Ward Leonard Method of DC Machine Trainer Manufacturer,Supplier and Exporter in India
Product Code : SCL-EELE-12947
Indian Lab Suppliers supplies the Ward Leonard Method of DC Machine Trainer (Product ID: 12947) as part of its electronics engineering lab equipment range. It demonstrates Ward Leonard speed control of a separately excited DC shunt motor in both directions using a motor-generator set.
Quick Answer
A 1 HP, 415 V, 1440 rpm squirrel-cage induction motor drives a 1 HP, 200 V DC shunt machine working as a generator; both sit on a mild steel channel base with a flexible coupling. The generator output feeds the armature of a separate 1/2 HP, 200 V, 1500 rpm DC shunt motor, so varying the generator field varies the motor speed smoothly from standstill, and a reversing switch changes the direction. Armature and field terminals of the machines are brought out to terminal boxes, and one moving-coil voltmeter and two moving-coil ammeters are fitted.
Key Specifications
| Parameter | Detail |
|---|---|
| Input supply | 415 V ±10%, 50 Hz, three phase |
| Prime mover | 3-phase squirrel-cage induction motor, 1 HP, 415 V, 1440 rpm (no load), class B |
| DC generator | DC shunt machine, 1 HP, 200 V, 1500 rpm (no load), class B |
| Controlled motor | DC shunt motor, 1/2 HP, 200 V, 1500 rpm (no load), class B |
| Meters | 1 MC voltmeter, 2 MC ammeters |
| Direction control | Reversing switch |
| Panel dimensions | W 450 × D 600 × H 450 mm |
| Weight | Control panel 19.5 kg; motor set 60 kg |
| Optional item | Three-phase variac |
Where This Is Used
Used in electrical machines laboratories for DC drive and speed-control practicals. It combines three-phase mains with rotating machines, so the set must be earthed, coupling guards kept in place and runs supervised. Other DC machine tests: Swinburne's Test of DC Machine (Product ID: 12961) and Hopkinson's Test of DC Machine (Product ID: 12962). Browse the full Electronics Engineering Lab Equipment range or related Electricity and Magnetism products.
Frequently Asked Questions
How is the speed controlled?
By changing the field of the DC generator, which sets the armature voltage of the DC motor.
Can the motor run in reverse?
Yes, a reversing switch is provided.
What drives the DC generator?
A 1 HP three-phase squirrel-cage induction motor.
Related Categories
Electronics Engineering Lab Equipment · Electricity and Magnetism · Engineering Lab Equipment
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