Objective: To perform Sumpner?s test. Predetermination of performance characteristics and equivalent circuit of single-phase transformer.
Preview: In OC and SC tests a transformer is subjected to either core loss or copper loss and so these tests cannot as such be used for heat-run for heat-run-test. A heat-run test can be conducted on two identical transformers by connecting them back-to-back. Wherein, their secondaries are connected in phase opposition. So the secondaries will behave open-circuited when the primaries are excited, the current drawn from V1 source being 2I0 providing core losses (2P0) of the two transformers. A low-voltage variable source V2, is connected in the secondary circuit which causes circulating current in the secondaries with primaries acting as short circuit for this source (use superposition theorem). This circulating current can be adjusted to full-load value. The power injected by this source is 2PC, the full-load copper loss of both transformers, while the impedance seen by it is 2Zeq. Both the transformers in this test are thus subjected to full load core and copper losses by phantom loading, while drawing only core loss power from source V1 and only copper loss power from source V2. In some sense this test has similarity with the Hopkinson?s test on two identical dc machines.
Equipment Required: All the measuring instruments associated with each experiment are industrial grade. These instruments are housed in an elegant cabinet as a package. Range of instruments and accessories (standard format)
1. Transformer 1? 1KVA Capacity, Primary: 230V Secondary: 115V ? Two numbers
2. Suitable Variac
3. Suitable digital ammeters of different ratings AC
4. Suitable digital voltmeters of different ratings AC
5. Suitable digital wattmeter
SUMPNER?S TEST EXPERIMENT for Institutional & Laboratory Applications
SUMPNER?S TEST EXPERIMENT is designed for engineering colleges, technical universities, STEM laboratories, and TVET training centers. Interlabs manufactures export-quality engineering training systems for institutional procurement projects, technical education programs, laboratory modernization, and international supply requirements across Tanzania, Uganda, Ethiopia, and Rwanda.
Applications of SUMPNER?S TEST EXPERIMENT
This equipment is widely used for technical education, engineering practical training, industrial automation learning, and laboratory demonstrations. It supports practical learning environments, institutional laboratory setups, technical training programs, and advanced educational applications.
Suitable For
- Universities and educational institutions
- Research laboratories and training centers
- Government and institutional procurement projects
- African laboratory infrastructure programs
- Technical and vocational education facilities
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Interlabs supplies laboratory equipment and institutional training systems to buyers across Tanzania, Uganda, Ethiopia, and Rwanda with secure export packaging, documentation support, and international logistics assistance.