Benefits, drawbacks and operational issues:Motordesign

Motordesign

Motors can be designed for different features of starting torque, starting current and slip.

Standard motors designed to IEC standards are designated NY, N, H and HY; while motors designed to NEMA carry letters A, B, C and D. Note that the specifications are not totally compatible, but are combined in Table

VARIABLE SPEED PUMPING-0779

For voltage source PWM inverter operation, design NY or A is the best suited, while design Nor 8 will normally give satisfactory service. For other motors consult the manufacturer.

Specially designed inverter fed motors are offered for a number of specific low power requirements, such as high speed operation, where the base speed may be increased from 3000 r/min to 4000 or 5000 r/min. However, special designs of inverter fed motors are more widely used for higher powers and will generally carry a special name and rating plate designating the permitted duty range.

Related posts:

Case studies:Benefits given by the use of environmental temperature control using reciprocating PD p...
Applications on pneumatic:Air bubble techniques
Compressed Air Transmission and Treatment:Activated carbon adsorption
Energy and Efficiency:Output energy available
Air flow rate evaluation:Volumetric flow rate
CONTROL VALVES:Globe Valves
System selection considerations:System economics and Material considerations
Review of pneumatic conveying systems:System types,Open systems and Positive pressure systems.
Pipeline scaling parameters:Vertical pipelines
Material property influences:Conveying capability correlations.
Conveying characteristics:The determination of conveying characteristics
Hydraulic fluids:Fire-resistant fluids
Converters:I-P converters and P-I converters.
Hydraulic and Pneumatic Accessories:Pneumatic Piping, Hoses and connections
ENTROPY:PROPERTY DIAGRAMS INVOLVING ENTROPY

Leave a comment

Your email address will not be published. Required fields are marked *