Two-Wattmeter Method Trainer
Bench-top trainer for three-phase power measurement by the two-wattmeter method with switchable resistive, inductive and capacitive loads.
Input supply
3-phase, 415 V AC (R, Y, B, N)
Voltmeters
V1, V2 — analog, 0–500 V
Ammeters
IR, IY, IB — analog, 0–5 A
Wattmeters
W1, W2 — analog panel wattmeters
Formal GST quotation
Supply & installation
Repair & service support
Overview
The Two-Wattmeter Method Trainer from RS Electronics is a complete bench-top setup for studying three-phase power measurement. Line voltages, line currents and the two wattmeter readings are displayed on panel meters while students switch between resistive, inductive and capacitive three-phase loads to observe how power factor affects each wattmeter reading.
Technical specifications
| Input supply | 3-phase, 415 V AC (R, Y, B, N) |
|---|---|
| Voltmeters | V1, V2 — analog, 0–500 V |
| Ammeters | IR, IY, IB — analog, 0–5 A |
| Wattmeters | W1, W2 — analog panel wattmeters |
| 3-phase resistive load | 250 W per step, 4 switched steps per phase |
| 3-phase inductive load | Fixed |
| 3-phase capacitive load | 15 µF per step, 4 switched steps per phase |
| Protection | 4-pole MCB with R/Y/B phase indicator lamps |
| Variac connection | 3-phase variac input and output terminals |
Specifications may vary by model and batch. Please confirm with our team before ordering.
Features & benefits
- Printed single-line circuit diagram on the front panel
- Individual phase-wise load switching (S1–S4) for resistive and capacitive loads
- Phase indication lamps and MCB protection
- Sturdy powder-coated cabinet with panel-mounted meters
Experiments supported
- Measurement of three-phase power using two wattmeters
- Determination of power factor from wattmeter readings
- Study of wattmeter readings under resistive, inductive and capacitive loads
- Verification of line and phase relationships in a balanced load
Applications & usage
- Engineering college and university laboratories
- Polytechnic and diploma institute labs
- Skill development and vocational training centres
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