Sumpner’s Test of Two Single Phase Transformers is a very exclusive and important product designed for students to explain very first block of Electrical Engineering. With this trainer, students can learn about how losses occurs in the transformers, equivalent parameters, efficiency and heat run test which is very helpful to study the functioning of the single phase transformers. They can also get aware of the phenomenon of polarity in a very simple manner.

The product is represented in such an easy way that each test can be studied differently in proper sequence. Not much brainstorming is required to make the circuit’s connection. The varied scope of learning makes the subject completely understandable and interesting.

• Control panel with digital microcontroller based measuring devices with high accuracy and resolution
• Transformer winding consist of copper for long term service
• Inbuilt Single phase auto-transformer to get multiple readings
• Equipped with temperature measuring device to analysis transformer’s heat
• Front board consists of MS Material with power coating to avoid any rust.
• Separate auxiliary supply facility to enable digital measuring instruments
• Control Panel with round grills fitted on both sides for cooling purpose.
• Provided with suitable protection such as fuses, MCB, etc wherever requires
• Specially designed BS10 Terminals and patch cords for electrical safety
• Lamp indicator for single phase mains supply
• Earthing screw provided at the back side of the control set-up
• Diagrammatic representation for the ease of connections.
• Product provides with protection fuses, colored patch cords, single phase cords, learning manual having theory operating procedure with connecting diagram, FAQ, Glossary, etc

Mains Supply                                                       : Single Phase, 230VAC ±10%, 50Hz

Single Phase Transformer (2Nos)

• Rating                                                          : 1kVA
• Primary Voltage                                         : 0-125V – 0V – 125V ±10%, 50Hz
• Secondary Voltage                                    : 0-125V – 0V – 125V ±10%, 50Hz
• Rated Current                                             : 4A
• Winding                                                      : Copper
• Efficiency                                                    :  Above 85% (considering experimental losses)
• Type                                                             : E-I Core

Digital Meters Used

• Technology Used                                    : Microcontroller based
• AC Voltmeter                                           : 500V (2nos.)
• AC Ammeter                                            : 10A (2nos.)
• Wattmeter                                                : 1.5kW (2Nos.)

 Single Phase Autotransformer

• Primary Voltage                                       : 230V AC ±10%, 50Hz
• Secondary Voltage                                  : 0 – 270V AC ±10%
• Rating                                                        : 10A
• Type                                                             : Open Type

Protection Devices

• MCB (DP)                                                   : 10A
• Glass Fuse                                                  : 10A
• Grounding Nut                                            : Available at the rear side of the panel

• Study of Additive Polarity Test in a Single Phase Transformer
• Study of Subtractive Polarity Test in a Single Phase Transformer
• Study of Open Circuit Test and Short Circuit Test taking two single phase transformer and consequently calculate efficiency and voltage regulation of transformer with different loading configurations