User manual

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Selecting a Voltage Group to Use
The Voltage Group submenu can be used for this purpose. Alternatively one or
two configurable switched inputs can be used to determine the voltage group to
be used. See section 3.7.2.1 below. The configurable switched inputs override
the Voltage Group submenu.
Table 12 – GenSet Configurations and How to Configure Them in the GSC400
Refer to Figure 5 on page 29 for a diagram of each of the various three phase
configurations.
GenSet
Configuration
Description
Voltage
Groups
Supported
Group 1, 3, 4 Setting
Single Phase –
2 wire
The GSC400 display
is fixed to L-N.
1
Set Group 1 Setting to “2
wire single”
Single Phase –
3 wire
120 / 240VAC
1
Set Group 1 Setting to “3
wire single”
Three Phase: 3
Wire Delta
No neutral reference.
Use of 1:1
transformers
required to provide
neutral reference.
2, 3, 4
If using Group 3 set Group
3 option to “Normal
Voltage”. If using Group 4
set Group 4 option to
“Three Phase”.
Three Phase: 4
Wire Delta
Center-tapped on
one phase for a
neutral reference.
Phase C on GSC400
is the “stinger” high
leg.
4
Set Group 4 Setting to
“Four Wire Delta”
Three Phase: 4
wire Wye
Neutral reference
taken from where
three windings come
together.
2, 3, 4
If using Group 3 set Group
3 option to “Normal
Voltage”. If using Group 4
set Group 4 option to
“Three Phase”.
Three Phase:
Wye – Voltage
Sensing taken
in midpoint of
each winding.
The voltage sensing
for the GSC400 is
taken from the
midpoint of each of
the three windings.
Reduces voltage to
controller by ½.
3
Set Group 3 option to “2
Times Voltage”.