§111.51-4. Short-circuit calculations for systems 1500 kilowatts or above.
46 C.F.R. § 111.51-4
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:
Exact calculations using actual impedance and reactance values of system components.
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).
The estimated calculations using a commercially established analysis procedure for utility or industrial applications.
Notes, amendments, and revision history
Source
Source: USCG-2020-0075, 88 FR 16362, Mar. 16, 2023, unless otherwise noted.
Authority
Authority: 46 U.S.C. 3306, 3703; DHS Delegation No. 00170.1, Revision No. 01.2. Section 111.05-20 and Subpart 111.106 also issued under sec. 617, Pub. L. 111-281, 124 Stat. 2905.
Source
Source: CGD 74-125A, 47 FR 15236, Apr. 8, 1982, unless otherwise noted.