Power Measurement By 3 Voltmeter, 3 Ammeter Method Manufacturer,Supplier and Exporter in India
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Product Code : SCL-EELE-12938
Indian Lab Suppliers supplies the Power Measurement By 3 Voltmeter, 3 Ammeter Method (Product ID: 12938) as part of its electronics engineering lab equipment range. It shows how power and power factor of a single-phase load can be found with voltmeters or ammeters alone, without a wattmeter.
Quick Answer
In the three-voltmeter method a known resistance is placed in series with the inductive load (the 300 mH, 5 A choke coil), and power follows from P = (V1² − V2² − V3²) / 2R. In the three-ammeter method the resistance is placed in parallel, and P = R(I1² − I2² − I3²) / 2. The panel has three 0-500 V and three 0-5 A digital meters, a 5 A MCB and test points, and works on 230 V ±10%, 50 Hz mains with a 230 V auxiliary supply. A 0-230 V, 5 A variac and a 5 A rheostat are optional; the rheostat’s resistance value should be confirmed at quotation. The circuit is at mains voltage, so connect it with the supply off.
Key Specifications
| Parameter | Detail |
|---|---|
| Methods | Three-voltmeter and three-ammeter power measurement |
| Load | Choke coil, 300 mH, 5 A |
| Voltmeters | 3 × digital, 0-500 V |
| Ammeters | 3 × digital, 0-5 A |
| Protection | 5 A MCB |
| Supply | 230 V ±10%, 50 Hz mains and auxiliary |
| Dimensions | W 450 × D 350 × H 600 mm |
| Optional | Single-phase variac 0-230 V, 5 A; rheostat 5 A |
| Documentation | Learning material CD |
Where This Is Used
Used in electrical measurement labs with the Two Wattmeter Method Trainer (Product ID: 12870) and the Study of Instrument Transformers (C.T. & P.T.) (Product ID: 12930). Browse the full Electronics Engineering Lab Equipment range or related Electricity and Magnetism products.
Frequently Asked Questions
Why use these methods?
They give power and power factor when no wattmeter is available.
What load is provided?
A 300 mH, 5 A choke coil.
What resistance is used?
A known resistance such as the optional 5 A rheostat, set to a measured value.
Related Categories
Electronics Engineering Lab Equipment · Electricity and Magnetism · Electronics Lab Equipment
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For pricing, bulk quantities or tender documentation on the Power Measurement By 3 Voltmeter, 3 Ammeter Method, reach our team via Contact Us or submit your requirement through our Tenders page.
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