SPECIFICATIONS
The “AEL-TPTT” application includes the following elements:
• N-VPS01. AC 3PH Variable Power Supply.
Removable ON/OFF key.
Supply voltage: 3 x 400 VAC+N+GND.
Emergency stop push button.
Three-phase power supply cable with IP44 plug 3PN+E 32 A 400 V.
4 pole differential circuit breaker, 25 A, 30 mA AC 6 KA.
Adjustable three-phase thermal protection.
Fuses: 3 x 6 A.
Motorized variable autotransformer:
Nominal power: 3000 VA.
Input voltage: 400 VAC.
Fixed output voltage: 3 x 400 VAC+N.
Variable output voltage:
0 – 450 VAC (3PH+N).
0 – 240 VDC.
Nominal current: 2 A.
3-position switch with automatic return:
Position I: voltage reduction.
Position 0: constant voltage.
Position II: voltage increase.
DC ammeter: 0 – 5 A.
AC ammeter: 0 – 5 A.
DC voltmeter: 0 – 300 V.
AC voltmeter: 0 – 500 V.
Autotransformer.
Nominal power: 3000 VA.
• N-MED09. AC Ammeter (0 – 2.5 A) (2 units).
Measurement range: 0 – 2.5 A.
Terminals:
Measurement terminals.
GND terminal.
• N-MED22. AC Voltmeter (0 – 400 V).
Measurement range: 0 – 400 VAC.
Terminals:
Measurement terminals.
GND terminal.
• N-MED34. Three-phase Balanced Wattmeter Module (0 – 1.5 kW) (2 units).
Nominal voltage: 0 – 1.5 kW.
Terminals:
Measurement terminals.
GND terminal.
• N-TRANS09. Three-phase Isolating Transformer, 400/400 VAC, 1 kVA, Module.
Nominal power: 1 kVA.
Primary winding voltage: 3 x 400 VAC Δ.
Secondary winding voltage: 3 x 400 VAC Y.
Adjustable overcurrent protection: 1.6 – 2.5 A.
GND terminal.
• N-REVT/1K. 1kW Three-Phase Resistors Module.
Parallel, series, star and delta connection.
Resistance: 3 x 750 Ohm.
Current: 3 x 2 A
• N-CAR19T/3C. 3 x 300 VAr Three-Phase Configurable Capacitors Module.
Nominal voltage: 400 VAC.
For parallel, series, star and delta circuits.
Capacity: 3 x 5/10/20/30 µF.
• N-INDT/3C. 3 x 300 VAr Three-Phase Configurable Inductances Module.
Configurable star and delta connection.
Three banks with three three-phase capacitors of 2 µF.
Nominal voltage: 400 VAC.
Nominal power: 3 x (3 x 300) VAr.
• N-PSM. Power Switch Module.
The voltage can be switched on and off manually or automatically.
Nominal voltage: 230 VAC+N+GND.
Frequency: 50/60 Hz.
Control voltage: 24 VDC.
Nominal operating current: 15 A.
Functions: two pushbutton switches and remote control for switch-off relay.
Contacts:
Three normally open contacts.
Two auxiliary normally open contacts.
• MED65. Digital Multimeter (2 units).
Digital multimeter of about 3 ½ digits, with double-jack ending cables of about 4 mm to facilitate
interconnections.
With this digital multimeter we will be able to measure:
Voltage.
Current.
Resistance.
Capacitors capacity.
Temperature.
• N-MED39. 3-Phase Balanced Varmeter 440 V.
Three-phase balanced valve.
440 VAC.
Range: 0 – 300 VAr.
Scale: 90º.
Accuracy: 1.5%.
50 or 60 Hz.
Additional recommended elements (Not included):
• N-TRANS09. Three- phase Isolating Transformer, 400/400 VAC, 1 kVA, Module.
Nominal power: 1 kVA.
Primary winding voltage: 3 x 400 VAC Δ.
Secondary winding voltage: 3 x 400 VAC Y.
Adjustable overcurrent protection: 1.6 – 2.5 A.
GND terminal.
• EM-SCADA. Control and Data Acquisition System Software for Electrical Machines.
Power supply: 230 VAC.
Input Signals:
Current signal (x2).
RMS current signal (x2).
Voltage signal (x2).
RMS voltage signal (x2).
Torque and speed signals.
• All necessary cables to realize the practical exercises are included.
AEL-TPTT | THREE-PHASE TRANSFORMER APPLICATION
The Three-Phase Transformer Application, “AEL-TPTT”, has been designed to study the basic operating principles of three-phase transformers as well as to study the most relevant tests carried out on these electrical machines. There are two such tests: the no-load test and the short-circuit test. By means of these tests the user will be able to determine the representative electrical parameters of three-phase transformers, that is, their equivalent circuit.
This application includes a series of modules through which the user will be able to study in depth the three-phase transformer, obtain its equivalent circuit, calculate the losses of the machine, as well as its efficiency. In addition, the user will study the behavior of transformers when connecting resistive, inductive and capacitive loads.
The “AEL-TPTT” application includes all the necessary modules to perform the calculations described above, such as the transformer, ammeters, voltmeters, variable power supply and resistive, inductive and capacitive loads.
Optionally, another transformer can be coupled to this application to study the parallel connection of transformers.
Finally, it is recommended to acquire with this application the Electrical Machines Control and Acquisition System, EM-SCADA. This system is designed to analyze and monitor all voltages and currents of electrical machines.
