Common use of Motor Information Clause in Contracts

Motor Information. Induction Motor identification per single-line diagram Motors Rated capability (kVA or HP) ≥ 500 HP Rated power factor Rated torque (per unit on machine base) Rated slip (per unit on machine base) Starting method (e.g. full-voltage, resistive, reduced voltage, delta-wye) Starts per day Starting current (per unit on machine base) Starting power factor Starting torque (per unit on machine base) Peak torque (per unit on machine base) Locked rotor current (per unit on machine base) Synchronous Motor identification per single-line diagram Motors Rated capability (kVA or HP) ≥ 500 HP Unsaturated sub-transient reactance X‟‟d (per unit on machine base) Synchronous Motor identification per single-line diagram Motors Rated capability (kVA or HP) ≥ 5000 HP Rotational inertia constant H of motor and load(s) Unsaturated reactance (per unit on machine base) Xd X‟d X‟‟d Xq X‟q X1 X2 Xo Open circuit time constants T‟do T‟‟do T‟qo T‟‟qo Armature resistance (Ra) (per unit on machine base) Copy this page and submit data on a separate sheet for each motor that is rated at greater than or equal to 500 horsepower. For each synchronous motor 10 MVA or larger, a block diagram suitable for stability studies, or an IEEE standard model type with all in-service parameter values for the exciter, shall be provided by the Customer. Models for stabilizers, under-excitation limiters and over-excitation limiters shall be provided where applicable.