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SVS
 

Static Voltage Stabilizer-

Electronic voltage regulators operate by comparing the actual output voltage to some internal fixed reference voltage. Any difference is amplified and used to control the regulation element in such a way as to reduce the voltage error. This forms a negative feedback control loop; increasing the open-loop gain tends to increase regulation accuracy but reduce stability (avoidance of oscillation, or ringing during step changes).

There will also be a trade-off between stability and the speed of the response to changes.  If the output voltage is too low (perhaps due to input voltage reducing or load current increasing), the regulation element is commanded, up to a point, to produce a higher output voltage –by dropping less of the input voltage (for linear series regulators and buck switching regulators), or to draw input current for longer periods (boost-type switching regulators); if the output voltage is too high, the regulation element will normally be commanded to produce a lower voltage.

S.No

Type of Stabilizer

Advantages

Disadvantages

1

Servo voltage stabilizer

Low Technical Skills

More wear and tear due to moving mechanical parts and requires periodic replacement of brushes.

Less number of components

Due to low correction speed there will be voltage overshoot and voltage dip.

Easy to manufacture

Heavy and Bulky

High efficiency

No inrush current limiting for surge loads.

2

Relay type voltage stabilizer

Simple design

Periodic maintenance due to relay failure.

Easy to manufacture

Poor regulation.

Low cost

Interrupts load current during step change.

High efficiency

Unsuitable for higher KVA rating

3

SCR / Triac type Tap changing voltage stabilizer

No moving parts, less maintenance

Complex wiring

Fast correction speed

Due to stepped regulation output is not tightly regulated.

High efficiency

Interrupts current during step change

 

No inrush current limiting for surge loads

 

Not very effective in lower KVA (i.e., < 2KVA)

4

Differential Power mode IGBT PWM static voltage stabilizer

No moving parts, less maintenance.

 

Tight regulated output up to +/- 1%.

 

Fast correction speed

 

Low cost in higher KVA

Not very effective in lower KVA (i.e., < 2KVA)

High efficiency

 

Inrush current limiting for surge loads.

 

Highly reliable.

 

Product Features:

Our developed Static Voltage Stabilizer consists of following features:
  • Microcontroller based stabilizer.
  • Swift response. 
  • Compact design.
  • Wide input voltage range 240V – 500V.
  • Auto Cut-off in over-voltage & under voltage condition.
  • Designed to have unique feature of Zero crossing detection.
  • High efficiency and silent operation.
  • Excellent output voltage stability.
  • No distortion in output wave form.
  • Over load protection.
  • Dynamic response.
  • LCD display to monitor input & output voltages & currents.
  • No movement of parts.
  • Available in single and three phase.
  • Optional isolation transformer for protection from common mode noise.
  • Optional bypass switch.
  • Provision of surge and spike suppression.
Salient Features
  • Over load and short circuit protection: It has overload/ short circuit current limiting and cut-off, the control part of the static stabilizer will sense the output current and if the load is more than the rated KVA, for example: In a 3KVA stabilizer, if you accidentally connect a load of 10KVA, it will limit the output current to the maximum output current at full load of the stabilizer.
  • High input voltage cut off: The high input voltage cut-off is set for 270V (it can be set for some other voltage also) up to 270V input, the output will be constant 220V. Because of this high voltage cut-off, the stabilizer itself will be protected from high voltage and the connected load is also safe.
  • Low voltage cut off: The low voltage cut off can be set at any value. For example in a 180V to 260V model, the low voltage cut-off can be set at 180V or 170V or lower. Because of this low voltage cut off, the stabilizer is protected from low voltage malfunctioning.
  • Wear and tear: There is no wear and tear like the conventional stabilizer, as this stabilizer is fully solid state and there is no moving part. Because of this, there is no need of replacement of components even after certain period due to ageing. This eventually increases the reliability of the static stabilizer.

All the above protections and safety measures are not incorporated in the conventional stabilizers.

Applications
  • Office & Business Equipment:
    Computers, Electronic Typewriters, Ledger Posting Machines, Electronic Cash Registers, Telephone Exchanges, Facsimile [FAX] etc.
    CNC systems, Photo Typesetters, Tele-printer, Security Systems, etc.
  • Process Controls Factory Medical Equipment:
    Machine, Field & Lab Instruments, Communication Equipments, etc.
  • Medical Equipment:
    Life saving emergency equipments in ICUs, X-ray Machine, Medical Monitors, Field & Lab Instruments, Communication Equipments, etc.

 

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