SAMLEX AMERICA INC. | 15
SeCTIOn 4 |
Installation
(a)
(c)
(b)
Fig 4.1
Mounting Orientation
on Wall
4.4 GrounDinG anD GrounD fauLt / LeaKaGe protectionS
4.4.1 Dc Side Grounding and Ground fault protection
For DC side grounding and protection against Ground Fault, an M5 Bolt and Nut (15, Fig 3.1)
has been provided. Connect this to the earth Ground in shore based installations / Vehicle
Chassis Ground using minimum AWG #8 wire.
4.4.2. ac Side Grounding and Leakage protection
AC Side Grounding and Leakage Protection are provided as follows:
(i)
condition 1: ac input cord is plugged into Gfci protected Grid ac outlet and Grid
voltage is available at this outlet:
The Grounding Conductor of the AC input cord (Green wire) is internally connected
to the metal chassis of the unit. Hence, the metal chassis of the unit will also get
connected to the earth Ground in the Grid AC Supply Panel through the above
mentioned Grounding Conductor of the AC input cord. on detecting availability of
Grid input voltage, internal Ground Switching relay K2 will be de-energised and the
grounding sockets of the two NEMA5-15R AC outlets (1, Fig 3.1) will be connected to
the metal chassis of the unit. Hence, the metal chassis of the unit and the metal chassis
of the AC loads will be bonded to the earth Ground in the Grid AC Supply Panel.
Leakage protection will be provided by the GfCI in the AC outlet providing AC input
power to the unit. On detecting leakage, the external GFCI supplying Grid AC power
to the unit will trip and disconnect AC input power. When loss of Grid AC input power
is detected, the load will be transferred to the Inverter through the internal Transfer
relay K1. As there is leakage in the load, the Inverter will also be shut down by the
internal GFCI circuitry due to leakage as explained at Condition 2 (ii) below. Under this
condition, Green LED “CHARGER” (7, Fig 3.1) will be OFF and Red LED “FAULT” (9, Fig
3.1) will be ON (Refer to Section 6, Table 6.1)
!
caution!
Please note that when Grid input power is available, Ground Switching relay K2
will be de-energized and will disconnect the internal GFCI protection circuitry for
protection against leakage on the load side. Hence, it is to be ensured that the AC
input cord is plugged into 15A, GfCI protected AC outlet to ensure leakage protec-
tion on the load side.
Summary of Contents for SAM Series
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