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When using an electrical appliance, basic precautions are required to always be 
followed, including the following:
Read all instructions before using DANGER - To reduce the risk of electric shock:
1.  This appliance can be used by children aged from 8 years and above and 
     persons with reduced physical, sensory or mental capabilities or lack of 
     experience and knowledge if they have been given supervision or instruction 
     concerning use of the appliance in a safe way and understand the hazards 
     involved. 
2.   Children are not allowed to play the machine.
3.   Cleaning and maintenance shall not be made by children without supervision.
4.   If the supply cord is damaged, it must be replaced by the  manufacturer, its 
     service agent or similarly qualified persons in order to avoid a hazard.
5.   Do not leave the appliance unattended when it is switched on.
6.   High voltage in machine, amateurs do not dismantle machine.
7.  People with defects in physical and mental or the one lack of using experience 
     is not supported to use the product unless under the professional person's 
     guide and instruction. Keep it far away from the children.

 

NOTED

1.   AC input: service voltage must match the machine input voltage.(AC 110V/
     220V)
2.   There must be sufficient space around the power source for heat dissipation.
3.   Output voltage overshoot limit: When switch on the power supply, output 
     voltage should be not exceed setting value.
4.   Do not use the product in environments where temperatures exceed 40°C.
5.   When charging the battery, do not reverse the positive and negative terminals 
     to avoid damage to the battery.
6.   This product is of a fan-less design, full power output should be at least 4 hours. 
     For longer continuous operation, please set the usage control rate under 80%, 
     otherwise an artificial early failure may be possible. When ordering the product, 
     please reserve the balance according to the actual operating current.

WARNING

This  DC  stabilized  switching  power  supply  is  designed  for  use  in  laboratories, 
schools,  production  lines,  and  electronic  repair.  It  has  a  small  size  and  is 
lightweight, which is very easy to transport and carry. It has high efficiency, high 
load capacity, and low noise and is superior to linear power supplies.

I.  Product Feature

Rated Working Condition and Machine Appearance

Input voltage

Frequency

Power

Working environment

Working environment humidity

Storage condition

Storage environment humidity

Machine dimension

Unit weight

AC 110V / AC 220V optional

50Hz/60Hz

194W

-10°C~40°C

<90%

-10°C~40°C

<80%

L282xW125xH156mm ±5mm

2.3kg  ±50g

0-30V

≤0.01% +2mV

≤0.2% +2mV

Digital display of 1% ±1 characters

<0.3% Vrms

≤200PPM/°C

0-5A

≤0.1% +3mA

≤0.02% +mA

<1% Vrms

Digital display of 1% ±1 characters

II. Parameters

Regulation Voltage

Output voltage

Voltage stability

Load stability

Voltage display precision

Ripple noise

Temperature coefficient

Output current

Load stability

Current stability

Ripple noise

Current display precise

Regulation State

1

2

Summary of Contents for 305D IV

Page 1: ...er supply Please read the user guide thoroughly before using and keep it in a safe place for future reference Statement The company reserves the right to improve and upgrade products product specifications and design are subject to change without notice 305D English IV INSTRUCTION MANUAL ...

Page 2: ...ge should be not exceed setting value 4 Do not use the product in environments where temperatures exceed 40 C 5 When charging the battery do not reverse the positive and negative terminals to avoid damage to the battery 6 This product is of a fan less design full power output should be at least 4 hours For longer continuous operation please set the usage control rate under 80 otherwise an artificia...

Page 3: ...erminal it can reduce the output ripple of power IV Usage Instruction Operation 1 Firstly adjust voltage coarse and fine knob to the voltage value between 2 to 5V current coarse and fine adjustment knob is not 0 2 And then adjust current coarse and fine knob to 0 Anti clockwise to the end 3 Connect output terminal and with wire 4 Then adjust the current coarse and fine knob to set the working voltage ...

Page 4: ...y we provide a lifetime warranty service free of labor costs charge only spare parts costs 4 Failure to present warranty card during warranty period the company will not be a free service 5 Users need warranty service please contact your original sales unit 6 When users need warranty service please provide warranty card and purchase invoice or receipt of the certificate of the company seal 7 Warran...

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