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Operating instruction lab
power supply unit
0 ... 32 V / 0 ... 3,0 A
type 2223.2
The intended application of the power supply unit covers:
- link and operation of low-voltage consumers with an operating voltage between 0 and 32 VDC. The power
input of the consumer may not exceed 3,0 A.
Note! Absolutely read!
- Read this guidance exactly. With damage, which is caused by neglect of the guidance, the warranty claim
goes out. For damages we do not take over adhesion.
Table of contents
1 introduction of
2 safety notes (mains connection and protection change) of
3 controls
4 line-up
5 technical data
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1. introduction
this power supply unit is universally applicable with its infinitely variable adjustment possibilities of voltage and
current for school, occupation, hobby etc.. An electronic current limiting protects the power supply unit against
overloading. Output voltage and - current are electronically stabilized and infinitely variable adjustable. Thus the
electronic restraint current can as adjustable Current limiting to be used, in order to protect consumers against a
too high power input. In the case of an overloading the output voltage is then lowered accordingly (in the case of
short-circuit on close 0V). With removal of the overload the output voltage adjusted before resets itself
automatically. The respective operating point - voltage - (u) - or restraint current (i) - is displayed by one red
LED each. The adjusted values are readable over 2 LCD displays or analog displays each. The voltage or
current adjustment is made by one double button each (rough- fine). Additionally a change .
2. Safety notes
2,1 the power s upply unit is in safety class s ystem I as well as in accordanc e with VDE 0411 and VDE 0805
(EN60950) structured. The supply transformer is structured and with 3,75 kVeff is primary secondarily
checked according t o DIN VDE 05 51 as saf ety ins ulating trans form er. It is radio-screened in accordance with
VDE 0875T11 curve B. Es is equipped with a VDE checked main with protective grounding and may
therefore only to 230-V-Wechselspannungsnetzen with protective grounding be operated or attached.
2,2 it is to be made certain that prot ective grounding (yellow/green) is interrupted neither in the main nor in the
device or in the net work, since with interrupted protective grounding mor tal danger exists. It is to be m ade
certain further that the isolation is damaged nor destroyed neither.
2,3 power supply units do not belong into child hands!
2,4 in commercial mechanism s is to be considered the rules f or the prevention of accidents of the federation of
the commercial Professional association for electrical system and resources.
2,5 in schools, training facilities, hobby and self-help workshops. is by hand possible for
2,6 when opening covers or removing from sections, except if this, can live sections be opened. Also interface can
be live. B efore an alignm ent, maintenanc e, a repair or an exc hange of sec tions the device m ust be separate
from all voltage su pplies, if openi ng of the dev ice is necessar y. If thereafter an alignm ent, maintenance or a
repair at the opened device under voltage are inevitable, may take place only by means of a specialist, who is
familiar with the associated dangers or the relevant regulations for it.
2,7 condensers in the device can be still loaded, even if the device were separated from all voltage supplies.
2,8 it is to be guarantee d that onl y protecti ons of the indicated t ype and the indic ated call strom str aerke are used
as back-up. The us e of repaired protections or brid gi n g th e fuse holder is ill ega l. T he dev ic e is o verload-proof
and short-circuit-protected. When bur ning the input protection through a seri ous error is therefore present,
which must be eliminated by a specialist, before the new intact protection can be used by this specialist.
2,9 switching it your power supply unit never equivalent if it is brought by a cold into a warm space. The
condensation develo ping thereby can destroy your d evice under unfavorable c ircumstances. Let the devic e
unein switched to room temperature come. carrying of metallic or conductive decoration is forbidden to
2,10 with work with power supply units such as chains, bracelets, rings or the like.
2,11 power supply units are not certified for application at humans or animals.
2,12 during the series connectio n of t he outp uts one or s everal p o wer s upp ly units is produced lethal volta g es (>35
VDC).
2,13 louvers of power supply units may not be taken off! The devices are on hard to place with difficulty
inflammable docum ents so that air c an occur the devic es unhindere d. The cooli ng of the devices takes plac e
predominantly via convection.
2,14 power supply units and the attached consum ers may not be operated unsupervised. Measures are to be
taken to the protection and the pr otect ion of the att ach ed consum er s in relation to eff ects of the power sup pl y
units (e.g. overvoltages, failure of the power supply unit) and the effects and dangers outgoing from the
consumers themselves (e.g. illegally high power input). Note! Sensitive consumers must be protected
additionally by external measures against destruction!
2,15 in the event of an error can deliver power supply units voltages over 50 V DC voltage, f rom which dangers
proceed, also then if the indicated output voltages of the devices lower is situated.
2,16 with work under voltage for it expressly certified tools may be only used.
2,17 the outputs of the po wer supply units (exit hub/clamps) and to it att ached lines must be protected against
direct contact. In addition t he used lines must sufficient isolation or tensi on strain possess and the contact
points be contact-voltage-proof (safety sockets).
2,18 shifting metallicall y bright lines and contac ts is to be avoided. All thes e places are by suitabl e to take and to
protect thus against direct contact with difficulty inflammable insulants or other measures off. Also the
electrically leading secti ons of the attached cons umers are to be protecte d by appropriate m easures against
direct contact.
2,19 if to assume it is th at a safe operation is no longer possible, then is the device o ut of operation to set and
against unintentional oper ation protect. I t is to be assu m ed that a saf e operat ion i s no longer pos sible, if - the
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device or the mains cable visi ble damages indica tes, - the device any longer d oes not operate, - after longer
power switches
rough and fine automatic controller vo lta ge
rough and fine automatic controller current
8. LED constant current
storage under unfavorable conditions, - after heavy transport stresses.
3. Controls
1.
2.
3.
4. LCD display voltage
LCD display current
5.
exit hubs DC
6.
LED constant voltage
7.
4. Line-up
a) link connecting it the GND contact - power supply plugs of the power supply unit with a connector 230V/50Hz
/60Hz. paying attention it when connecting a consumer absolutely to the fact that this is attached in the not
switched on status. A switched on consumer can lead with the link to the output terminals of the power supply
unit to a sparking at the connecting terminals, which can damage again the female connectors or the attached
lines and/or their clamps. Switch the power supply unit on over the power switch.
Note! With longer operation with max. current consumption (ä) or in the case of short-circuit the radiator box in the
power supply unit becomes very warm. Caution! Burn danger! Absolutely pay attention therefore to a sufficient
ventilation of the power supply unit and never cover them the ventilation slots on the device waiters - or de vice
lower surface, in order to avoid possible damage.
b) Voltage adjustment
Turn first the rough reset knob for the current limiting a little to the right (in the clockwise direction), until the LED (=
light emitting diode) for current limiting goes out. In the same instant the LED for the voltage adjustment begins to
light up. Now you can adjust the desired output voltage.
c) Adjustment of the current
limiting shooting it the output terminals with switched off power supply unit briefly. Switch the network on -. The
display for output current displays, depending upon adjustment of the rough or fine reset knob for current limiting, a
value. Stop the current limiting, i.e. the " maximum stream ", with which the power supply unit is to limit. After
adjustment they open the short-circuit with switched off power supply unit, since otherwise an outline spark can
develop.
Note! Absolutely consider the safety notes with paragraph 2 of this guidance.
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operating voltage:
:
230 VAC +6/-10%
frequency:
:
50 to 60 Hz
power input:
:
max. 0,6A
output voltage:
:
ca. 0,1 .... 32 V
output current:
:
ca. 0,1 .... 3,0 A
voltage stability with +6/ 10% mains
:
ca.0,05 %
load compensating with 100% load
:
ca. 0,1%
current stability with +6 / -10 % mains
fluctuation:
:
ca. 0,05 %
load compensating with 100% load
change:
:
ca. 0,1%
remaining ripple with nominal load:
:
1mV
bzw. 2 mA
mains fuse:
:
800mAT
acting voltage display:
:
LCD with 3 digits weight:
current display:
:
LCD with 3 digits weight:
weight:
:
3,9 kg
dimensions (B x H x T):
:
180 x 120 x 220
operating temperature area:
:
+10 °C bis +35 °C
Air humidity:
:
max. 85 %
air pressure:
:
600 bis 1000 hPa
Technical data
fluctuation:
change:
site conditions
eff
eff
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