Islamic University of Gaza Faculty of Engineering Electrical Engineering department Electric Machine Lab Eng. Mohammed S. Jouda Eng. Amani S. abu reyala Experiment 1 Introduction to Lab-volt virtual laboratory (LVVL) OBJECTIVE: To be familiar with the LVVL simulation. To be familiar with various subject in LVVL program. Overview of the Lab-Volt virtual laboratory and Equipment: The lab-volt virtual laboratory (LVVL) is a three-dimensional classroom laboratory displayed on a computer screen. Various subject such as hydraulics, pneumatics, electromechanically systems , and digital telecommunication can be studied using this virtual equipment. The virtual equipment sets form complete training systems which are faithful three- dimensional reproduction of actual lab-volt training systems. They have the same physical appearance and behave in the same way as the actual training systems. Figure 1 shows an example of the virtual classroom laboratory. Figure 1: Virtual classroom laboratory with equipment for studying electrical system.
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Islamic University of Gaza
Faculty of Engineering Electrical Engineering department
Electric Machine Lab
Eng. Mohammed S. Jouda
Eng. Amani S. abu reyala
Experiment 1
Introduction to Lab-volt virtual laboratory (LVVL)
OBJECTIVE:
To be familiar with the LVVL simulation.
To be familiar with various subject in LVVL program.
Overview of the Lab-Volt virtual laboratory and Equipment:
The lab-volt virtual laboratory (LVVL) is a three-dimensional classroom laboratory
displayed on a computer screen. Various subject such as hydraulics, pneumatics,
electromechanically systems , and digital telecommunication can be studied using this virtual
equipment.
The virtual equipment sets form complete training systems which are faithful three-
dimensional reproduction of actual lab-volt training systems. They have the same physical
appearance and behave in the same way as the actual training systems. Figure 1 shows an
example of the virtual classroom laboratory.
Figure 1: Virtual classroom laboratory with equipment for studying electrical system.
This Experiment is designed to get you familiar with the various computer-based
instruments (Metering- window, Oscilloscope, Phasor Analyzer, etc) included in the actual
and virtual Lab-Volt Electromechanical Training Systems. It is divided into some sections:
I. Familiarization with the Metering Window and the Data Table:
This familiarization exercise consists of procedure that shows how to use the Lab-Volt
computer-based Metering window and Data Table. The exercise can be performed using either
the actual or virtual Lab-Volt Electromechanical System (EMS).
PROCEDURE:
1. Ensure that the power supply (unit 8821-25) is switched off.
2. Connect the LOW POWER INPUT of the Data Acquisition Interface (DAI) module
to the 24 V - AC output of the Power Supply.
3. Connect the equipment as shown in Figure I-1 & Figure I-2 .
Figure I-1: Simple resistive AC circuit.
Figure I-2: Connect the Simple resistive AC circuit by LVVL program.
4. open the Metering window, set meter E1 as an AC voltmeter and meter I1 as an AC
ammeter as shown in Figure I-3.
Figure I-3: Metering window.
5. Open the Data Table window by choosing the corresponding command in the Tools
menu or by clicking the corresponding button in the Tools bar.
6. For each voltage step, record in the Data Table window the values displayed by the
meters in the Metering window. Observe that a new row in the Data Table window is
filled up with data whenever a record data command is performed.
Set the Power Supply voltage control knob to the 0 position as shown in Figure I-4.
Figure I-4: Data Table window.
7. In the Graph window, plot a graph between the voltage and the current delivered to
resistor R1, To do so, select voltage E1 as the y-axis and I1 as the x-axis. and Colors
help topics to obtain additional information about the Graph window, as shown in
Figure I-5.
Figure I-5: Graph window.
II. Familiarization with the Oscilloscope:
This familiarization exercise consists of procedure that shows how to use the Lab-Volt computer-
based Oscilloscope.
PROCEDURE:
1. Ensure that the power supply (unit 8821-25) is switched off.
2. Connect the LOW POWER INPUT of the Data Acquisition Interface (DAI) module to
the 24 V - AC output of the Power Supply.
3. Connect the equipment as shown in Figure II-1 & Figure II-2 .
Figure II-1: Simple resistive-inductive circuit.
Figure II-2: Connect Simple resistive-inductive circuit by LVVL program.
4. Start the Oscilloscope by choosing the corresponding command in the Instruments
menu or by clicking the corresponding button in the EMS Instruments toolbar.
5. Make the following settings on the Oscilloscope: