
3. The measuring instrument has high accuracy and adopts digital and intelligent mode, which is in line with the development direction of modern measurement.
4. High safety performance: the 380V AC output on the training screen is equipped with a set of overcurrent protection devices controlled by the single-chip microcomputer throughout the whole process, and the current exceeds the set value, and the system will alarm and cut off the total power supply to ensure the safety of the equipment.
5. The structure of the device is reasonable, the performance is superior, the supporting facilities are complete, and the appearance is luxurious and atmospheric.
6. According to different voltages, the training connection line and socket adopt different structures, which are safe and reliable to use.
3. Technical performance:
1. Working power supply: three-phase four-wire (or three-phase five-wire) 380V 5% 50Hz
2. Temperature: -10 40, relative humidity 85% (25).
3. Device capacity: 15kva
4. Weight: 100kg
5. Dimensions: 1600mm 700mm 1500mm
Fourth, the basic configuration and function of the training device
The device is composed of a main chassis, an experimental table, a training screen, a training hanging box, a mobile low cabinet, an oscilloscope rack, a student stool, etc. The training device bracket and the training table can be combined and disassembled. The bracket and table legs are integrated, the aluminum alloy structure, the training hanging box, and each experimental module can be freely combined and placed according to the experimental needs.
(1) Main chassis
The main chassis is a ferrous double-layer matte dense grain spray structure with aluminum panels, which provides AC power supply, DC regulated power supply, constant current source, function signal generator (including frequency meter), test instrument and training equipment for the training hanging box.
The specific functions are as follows:
1. Control and AC power supply part
1) Provide three-phase fixed 380V AC power supply, direct short circuit or overload between phases and lines by the single-chip microcomputer throughout the whole process automatic monitoring and automatic protection. After the current type voltage type leakage switch is turned on, the start and stop buttons control the working power supply of the training station. It has alarm and reset functions.
2. Fluorescent lamp lead port.
3. Equipped with a set of 220V 30W fluorescent tubes and brackets for trainingA set of 220V 30W fluorescent tubes and brackets are placed at the bottom of the main chassis, which does not take up space and is convenient for observation of training conditions.
4. DC power supply part
1) Dual-channel constant current regulated power supply, the output voltage of both channels is 0-30V, and the built-in relay automatically shifts. The multiturn potentiometer is continuously adjusted and easy to use. The maximum output current is 15A, with preset current limit protection function, the output has 0Level 5 digital ammeter, voltmeter indication, voltage stability 10-2, load stability 10-2, ripple voltage 5mv.
2) Low-voltage DC regulated power supply: +5V, +24V, 12V with short circuit protection function.
3) Constant current source: a 0-500mA continuously adjustable constant current source, divided into three gears of 2mA, 20mA and 500mA, equipped with a digital DC milliampere meter to indicate the output current, with output open circuit and short circuit protection functions.
5. Power output function generator frequency meter:Direct digital frequency synthesis (DDS) is used to generate high-precision sine, square, and triangular waves. Large-screen LCD is used to display the output frequency, waveform, and attenuation value.
6. Intelligent measuring instrument:
6.1. 1 intelligent AC voltmeter: measurement range: 0-1000V, set 1V 10V 100V 1000V four ranges, six-digit digital display of measured values. The instrument adopts modern technology, digital Chinese display, with intelligent, digital, upper computer communication function, through the button can set the instrument operation, range manual, automatic switching mode, calibration, zero, filter stage setting, communication address setting, over-range automatic alarm prompt and protection and other functions. The hardware part has strong integrity, high integration, made of surface mount technology, industrial plastic shell, panel embedded installation, stable use, easy to replace and upgrade maintenance.
6.2. 1 intelligent AC ammeter: measurement range: 0-5A, set 10mA 500mA three-step range, six-digit digital display of measured value. The instrument adopts modern technology, digital Chinese display, with intelligent, digital, upper computer communication function, through the button can set the instrument operation, range manual, automatic switching mode, calibration, zero, filter stage setting, communication address setting, over-range automatic alarm prompt and protection and other functions. The hardware part has strong integrity, high integration, made of surface mount technology, industrial plastic shell, panel embedded installation, stable use, easy to replace and upgrade maintenance.
6.3. 1 intelligent DC voltmeter: measurement range: 0-1000V, set 1V 10V 100V 1000V four ranges, six-digit digital display of measured values. The instrument adopts modern technology, digital Chinese display, with intelligent, digital, upper computer communication function, through the button can set the instrument operation, range manual, automatic switching mode, calibration, zero, filter stage setting, communication address setting, over-range automatic alarm prompt and protection and other functions. The hardware part has strong integrity, high integration, made of surface mount technology, industrial plastic shell, panel embedded installation, stable use, easy to replace and upgrade maintenance.
6.4. 1 intelligent DC ammeter: measurement range: 0-5A, set 10mA 500mA three-level range, six-digit digital display of the measured value. The instrument adopts modern technology, digital Chinese display, with intelligent, digital, upper computer communication function, through the button can set the instrument operation, range manual, automatic switching mode, calibration, zero, filter stage setting, communication address setting, over-range automatic alarm prompt and protection and other functions. The hardware part has strong integrity, high integration, made of surface mount technology, industrial plastic shell, panel embedded installation, stable use, easy to replace and upgrade maintenance.
6.5. 1 power and power factor table: power measurement accuracy 0Level 5, power factor measurement range 03-1.0, the voltage current range is 450V and 5A. Six-digit digital display of active power, reactive power, total power, power factor, voltage, current, load type, load type: L, R, C. The instrument adopts modern technology, digital Chinese display, with intelligent, digital, upper computer communication function, through the button can set the instrument operation, range manual, automatic switching mode, calibration, zero, filter stage setting, communication address setting, over-range automatic alarm prompt and protection and other functions. The hardware part has strong integrity, high integration, made of surface mount technology, industrial plastic shell, panel embedded installation, stable use, easy to replace and upgrade maintenance.
(2) Training hanging boxes and accessories
1. DGJ-10 Circuit Basic Training (1).
Complete practical training on superposition principle, Kirchhoff's law, Thevenin's theorem, Norton's theorem, reciprocity theorem, Ohm's law, etc.; Provide resistance, inductance, capacitor, complete R, L, C series resonance, first-order and second-order dynamic circuit research, voltage source and current source equivalent conversion, load to obtain maximum power conditions, resistance series, parallel and other practical training.
2. DGJ-11 Circuit Basic Training (2).
Provide bulbs, voltage regulators, potentiometers, resistance boxes, etc., and complete the mapping of volt-ampere characteristics of known and unknown circuit components, charging and discharging capacitors, etc.
3. DGJ-12 AC circuit training (1).
Resistor, inductor, and high-voltage capacitors (047uf/500v、1uf/500v、2.2uf/500v、4.7UF 500V), complete the training on improving the power factor of fluorescent lamps, the training of RLC series AC circuits, the training of RLC parallel AC circuits, and the characteristics of inductors and capacitance components in DC circuits and AC circuits.
4. DGJ-14 Circuit Basic Training (3).
Instrument range extension training (ammeter, voltmeter range extension).
5. DGJ-15 Electrician Comprehensive Skills Training (1).
Design of ammeters, voltmeters, and ohmmeters.
6. DGJ-16 Electrician Comprehensive Skills Training (2).
The application training of operational amplifiers, the design and application of alarm protection circuits, the design and application training of rectifier filter circuits, and the design and application training of overcurrent protection.
7. DGJ-18 core transformer, mutual inductance watt-hour meter training
One core transformer (50VA, 36V 220V), with fuses and current sockets on the primary and secondary sides, which is convenient for testing and can reliably protect against transformer damage; A group of mutual inductance coils, two air-core coils L1 and L2 are installed on the carriage, the distance between the two coils can be adjusted, and the small coil can be put into the large coil, equipped with a large and small iron rod, nine bulbs, a watt-hour meter, the specification is 220V, 3 6A, and its power line and load line have been connected to the binding post of the watt-hour meter binding frame, which is convenient for practical training8. Electrical control training hanging box:Aluminum panel, the back cover is composed of drawing molded aluminum profiles and injection molded plastic parts, and the wiring points of electrical components have been led to safety sockets, so that the experimental wiring is convenient, safe and fast.
1) Electrical control training hanging box 1: 2 AC contactors.
2) Electrical control training hanging box 2: 1 AC contactor and 1 thermal relay.
3) Electrical control training hanging box three: 1 time relay, button red, yellow, green.
4) Electrical control training hanging box four: 4 travel switches, 1 AC contactor, 1 button, 2 resistors (510 25W).
9. 2 sets of three-phase intersecting motors380V 180W, aluminium housing.
10. DG-11 digital circuit, analog circuit experimental pendant:
Provide regulated power supply four channels (5V 0.).5a ； 15v/ 0.5A, all have short-circuit protection, automatic recovery function), low-voltage AC power supply (0V, 6V, 10V, 14V tap each and center tap 17V two), four-digit decimal decoding display, two sets of dials, 8-bit logic switch, 8-bit level indicator, three-state logic pen, single pulse source, speaker, oscillation coil, button, bridge stack and potentiometer, etc. In addition, there are some highly reliable round foot IC sockets (8P 2pcs, 3pcs 14p, 4pcs 16p, 1pcs 28p, 1pcs 40p) and reliable silver-plated long copper tubes (for inserting resistors, capacitors, potentiometers, transistors and other components). The experimental hanging box is equipped with: common emitter single tube amplifier negative feedback amplifier experiment board, emitter follower experiment board, RC sinusoidal oscillator experiment board, difference amplifier experiment board, OTL power amplifier experiment board a total of five pieces and a number of discrete components, which can be flexibly combined with fixed lines or discrete components for experiments, which is conducive to improving students' hands-on ability.
11. Training connection line
According to the characteristics of different training projects, equipped with two different specifications of training cables, strong and weak current are made of high-reliability sheath structure pistol plug connection line (there is no possibility of electric shock), which is made of oxygen-free copper wire into a hair-thin multi-strand wire, to achieve the purpose of super software, outer nitrile PVC insulation layer, with soft, high pressure resistance, high strength, anti-hardening, good toughness and other advantages, the plug is made of solid copper parts jacket beryllium light copper shrapnel, safe and reliable contact; Both kinds of wires can only be matched with the socket of the corresponding inner hole, and cannot be mixed, which greatly improves the safety and rationality of the training.
(3) Training table
The structure of the experimental table: the specification of the experimental table is 1600 (length) * 700 (width) * 1500 (height), the main structure of the experimental table is all made of high-performance surface oxidized aluminum profile and one-time forming aluminum die-casting frame connecting components, the connecting components are made of die-casting molding process (non-welding process), through machining, shot blasting, sandblasting, surface electrostatic spraying process, easy and fast installation, users can DIY assembly. The table column adopts industrial aluminum profile forming process, surface oxidation treatment, cross-sectional size: 70 70mm, with grooves on all sides, the width of the groove is about 8mm, and the end is equipped with plastic plugs. The table top is made of 25mme1 grade melamine veneer, and a support frame is set under the table top, and the bearing capacity is not less than 300kg. Equipped with a storage cabinet to store components and tools, 4 high-strength universal brakeable PU casters at the bottom of the storage cabinet are convenient for movement. The overall simplicity of the training device is not simple, high-end atmosphere, in line with the aesthetics and development trend of modern products.
The two legs behind the experimental table extend upward, and two aluminum profiles formed by special drawing dies form an electrical experimental hanging box bracket. The bracket is matched with the experimental hanging box of the main chassis, which is convenient to go up and down, and can be moved left and right freely.
(3) Storage cabinets:Equipped with a storage cabinet to store training modules and tools, and 4 high-strength universal brakeable PU casters at the bottom of the storage cabinet are convenient for movement.
(4) Student stools
1 stool leg 30 30 12mm square tube;
2 Draw the pipe with 30 30 12mm square tube;
3. The bench surface is made of 240 340 25mm particleboard pasted with wood grain paper, the height of the bench is 40cm, and the bench surface and the metal bench frame are fixed with a large flat-head anti-scratch screw and an anti-regression nut;
4. Anti-rust treatment: metal parts need to be pickled, phosphated, and derusted on the surface, and treated with high-pressure electrostatic spraying and high-temperature baking, which requires strong adhesion, anti-oxidation, no peeling, smooth and beautiful, and the color of the metal table is gray.