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USER MANUAL
DS 300H Series � 3/3 � 30 kVA � UPS CONTROLLED UPS
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SAFETY
IMPORTANT NOTICES
1. Read instructions carefully before installing and starting the UPS.
2. All warnings in the manual should be adhered to.
3. All operating instructions should be followed.
4. The unit should be supplied by a grounded outlet. Do not operate the unit without a ground source.
5. Power cables of the UPS should be routed carefully so that they are not to be walked on.
6. Please save this manual.
7. Please save or recycle the packaging materials.
WARNING!
• Do not insert any object into ventilation holes or other openings.
• To reduce the risk of fire or electric shock, install in temperature and humidity controlled
indoor area free of conductive contaminants.
• To reduce the risk of fire, replace fuses with the same type and rating when necessary.
CAUTION!
• Only qualified personnel should install or service UPS/batteries.
• Risk of electric shock, do not remove cover. No user serviceable parts inside, refer
servicing to qualified service personnel.
• The output may be energized even when the unit is not connected to a mains supply.
• Risk of electric shock! Hazardous live parts inside. This unit is energized from the
battery supply even when the input AC power is disconnected.
• To reduce the risk of electric shock, disconnect the UPS from the mains supply before
installing a computer interface signal cable. Reconnect the power cables only after signaling
interconnections have been made.
CAUTION !
Units are designed to operate on the concrete floor.
ABOUT THE BATTERIES
CAUTION: RISK OF ELECTRIC SHOCK!
The battery circuit is not isolated from the mains voltage. Hazardous voltages
may occur between the battery terminals and the ground!
• A battery can present a risk of electric shock or burn from high short circuit currents. The
following precautions should be taken when working on batteries :
* Remove watches, rings or other metal objects.
* Use tools with insulated handles.
• The batteries in this UPS are recyclable. Batteries must be disposed of according to local
environmental laws. The batteries contain lead and pose a hazard to the environment and human
health if not disposed of properly.
•
Do not dispose of batteries in a fire. The batteries may explode. Do not open or mutilate the
batteries. They contain an electrolyte which is toxic and harmful to the skin and
eyes. If electrolyte
comes into contact with the skin the affected area should be washed immediately.
• The internal energy source (the battery) cannot be de-energized by the user.
• When changing batteries, install the same number and same type of batteries.
I. GENERAL DESCRIPTION
1.1 Introduction
TESCOM DS300H Series Uninterruptible Power Supplies are double-conversion; three
level on-line UPSʼs manufactured with the latest IGBT and PWM technology, to produce an
uninterruptible, fully DSP (Digital Signal Processor) controlled pure sine wave output to
critical loads.
TESCOM DS300H Series units are 3-phase in/3-phase out devices, and they are
installed between a three phase critical load, and a 3-phase+N mains supply
The advantages of using DS300H UPS:
• Power blackout protection:
If the mains power fails, the UPS continues to supply the critical load using the
energy stored in its batteries, keeping the load immune from power disturbances.
• Increased power quality:
The UPS has its own internal voltage and frequency regulating software, which
ensures that, its output to the critical load is maintained within close tolerances, independent
of voltage and frequency variations on the mains power lines.
• Fully digital control by three DSP controller for each UPS:
The UPS is controlled by 3 independent DSP chips which are communicating each
other continuously. Rectifier, Inverter and User Interface modules have separate DSPʼs to
achieve the highest performance. Each DSP module has many parameters to control and
monitor the system to have the best electrical power output and to help diagnostic.
• Increased noise rejection:
By rectifying the input AC power to DC power and then converting it back to AC
(Double-Conversion) any electrical noise present on the input mains supply line is effectively
isolated from the UPS output. Therefore the critical load is supplied with only clean and
uninterrupted AC power.
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