KEPCO KLP Series (older -1200 models) Operator Manual - Manual (Page 31)

KLP-HV 073008
2-5
2.3 SOURCE POWER REQUIREMENTS
This power supply operates with the installed circuit breaker from either d-c or single phase a-c
mains power over the voltage and frequency ranges specified in Table 1-2 without adjustment
or modification.
2.4 COOLING
The power devices used within the power supply are maintained within their operating tempera-
ture range by means of internal heat sink assemblies cooled by three internal (d-c type) cooling
fans.
ALL INLET AND EXHAUST OPENINGS AT THE FRONT AND REAR OF THE POWER SUP-
PLY CASE MUST BE KEPT CLEAR OF OBSTRUCTION TO ENSURE PROPER AIR ENTRY
AND EXHAUST. Although not a requirement, it is recommended that side and top vent open-
ings be clear of obstruction for more efficient cooling. Periodic cleaning of the power supply inte-
rior is recommended by authorized service personnel only (see KLP Service Manual for
instructions).
If the power supply is rack mounted, or installed within a confined space, care must be taken
that the ambient temperature, which is the temperature of the air immediately surrounding the
power supply, does not rise above the specified limits (see Table 1-2).
2.5 PRELIMINARY OPERATIONAL CHECK
A simple operational check after unpacking and before equipment installation is advisable to
ascertain whether the power supply has suffered damage resulting from shipping.
Refer to Figures 2-1 and 2-2 for location of operating controls and electrical connections. Table
2-1 explains the functions of operating controls and indicators.
NOTE: This test must be performed with IEEE 488, RS232, and ANALOG I/O ports discon-
nected, and ANALOG I/O SETTINGS switch positions 3 and 5 set to OFF.
1. With POWER circuit breaker set to OFF position, connect the power supply to source
power (see PAR. 2.7.2).
2. With no load connected, set POWER circuit breaker to the ON position. Each time the unit
is turned on an internal self-test is performed. After the test has been successfully com-
pleted, the unit displays the following:
• The status display flashes MODL (model) for two seconds while the DC VOLTS display
shows Eo
MAX
and the DC AMPERES display shows Io
MAX
. (E.g. for model 75-33-1200,
DC VOLTS reads 75 and DC AMPERES reads 33.)
• Then the status display flashes VIRT (Virtual model) for two seconds while the DC
VOLTS display shows Eo
MAX
and the DC AMPERES display shows the current corre-
sponding to 1200W. (E.g. for model 75-33-1200, DC VOLTS reads 75 and DC
AMPERES reads 16.)
• Then the status display flashes PROT (protection limits) for two seconds while the DC
VOLTS display shows 120% of Eo
MAX
and the DC AMPERES display shows 120% of
current corresponding to 1200W. (E.g. for model 75-33-1200, DC VOLTS reads 90.0
and DC AMPERES reads 19.2.)