MR447E Stand For Laboratory Work On The Course"Electrical Machines" Didactic Equipment Electrical Lab Equipment
Combine the two workbench function together, and put in on workbench Description The laboratory bench is designed for laboratory works to study electrical machines in universities and specialized schools. The construction of the bench consists of a case with the following equipment installed: electrical equipment, electronic circuit boards, front panel and integrated desktop tabletop. The following equipment is placed inside the case: rectifier board; load resistors module; three-phase laboratory transformer; three-phase transformer investigated. Electrical schemes of the objects investigated are shown on the front panel. All the schemes shown are divided into groups in accordance with the theme of laboratory work conducted. On the front panel installed: commutation sockets, analogue panel meters, commutation equipment and controllers, which allow to change options of the elements during conduction of laboratory work. The controllers are: three-phase laboratory autotransformer (LAT) switcher, which allows to change voltage withing 0..20V with a 2V pitch and 130..250V with a 30V pitch; single-phase laboratory autotransformers switchers (LATs), which allow to change voltage within 50..110V with a 10V pitch; load resistors module switchers, witch allow to connect resistors of different resistance. The following electrical machines are installed on the panel of the bench: asynchronous electric motor with a squirrel-cage rotor - 1 pc.; separately excited DC motors - 2 pc.; tachogenerator with permanent magnets excitation; contactless selsyns. To carry out laboratory work it is necessary to assemble the scheme of the object investigated with a help of unified jumpers, which allow to assemble schemes without loss of their clarity. Measurements are carried out with analogue panel meters. There are 10 panel meters installed on the front panel of the bench, among them are: AC ammeter (measurement limit 0,2/0,5/1 A, accuracy class 2,5) 1 pc.; DC ammeter (measurement limit 1A, accuracy class 2,5) 2 pcs.; DC ammeter (measurement limit 0,2A, accuracy class 2,5) 1 pc.; AC voltmeter (measurement limit 100V, accuracy class 1) 1 pc.; DC voltmeter (measurement limit 200V, accuracy class 1) 1 pc.; AC wattmeter (measurement limit 40/450W, accuracy class 2,5) 1 pc.; RPM meter (measurement limit 5000 rpm, accuracy class 4) 1 pc. The laboratory bench is supplied with the following methodical support: methodical and technical documentation set for teaching staff. The educational laboratory stand is designed for studying design and principle of operation of three-phase transformer. Constructively the stand consists of a body with electrical equipment, printed circuit boards, investigated transformers, a static load module, a measurement system, a frontal panel and an integrated tabletop. The measurement system is designed to display the investigated parameters (current, voltage, power). The frontal panel of the stand contains: static load controller; start-up and adjusting controllers; measurement system indicators; switching jacks; USB-connector for PC. Software and methodical documentation supplemented to the stand: methodical and technical documentation set intended for academic staff; software for working with the stand.
