Gr V-20M, V-20HM, V-20H, V-20 Instruction Manual
OPERATING
INSTRUCTIONS
Know
your
CAUTION : TO
THE
BAKELITE SHAFT SLEEVE
NOT
SET
--
MAX
UP
WITH
/i
5
DEPTH
..
.....,
1
SCREWS
1-+--
VARIAC!
AVOID
COLLAPSE
RADIATOR
SHAFT
APPROX
REMOVED
BEHIND
"-
__
SET
4..2
_!_6_
V-20
Pronounced
These
OF
fXJ
PANEL
instructions
MECHANICAL SPECIFICATIONS
SERIES
"VARY-ACK".
are
to
help
DOTTED
CF
V-20M
AND V-20H
OUTLINE
,___ _ _
I------+-
VARIAC®
Tracie
Mark Registered
you
get
LINE
AND V-
INDICATES
20HM
ARE
AS
--3.,----
- 74APPROX
better
PER SOLID
results
OUTLINE
V-20
7
i!:!!AP._,_'P.-'-"'RO""'~
with
"--
·
---
less
;-It!
trouble.
NET WEIGHTS
TYPE
V-20
TYPE V-20H
TYPE
V-20M
TYPE V-20HM
FOR
BEST
DIALS
Dials
2llbs.,
20
22 lbs., 4 oz.
2llbs.
4 oz.
lbs.
The
Underwriters'
the
acceptability
Type
V-20
are
Dials
for
are
two-sided
increase
mitting
Variac
Laboratories,
of
fixed
is
the
combination
COOLING OPERATE
normally
line
voltage
to
being
the
dial
listed
Inc.
PANEL
supplied
permit
rule
and
under
for
installation
has
the
been
for
limit
operation
either
in
both
moving
pointer
Re-Examination
in
other
determined
overvoltage
are
dial
or
pointer
cases.
Pointers
operation
Service
equipment
by
the
Laboratories.
operation,
available
rotation,
are
for
of
the
where
Figures
on
special
clockwise
provided
panel
mounting.
4,
on
-MOUNTED UNITS WITHOUT CASE!
6, 7,
order.
knobs,
and
9.
Dials
voltage
per-
V-20
TYPES
20
26
Rated Output Amperes 8 4 8
Max. Output Amperes
115
50,60
0-135
27
3
*The
V-20H
for
230 volts,
The
largely,
I.
For
may
60
current
on
the
general
use
control a variety
safest
to
stay
within
If
fuse
protection
2.
For
particular
fixed,
omitted
line
voltage.
with
decreasing
safe
limits.
3.
For
he
exceeded.
should
For
4.
(as
in
rated
in
Figure
rated
known
continuous
be
motor
current
current
load,
(Figures 5 and
When
For
derated
services
starting,
may
3.
At
he
ELECTRICAL
Input Volts
Cycles Per Second
Output
No
be
used
cycles,
that
to
laboratory
of
is
applicat
the
output
24-hour-per-day
ambient
according
where
be
no
drawn
Volts
Load Watts
KVA
on
ll5
output
may
volts,
he
the
but
which
use,
loads
und
rated
curre
desire
d, fuse
ion
s,
and
where
8),
maximum
Variac
voltage
temperatures
to
an
initial
incandescent
exceeded
time should
from
the
SPECIFICATIONS
V-20H
10.4 10.4
230
50,60 50,60
0-270
27
2.4
25
cycles.
volts will
drawn
Variac
where
er
experimental
nt
at
all
for
where
the
is
so
connected,
will
always
duty,
the
curve
surge
h•mp
on a time-current
more
Variac.
Connections
be
one-half 230-volt connection.
from
a .
is
put.
the
Variac
times
and
rated
current.
the
Variac
overvoltage
current
may
the
keep
the
rated
current
above
50°C.,
of
Figure
current
control,
than
ten
TYPES
115
0-270
27 27
should
Variac
is
to
he
conditions,
for
all
is
used with
conn
ect
he dra
current
curr
ent
should
the
2.
may
he
etc.),
the
basis
as
times
10
..
4
115
25*
0-135
1.2
be
as
depends,
used
to
it
settings.
ion
wn
at
fall-off
within
not
Variac
expected
Variac
depicted
(1000%)
is
is
100
90
80
"""
"
1'--.
~'-...
'\.
"'
\.
80
17
IZ
6
\
1\
\
90
194
4 HOUR5-1001.
j
1,000
Deg.
C
Deg
. F
IO,OC>O
30
20
10
0
1000
900
a
BOO
700
600
.J
~
500
a::
0
400
z
0300
..
200
100
0
.01
40
30
104
86
~'ovERLOA
\
\
0.1
D
\
50
122
AMBIENT
Figure 2
LIMIT
1'\.
1""-
1
Figure 3
TEMPERATURE
2510
TIME
60
140
1/4
HOUR-150~
I
-
112
-.....
IN
MINUTES
70
15
8
I
HOUR-133'r.
I I I
I·LHil'!~
100
TABLE
MOUNTING
PANEL
MOUNTING
RECOMMENDED
CONNECTIONS
are
diagrammed
in
Figures 4 to 9 inclusive.
FIGURE
6
0H
{LINE:
II~
volts,
50
to
V•2
~--
1 I 2
I
I
LOAD: 0-270 volts
-
60
I
I
I
I
I
I
6 7 I
L _
________
j
TABLE
MOUNTING
cycles
PANEL
MOUNTING
*If
ground
Figure 7
is
necessary,
common
line-load
Figure 8
terminal
must
connect
to
Figure 9
ground
side
of
line.
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