KEPCO HSP Series Operator Manual - Manual (Page 18)

2-4
HSPSERIES OPR 050614
7. Using the DVM, measure the voltage across the front panel test points “I
MAX
” and “COM”;
this voltage is factory adjusted to 10.0V, and corresponds to 100% of maximum current (see
PAR. 3.7). If necessary, readjust to 10.0V using the trim pot labeled “I
MAX
” accessed through
the front panel; if desired, readjust for lower current limit (see PAR. 3.7).
8. Verify that front panel indicators still appear as in step 4 above.
9. Disconnect sense lines with power supply still operating, either by removing the mating I/O
connector or by manually opening the sense line connected to Pin 37; verify that the power
supply output turns off, and that the “DCFAIL” indicator LED on the front panel is now lit,
along with the “POWER” indicator LED. (NOTE: At no load the output voltage will drop
slowly.) Turn the front panel circuit breaker off and wait until the “DCFAIL” indicator LED
blinks. Reconnect the sense lines, then turn the circuit breaker back on; verify that the output
voltage returns to the value measured in step 5 above, and that the indicator LEDs appear
as in step 4 above.
10.Turn off front panel circuit breaker and remove source power connection.
2.6 INSTALLATION (REFER TO FIGURE 1-4, OUTLINE DRAWING)
The HSP power supply may be operated as a fixed rack-mounted unit, or as a plug-in modular
instrument as follows:
• When used as a fixed, rack-mounted unit, attach the HSP power supply to the mounting
surface using the four holes in the bottom of the chassis surrounded by plastic grom-
mets.
• When used as part of a plug-in power system, refer to the Instruction Manual accom-
panying the applicable Kepco rack adapter for installation directions.
For all installations, provide adequate clearance around air inlet and exhaust locations and
ensure that the temperature immediately surrounding the unit and especially near the air inlets
does not exceed the maximum specified ambient temperature for the operating conditions.
2.7 WIRING INSTRUCTIONS
Interconnections between an a-c power source and a stabilized power supply, and between the
power supply and its load are as critical as the interface between other types of electronic equip-
ment. If optimum performance is expected, certain rules for the interconnection of source,
power supply and load must be observed by the user. These rules are described in detail in the
following paragraphs.
2.7.1 SAFETY GROUNDING
Local, national and international safety rules dictate the grounding of the metal cover and case
of any instrument connected to the a-c power source, when such grounding is an intrinsic part of
the safety aspect of the instrument. The ground terminal of the source power connector (see
Figure 2-2) is connected to the HSP chassis and the instructions below suggest wiring methods
which comply with these safety requirements; however, it is the customer's responsibility to
ensure that all applicable electric codes for safety grounding requirements are met.
IT IS IMPERATIVE THAT THE USER PROVIDE ALL THREE SOURCE WIRE CONNEC-
TIONS, AS THIS CONNECTION IS THE SAFETY GROUND PROVISION!
WARNING