Extech Instruments 382275 User Manual page 2

Introduction
Congratulations on your purchase of the Extech 382275 (110V) or 382276 (220V) Single Output
Laboratory Grade DC Power Supply.
The dual action (coarse/fine tune) rotary encoder allows for quick and precise voltage and
current level adjustments. Setting, changing, and checking the current limit level can be
performed easily without sparking the output poles.
The remote control feature allows the user to remotely perform the following tasks:
 Output power ON/OFF
 Voltage and Current Level Adjustments
The three user‐presets facilitate quick access to frequently used voltage and current settings.
This power supply is shipped fully tested and calibrated and, with proper use, will provide years
of reliable service.
Safety
WARNING
•
Do not use this power supply with electric motors or for charging purposes on
electroplating equipment or similar devices. Return EMF and voltage transients generated
by electric motors can damage this power supply. This power supply was designed for use
on electronic equipment only and not intended for use on electrical equipment of any
kind.
•
Do not use this power supply near water.
•
Do not operate or touch this power supply with wet hands.
•
Do not open the casing of the power supply when it is connected to AC power.
•
Refer all servicing to qualified service personnel only.
•
Before replacing the fuse, identify and fix any problems.
•
Replace the fuse with a fuse of the specified type and rating.
CAUTION
•
Use a grounded 3 pin AC source.
•
This unit is intended for indoor use only.
•
Do not operate or place this unit in direct sunlight or in a humid location
•
Avoid environments where dust or dirt can enter the power supply casing.
•
Do not place the power supply near a heat source.
•
Before plugging into local AC mains, check the rating label at the back of the unit for 110V or 220V
operation. The model 382275 can be powered by 110V only. The model 382276 can be powered by
220V only.
•
Do not block the ventilation openings of the unit.
•
This unit must be used within the specified rating; excessive continuous loading may cause damage to
the power supply.
•
The gauge size of the input power cable must be at least 3 "(0.75mm) and the total length of power
cable must not exceed 118" (3m)
2 382275/6-EU-EN v4.3 3/14