Calpeda CS Submersible motors
Construction
The Calpeda 4", 6", 8" and 10" submersible motors are built using advanced technology and components of superior qua-lity that they ensure good mechanical strength and excellent electrical reliability.
The 4" motors have a special food grade dielectric fluid that gives a better lubricant effect, increasing the life of all moving parts and the copper wires.
The 6", 8" e 10" motors are in a water bath with the wire being coated with polyvinyl chloride.
All the Calpeda motors can be rewound and they are NEMA STANDARD.
Operating conditions
| Motor | 4" | 6" | 8" | 10" |
| Max. Liquid temperature | 30oC | 25oC | 25oC | 25oC |
| Max. starts per hour | 20 | 15 | 15 | 10 |
| Cooling: minimum flow velocity | 8 cm/s | 16 cm/s | 20 cm/s | 20 cm/s |
Continuous duty.
Operation data
2-pole induction motor, 50 Hz (n = 2900 1/min).
Sized for connection to the pumps according to NEMA Standards.
Standard voltages:
- single-phase 230 V - up to 2,2 kW for 4" motors. - three-phase 230 V; 400 V for 4" motors.
- three-phase 400 V; 400/690 V for 6-8-10" motors.
Voltage tolerance : +6% / -10%.
Recommended type of starting for powers from 7.5 kW: star/delta, soft start, impedance starting, autotransformer. Insulation class F for motors, PVC coated wire for 6-8-10" motors.
Protection IP 68.