OPTI-UPS SS30K33 User Manual
AVR
Industrial-Grade High Efficiency A.C Voltage Regulator
USER’S MANUAL
OPTI-UPS International Corporation reserves the right to make engineering changes on all its products. Such
refinements may affect information given in the instructions. Therefore, USE ONLY THE INSTRUCTIONS THAT
ARE PACKED WITH THE PRODUCT .
WARNING: High voltages are pre sent in side this unit during operation. Do not operate this unit unless all covers
are in place. Installation and servicing should only be done by qualified personnel.
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CONTENTS
1- The Protection and Maintenance of AVR
2- Safety warnings
3- Description of the symbols used in this manual
4- Introduction
5- Functions Introduction
6- Preliminary warnings to use the AVR
7- Operating procedures
8- The Operation Procedures of Maintenance By Pass Switch
9- Maintenance & Cleaning
3
4
5
6
7
7~8
8~9
10
10~11
10- Trouble shooting Guide
11- Storage
12- Technical specifications
13- Machine schematic view/outline
11
11
12
12~19
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1- The Protection and Maintenance of AVR
1. Please clean and maintain the AVR periodically to keep from dust for lasting machine life.
2. Please use soft cloth for wiping, and please don’t use sandpaper as detergent.
3.Please check every kind of connection wires every month periodically to prevent the loosing
or abrasion.
4. Please place the unit on a flat or even surface.
5.This unit should be situated with well-ventilation, please allow at least 30 cm clearance from
the rear front, left and right side, and these ventilation openings of right and left front , and
rear line should never be blocked.
30cm
6. Please avoid the direct sunshine, rain or moisture place.
7. Keeping the unit away from fire and high temperature to avoid overheat.
8. Please don’t place any object on the top.
9. Avoiding the installing place that contains the corrosion gas.
10. Operating temperature is between 0 ℃ ~ 40℃.
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2- Safety warnings
For the user’s own safety, the safety of data and this product
read the following safety instructions carefully before using
the unit!
- This system has been designed to provide all the necessary safety conditions needed
to protect electronic office equipment including information systems. In case of any
questions, refer to your authorized technical service representative.
- In order to avoid any damage to the equipment, it is advised to transport it in its own packing.
- In the event of sudden temperature changes such as from cold to the normal working
temperature, mist can form inside the AVR. It is absolutely essential that the AVR be dry
before switching it on. Due to this reason wait for at least 2 hours before operating it.
- Once dry, make sure you observe all the conditions in the environment section of the
technical specifications table, before introducing it into the circuit.
- When installing the AVR it is necessary to use a connection cable of suitable diameter. The
point to be noted here is that the neutral and the earthing connections should be done in the
proper way.
- Place all the cables in a proper place so that they are not stepped on or get caught into
peoples feet. Before connecting the AVR to the circuit make sure you carefully read all the
instructions and warnings in the“Montage and Operating Procedures“ section of this manual.
- Don’t drop any foreign materials (like clips, nails etc...) into the equipment.
- In emergencies (damage to the cabin, front panel, or mains connections,splashing of liquid
dropping of any foreign materials into the equipment) switch-off the AVR, pull out the plug
and inform the authorized service center.
- The AVR can only be repaired by the authorized technical service personnel. Any attempt to
open and to repair by the user on his own could prove to be dangerous.
- Do not connect any consumer loads to the AVR, which exceed its power range.
- Read the instructions carefully in the “The Operation Procedures of Maintenance By Pass
Switch” & “Cleaning” section when cleaning the AVR.
- Leave at least a distance of 45 cm between the AVR and the walls in order to maintain
adequate air-flow .
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3- Description of the symbols used in this manual
The following symbols have been used in this manual.
This symbol gives information regarding points important for user’s own health
and safety, AVR operation and the safety of your data.
This symbol gives information, warnings, and other suggestions.
This symbol shows the operations that need to be executed.
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4- Introduction
Input power is applied across the motor driven variable transformer which has a “center tap”
that divides the variable transformer into bucking and boosting voltage areas.The buck-boost
transformer is a fixed ratio isolation transformer capable of high amperes at low voltage. The
ratio of the buck-boost transformer is determined by the amount of voltage needed to buck or
boost the input line voltage to maintain the specified output level. The buck-boost transformer
secondary is wired in series with the load and the primary is connected across the variable
transformer’s “center tap” and brush terminals.Depending on which side of the “center tap” the
variable transformer brush is positioned, the variable/buck-boost transformer system will add to
(boost) or subtract from (buck) the input line voltage. The further the variable transformer brush
is from the “center tap” the more bucking or boosting of voltage will occur.The key to the proven
reliability and long trouble free service life of a Voltage Regulator is in the combination of a
motor driven variable transformer with buck-boost transformer technology.
Buck-Boost transformer Variable transformer
Input Output
M Controller
Figure 1. Single phase regulator block diagram
As shown in figure 1, the only active component in the main power path of the voltage
regulator is the secondary of the buck-boost transformer. This gives the regulator the
advantage of being able to withstand substantial current overloads.The variable transformer
brushes, which are the most vulnerable component in any variable transformer system, are
completely isolated from overload conditions by the buck-boost transformer. Due to transformer
inefficiency above rated design, the amount of current that the buck-boost transformer can
induce across to its primary winding and into the variable transformer circuit is dramatically
decreased as regulator overload
current increases.
The controller monitors the regulator’s output voltage and then uses these feedback signals
to determine drive commands for the variable transformer motor interface circuit. The controller
is designed to adjust the motorized variable transformer to provide a +/-1~2% or better output
voltage regulation over the entire input voltage range.
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