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• The unit will start operating in Inverter Mode. The Inverter will switch ON and
will provide 115VAC to the AC outlets.
• The Green LED “Inverter” (8, Fig 3.1) will be switched ON
• The 2 cooling fans will switch ON momentarily for around 6 seconds and then
switch off if the load connected to the AC outlets is less than 85W. The fans are
load controlled and will be switched oN automatically when the AC load in the
Inverter Mode is more than 85W
8. Wait for a few minutes and then Switch ON the AC side load(s). If more than one
load is used, switch oN one by one so that starting surges are staggered to prevent
overload shut down.
• If the AC load is more than 85W, the 2 cooling fans will switch ON
9. Under normal operation, the AC load(s) will be powered from the Inverter. In case any
abnormal operation is observed, refer to Troubleshooting Guide in Table 6.1 – Section 6.
10. Plug the AC input cord to the 120 VAC, 15A GfCI protected Grid AC outlet.
11. As soon as Grid input is detected, the Inverter will be switched off, 115VAC output
will be cut-off from the AC outlets and the Green LED “INVERTER” (8, Fig 3.1) will be
switched off.
note:
This Green LeD will
not
be switched off immediately but will
dim slowly and extinguish fully in around 1 minute
12. Within 1 sec from the time the Grid power is detected, the following will be initiated:
• Transfer Relay K1 will be de-energized, and through its normally closed (NC)
contacts, the connection of the Line Sockets of the AC outlets will be transferred
from the Line conductor of the Inverter to the Line Conductor of the Grid input
for Grid pass-through.
• Transfer Relay K2 will also be de-energized and through its Normally Closed (NC)
contacts, the Grounding Sockets of the two AC outlets will be transferred from
the internal GfCI circuitry to the metal chassis of the unit
13. Switch ON the Battery Charger using ON/OFF Switch “CHARGER” (2, Fig 3.1).
• Green LED “CHARGER” (7, Fig 3.1) will be switched ON. The battery will start
getting charged as described in Section 2.5.2
• The 2 cooling fans will switch ON for a short duration of around 6 sec and then
switch off. These fans are load controlled and will switch oN automatically
when the charging current is more than 3 ± 1A
14. When Grid power fails or if the breaker / switch supplying Grid power to the Grid AC
outlet is switched off, the unit will transfer to Inverter Mode. The following actions
will be carried out on transfer to this Mode:
• As soon as Grid power failure is detected, starting of the Inverter is initiated.
Green LED “INVERTER” (8, Fig 3.1) is switched ON.
• Within a time delay of 2 to 3 sec from the time the Grid AC failed:
• Transfer Relay K1 will be energized, its Normally Open(NO) will close and will
transfer connection of the Line Sockets of the AC outlets from Line conductor
of the Grid input to the Line conductor of the output of the Inverter
SeCTIOn 5 |
Operation
Summary of Contents for SAM Series
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