Standby Mode; Figure 3-2, Power Flow - Inverter Mode (Ms2000-G Model); Figure 3-3, Power Flow - Standby Mode (Ms2012-G/2812-G/4024-G Models) - Sensata Magnum-Dimensions MagnaSine MS-G Series Owner's Manual

AC HOT 1 IN
AC NEU IN
AC GROUND
DC
DC NEG
IN
DC POS
Figure 3-2, Power Flow – Inverter Mode (MS2000-G model)
3.2

Standby Mode

The MS-G Series features an internal battery charger and an automatic transfer relay when
operating in Standby mode. Standby mode begins whenever AC power (utility or generator) is
connected to the inverter's AC input. Once the AC voltage and frequency of the incoming AC power
is within the AC input limits, the automatic AC transfer relay is activated. This transfer relay passes
the incoming AC power through the inverter to power the AC loads on the inverter's output. This
incoming power is also used to activate a powerful internal battery charger to keep the battery
bank charged in case of a power failure. Refer to Figures 3-3 & 3-4 to see the fl ow of power from
the AC input to the DC and AC output while in Standby mode.
AC
IN
AC HOT 2 IN
240
AC HOT 1 IN
VAC
120
VAC
120
VAC
AC NEU IN
AC GROUND
DC
DC NEGATIVE
OUT
DC POSITIVE
Figure 3-3, Power Flow – Standby Mode (MS2012-G/2812-G/4024-G models)
© 2015 Sensata Technologies
AC Hot
Transfer Contact
INPUT
(30A)
Neutral-Ground
Transfer Contact
AC
DC
FET Bridge
Power Transformer
AC Hot
Transfer Relay
INPUT
(30A)
Neutral-Ground
Transfer Relay
AC
DC
FET Bridge
AC HOT 1 OUT
AC NEU OUT
GFCI
(20A)
GFCI
(20A)
Power Transformer
Operation
120 VAC
AC
OUT
GFCI
120 VAC
OUTPUT
AC
OUT
AC HOT 2 OUT
120
VAC
AC NEU OUT
GFCI
120 VAC
OUTPUT
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