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2. Fridtjof Nansen-class frigate - Wikipedia

   en.wikipedia.org/wiki/Fridtjof_Nansen-class_frigate

   2 × LRAD Long Range Acoustic Device. Aircraft carried. 1 × medium-sized ASW helicopter. The Fridtjof Nansen-class frigates are a class of frigates that are the main surface combatant units of the Royal Norwegian Navy. The ships are named after famous Norwegian explorers, with the lead ship of the class bearing the name of Fridtjof Nansen.

3. Residual-current device - Wikipedia

   en.wikipedia.org/wiki/Residual-current_device

   A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) [a] is an electrical safety device that interrupts an electrical circuit when the current passing through a conductor is not equal and opposite in both directions, therefore indicating leakage current to ground or current flowing to another powered conductor.

4. Power system protection - Wikipedia

   en.wikipedia.org/wiki/Power_system_protection

   Power system protection is a branch of electrical power engineering that deals with the protection of electrical power systems from faults [citation needed] through the disconnection of faulted parts from the rest of the electrical network. The objective of a protection scheme is to keep the power system stable by isolating only the components ...

5. Constellation-class frigate - Wikipedia

   en.wikipedia.org/wiki/Constellation-class_frigate

   The Constellation-class multi-mission guided-missile frigates of the United States Navy are based on the European multipurpose frigates (FREMM), already in service with the French and Italian navies. Constellation follows the modular but problematic littoral combat ships of the Freedom and Independence classes. [14]

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Microgrid - Wikipedia

   en.wikipedia.org/wiki/Microgrid

   Microgrid. A microgrid is a local electrical grid with defined electrical boundaries, acting as a single and controllable entity. [1] It is able to operate in grid-connected and in island mode. [2][3] A ' stand-alone microgrid ' or ' isolated microgrid ' only operates off-the-grid and cannot be connected to a wider electric power system. [4]