2
1. Introduction
This d.c. voltage regulator is an infinitely variable voltage source with high stability and low internal
resistance. The regulator can operate both as voltage stabilizer and as current stabilizer in dependence
on the load resistance. The manifold characteristics of the d.c. voltage regulator secure its application
everywhere where constant d.c. voltages with low internal resistance or constant direct current with high
internal resistance of the supply source are needed in research and development, production and
testing.
The output voltage and current will be shown via an analogue or digital instrument, dependent of the
Type. The current pre-set can be shown, even if the regulator is not in constant current mode, by
pressing the I-max button.
2. safety instructions
2.1
EC Declaration of Conformity
This power supply meets the intent of Directive 89/366/EEC for Electromagnetic Compatibility.
Compliance was demonstrated to the following specifications as listed in the Official Journal of the
European Communities:
EN 50081-1 Emissions:
EN 55022 Class B Radiated and Conducted Emissions
EN 60555-2 AC Power Line Harmonic Emissions
EN 50082-1 Immunity:
2.2
The power supply has been designed and tested in accordance with Safety Class I requirement of
IEC Publication 348, Safety Requirements for Electronic Measuring Apparatus.
2.3
This power supply is for only use on 230V/50Hz line voltage.
Make sure that the line has this
voltage.
2.4
Do not leave the power supply in uncontrolled conditions.
2.5
Plug off the line cable before you opening of the case. Changing fuses and modifying line cables to
local power must be done by qualified service personnel who are aware of the hazards involved. If
you suspect the supply has failed, review this manual to make sure you are operating it correctly. If
the supply still fails to operate properly, pack it securely (in its original container if available) and
forward it, postage paid, to the Address listened at the end of this Manual. Note that a repair must
be paid if the warranty time is over or if the supply shows signs of a unproper use. We assume NO
responsibility for damage in transit. Customer shall be responsible for paying all shipping charges,
duties, taxes, and any other charges for product returned to us.
2.6
Wait to use the supply until the supply has reached proper environmental conditions.
2.7
You must follow the appropriate safety guidelines for work with electricity.
2.8
This product is not authorized for use on humans or animals.
2.9
If two or more output terminals are connected in series hazardous voltages ( > 42V DC) will exist on
the outer terminals.
2.10
Do not cover the ventilation holes at the bottom and at the top. The unit can be operated on a
horizontal surface in a flat position. You must assure that there is at least two inch's clearance
around the unit. Some hot spots on the case can reach 90 °C.
