SL2KW SERIES MANUAL
7
118088-001 REV C
Chapter 3
O
PERATING
I
NSTRUCTIONS
3.1 Operation
THIS EQUIPMENT GENERATES DANGEROUS
VOLTAGES THAT MAY BE FATAL.
PROPER GROUNDING OF ALL HIGH VOLTAGE
EQUIPMENT IS ESSENTIAL.
BEFORE CONNECTING THE POWER SUPPLY
TO THE AC LINE, FOLLOW THIS STEP BY STEP
PROCEDURE.
DO NOT CONNECT THE POWER SUPPLY TO
THE AC LINE UNTIL STEP H IS REACHED.
Failure to follow these procedures may void the warranty.
A)
Insure that the Circuit Breaker is in the OFF position
(0).
B)
Check the input voltage rating on the nameplate of
the supply and make certain that this is the rating of
the available power source. Spellman SL2KW Series
units operate on 208Vac Three Phase (220Vac Single
Phase if 220Vac Single Phase is ordered).
C)
PROPER GROUNDING TECHNIQUES:
The
chassis of high voltage power supplies must be
grounded, preferably to a water system ground using
copper pipe or other earth ground using the ground
stud B1 at the rear of the unit. See Figure 3.1 for a
typical operating set-up.
The return line from the load should be connected to
the ground stud, on the rear of the power supply.
Using a separate external ground at the load is not
recommended.
D)
Attach the output cable to the load.
E)
Plug the high-voltage output cable provided with the
unit into the rear of the supply and hand tighten the
knurled collar.
F)
OPTIONS NOTE
: See Section 5 for hook-up and
operating instructions for the options on your unit.
Custom models may also require set-up changes.
G)
For initial turn-on, rotate the KILOVOLT control
fully counter-clockwise to the zero voltage position.
H)
The input power cable may now be connected to the
AC power line.
I)
Switch the front panel circuit breaker to the ON
position (1). (If the supply is to be turned off for an
extensive period of time, the line cord should be
disconnected). The unit is now in the HIGH
VOLTAGE OFF mode. The HIGH VOLTAGE OFF
light should be lit.
J)
Depress and hold the HIGH VOLTAGE OFF switch.
The front panel meters will now read the preset value
of the KILOVOLT control dial and the
MILLIAMPERES control dial. To preset the desired
level of current and voltage during operation, hold in
the HIGH VOLTAGE OFF switch and rotate the
appropriate control dial while noting its
corresponding meter reading. Release the HIGH
VOLTAGE OFF switch.
NOTE:
No actual output is being produced at this stage.
K)
Depress the HIGH VOLTAGE ON switch. The light
inside the switch should light up and the output will
slow start to the preset level output voltage and/or
output current.
NOTE:
The SL2KW Series is equipped with a slow start
circuit that ramps the output up to its maximum
setting in approximately 6 seconds after the HIGH
VOLTAGE ON switch is depressed.
L)
To terminate the generation of output power, depress
the HIGH VOLTAGE OFF switch. In the HIGH
VOLTAGE OFF mode the power supply’s fault and
interface circuits are still active.
WARNING
WARNING
