ET311 · Three-Phase Systems

Experimental Platform for Three-Phase Systems Technology

A course package for the ET platform: real star and delta circuits with resistive and capacitive loads, powered by an adjustable three-phase supply at safety extra-low voltage, with guided multimedia courseware for the study of three-phase networks.

Experiments

Terminology and applications of three-phase systems
Measurement of phase and line voltages and currents in three-phase networks
Experimental verification of the laws relating phase and line voltages
Resistive and capacitive loads in star and delta connection
Phase shift between phase voltages - phasor representation
Compensating currents in the neutral conductor and the effect of a broken neutral
Current and voltage measurements for balanced and unbalanced loads
Power measurement on a three-phase load

Description

The platform teaches the fundamentals of three-phase networks through guided, hands-on experiments. The experiment card carries one circuit in star (Y) connection and one in delta (Δ) connection, with built-in resistive and capacitive loads that can be switched between balanced and unbalanced configurations. The adjustable three-phase supply comes from the ET300 base system's power outputs - at safety extra-low voltage, so students work on live three-phase circuits without hazard. Accessible measuring points expose the phase and line voltages and currents, which are acquired and displayed by the base system's virtual instruments, including phasor representation of the measured quantities.

Courseware

The interactive multimedia course combines theory with guided experiments: phase–line voltage relationships, phase shift, compensating currents in the neutral conductor, the consequences of a neutral break, and power calculation for symmetrical and asymmetrical loads. Student answers are evaluated automatically, and the full course - at least 4 hours of directed instruction - is available with Romanian-language support.

Scope of Delivery

Three-phase experiment card - one star (Y) and one delta (Δ) circuit with resistive and capacitive loads
Storage case
Multimedia course software with course browser
Connection cables

Specifications

Experiment card 1 star (Y) + 1 delta (Δ) circuit with resistive and capacitive loads

Load configurations switchable balanced / unbalanced

Measuring points phase voltages, line voltages, phase currents, line currents

Supply adjustable three-phase from base system, 0…150 Hz, up to 14 V_rms, safety extra-low voltage

Measurement via base system virtual instruments - oscilloscope, meters, power measurement, phasor display

Course duration min. 4 hours of guided instruction, with self-assessment

Base system requires ET300 (interface + experimenter) - not included