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Induction motor NM
three-phasesquirrel cagecast iron

Induction motor - NM - naffco - three-phase / squirrel cage / cast iron

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Characteristics

Type

induction, three-phase

Configuration

squirrel cage, cast iron

Protection class

IP23

Number of poles

4-pole, 2-pole

Applications

for pump

Other characteristics

low-voltage, NEMA, UL certified

Power

Max.: 500 ch
(500 hp)

Min.: 10 ch
(10 hp)

Rotational speed

Max.: 2,985 rpm
(18,755.3081 rad.min-1)

Min.: 1,440 rpm
(9,047.7868 rad.min-1)

Operating temperature

50 °C
(122 °F)

Description

National Motors’ NM Series consists of motors designed for fire pump applications as specified in NFPA 20. These three-phase horizontal low-voltage squirrel-cage medium induction motors are constructed and manufactured as per the requirements of NEMA MG 1 standard Design B. With Open Drip Proof enclosures, they provide the best possible ventilation suitable for environments having minimal airborne contaminants and better cooling that contribute to the most efficient performance available from these motors. National Motor’s also offers open drip proof motors that are designed and manufactured to meet or exceed the latest IEC standards where UL certification are not mandatory. • NEMA Energy efficient design • Performance As per NFPA 20 • 3 Phase • 15 Service Factor • Re-greaseable Ball Bearing • Rolled Steel & Cast Iron construction frame. • UL File No. EX26863 • Stainless Steel name plate • RAL 3000 Standard red painted. • IP23 Degree of Protection • Altitude rating of 1000 meters above sea level