TENMA 72-8340 User Manual

Laboratory Switch Mode

Power Supply Series

Instruction Manual

Model
72-8340
72-8345
72-8350

1.0 ~ 60VDC 0 ~ 1.6A

1.0 ~ 36VDC 0 ~ 3A

1.0 ~ 20VDC 0 ~ 5A

Copyright 2008, all rights reserved

Tenma Test Equipment®

www.tenma.com

Keep this manual in a safe place for quick reference at all times.

This manual contains important safety and operation instructions for correct use of the power supply. Read through the manual and pay
special
attention to the markings and labels of this unit and equipment to be connected.

Pay special attention to these two types of notices used in this manual.

WARNING

Failure to observe this warning may cause injury to persons and damage to power supply or connected equipment

CAUTION

Failure to observe this warning may result in damage to equipment and improper functioning of the power supply.

WARNING:

1. Do not use this power supply near water.

2. Do not operate or touch this power supply with wet hands.

3. Do not open the casing of the power supply when it is connected to AC power source.

4. Refer all servicing to qualified service personnel only.

5. Before replacing the AC fuse first determine and correct the cause or the blown fuse. Replace the AC fuse with the same type and

rating as the original fuse.

CAUTION:

1. Use only a properly grounded AC power source.

2. This unit is for indoor use only.

3. Do not operate or place this unit in a humid or dusty environment, in direct sunlight or near any heat source.

4. Before plugging into AC power source, check with the rating label at the back of the unit.

5. Do not block ventilation openings on the unit.

6. This unit must be used within the specified rating. Continuous excessive loading may cause damage to the power supply.

7. The AC power cord must be at least 18AWG, and not exceed 3m in length.

8. Replacement fuse: T3AL250V (3A Time-Lag)

Environmental condition requirements:

1. 10-80% R.H.

2. Altitude up to 2000m

3. Installation category: CAT 2

4. Pollution degree: 2

5. Maximum supply voltage fluctuation: ±10% of specified operating voltage.

Introduction

This precision series of switch mode laboratory DC power supplies are ideal for test, measurement and service applications where tight
voltage and current regulation are critical. Highly efficient switch mode design delivers outstanding performance from an extremely
compact footprint. Unique separate output ON/OFF control allows voltage and current setting, with the supply output turned off.

Features:

• Backlit four digit LCD display

• Simultaneous display of voltage and current

• Auto selecting constant voltage (CV) and constant current (CC) modes

• Ultra quiet convection cooling

• Short circuit, overload, over voltage and thermal protection

• 84% efficiency at maximum output

• RoHs compliant