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Solar GreenTech 1200 User Guide
When operating the units 240v sockets this falls under the ITE on site guide for
portable generators. Please see below instructions regarding earthing and
type 1 and type 2 equipment types that should be used in conjunction of the
regulations.
Earthing conforms to the IET on-Site Guide BS 7671 :2018
Extract 2.4.1 Portable generator isolated from earth
551.4.4
Portable generators ranging in output from 0.2 kVA to 10 kVA single-phase are often
isolated from Earth, i.e. there is no connection between the chassis and/or earth
connection of socket-outlets) of the unit and the neutral of the generator winding and
Earth. The ends of the generator winding are brought out to one or more three-pin
socket-outlets which should conform to BS EN 60309-2. The earth socket-tube of the
socket-outlet (s) is usually connected internally to the frame of the generator only; see
Figure 2.4.1.
413 This arrangement is a form of electrical separation, where basic protection is provided
418.3
by basic insulation of live parts or by barriers and enclosures, and fault protection is
provided by simple separation of the separated circuit from other circuits and from Earth.
The requirements for electrical separation can be found in Section 413 of BS 7671
where one item of equipment is supplied and Regulation 418.3 where more than one
item of equipment is supplied by the separated circuit. However, the requirements of
Regulation 418.3 could prove difficult or impracticable to meet in a typical application of
a portable generator.
It is extremely important to note that a portable generator isolated from earth should
➢
only be used to supply equipment in the following permutations:
➢
one or more items of Class Il equipment
➢
one item of Class I equipment
one or more items of Class Il and one item of Class I equipment.
The supply of only Class Il equipment, however, is preferable.
No more than one item of Class I equipment should be supplied at any time as faults can
be presented as voltages and operatives can provide a path for current flowing between
exposed-conductive-parts of faulty equipment
.
