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Installation and Operation
Sorensen DCS Series 1kW and 1.2kW Supplies
2-2
M362500-01 Rev K
To convert the unit for use with a
100-130 Vac input
, perform the following steps:
1. Ensure that the unit is switched off and disconnected from any power source.
2. Remove the Phillips head screws that secure the cover and then remove the cover.
3. Remove the 230 Vac voltage selector jumper located at the front center of the PCB from
its mating header (P1 on the PCB) and install the attached 115 Vac jumper in its place.
4. Remove the adhesive backed 115 Vac 20A label from fan and cover the 230 Vac 10A
input specification above the rear panel AC connector.
5. Reinstall the cover and replace screws.
6. Install a 125 Vac 30 Amp rated plug and cord ensuring that the neutral (white) wire and
line (black) wire are connected in the correct positions and that the safety ground wire is
connected to the ground screw.
Note that both the 1kW and 1.2kW models can exceed the 15A standard wall outlet
capacity at full load.
2.3.2
Input Line Impedance
The maximum input line impedance for operation at full rated output is 0.5 ohm. Higher source
impedances can be tolerated by raising the input line voltage or by reducing the output voltage
and/or current.
2.3.3
Ventilation Requirements
The DCS power supply may be used in rack mounted or benchtop applications. In either case
sufficient space must be allowed for cooling air to reach the ventilation inputs on each side of
the unit and for the fan exhaust air to exit from the rear of the unit.
2.3.4
Output Voltage Biasing
WARNING
If the output voltage is to be biased relative to safety ground, the power
supply outputs may be biased up to a maximum of 150 Vdc with respect
to the chassis.
NOTE:
To provide protection for personnel in the case of unit failure and to
ensure proper power supply operation, the safety ground wire of the AC input line
cord must
always
be connected to the ground screw provided.
NOTE:
To provide external overcurrent protection customer/user should use an
AC Input circuit breaker rated 30 Amp, , 125V when using the 100-130 input
configuration. For 200-250V input configuration, a 15 Amp, 250V circuit breaker
should be used
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