Русский
NTC-01.01.3 “Electrical engineering and basic electronics M1”
Br0.00
The laboratory stand is designed for studying electrical engineering and basic electronics in universities and secondary technical educational establishments.
- Description
- Experiments provided
- Technical specifications
- Scope of delivery
- Additional equipment (specified when ordering)
- frame with part of equipment, electronic boards, power module, front panel and desktop of integrated working table;
- aggregate, containing two electrical machines: asynchronous motor with squirrel-cage rotor and direct current motor with separate excitation. Optical velocity sensor is built in.
Has two h/w versions: full size bench top version and table version.
The frame includes:
- power unit +24V 0.5 A,+5V 0.5A; +12V 0.5A;
- rotation frequency meter board with resolution 1rps;
- thyristor controlled rectifier and pulse width modulator board;
- automatic transformer 0,16kW;
- power transformer 0.1 kW
- capacitance box;
- load resistors;
- measuring complex.
The front panel shows electrical circuits of objects under study. All the circuits shown on the panel are divided into groups according to the subject-matter of works. Patchholes, indicating panel-mounted instruments, switching equipment and controls allowing to alter operating parameters are mounted on the panel.
The controls include:
- automatic transformer switches, which allow to alter voltage between 0..50V with a 1V step;
- variable resistor block switches which allow to alter resistance between 0..10kOhm with 10Ohm step and 0..220Ohm with 22Ohm step;
- variable load resistor regulators 0…7kOhm and 0…1.5kOhm;
- capacitance box toggle switches which allow to alter capacity between 0..12,7 μF with 0,1 μF step;
- assigning potentiometer of one-phase bridge thyristor adjustable rectifier;
- assigning potentiometer of pulse width modulator.
Assemble the circuit of the object under study using unified jumpers allowing to assemble circuits while keeping them in evidence. Eleven digital measuring instruments with accuracy rating 1.5 are mounted on the panel, among them:
- voltmeters 4 pieces;
- ammeter 4 pieces;
- wattmeter 3 piece;
Measurements are made with built-in digital measuring complex connected to the personal computer through USB.
The measurement complex consists of four-galvanically isolated multi-channel ADC, module of microprocessor measurement system, providing multi-channel measurements in three-phases with dispaying of measured current, voltage and power values on the digital indicators.
The special sockets for connection to separate inputs of the measuring system, designed to realize the functions of two-channel oscilloscope, are installed on the panel of the training system. They provide to measure oscilloscope pictures of the signals in control points.
The experiments can be conducted both in manual and PC-assisted modes.
The laboratory stand is supplied with:
- software for automatically establishing communication with the stand when it is connected to a PC, visual displaying of measurement results on the PC screen in real time mode, grouping the displayed data depending on the laboratory work performed, automating the process of registering the received data with adding them into a table, copying or saving data for further processing;
- a set of teaching materials and technical documentation intended for the teaching staff.
Experiments provided
- Measuring resistance by various methods.
— Measuring resistance by indirect method (ammeter and voltmeter).
— Measuring resistance by direct current bridge.
— Measuring resistance by ohmmeter. - The study of resistor connection circuits.
— Series connection of resistors.
— Parallel connection of resistors.
— Mixed connection of resistors. - Determining voltage and power loss in power lines.
— The study of influence of DC power line resistance and load on the voltage loss.
— The study of AC power line operation modes at different load power factors. - Direct current linear circuits.
- Determining parameters and main characteristics of direct current motor with separate/parallel excitation.
— Calculating and building of DCM mechanical characteristics.
— Building motor operating characteristics. - Determining parameters and main characteristics of direct current generator with separate/parallel excitation.
— Building idling characteristics and external generator characteristic. - The study of air gap in induction barrel.
- Determining parameters and study of AC power line operation modes with series connection of inductor, resistor and capacitor.
— Determining parameters of equivalent circuit of inductor with magnetic core.
— The study of electric line main operation modes at series connection R,L,C. - The study of AC forked circuit with parallel connection of active resistance, induction coil and capacitor.
— The study of electric circuit main operation modes at parallel connection R,L,C. - Determining parameters and the study of three-phase circuit in wye operation mode.
— The study of symmetrical resistive load with neutral wire.
— The study of uniform load without neutral wire.
— The study of uniform load with neutral wire. - Determining parameters and the study of three-phase circuit in delta operation mode.
- Determining parameters and main characteristics of one-phase transformer.
— The study of idling and transformer short circuit.
— Characterization at cosφ=1.
— The study load influence on external characteristic and transformer efficiency. - The study of non-sinusoidal periodic current linear circuits containing inductor and capacitor.
— The study of non-sinusoidal periodic current linear circuits calculation methods.
— The study of influence of induction capacity elements on current value at non-sinusoidal voltage.
— The study of operation principle of L filters and methods of calculating their parameters. - The study of starting asynchronous motor with squirrel-cage rotor.
— The study of asynchronous motor direct start.
— The study of ways for lowering asynchronous motor starting current - Characterization of asynchronous motor with squirrel-cage rotor.
- Characterization of semiconductor diode and stabilitron.
- Static characterization of bipolar transistor.
- One stage transistor amplifier.
- The study of one-phase non-controlled and controlled rectifiers.
- The study of ripple filters.
- Ferroresonance circuits.
- Investigation of the process of charging the capacitor from a constant voltage source while current is limited by the resistor.
- Investigation of two-stage amplifiers with a direct connection.
- Investigation of the characteristics of transitor time relay with a time setting RC-circuit.
- Investigation of the generators of sinusoidal oscillations.
- Investigation of the operating principle of width-impulse voltage converter (WIC).
- Investigation of the operating principle of Schitt trigger and digital counters in integrated form.
Technical specifications
| Power supply | 3~50 Hz 380 V 3P+PE+N | |
| Power consumption, kW, max | 0,8 | |
| Stand overall dimensions, max: | ||
| Width, mm | 1310 | |
| Height, mm | 1470 | |
| Depth, mm | 610 | |
| Weight, kg, max | 80 | |
| Desktop version overall dimensions, max: | ||
| Width, mm | 1310 | |
| Height, mm | 680 | |
| Depth, mm | 600 | |
| Weight, kg, max | 65 | |
Technical specifications of MPMS:
| Number of galvanically isolated ADC | 4 | |
| Number of channels in one ADC | 3 | |
| Frequency of ADC digitization | 31 kHz | |
| Range of measured voltages | ||
| from | ±0.5V | |
| up to | ±550V | |
| Range of measured currents | ||
| from | ±4mA | |
| up to | ±3A | |
| Accuracy rating, up to | 1.5% | |
Scope of delivery
- training laboratory system – 1 pc.;
- supplementary materials in electronic format – 1 pc.;
- passport – 1 pc.;
- a set of jumpers – 1 pc.