Three Phase Circuit Trainer

Product Overview

The Three Phase Circuits Trainer familiarizes students with single-phase and three-phase power systems. The system first introduces the student to the fundamentals of three-phase power systems, such as the wye (star) and delta configurations, phase and line voltages, phase and line currents, phase balance, etc. Students then examine how to measure power in three-phase circuits, as well as how to determine the power factor. Finally, students explore the phase sequence and learn to determine the phase sequence of a three-phase power system.

The system consists of a series of modular slot-in panel modules housed in a compact epoxy coated casing. Each module represents one or more electrical or electronic components or a block diagram of a complex circuit. All functional parts of the components are mounted inside the modules with circuit symbols or mimic diagrams screen printed on the front PCB panel and terminated at 4mm safety sockets for student experimental practice.

All modular slot-in panel modules are interconnected together by using 19mm short circuit shunt and or 4mm stackable safety test lead sets to form the desired control circuits.

EXPERIMENT COVERAGE:

• Analyze three-phase circuits and learn to solve them
• Discover the difference between line and phase voltages and currents
• Calculate the active power dissipated in each phase of a three-phase circuit and the total active power dissipated in a circuit
• Learn about phase sequence and wye and delta circuit configuration
• Calculate the active, reactive, and apparent power in balanced, wye- or delta-connected, three-phase circuits
• Analyze the phase sequence of a three-phase circuit using an oscilloscope

EXPERIMENTS LISTS

1. LEARNING OUTCOMES (ELECTRICAL CIRCUITS)

1.1 Three Phase Circuits

• 1.1.1 Phase and line voltage measurements in the Power Supply
• 1.1.2 Voltage, current, and power measurements in a wye-connected circuit
• 1.1.3 Voltage, current, and power measurements in a delta-connected circuit

1.2 Three Phase Power Measurement

• 1.2.1 Voltage, current, and power measurements in a wye-connected circuit
• 1.2.2 Voltage, current, and power measurements in a delta-connected circuit

1.3 Phase Sequence

• 1.3.1 Determining the Phase Sequence of a Three-Phase Power System Using an Oscilloscope
• 1.3.2 Connecting an Oscilloscope to a Three-Phase Power System
• 1.3.3 Determining the Phase Sequence of the Three-Phase AC Power Source

1.4 Three Phase RLC Load Balance & Un-Balance

1.4.1 Balanced Three Phase Loads

• 1.4.1.1 Star connection with balance resistive load
• 1.4.1.2 Delta connection with balance resistive load

1.4.2 Unbalanced Three Phase Loads

• 1.4.2.1 Star connection with unbalance three-wire resistive load
• 1.4.2.2 Star connection with unbalance four-wire resistive load
• 1.4.2.3 Delta connection with unbalance resistive load

1.4.3 RL Series Circuit

• 1.4.3.1 Star-Connected with series R-L Load
• 1.4.3.2 Delta-Connected with series R-L Load

1.4.4 RC Series Circuit

• 1.4.4.1 Star-Connected with series R-C Load
• 1.4.4.2 Delta-Connected with series R-C Load

1.4.5 RLC Series Circuit

• 1.4.5.1 Star-Connected with series R-L-C Load
• 1.4.5.2 Delta-Connected with series R-L-C Load

1.4.6 RLC Parallel Circuit

• 1.4.6.1 Star-Connected with parallel R-L-C Load
• 1.4.6.2 Delta-Connected with parallel R-L-C Load

Technical Specifications

UNIVERSAL AC/DC POWER SUPPLY

• Power Input Requirement: Three Phase 240V/415V, 50Hz
• Connection: 3P+N+PE output terminations using 4mm terminal socket
• Input fed with AC 5 pin plug 32A AC Plug and Socket
• Pilot lamps provided to indicate all live supplies
• With On/Off Switch
• Fuse Protection
• Fixed Single Phase AC Power Supply: 3 x 240V AC; 8A AC (R-N, B-N, Y-N)
• Fixed Three Phase AC Power Supply: 3 x 450V AC; 8A AC (R-Y, Y-B, B-R)

Adjustable Single Phase & Three Phase AC/DC Power Supply (Simultaneously):

• 3 x 0 ~ 450VAC; 8A AC (Phase To Phase)
• 3 x 0 ~ 240VAC; 8A AC (Phase To Neutral)
• 1 x 0 ~ 450VDC; 8A DC
• Three Phase 5 Pin AC Plug 32A with 1.5m length 5 core power cable
• Instruction Manual

RESISTIVE LOAD UNIT

• Single & Three phase Resistive Load (7 steps variable per phase)
• Max Power: 3 x 100 Watt
• Voltage: 240/415 Volt
• Frequency: 50Hz
• Protection: Fuse

INDUCTIVE LOAD UNIT

• Single & Three phase Inductive Load (7 steps variable per phase)
• Max Power: 3 x 100 VAR
• Voltage: 240/415 Volt
• Frequency: 50Hz
• Protection: Fuse

CAPACITIVE LOAD UNIT

• Single & Three phase Capacitive Load (7 steps variable per phase)
• Max Power: 3 x 100 VAR
• Voltage: 240/415 Volt
• Frequency: 50Hz
• Protection: Fuse

AC VOLTMETER (3 UNITS)

• Measurement range: AC 0 ~ 600V
• Display: 3 digits 14.2 mm LED
• Accuracy: 0.2% 1 digit
• Resolution: 1V
• Input impedance: 1M
• Power source: 220VAC, 50/60 Hz
• Unit Type: Panel H1
• Terminals: 4mm Safety Sockets

AC AMMETER (4 UNITS)

• Measurement range: AC 0 ~ 5A
• Display: 3 digits 14.2 mm LED
• Accuracy: 0.3% 1 digit
• Resolution: 0.01A
• Input impedance: <0.1
• Power source: 220VAC, 50/60 Hz
• Unit Type: Panel H1
• Terminals: 4mm Safety Sockets

PHASE SEQUENCE METER

• Display Type: Analog
• Input Voltage: Three Phase 150V ~ 500VAC
• Accuracy: 0.5%
• Terminals: 4mm Safety Socket
• Unit Type: Panel H1

THREE PHASE POWER QUALITY METER (2 UNITS)

• Display Type: HD LCD Display
• Real-Time Measurement:
• Phase voltage, Line voltage, Current
• Active, Reactive, Apparent power
• Power factor, Frequency

Energy And Demand:

• Four quadrant energy (Import, Export, Total, Net)

Power Quality Analysis:

• Voltage & Current unbalance
• THD, harmonic distortion
• Crest factor, K factor

Communication:

• Ethernet, RS485, MODBUS RTU

Trend Logging:

• Voltage, Current, Power, Energy, Frequency

Settable Logging Interval:

• 1 min to 60 min

Software Accessibility:

• 4 Tariffs (TOU)
• Accuracy: 0.5%
• Protection: Fuse
• Power Supply: 240VAC
• Terminals: 4mm Safety Socket

POWER MANAGEMENT SOFTWARE

• PC management software with web interface
• True-RMS measurement
• ANSI & IEC 0.2 accuracy class
• Power quality analysis
• 4 quadrant energy
• Data logging
• Harmonics measurement (2nd to 49th)
• Phase waveform & vector display
• TOU tariffs (4 Tariffs, 6 Seasons, 6 Schedules)
• Ethernet interface

CONNECTING SAFETY TEST LEAD SET

• Safety leads in 5 different colors and lengths
• 15A current rating

Lengths:

• 25cm x 15 units
• 50cm x 15 units
• 100cm x 10 units
• 150cm x 10 units
• 19mm Bridging Plug Set x 14 units

EXPERIMENT PANEL FRAME

• DIN Standard A4 with two shelves
• T-shaped side frame
• Horizontal U-Bar (Top & Bottom)
• Horizontal H-Bar (Center)
• Material: 2mm steel epoxy coated

Dimensions:

• Length: 1450mm
• Width: 20mm
• Height: 300mm

Includes Test Lead Holder:

• Left & Right sides
• 7 slots for 4mm leads

EXPERIMENTAL TABLE (OPTIONAL)

• Workbench Table Top
• Material: Compressed Board (25mm)

Dimensions:

• Length: 1500mm
• Width: 800mm
• Height: 800mm

Support Structure:

• 2 x 2 Hollow Steel (Epoxy Coated)
• Thickness: 2mm
• Lower Cabinet with 3 drawers (center lock)
• Castor wheels (front with lock)