Statutes, codes, and regulations
Code of Federal Regulations
Title 46 - SHIPPINGChapter I - COAST GUARD, DEPARTMENT OF HOMELAND SECURITYSubchapter J - ELECTRICAL ENGINEERINGPart 111 - ELECTRIC SYSTEMS-GENERAL REQUIREMENTS
Subpart 111.51 - CALCULATION OF SHORT-CIRCUIT CURRENTS AND COORDINATION OF OVERCURRENT PROTECTIVE DEVICES
Section 111.51-4 - Short-circuit calculations for systems 1500 kilowatts or above

46 C.F.R. § 111.51-4

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Current through November 30, 2024
Section 111.51-4 - Short-circuit calculations for systems 1500 kilowatts or above

Short-circuit calculations must be submitted for systems with an aggregate generating capacity of 1500 kilowatts or more by utilizing one of the following methods:

(a) Exact calculations using actual impedance and reactance values of system components.
(b) Estimated calculations using IEC 61363-1:1998 for AC systems and IEC 61660-1:1997 for DC systems (both incorporated by reference; see § 110.10-1 of this subchapter).
(c) The estimated calculations using a commercially established analysis procedure for utility or industrial applications.

46 C.F.R. §111.51-4

88 FR 16362 , 4/17/2023