NTC-01.01.4 “Electrical engineering and basic electronics M2”

Br0.00

The training laboratory stand is dedicated for using it as a training equipment at secondary specialized colleges and higher education establishments to perform laboratory works for courses of electrical engineering and basic knowledges of electronics.

Categories: New products, Electrical engineering and basic electronics

Structurally the stand consists of two parts:

housings of Module 1 and Module 2, where is mounted a part of electric equipment, electronic cards, front panel and integrated work table top;
an electric machine unit (twin) containing two electric machines: an asynchronous electric motor with a squirrel-cage rotor and a direct current electric motor of independent/sequential excitation. An optical speed sensor is installed on the machine unit.

The housing of the stand contains:

power supply unit;
board of thyristor-controlled rectifier and pulse-width converter;
adjustable AC voltage source based on autotransformer;
capacitor stores;
load resistors;
digital measuring complex with value displaying;
card for measuring the rotation speed of electrical machines with indication;
digital two-channel oscilloscope;
signal generator.

On the front panels of the stand are shown electrical circuits of the objects under study, which are divided into groups in accordance with the topics of the laboratory work being carried out. The front panels also have switching sockets and equipment, indicators of digital measuring instruments, as well as controls for changing parameters during laboratory work.

The controls and other front panel elements of the Module 1 include:

mains switch with voltage control in each phase;
switch block variable resistor;
laboratory autotransformer switch;
signal generator output sockets;
DC EMF regulators;
jacks for connecting to channels of the built-in digital signal with switches for voltage dividers of the input signal.
capacitor stores;
indication of a digital measuring complex.

Measurements are doing using a digital measuring complex built into the stand and connected to a personal computer via the USB bus. The measuring complex consists of 4 galvanically isolated multi-channel analog-to-digital converters, a module of a microprocessor measuring system that provides multi-channel measurements in all three phases with the output of the measured values of current, voltage and power onto digital indicators. The measuring complex has opportunity for measuring both direct and alternating current.

The controls and other front panel elements of the Module 2 include:

setpoints for the control system of the controlled rectifier;
switches for adjustable rheostats of the armature and excitation circuits of the DC motor.
master for PWC;
connector for connecting a twin of an electromagnetic unit.

The stand is accompanied with a set of teaching materials and technical documentation intended for the teaching staff.

Experiments provided

Electrical measuring instruments and measurements in electrical circuits. DC measuring bridge.
The simplest linear DC electrical circuits. Connection circuits of elements. Experimental determination of parameters.
Linear DC circuits with two power supplies.
Series connection of non-linear elements of the DC circuit. Branched non-linear DC circuit.
Experimental determination of the parameters of elements in DC circuits.
Nonlinear AC circuits.
Frequency properties of electrical circuits.
Electric circuit of alternating current with series connection of elements.
AC circuit with parallel connection of elements.
Studying the three-phase circuit when consumers are connected according to the “star” circuit.
Study of a three-phase circuit when consumers are connected according to the “triangle” scheme.
Investigation of Diode Characteristics.
Measuring the static characteristics of a bipolar transistor.
Single stage bipolar transistor amplifier.
Measuring the static characteristics of a field-effect transistor.
Single stage FET transistor amplifier.
Studying the optotransistor.
Studying the
Studying the single-phase uncontrolled and controlled rectifiers.
Studying the ripple filters.
Study of a parametric voltage regulator.
Study of an inverting and non-inverting operational amplifier.
Linear computing circuits based on op amps.
Studying the circuit of active filters on the op-amp.
Studying the analog comparator and Schmitt trigger.
Studying multivibrators on op-amp.
Studying the typical logic elements.
Studying the operation of the JK-, RS-trigger and digital counter in integrated design.
Determination of parameters and general characteristics of a single-phase transformer.
Studying and trial run of a three-phase asynchronous motor with a squirrel-cage rotor.
Studying an asynchronous three-phase electric motor with a squirrel-cage rotor: at rated and at reduced voltage.
Studying a DC motor with independent excitation. Methods to start and control the rotation speed of the machine. Studying the natural characteristics.
Studying a DC motor with independent excitation. Studying the artificial characteristics.
Study of a DC motor with serial excitation. Ways to start and control the speed of rotation of the machine.
Study of a DC motor with serial excitation. Study of the artificial mechanical characteristics of a DC motor with series excitation.
Determination of the parameters and general characteristics of a DC generator with independent excitation.
Determination of the parameters and general characteristics of the DC Generator with Series Excitation.

Technical specifications

Power supply	3~380/220 V, 50Hz
Consumed power, kW, not more than	0,4
Module 1 overall dimensions, not more than
width, mm	1310
height, mm	1460
depth, mm	600
Weight of Module 1, kg, not more than	40
Module overall dimensions 2, not more than
width, mm	605
height, mm	1460
depth, mm	600
Weight of Module 2, kg, not more than	40

Scope of delivery

training laboratory equipment – 1 pc.;
set of jumpers – 1 set.;
USB-cable – 1 pc.;
connection cable – 1 pc.;
passport – 1 pc.;
supplementary materials in electronic format – 1 pc.

Additional equipment (specified when ordering)

Recommended additional equipment:

PC or laptop