EVA
Manual
7
118144
‐
001
REV.
A
Chapter
3
EVA
HIGH
VOLTAGE
POWER
SUPPLY
OPERATING
INSTRUCTIONS
3.1
Operation
WARNING
THIS
EQUIPMENT
GENERATES
DANGEROUS
VOLTAGES
THAT
MAY
BE
FATAL.
PROPER
GROUNDING
OF
ALL
HIGH
VOLTAGE
EQUIPMENT
IS
ESSENTIAL.
WARNING
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
‘G’
IS
REACHED.
FAILURE
TO
FOLLOW
THESE
PROCEDURES
MAY
VOID
THE
WARRANTY.
A)
Insure
that
the
front
panel
CONTROL
POWER
ON
switch
is
in
the
OFF
position
(switch
bezel
out).
B)
Check
the
input
voltage
rating
on
the
rear
panel
identification
tag
of
the
supply
and
make
certain
that
this
is
the
rating
of
the
available
power
source.
C)
PROPER
GROUNDING
TECHNIQUE
:
The
chassis
of
the
high
voltage
power
supply
must
be
adequately
grounded,
preferably
to
the
local
“system
ground”
(cold
water
pipe
ground,
electrical
conduit
ground,
copper
ground
rod,
etc.)
using
a
heavy
gauge
copper
wire
securely
connecting
to
the
¼
‐
20
ground
stud
on
the
rear
panel
of
the
unit.
See
Figure
3.1
for
a
typical
operating
setup.
A
heavy
gauge
user
provided
“load
return”
wire
must
be
connected
from
the
low
end
of
the
load
back
to
the
¼
‐
20
ground
stud
on
the
rear
panel
of
the
power
supply.
Using
a
separate
external
ground
at
the
load
is
not
recommended.
A
six
foot
long,
captive,
three
or
four
wire,
unterminated
line
cord
is
provided
for
connecting
to
the
AC
supply.
For
three
phase
input:
BROWN,
BLACK
and
BLUE
wires
are
the
three
phase
inputs,
they
are
not
phase
dependent
and
can
be
connected
in
any
manner.
For
single
phase
input:
BROWN
is
line
and
BLUE
is
neutral.
The
GREEN/YELLOW
or
GREEN
wire
is
for
chassis
safety
ground
connection.
This
is
a
safety
ground
connection
and
is
NOT
adequate
for
system
grounding
purposes.
Attach
the
high
voltage
output
cable
to
the
load.
D)
Plug
the
high
voltage
output
cable
provided
with
the
unit
into
the
rear
of
the
supply
and
secure
appropriately.
E)
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.
F)
For
initial
turn
‐
on,
rotate
the
front
panel
KILOVOLT
control
potentiometer
fully
counter
‐
clockwise
to
the
zero
voltage
position.
G)
The
input
power
cable
may
now
be
connected
to
the
AC
power
line.
H)
Depress
the
CONTROL
POWER
ON
switch.
The
amber
light
inside
the
switch
should
light
up.
The
unit
is
now
in
the
HIGH
VOLTAGE
OFF
mode.
The
HIGH
VOLTAGE
OFF
light
should
be
lit.
I)
Depress
and
hold
the
green
HIGH
VOLTAGE
OFF
switch.
The
front
panel
meters
will
now
read
the
preset
value
of
the
KILOVOLT
control
dial
and
the
MILLAMPERES
internal
preset
value
(100%
rated
current).
To
preset
the
desired
level
of
the
current
and
voltage
during
operation,
depress
and
hold
the
green
HIGH
VOLTAGE
OFF
switch
and
rotate
the
control
dial
while
noting
its
corresponding
meter
reading.
Release
the
HIGH
VOLTAGE
OFF
switch.
NOTE
:
No
actual
high
voltage
is
being
produced
at
this
time.
J)
Depress
the
red
HIGH
VOLTAGE
ON
switch.
The
lamps
inside
the
switch
should
illuminate
and
the
output
will
slow
start
up
to
the
preset
level
output
voltage
and/or
output
current.
NOTE
:
The
EVA
series
is
equipped
with
a
slow
start
circuit
that
ramps
the
output
up
to
its
maximum
setting
