NEMA Motors
Efficiency Knows No Limits
NEMA motors (National Electrical Manufacturers
Association) for the North American market distinguish themselves as a result
of their new design – and especially as a result of their efficiency. The motors
with copper die-cast rotor offer efficiencies that lie above the NEMA Premium
Standard and currently have the highest available in the market. Initially, the
new generation of NEMA motors will be available in framesizes 140 to 250 with
power ratings of between 1 and 20 HP (Horse Power).
Energy-saving
motors with efficiency classes EPAct and NEMA Premium comply with the US EPAct
legislation for minimum efficiencies. Our NEMA Premium efficiency class exceeds
the even higher efficiencies specified in the NEMA standards. The motors are
mechanically and electrically compliant with NEMA MG1. In addition to the minimum
efficiencies specified in the US, these motors also fulfill the minimum efficiency
requirements for Canada (CSA) and Mexico (NOM).
 NEMA
Motors – a
Brief Summary of Their Strengths
Copper die-cast rotors optimize the efficiency
Copper die-cast rotors reduce the power loss and slightly reduce the motor length.
This version reduces the motor lifecycle costs as a result of the lower energy
consumption.
Can be easily modified for high versatility
The mounting feet can be changed-over (aluminum frame) and they have 8- hole
mounting feet (gray cast iron frame). These features make it easier to modify
the motors – ensuring
a high degree of versatility. They also reduce the inventory costs – both
for the OEM as well as also for service and maintenance.
A design that fulfills each and every requirement
We have motors with light aluminum frames or with rugged gray cast iron frames
– the optimum motor for each and every application. Both of these versions are
available with EPAct efficiency or NEMA Premium efficiency. They are a precise
fit for each operating period.
NEMA Motors – Technical Data
| Voltage and
power range |
208 - 230/460V,
575V, 60Hz, 1- 20 HP (0.75-15kW) |
| Frame sizes and designs |
NEMA framesizes 140 to
250 |
| Pole number and frequencies |
2, 4 and 6-pole, 60-Hz |
| Ambient conditions |
Surface cooled (t.e.f.c.)
with degrees of protection IP 54/ IP 55 |
NEMA Motors – Typical Uses
NEMA motors are suitable in all types of industries, in sectors such as the automobile,
textile, printing, chemical branches as well as in cross-industry applications
– for example in conveyor technology. The HVAC sector (Heating, Ventilating & Air
Conditioning), which requires extremely light motors are typical applications
for our so-called General Purpose motors – either with gray cast iron or aluminum
frames.
Severe duty motors in a full gray cast iron design
are suitable for use in tough ambient conditions – for instance in the pulp and
paper industry. The Severe Duty SD100 IEEE 841 motor version even exceeds the
stringent IEEE 841 Standards applicable in the crude oil and chemical industries. |
Hide Images |
Print
zoom