School Education Supply

HOPKINSON’S TEST

HOPKINSON’S TEST

HOPKINSON’S TEST Manufacturers & Exporters, HOPKINSON’S TEST Supply for Tenders from India

HOPKINSON’S TEST

Product Code : EEL0020

Description: Objective: To conduct Hopkinson’s test on the given pair of identical dc machines and obtains item performance characteristics Preview: Swinburne’s test on a dc machine is a non-loading test. The machine performance can be computed from the data obtained from this test without actually loading it. In certain situations a dc machine has to be tested by actually loading it particularly for a heat-run test where the machine is fully loaded for a long period to determine its steady state temperature rise. Such a test may not be feasible for machines of even moderate size and such load test even where feasible is highly wasteful of energy for the heat-run test. In a manufacturing concern a number of identical machines may be on production line. Two such machines can be put on a test and coupled mechanically. These machines can then be tested by the Hopkinson’s test where these two machines are connected in parallel across the supply. By adjusting their excitations both of them can be simultaneously loaded (to any extent) where one machine (motoring) feeds mechanical power to the other machine (generating), while the generating machine feeds electrical power to the motoring machine. The only power drawn from the mains is the losses of both the machines. Load test and heat-run test could thus be conducted with very little energy consumption while the machines carry full load current at rated voltage. 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. 2HP Shunt machines mechanically coupled both are identical 220V 2HP 1500rpm. 2. 3-4 point DC Starter for the above 3. Suitable Loading rheostats 4. Digital tachometer 5. Suitable double tube rheostat 6. Suitable single tube rheostat 7. Suitable digital Voltmeters DC 8. Suitable digital ammeters DC. 9. Suitable DC source –Rectifier unit

Science Lab Products
Laboratory Equipments Search Tag's:
Microprocessor Uv-vis Spectrophotometer (double Beam), Cement Bending And Tensile Tester, Lab Equipments and Instruments Suppliers Ukraine, Room Thermometer, Lab Equipments and Instruments Suppliers Laos, Lab Equipments and Instruments Suppliers Saint Lucia, Automatic Tissue Processor, Double Beam UV-VIS Spectrophotometer, Humidity Chamber, Plastic Limit Test, Semiconductors Training Kit Equipment Suppliers India, Lab Equipments and Instruments Suppliers Maldives, Unconfined Compression Test Apparatus (Spring Type Autographic), deal Resperation Pump : (v.r.v.s.), Lab Equipments and Instruments Suppliers Ethiopia, Lab Equipments and Instruments Suppliers Czechia, Mixer with Heating Jacket, Lab Equipments and Instruments Suppliers Togo, Microprocessor Water & Soil Analysis Kit, Centrifuge Extractor (Motorised), Vicat Method, Coupling Mechanism Lab Kit Suppliers India, Shrinkage Limit Set, Mechatronics Technical Training Lab Equipment Suppliers India, Concrete Compression Tester, Calorimeters, OPTO Electronics Kit Equipment Suppliers India, Uniaxial Testing Apparatus, Speedy Moisture Meter (D2 Large), Lab Equipments and Instruments Suppliers Dominica, Heating Mantle, Lab Equipments and Instruments Suppliers Ivory Coast, Binder Extractor (Hand Operated), Lab Equipments and Instruments Suppliers South Sudan, Lab Equipments and Instruments Suppliers Slovakia, Lab Equipments and Instruments Suppliers Burundi, Power Electronics Kit Equipment Suppliers India, Animal Head Holders (universal, Flexibility, Digital UV-VIS Spectrophotometer, Lab Equipments and Instruments Suppliers Antigua Barbuda, Conductivty & Temprature Meter, Klystron Tube, Density Bottle (GAY-LUSSAC Type), Lab Equipments and Instruments Suppliers Moldova, Muscle Grip, MIC Trainer, Power Electronics Lab Kit Suppliers India, Linear Shrinkage Mould, First Aid Kit India,