HCS-3300/3302/3304 USB
Remote Programmable Laboratory Grade Swi tching Mode Power Supply
User Manual
1. INTRODUCTION
Since the intro d uc tion of HCS ser ies power supplies i n 2 0 0 9, we ha ve mad e n u mer o us i mp ro vement within t he l i mits o f
the original hardware modules, firmware and software framework.
In the upgraded version of HCS series power supplies, both the hardware and the firmware have been modified, the
application software has a completely design in concert with the value added features.
Added features which can b e done on the u nit panel.
1. Reset no load current to zero on current meter.
2. Reset the 3 presets to factory default
2. WARNING
• Do not use this power supply near water.
• Do not operate or touch this power sup ply with wet hands.
• Do not open the casing of the power supply when it is connected to ac mains.
• Refer all servicing to qualified service personnel only.
• Before replacing the AC fuse at AC socket, find out and clear up the cause first.
• Replace the AC fuse with the same type and rating as the original fuse.
• The max. output voltage of Model HCS-3304 is over 60VDC, avoid touch the metal contact part of the output
terminals.
• This power supply is designed for using in non-cascade environment. It is not recommended to connect two or more
power supplies in parallel or in series.
• Analogue Remote Control or Remote Programming via USB function is only suitable for stand-alone one unit
operation.
• Do not use this power supply with electrical motors, solenoid or inductive load that generates a back EMF and
voltage tra ns ient which may damage the power supply
3. CAUTION
• Use a grounded 3 pin AC source.
• This unit is for indo or use only.
• Do not operate or place this unit in a humid, dusty, in direct sunlight location or near any heat source.
• Before plugging into local AC mains, check with the rating label at the back of the unit.
• Do not bloc k any ventilation openings of the unit.
• This unit must be used within the specified rating, regular excessive continuous loading may cause damage to the
power supply.
• The gauge size of input power cable must be at least 0.75mm
2
and the total length of power cable must not exceed
3m.
4. OPERATION ENVIRONMENTAL CONDITION
• 10-80% R.H.
• Altitude up to 2000m
• Installation category: CAT 2
• Pollution degree: 2
• Mains supply voltage fluctuation up to ±10% of t he normal voltage