SMPS System Concept
These types of power plants did not have the scope for modular expansion,due to which frequent changing of the power plants with each expansion of the switching transmission system was a compulsion.As compared to convention SCR/Thyristor controlled and ferro resonant power factor the operating characteristics such as transient response power factor efficiency total current harmonic distortion and ripple noise are markedly improved in switch mode power supply plants.
That makes the SMPS based power plants more efficient,economical and reliable for the telecom equipments system.
SMPS based power plants are more compatible with conventional flooded lead acid and VRLA(valve regulated lead acid) batteries.
The batteries are more prone to temperature. It is a known fact that for every 10degree Celsius rise in working temperature over the specified ambient temperature the life of the battery is reduced to half.as most of the SMPS power plants employ micro-processor control techniques the introduction of temperature compensation logic for batteries has became simple and easier.
BASIC TYPES OF POWER PLANTS AND SPECIFICATIONS
Classification of power plants(3 piece)
Power plant comprises 3 parts
1. Float Rectifier.2. Battery Charger.
3. Switching Cubicle.
Power plants are classified in terms of their capacity..
Small exchange Medium exchange Large exchange
power plants power plants power plants
Capacity 5/12A 25/5A >50AInput Single Phase Single Phase Three Phase
Paralleling Not possible Only manual Auto paralleling
paralleling is passible
possible
Another classification of power plant in terms of type
Single unit Two unit Three unitB,R,F,C and SC one unit is FC/BC/SWC FR,BC and SC
will be in single another unit is FR are in individual units.
container module
WORKING PRINCIPLE OF CONVENTIONAL POWER PLANT
Classification of power plants(3 piece)1. Float Rectifier
2. Battery Charger.
3. Switching Cubicle.
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