IEEE 1290-1996 pdf download IEEE Guide for Motor Operated Valve (MOV) Motor Application, Protection, Control, and Testing in Nuclear Power Generating Stations
1. Overview
1.1 Scope
This guide applies to motors used to drive valve operators in nuclear power generating stations.
1.2 Purpose
This guide presents guidelines to evaluate the adequacy of motors used to drive valve operators; toprovide recommendations for motor application; and to provide methods for protection, controland testing of motors used for valve operation.
2. References
This guide shall be used in conjunction with the following standards. When the following standardsare superseded by an approved revision, the revision shall apply.
ICEA P32-382 (Reaff 1992). Short-Circuit Characteristics of Insulated Cables.IEEE Std 43-1974 (Reaff 1991), IEEE Recommended Practice for Testing Insulation Resistance of RotatingMachinery (ANSI).2
IEEE Std 242-1986 (Reaff 1991), 1EEE Recommended Practice for Protection and Coordination of Industrial andCommercial Power Systems (IEEE Buff Book) (ANSI).
IEEE Std 382-1985,IEEE Standard for Oualification for Actuators for Power Operated Valve Assemblies with SafetyRelated Functions for Nuclear Power Plants (ANSI).
IEEE Std 432-1992, 1EEE Guide for Insulation Maintenance for Rotating Electrical Machinery (5 hp to less than10000 hp)(ANSI)
IEEE Std 603-1991. IEEE Standard Criteria for Safety Systems for Nuclear Power Generating Stations (ANSI)
IEEE Std 741-1990,1EEE Standard Criteria for the Protection of Class IE Power Systems and Equipment in NuclearPower Generating Stations.
IEEE Std C37.2-1991. EEE Standard Electrical Power System Device Function Numbers (ANSI).
NEMA ICS 2-1993. Starters, Contactors and Overload Relays. Rated not More Than 2000 Volts AC or 750 Volts DCsections 321-327)4
NEMA MG 1-1993,Motors and Generators.
NEMA ST 1-1988Specialty Transformers (Except General-Purpose Type).
3. Definitions
3.1 duty cycle of a VAM: The number of consecutive valve strokes required for the intended service of the valve.
Plant operation or testing may require successive stroking of the VAM.
3.2 duty cycle time of a VAM: The time for one stroke multiplied by the duty cycle.3.3 inrush current: The rapid change of current with respect to time upon motor energization. Inrush curent isdependent upon the voltage impressed across the motor terminals and the motor inductance by the relationship V – ldi/dt.
3.4 locked rotor torque: The torque output capability of the VAM at zero speed and rated voltage and frequency.3.5 nonlocking gear train: A power transmission gear train design that allows the power train to back-drive wheneverthe primary driving force is removed.
3.6 overload: Operation of equipment in excess of normal, full load rating, or of a conductor in excess of rated ampacity, which, when it persists for a sufficient length of time, would cause damage or dangerous overheating. A fault such as a short circuit or ground fault is not an overload.
IEEE 1290-1996 pdf download
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