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i <br /> I <br /> 2 . The low-voltage terminal box shall provide a terminal strip for the space heater. All <br /> necessary external wiring between the low voltage terminal box and connections to the <br /> motor shall be factory installed . <br /> 3 . Each motor shall have adequate means for attaching a #4/0 ( 100 h .p . and above ) AWG, <br /> or a # 1 /0 (below 100 h . p. ) AWG copper grounding conductor to the motor frame near the <br /> base . It shall be a mechanical clamp terminal connector located on the same side as the <br /> stator lead junction box . <br /> 4 . Motors shall be designed and manufactured for operation in a direction as required for <br /> driven equipment . The phase sequence at the specified rotation , shall be marked <br /> permanently and plainly inside the stator lead junction box . <br /> S . Motors shall be free of objectionable noise and vibration. Motor sound pressure level shall not <br /> exceed 85 dbA at five (5 ) feet under free field, no load conditions in accordance with IEEE <br /> Standard 85 . All motors shall have a maximum equivalent A-weighted sound level of 80 db A as <br /> determined in accordance with IEEE Standard No . 85 under full load and full speed conditions . <br /> Vibration level measured on the bearing housing shall be in accordance with values shown in <br /> NEMA Standards . <br /> T. All motors shall have breather and drain plugs to allow proper drainage of moisture from inside . <br /> i <br /> U. VFD Operated Motors : Motors for use with variable frequency drives shall be manufactured, <br /> 1 <br /> tested, and installed as outlined herein. In addition, the following special requirements shall <br /> apply: <br /> I 1 . Motors controlled by adjustable frequency drives shall be specifically designed for <br /> inverter operation. <br /> 2 . Insulation shall be sufficient to protect against the adverse effects of non-sinusoidal <br /> waveforms . All insulation material shall be non-hygroscopic . <br /> 3 . Motor service factor shall be 1 . 15 derated to 1 .0 for non-sinusoidal voltage waveforms. <br /> 4 . Nameplate information shall include both sinusoidal and non-sinusoidal data. The non- <br /> sinusoidal data shall include hertz vs. torque rating, hertz vs . horsepower rating, <br /> J maximum full load amperes and speed ranges. <br /> 1 5 . It is extremely important that the motor be completely isolated/disconnected from the <br /> I drive prior to meggering the motor. <br /> 1 2.03 ACCESSORY REQUIREMENTS <br /> A. Horizontal motors 3 hp. and larger, and all vertical motors, shall have split-type cast metal <br /> conduit boxes . Conduit boxes for other than open drip-proof motors shall be gasketed. <br /> 1 <br /> B . All motors weighing 265 pounds ( 120 Kg) or more shall have suitable lifting devices for <br /> installation and removal . <br /> 1 044572017 <br /> ( <br /> 16490 - 7 <br />