Skip to Main Content
Shipboard Electrical Power Systems
book

Shipboard Electrical Power Systems

by Mukund R. Patel
December 2011
Intermediate to advanced content levelIntermediate to advanced
370 pages
12h 24m
English
CRC Press
Content preview from Shipboard Electrical Power Systems
System Protection 255
Secondary side rated line current = 100 × 1000 ÷ 3 × 208 = 277.6 A
General purpose CB or fuse rating on secondary side = 1.3 × 277.6 = 361 A
Primary side rated line current = 100 × 1000 ÷ 3 × 480 = 120.3 A
General purpose CB or fuse rating on primary side = 2* × 1.3 × 120.3 = 313 A
Or, time-delay CB or fuse rating on primary side = 1.3 × 120.3 = 156.4 A
* Factor 2 in the general purpose circuit breaker or fuse rating on the primary
side is to avoid nuisance tripping of the circuit under the magnetizing inrush cur-
rent when the transformer is first connected to the supply lines. Time-delay circuit
breaker or fuse on the secondary ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Dielectric Materials for Electrical Engineering

Dielectric Materials for Electrical Engineering

Juan Martinez-Vega

Publisher Resources

ISBN: 9781439828175