IEEE 841-1986 - IEEE Recommended Practice for Chemical Industry Severe Duty Squirrel-Cage Induction Motors-600 V and Below
Standard Details
This standard applies to high-ef?ciency TEFC, horizontal and vertical, single-speed, squirrel cage polyphase induction motors, up to and including 500 hp, in NEMA frame sizes 143T and larger, for petroleum, chemical, and other severe duty applications (commonly referred to as severe duty motors). Excluded from the scope of this standard are motors with sleeve bearings and additional speci?c features required for explosion-proof motors.
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