382202 - Power Supply Extech - Free user manual and instructions

Product Type	DC Power Supply
Brand	Extech
Model	382202
Input Voltage	100-240 VAC, 50/60 Hz
Output Voltage Range	0-30 V
Output Current Range	0-5 A
Display	Dual LED display (voltage and current)
Resolution	10 mV / 10 mA
Protection	Overload, short circuit, over-temperature
Cooling	Fan cooled
Dimensions (W x H x D)	200 x 150 x 300 mm
Weight	2.5 kg
Output Terminals	Binding posts (red/black)
Operating Temperature	0-40 °C
Storage Temperature	-20-60 °C
Accessories Included	Power cord, user manual
Safety Compliance	CE, RoHS
Maintenance	Keep vents clean; disconnect power before cleaning

Frequently Asked Questions - 382202 Extech

How do I connect the power supply to a circuit?

Connect the red binding post to the positive lead and the black binding post to the negative lead of your circuit. Ensure the output is set to 0V before connecting.

What is the maximum output current?

The Extech 382202 can deliver up to 5A continuously. Do not exceed this limit to avoid damage.

Can I use this power supply for charging batteries?

Yes, but you must set the voltage and current limits appropriately for the battery type. Use a constant-current mode initially.

The display shows 'OL' or error. What does it mean?

'OL' typically indicates overload or short circuit. Check your load and reduce the current. If persists, turn off and inspect connections.

How to adjust voltage and current?

Use the voltage and current knobs on the front panel. The current must be set under load for accurate limiting.

Does the power supply have reverse polarity protection?

It does not have built-in reverse polarity protection. Always double-check connections before powering on.

What should I do if the fan is noisy?

Check if the fan vents are blocked. Clean dust with compressed air. If noise persists, the fan may need replacement.

Can I connect two units in series for higher voltage?

Yes, you can connect the outputs in series to get up to 60V. Ensure each unit is isolated and set to the same current limit.

How do I clean the power supply?

Disconnect from mains. Use a soft dry cloth. Do not use liquids or solvents. Clean ventilation slots with a brush.

What is the warranty period?

Extech typically offers a 1-year limited warranty. Check your specific purchase for details.

USER MANUAL 382202 Extech

DC Regulated Power Supplies

Model 382200 (1 Amp) and 382202 (3 Amp)

Introduction

Congratulations on your purchase of the Extech DC Regulated Power Supply. These units are solid state, compact, regulated supplies suitable for many applications including bench testing, field service, hobby and telecommunication equipment use. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service. . Please visit the Extech Instruments website (www.extech.com) to check for the latest version of this User Guide and to register this product.

Specifications

Model 382200	382202
Display	Dual
Display Accuracy (V) ±(1.5%rdg +5D)
Display Accuracy (A) ±(2.0%rdg + 5D)
Voltage Output, DC 30.0 Volts 18.0 Volts
Current Output, DC 0 – 1.00 Amp 0 – 3.00 Amps
Ripple and Noise <0.5mV/<3mA
Line Regulation < 0.01% + 3mV/< 0.2% + 3mA
Load Regulation < 0.01% + 2mV/< 0.2% + 3mA
Power	115/230VAC
Dimensions 9.4 x 4.25 x 6" (240 x 108 x 154mm) (W x H x D)
Weight 4.4lbs. (2 kg)	6.6lbs. (3kg)

Meter Description

1. Voltage display
2. Current display
3. Negative (-) output terminal
4. Positive (+) output terminal
5. Illuminated On/Off switch
6. Current adjustment
7. Voltage adjustment

CAUTION: Verify that the AC voltage setting and fuse rating matches the power source being used BEFORE applying power to the instruments. Do not connect to a voltage source that is greater.

CAUTION: Limit full load operation (>25watts for the 382200 and >45watts for the 382202) to 15 minutes continuous operation. Always allow a cool down period after full load operation.

1. The Power Supply must be powered using the rated line voltage within +10%.
2. Before turning the power supply ON, remove any load and set the Voltage and Current Adjustment Knobs to their full counter-clockwise positions.
3. Use the Current and Voltage Adjustment knobs for setting variable Current and Voltage output signals respectively.
4. The LCD displays will indicate actual current and voltage outputs.
5. Keep the meter's cooling vents (top and sides) clear of obstacles to prevent overheating.

Current Limit

To avoid having the load draw too much current, a current limit can be set as follows:

• With the voltage and current output adjustments set fully off, carefully short the positive and negative output terminals together.
• Turn the Output Voltage knob clockwise to the 25% position (approx.).
• Adjust the Output Current knob clockwise until the desired current level is displayed.
• Turn the Output Voltage knob counter-clockwise (current display will go to 0.00).
• Connect a load to the output terminals and adjust the voltage to the desired level.

Fuse Replacement

The fuse receptacle is located on the back of the unit next to the power cable input. Each unit comes with one 115V 2A fuse installed in the unit. Three spare fuses are included, a second 115V 2A fuse, and two 230V 1A fuses. See below for the fuse specifications.

115V		230V
382200	2A		1A
382202	2A		1A

230V Operation

1. Replace the 2A (115V) fuse with a 1A (230V) fuse.
2. Toggle the switch located on the rear of the unit from 115V to 230V.
3. Use a power cord that matches the outlet for the country in question.

Warranty

FLIR Systems, Inc. warrants this Extech Instruments brand device to be free of defects in parts and workmanship for one year from date of shipment (a six month limited warranty applies to sensors and cables). If it should become necessary to return the instrument for service during or beyond the warranty period, contact the Customer Service Department for authorization. Visit the website www.extech.com for contact information. A Return Authorization (RA) number must be issued before any product is returned. The sender is responsible for shipping charges, freight, insurance and proper packaging to prevent damage in transit. This warranty does not apply to defects resulting from action of the user such as misuse, improper wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification. FLIR Systems, Inc. specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct, indirect, incidental or consequential damages. FLIR's total liability is limited to repair or replacement of the product. The warranty set forth above is inclusive and no other warranty, whether written or oral, is expressed or implied.

Calibration, Repair, and Customer Care Services

FLIR Systems, Inc. offers repair and calibration services for the Extech Instruments products we sell. NIST certification for most products is also provided. Call the Customer Service Department for information on calibration services available for this product. Annual calibrations should be performed to verify meter performance and accuracy. Technical support and general customer service is also provided, refer to the contact information provided below.

Support Lines: U.S. [phone]; International: [phone]

Technical Support: Option 3; E-mail: [e-mail]

Repair & Returns: Option 4; E-mail: [e-mail]

Product specifications are subject to change without notice

Please visit our website for the most up-to-date information

www.extech.com

FLIR Commercial Systems, Inc., 9 Townsend West, Nashua, NH 03063 USA

ISO 9001 Certified

Copyright © 2014-2015 FLIR Systems, Inc.

All rights reserved including the right of reproduction in whole or in part in any form

www.extech.com