SECTION 3 INSTALLATION
60
3.4.2 SPLIT PHASE OUTPUT
To operate an ASX-Series power source with split phase output, set the controller for FORM2. The
wiring requirements for 1
φ
, direct-coupled or split phase loads are shown in Figures 3.4.2.1 and
3.4.2.2. Split Phase or 2 Phase operation is defined to be two voltage vectors (V
a
and V
b
) which
are equal in magnitude and separated by 180
°
. The output power is taken from the terminal block
located on the rear panel of the chassis labeled "OUTPUT POWER".
This power form has a direct-coupled voltage range of 0-264 VAC
l-l
(Models 160-ASX, 315-ASX
and 360-ASX), 0-270 VAC
l-l
(Models 140-ASX, 345-ASX, & 3120-ASX), or 0-300 VAC
l-l
(Models
120-ASX and 320-ASX) and is well-suited for driving 220 VAC single phase loads. In this case, the
high side of the load is connected to the "
φ
A" terminal and the low side of the load to the "
φ
B"
terminal. The "N" terminal is not used with this type of load.
Some loads require three connections (V
a
-N-V
b
or L
1
-N-L
2
). This type of load is commonly referred
to as the "Split Phase" type. In this case, the "N" terminal of the output terminal block is used in
addition to the wiring described above. Refer to Figures 3.4.2.1 and 3.4.2.2 for connection details.
The "CHS" terminal must always be connected to the chassis of the load. Since the output is
isolated, any output terminal (direct-coupled output only) may be connected to chassis. This allows
the user to re-establish a local ground for the output. The output (preferably Neutral) must be refer-
enced to chassis somewhere. Unless demanded by a particular application, Pacific Power Source
recommends that a jumper be installed across the "N" and "CHS" terminals of the Output Terminal
block.
The "N" terminal of the Output Power Terminal Block must always be connected to the "CHS"
terminal when using transformer-coupled outputs. Refer to Paragraph 3.4.4 for special consider-
ations when using transformer-coupled output forms.
Refer to Paragraph 3.8 for connection of the External Sense Input, when used.
NOTE:
It is the user's responsibility to meet all local and national electrical codes
when installing this equipment.
WARNING
LETHAL VOLTAGES ARE PRESENT AT THE OUTPUT TERMINALS OF THIS MACHINE !
REFER OUTPUT CONNECTION TO A QUALIFIED ELECTRICIAN.
