Selection process retrofitting to existing equipment:Retrofitting a motor mounted VFD

Retrofitting a motor mounted VFD

If the pump and motor are not in a hazardous area and the saving of life cycle costs and/or other hydraulic benefits supports the installation of a VFD, in some cases the use of a motor-mounted frequency converter may be the cheapest and easiest way to equip an already installed pump with this technology .

For motor sizes from 1.1 up to 22 kW (1.5-30 hp) motor-mounted VFDs are available which can be mounted on standard three phase AC-Motors without any machining on the motor casing.

They are cooled by the motor fan and are enclosed to IP54/ NEMA 12 and directly wired to the motor terminal box. An example is shown in Figure 10.3.

VARIABLE SPEED PUMPING-0775

Related posts:

Selection process retrofitting to existing equipment:Motor suitability and de-rating
Applied Pneumatics:Automation and robotics
Particle degradation:Test rigs and data sources
Pipeline scaling parameters:Stepped pipelines
HYDRAULIC FLUIDS:Density and Specific Gravity
Control components in a hydraulic system:Pressure and temperature switches.
LINES, FITTINGS, AND SEALS:Hose Connection Side of Hose Fittings.
Shuttle and fast exhaust valves.
Fundamental Principles:Fundamental Principles
BASICCONCEPTS OF THE RMODYNAMICS:THE MANOMETER
POWER AND REFRIGER A TION CYCLES:AN OVERVIEW OF RECIPROCATING ENGINES
SUMMARY OF POWER AND REFRIGER A TION CYCLES
GAS MIXTURES AND PSYCHROMETRICS:SPECIFIC AND RELATIVE HUMIDITY OF AIR
RADIATION HEAT TRANSFER:VIEW FACTOR RELATIONS
HEAT EXCHANGERS:THE EFFECTIVENESS–NTU METHOD

Leave a comment

Your email address will not be published.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