Sorensen SFA Series, Operation Manual

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Installation Sorensen SFA Series
5–15 kW: ¼-20UNC-2B x ½", 4 ea AC input only
20–30 kW: 3/8-16UNC-2B x 7/8", 6 ea
•
Black screw, 10-32UNC-2B x ½", front panel rack fastener:
5–15 kW: 4 ea
20–30 kW: 8 ea
If any of these parts are missing, please contact Elgar Customer Service at
1-800-73ELGAR (1-800-733-5427).
2.3
INPUT/OUTPUT CONNECTIONS
WARNING!
High voltage present! Risk of electrical shock. Do not remove cover. Refer
to qualified service personnel.
Table 2–1 lists all external connections for the SFA Series models. Table 2–2
and Table 2–3 provide input and output connection descriptions by power
supply type.
For permanently connected equipment, a readily accessible disconnect device
shall be incorporated in the fixed wiring. For pluggable equipment, the socket
outlet shall be installed near the equipment and shall be easily accessible.
Take precautions to ensure that the concentration of ozone is limited to a safe
value. The recommended long-term exposure limit for ozone is 0.1 PPM (0.2
mg/m
3
).
CAUTION!
For proper connection to the mains, a 100–amp circuit breaker or fuse for 3U
units and a 200–amp circuit breaker or fuse for 6U units is required.
WARNING!
Under no condition should the negative output terminal exceed 300V to earth
ground for non-isolated Analog programming. (600V for supplies with the Isolated
Analog option installed.)
CAUTION!
Floating the negative output terminal floats the power supply’s internal control
circuitry common level to the same potential as the negative output terminal. On a
standard non-isolated supply the common of the analog control connector (J1)
floats at the same potential as the negative output terminal. Damage may occur if
the non-isolated analog control connector of a supply is connected to an external
ground referenced input/output device. Such a connection creates ground loop
currents. To correct ground loop problems the Isolated Analog option is advised in
order to isolate the external ground reference signals from the internal control
circuitry of the supply.
2-2 M550292-01 Rev C