Operating the Bypass Switch

Normal Operation

Inverter AC power passes through the inverter to the load (Figure 2-2).

In this configuration, power passes through the inverter to the connected load. When external AC power is not available, power from the external DC source is used by the inverter to power the AC loads.

‘

 

 

 

ON

ON

 

 

 

 

60

Inverter in Circuit

60

 

 

 

 

OFF

OFF

 

 

 

INVERTER

INVERTER

 

 

 

BYPASS

DISCONNECT

4

3

2

BOTH OFF TO DISCONNECT AC OUTPUT

1

 

Figure 2-2Normal Operation

Bypass Operation

External AC power routed directly to the AC loads (Figure 2-3).

In this configuration, power passes directly to the connected load, bypassing the inverter. This allows the inverter to be removed from service without affecting the connected load. If the extenal source of AC becomes unavailable while the Bypass Operation is selected, the load will be dropped.

‘

 

 

 

ON

ON

 

 

 

60

 

Inverter out of Circuit

 

60

 

 

 

OFF

OFF

 

 

 

INVERTER

INVERTER

 

 

 

BYPASS

DISCONNECT

4

3

2

BOTH OFF TO DISCONNECT AC OUTPUT

1

 

Figure 2-3Bypass Operation

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