TC3 5-step auto-transformer speed-controllers Three-phase motors only
Features
The TC3 range of auto-transformer
speed-controllers are of a 5-step design
and vary the speed from 100% down to
approximately 30% of full speed.
Auto-transformers vary the voltage to the
motor to vary its speed. The method is
very efficient, as power consumption is
reduced by as much as 95% and does
not generate noise.
When used to control a number of fans
the total full-load amps of all the
connected fans must not exceed 85% of
the maximum rating of the controller.
The fans should be identical.
The motors must be designed for speed
control by voltage reduction.
Technical Data
| Model Number |
Maximum Amps |
Dimensions, mm |
Approx. wt. kg |
| TC33T |
3.0 |
310W × 330H × 180D |
15 |
| TC35T |
5.0 |
310W × 330H × 180D |
16 |
| TC310T |
10.0 |
420W × 420H × 220D |
23 |
| Enclosure rating - IP00 |
All TC3 units are surface-mounted and incorporate an off–5 step rotary switch, power and trip indicators, and reset switch. They are all manually controlled.
If higher ratings are required contact our sales office for advice.
Selection Table
The TC3 units can only be used with motors specifically designed for speed control via
voltage control. Ensure the motor amperage does not exceed 85% of the controller
rating.
Wiring Diagram
No dimension data available.
