Earthing Cygnus Hpg; When Used Inline With A Fuel Powered Generator; When Used As A Standalone Power Source; When Charging A Standalone Generator From An Ac Source - Firefly CYG/12/36 User Manual

4.2 Earthing Cygnus HPG

4.2.1 When used Inline With A Fuel Powered Generator

When Cygnus HPG is being used inline with a fuel powered generator, Cygnus
HPG should not be connected to earth directly. The fuel powered generator
should be earthed and the Cygnus HPG's earth connection will be made through
the Bus Bar or CEE Form connectors. This ensures that any earth leakage is
detected and managed correctly by the fuel powered generator.

4.2.2 When used As A Standalone Power Source

When used as a standalone generator, either powered solely from the internal
battery bank or when receiving input from a solar array, Cygnus HPG should be
connected to earth. This can be facilitated either by use of an earth rod (see
Earthing Cygnus HPG" on page
point.

4.2.3 When Charging A Standalone Generator from An AC Source

While a standalone Cygnus HPG is being charged from an AC source such as a
three phase grid connection or fuel powered generator which will be
disconnected once the unit is charged, it is not necessary to disconnect the
Cygnus HPG's earth connection.
When using as a standalone power source, a protective
earth must be connected to the unit in compliance with
applicable local standards and regulations.
This can be done either by connecting to a suitable existing
electrical earth, or by using an earth rod available from the
manufacturer as an accessory.
29) or connecting to a suitable existing earth
W A r N I N G
"4.2
E & OE,
©2014 Firefly Solar Generators Ltd.
CYGHPG-User-Manual-v2 Page 29