Global Specialties 1335 User manual

1335
& 1337
E C Povver Supply
1335 REGULATED
DCPOWER
SUPPLY
ON
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Instruction
ManuaI
GLOBAL
70 FultonTerrace. New Haven, CT 06512
B.OO-572-1O28
. FAX [phone]
www. g Iobal s
peci alties. co m
7l9B B0-01
-0825

7335
E C Povver Supply
Instruction
70 Fulton Terrace . New Haven CT 065i2
aOO-
572- 1O2A . FAX 2O3-46a- 0060
www-g loba Ispec ia lties -cotr.l
ManuaI
GLOBALWre
7tqg B0-01-0825

TABLE OF G,o.NTEATTS
GENERAL
INFORMATION ...
page
2
SPECIFICATIONS.. ......
page
3
LOCATION
ANDDESCRIPTION
oFOPERATING
CONTROLS..
page
6
INSTALLATION ....
page
7
OPERATING
INSTRUCTIONS ......
page
9
POWER
SUPPLY
OPERATION. ..page
12
OPERATING
PRECAUTIONS
.. ....
page
13
CASE
DISASSEMBLY
AND
ASSEMBLY
... .page
14
MAINTENANCE
ANDRECALIBRATION ....
page
14
SERVICEAND
WARRANTYINFORMATION .....
page
15
PART
LIST ,...Page
10
SCHEMATIC .Page
21
L'sT OF ILLUSTF|ATTOruS
FIGURE
1.Location
ofoperating
controls .....Page
5

GEI'EF|AL TNFORMATION
DEscRIPTIo.N
The
1335
Power
Supply
is
ahigh
performance
singte
output
DC
power
supply
for
industrial
andlaboratory
use.
Performance
with
economy
have
successfully
been
combined
to
provide
acompact,
fully
solid
state
instrument.
The
output
is
continuously
variable
from
oto
32v
and
can
supply
3A
max,
and
can
beadjusted
continuously
throughout
the
output
range.
The
front
panel
CURRENT
control
can
be
used
to
establish
the
outfut
current
limit(overload
or
short
circuit).
When
the
supply
is
used
as
a
constant
voltage
source
the
VOLTAGE
controls
can
be
used
to
limit
the
output
voltage.
When
the
unitisused
as
a constant
current
source,
CURRENT
controls
can
beused
tolimit
the
output
current.The
unitwill
automatically
cross
overfrom
constant
voltage
tocurrent
mode
and
vice-versa,
if
the
output
current
orvoltage
exceeds
these
preset
limits.
Output
voltage
and
current
are
continuously
monitored
on
two
front
panel
meters.
The
load
terminals
are
provided
onthe
front
panel.
Either
the
positive
or
negative
output
terminal
may
be
grounded
orthe
power
supply
can
be
operated
floating
atupto
amaximum
oft3ooVDC
above
ground.
All
the
outputs
arefloating
i.e.
neither
the
output
positive
terminal
nor
the
negative
terminal
(nor
any
point
within
theregulator
circuitry)
is
con-
nected
to
ground.
The
power
supply
is
designed
to
operate
in
ambient
temperature
of
up
to40"C
and
full
outputmay
bedrawn
continuouslyprovided
free
air
circulation
is
allowed.
The
unitworks
from
mains
supply
of11SVAC,
47-63
Hz.
2GLOBAL*ECALTTT
INSTRUMENTS

SPEc.IFTc.AT'OruS
Detailed
specifications
of
the
power
supply
are
given
in
the
following
table.
Output
Voltage: 0-32V
DC
continuously
variable
with
coarse
and
fine
voltage
controls.
Load
Current: 0-3Amp
max.,
continuously
variable
with
coarse
andfine
controls.
cOA'STANT VOLTAGE MODE REGULATION
Line: Less
than*0.01"/"
+2mv
for
* 10%
change
in
rine
voltage.
Load: Less
than
t0.01
"/o
+ZmV
for
load
change
from
zero
tofull
load.
Ripple
&Noise: Less
than
ImV
rms
max
.(2oHz-20
MHz)
cONSTANT CURRENT MODE REGIJLATION
Line: Less
than
t0.1"/o
+250pA
for
* ro%
change
in
rine
voltage.
Load: Less
thant0.1"/"
+250
pA
for
change
in
output
volt-
agefrom
0volts
tomaximum
output
voltage.
Ripple
& Noise: 0.04%
rms.(2.0
mA)
Output
Polarity: Floating
w.r.t.
ground.
Overload
Protection:
Automatic
overload
and
short
circuit
protection.
Transient
Response:
1OOprsecs
towithin
lOmV
of
set
output
voltage
for
load
change
from
10%
to
9O%.
GLOBAL*ECALTTre .)
U
INSTRUMENTS

STABILITY
Total
drift
within
I hours: t0.1"/"
+2.SmV
inconstant
afterwarm
up
under
voltage
mode.
Constantline
load
&temp:
t0.5"/"
+2mA
in
constant
current
mode.
Panel
Meters: Digital
panel
meters
(marked
Vfor
voltmeter
and
A for
ammeter)
are
provided
with
an
accuracy
of
*3counts.
ModeIndication: Respective
LEDlights
upwhen
the
unitisworking
in
CVor
CCmode.
Output
Controls: Singleturn
coarse
andfine
voltage
and
current
controls
are
provided
onthe
front
panel.
OperatingTemp: 0-40'C.
fnput
Voltage: 11SVAC,
* 10"h,47-63H2
single
phase
Dimensions: 230mm(W)
x255mm(D)
x133mm(H).
Weight: 6.70
Kg(approx.)
GLOBAL *ECALTIES
4INSTRUMI:N'TS

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qGLOE'AL *ECALT'ES
INSTRUMENI'S

LOCATION ANE' DESG|FITPTIo|N OF
oPEFATING c'o.NTFro|Ls,
ln
order
to
use
the
full
capabilities
ofthe
1335,
itis
highly
recommended
that
the
user
become
familiar
with
the
controls
associated
with
this
in-
strument.(See
Figure
1)
1- Power
oN/oFF
switch. 7- current
Fine
control
clock-
wise
rotation
increases
vari_
2- supply
LED
Display.
Dispray able
output
current
in cc
Voltage
0to
32VDCmode mode.
3- Supply
LED
Display.
Disptays
current
0to
3AMP. B- CV
LED
Constant
Voltage
In-
dication
4- Variable
coarse
voltage
con- g- cc LED
constant
current
trol. clockwise
rotation
in- Mode
Indication
creases
variable
outputvolt-
age
in
CV
mode. 10-
Output
terminals
Red
terminal
ts
output
(+)ve.
Black
termi_
5- Variable
fine
voltage
control. nal
is
output
(-)ve.
Clockwise
rotation
increases
variable
output
voltage
in
cV 11-
Ground
terminal.
mode.
6- Current
coarse
Control.
Clock-
wise
rotation
increases
vari-
able
output
current
in
cc
mode.
GLOBAL *ECALTTES
6INS'fRTJMI]NIS

II'STALLATIOru
INITIAL 'NSPECTION
As
soon
as
the
power
supplyunitis
unpacked
inspect
for
any
damage
that
mayhave
occurred
during
transit.
Save
all
packing
material
until
inspection
is
completed.lf
anydamage
isfound,
notify
the
carriers
im-
mediately.
Ourauthorizedrepresentatives
should
also
benotified.
PHYSICAL CHECK
This
check
should
confirmthatthere
areno
broken
knobs
or
connec-
tors,
thatthe
cabinet
and
panel
surfaces
arefree
of
dents
andscratches
andthemeters
are
not
scratched
and
cracked.
ELECTRICAL CHECK
The
power
supplyunitshould
bechecked
against
electrical
specifica-
tions.Anin-cabinet
performance
checkwillverify
proper
operation.
'NSTALLATION DATA
The
power
supplyunit
is
shippedready
for
bench
operation.
ltisneces-
saryonlyto
connecttheunitto
arated source
of
power
andit
is
ready
for
operation.
LOCATION
The
power
supply
unit
isnaturally
cooled.
Sufficient
spaceshould
be
kept
aroundtheunitwhilein
operation,sothatheat
sinksdonotremain
in
confined
space
or
close
to
anotherheating
source.The
ambient
temperature
of
the
area
aroundthe
unit
should
be
less
than40"C.
INPUT POWER REQUIREMENTS
The
power
supplyunitmaybeoperated
continuously
frominputvoltage
of115volts
47Io
63Hz
power
source.
GLOBAL*ECALT'6 7
INSTRUMENTS

X
To
ensure
safe
shipment
ofthe
power
supply
unit,
it
is
recommended
that
the
package
designed
for
the
unit
be
used.
The
original
packaging
material
isreusable.
Be
sure
to
attach
atag
to
the
unit
specitying
the
owner,
and
the
fault
observed
with
abrief
description.
See
page
15
for
service
information.
REMOVING COVER
The
top
cover
isretained
in
place
by
6self
tapping
screws
&
two
handle
mounting
screws.
To
remove
cover,
proceed
as
follows:
a)Remove
the
chrome-plated
handle
caps.
b)
Remove
the
handle
mounting
screws.
c)Remove
the
selftapping
screws
on
sides.
d)Lift
the
coverfrom
rear
side,
slide
backwards
&
pull.
GLOBAL *ECIALT'ES
INSI-f]TJMEN'TS