Download SERVO - Sai Electricals

Voltage fluctuations & phase unbalance cause several problems in
industrial, commercial & residential sectors, such as:
Reduction in motor efficiency, overheating and fast ageing of motors
and switchgears
Stoppage of production, inconsistent product quality and increase in
wastage
Malfunctioning & data loss in electronic/ CNC equipments
Quick burn out of light fittings, bulbs & lamps
Higher consumption by lighting load
Higher demand & higher energy bill
Loss of competitive position
ENERGY ENHANCEMENT BY USING POWERWARE SERVO
VOLTAGE REGULATORS:
You can now enhance the quality of power, as well as save power, by
using Powerware servo voltage regulator. It is a distortion less, servo
controlled stabilizer available up to 3000 KVA capacity. It works on the
principle of sine-wave superimposition. It bucks or boosts the incoming
voltage by superimposing a variable voltage having the same waveform.
Powerware servo voltage regulator is the proven solution to all above
problems caused by voltage fluctuations & unbalance. It saves your
costly equipments & processes from detrimental effects of fluctuating &
unbalanced voltage & gives you mental peace to concentrate on more
important business issues.
Above all, Powerware servo voltage regulator can substantially add to
your bottom-line by saving up to 20% power, depending on the
incoming power quality.
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REGULATORS
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Working principle of Powerware servo voltage regulator:
Constructionally, it consists of two transformers, one is a variable
autotransformer (dimmer) and the other is a buck-boost transformer, as
shown in the single line diagram. In case there is a voltage fluctuation, the
microprocessor based controller moves the carbon brushes on the dimmer
unit to tap the equivalent of voltage to be added or subtracted on the
mains voltage. This voltage is then fed to the primary of the buck-boost
transformer which, in turn, adds or subtracts it from incoming voltage, so that output voltage is always maintained at its set value.
The unit can be designed as an outdoor, oil cooled unit or an indoor, air cooled unit. Several customized add-on options can also
be offered.
Since the control of voltage is carried out independently for each phase, therefore any voltage unbalance also gets corrected.
Furthermore, each phase can be loaded independently; therefore our servo voltage regulator is suitable for unbalanced load
conditions as well.
Powerware versatility to offer customized solutions:
We do not thrust a standard model on customers. With a team of well-trained applications engineers, we offer customized servo
voltage regulators to meet your specific voltage needs and power conditions. As a result wide choices are available to suit specific
site conditions, such as:
• Indoor or outdoor models
• Single or three phase options
• Units with inbuilt isolation transformer
• Air-cooled or oil-cooled models
• Models with optional add-on features such as:
• Inbuilt by-pass system
• Surge and spike suppression
• Single phase prevention & phase reversal
• High/low cut off, auto resumption
• Trip & alarm for abnormalities
Customer profile:
Our servo voltage regulators find wide applications in industrial, commercial & residential sectors, process plants,
telecommunications, power electronics, IT/ITES & CNC machines. Some of our diverse customers are:
GTL
Vodafone
HCL
Coca-Cola
APC
Idea Cellular
Pepsi
Jobs Spa, Italy
CNBC
MTML Mauritius
NDTV
Bajaj Hindustan
Airtel
Balrampur Chini
WTTIL - QUIPPO
Ballu NV, Belgium
Marico
Bharat Petroleum
Unitech
Reliance Info
Colgate
IGL
RSWM Ltd.
Military Engg. Services
Tata Tele
Indian Oil
Obasanjo Farms, Nigeria
Alcatel - Lucent
The Fine Art of
ENERGY ENHANCEMENT