SamplexPower Evolution Series, Руководство пользователя, Страница: 60 / 140

60 | SAMLEX AMErICA INC.
• When operating as an inverter, the current carrying conductor of the Inverter Section that is con -
nected to the Output Neutral terminal of EVO
TM
is bonded to the metal chassis of EVO
TM
by the
“Output Neutral to Chassis Ground bond Switching relay” (K4 in fig 4.1). As the metal chassis
of EVO
TM
is in turn bonded to the Earth Ground (in shore installations) or to the rV Ground (chas-
sis of the rV) or to the boat Ground (DC Negative Grounding bus bar and the Main AC Ground-
ing bus bar are tied together in a boat and this is called the “boat Ground”), this current carrying
conductor of the Inverter Section (connected to the output terminal) will become the Grounded
Conductor (GC) or the Neutral of the Inverter Section.
• When in Charging Mode, the Neutral conductor of the Grid power/Generator will be con -
nected to the Output Neutral terminal of EVO
TM
. At the same time, the “Output Neutral to
Chassis Ground bond Switching relay” (K4 in fig 4.1) will unbond (disconnect) the Out-
put Neutral connector of EVO
TM
from the metal chassis of EVO
TM
. This will ensure that the
Grounded Conductor (GC) i.e. the Neutral of the Grid power/Generator is bonded to the
Earth Ground at one single point at the location of the AC Power Distribution System of the
Marina/rV Park/Shore Power.
• Disabling neutral to ground bond : In some applications, the Output Neutral of EVO
TM
may be required to remain isolated from the chassis/Ground at all times. for this, automatic
Output Neutral to Ground bond can be disabled by disconnecting the Male/female Quick
Disconnect located in the AC wiring compartment. [Please see (i) 13, fig 3.9 and (ii) "QD' in
figs 4.1]
Please read the following on-line white Papers for more details at www.samlexamerica.com
(home > Support > white Papers):
- “neutral to ground Switching in rV and Marine Applications”
4.5.2 operation of transfer relay and output neutral to Chassis ground
bond Switching relay
refer to Schematic at fig 4.1.
the bi-directional transformer is used as follows:
o
feeds AC output from the Inverter Section when Grid / Generator power is not available.
o
feeds Grid / Generator power to the battery Charger Section when Grid / Generator are
available.
Switching of hot output (outPut Line)
o
40A rated SPDT relays K2 and K3 are used to switch the Hot Output Connector
(
outPut Line
) to either the Inverter Section or to Grid / Generator
o
When Grid / Generator Power is available, relays K2 or K3 will be energized and contact
4 switches over to contact 5 (Grid has PrIOrITY over Generator if both are present
simultaneously). The bidirectional Transformer works as a battery Charger. The Hot AC
input from the Grid (GrID LINE) or from the Generator (GEN LINE) is fed to the Hot input
of the bi-directional Transformer for battery charging and at the same time, it is passed
through to the Hot Out (OUTPUT LINE) for powering the AC loads
o
When Grid / Generator power fails, relays K2 / K3 will be de-energized and contact 4
switches back to contact 3. Output from the Inverter Section is fed to the bi-directional
Transformer and onwards to the Hot Out (OUTPUT LINE) for powering the AC loads
SECTIOn 4 |
general Description & Principles of Operations