Operating the ACCB

AC Input/Output Off

No power to the load or charger (Figure 2-4).

In this configuration, power from both the external sources of AC and the inverter is removed from the loads. This allows the inverter, the connected loads, or any other installed equipment beyond the ACCB to be serviced.

‘

 

Both external AC

ON

ON

 

 

 

 

 

source and Inverter OFF

 

 

 

 

 

 

60

60

 

 

 

AC Input

OFF

OFF

AC Output

 

from Grid or Gen

 

to Loads

 

 

 

INVERTER

INVERTER

 

 

 

 

BYPASS

DISCONNECT

 

4

3

2

BOTH OFF TO DISCONNECT AC OUTPUT

 

1

 

 

Figure 2-4AC Output OFF

Dual Inverters: 240 Vac Loads

WARNING: Fire Hazard

In a series-stacked, inverter installation (120/240 Vac) with a bypass switch for each inverter, both bypass switches must be in the same position.

If the bypass switches are not in the same position, the resulting AC output of the two bypass switches may not be 180° out-of-phase from each other. This can result in excess current on the neutral wire creating a potential fire hazard.

This can also result in less than 240 Vac output. Loads requiring 240 Vac will not run.

2–4

975-0046-01-01