A. All motors are required to be equipped with overload protection located near the motor. 1. Overload protection shall: a. Be located between the circuit breaker or fuse provided under Division 26 and the motor windings. b. Meet one of the options specified in the following paragraph. 2. Overload protection may be: a. Located in the motor installed by the motor manufacturer. (preferred) b. A separate device located near the motor. c. Located in, or with, a disconnect switch provided by the equipment manufacturer. Provision of this switch shall not modify, change, or eliminate any Division 26 requirement. This means some equipment shall be provided or specified with two disconnecting means. B. Coordinate features of motors, installed units, and accessory devices. Provide motors that are: 1. Compatible with controller 2. Matched to torque and horsepower requirements of the load. 3. Matched to ratings and characteristics of supply circuit and required control sequence. C. Coordinate motor support with requirements for driven load; access for maintenance and motor replacement; installation of accessories, belts, belt guards; and adjustment of sliding rails for belt tensioning. D. Belt tension must be wrench and socket adjustable. E. Belt tensioning device must accommodate adjustable sheaves. PART 2 - PRODUCTS 2.1 MOTOR REQUIREMENTS A. Motor requirements apply except as follows: 1. Ratings, performance, or characteristics for a motor are specified in another Section or are scheduled on the drawings. 2. Motor manufacturer requires ratings, performance, or characteristics, other than those specified to meet indicated performance. 2.2 MOTOR CHARACTERISTICS A. Frequency Rating: 60 Hz. B. Voltage Rating: NEMA standard voltage selected to operate on nominal circuit voltage to which motor is connected. C. Duty: Continuous at 105 deg F and 3300 feet above sea level. D. Capacity and Torque sufficient to: 1. Start, accelerate, and operate connected load. 2. Maintain designated speeds. 3. Operate at installed altitude and environment. 4. Operate with indicated operating sequence. 5. Operate without exceeding nameplate ratings. 6. Operate without utilizing service factor. E. Enclosure: Open drip-proof unless otherwise indicated. F. Minimum Service Factor: 1.15 unless otherwise indicated. 2.3 POLYPHASE MOTORS A. Description: NEMA MG 1, Design B, medium induction motor
