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TranSystems Corporation - LGM Construction

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501070099 Federal Express Oakland Sort Expansion Issued for Bid 10/11<br />

SECTION 16430 - MOTOR-CONTROL CENTERS<br />

PART 1 - GENERAL<br />

1.1 SUMMARY<br />

A. Section includes MCCs for use with ac circuits rated 600 V and less.<br />

1.2 DEFINITIONS<br />

A. CPT: Control power transformer.<br />

B. LED: Light-emitting diode.<br />

C. MCC: Motor-control center.<br />

D. MCCB: Molded-case circuit breaker.<br />

E. MCP: Motor-circuit protector.<br />

F. NC: Normally closed.<br />

G. NO: Normally open.<br />

H. OCPD: Overcurrent protective device.<br />

I. PT: Potential transformer.<br />

1.3 PERFORMANCE REQUIREMENTS<br />

A. Seismic Performance: MCCs shall withstand the effects of earthquake motions determined according to<br />

ASCE/SEI 7 “Minimum Design Loads for Buildings and Other Structures”.<br />

1. The term "withstand" means "the unit will remain in place without separation of any parts from the<br />

device when subjected to the seismic forces specified and the unit will be fully operational after the<br />

seismic event.<br />

1.4 SUBMITTALS<br />

A. Product Data: For each type of controller and each type of MCC.<br />

B. Shop Drawings: For each MCC, manufacturer's approval drawings as defined in UL 845 “Motor Control<br />

Centers”. In addition to requirements specified in UL 845 “Motor Control Centers”, include dimensioned<br />

plans, elevations, and sections; and conduit entry locations and sizes, mounting arrangements, and<br />

details, including required clearances and service space around equipment.<br />

MOTOR-CONTROL CENTERS 16430 - 1

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