SamplexPower PST-300-12 Manuel Du Propriétaire page 34

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or electrocuted. A Ground fault Circuit Interrupter (GfCI) protects people from electric
shock by detecting leakage and cutting off the AC source.
The AC output of this inverter is available through a NEMA5-20R GfCI Duplex Recepta-
cle. The Neutral slot of this receptacle (longer rectangular slot) is internally bonded to
the metal chassis of the inverter.
There is a Green indicator light that will be lighted when the GfCI is operating normally.
The light will switch off if the GfCI is tripped.
The GfCI is provided with the following buttons:
- Reset Button: In case the GfCI is tripped, it can be reset by pressing the
"Reset Button".
NoTE: for the Reset Button to operate, the inverter has to be in oN condition.
- test Button: This button is used to test if the GfCI is operating normally. Test the GfCI
periodically to ensure that it is operating normally.
The GfCI will trip due to the following conditions:
- Leakage or ground fault
- Neutral to Ground bonding (connection) on the load side of the GfCI
!
cAUtion!
Do not feed the output from the GfCI receptacle to a Breaker Panel / Load
Center where the Neutral is bonded to the Earth Ground. This will trip the GfCI.
Providing Backup Power Using transfer Switch
for this application, use a Transfer Switch that has Double Pole, Double Throw Contacts
like in Samlex America, Inc. Transfer Switch Model No. STS-30. This type of Transfer
Switch will be able to switch both the Hot and the Neutral and will prevent tripping of
the GfCI due to Neutral to Ground bond in the Utility power:
- feed utility power and output power from the inverter to the two inputs of the Trans-
fer relay
- feed the output of the Transfer Switch to a Sub-Panel to feed AC loads requiring
backup power
- Do not bond (connect) the Neutral and the Ground in the Sub-Panel
- When Utility power is available, the 2 poles of the Transfer Switch will connect the Hot
and Neutral of the Utility power to the Hot and Neutral in the Sub-Panel. The Neutral
of the Sub-Panel will be bonded to the Earth Ground through the Main Utility Supply
Panel. As the Neutral of the inverter will be isolated from the Neutral of the utility
power, the Neutral of the GfCI output will not be bonded to the Earth Ground and
the GfCI will not trip
- When the Utility power fails or is interrupted, the Hot and the Neutral of the GfCI will
34 | SAMLEX AMERICA INC.
Installation