Comparisons
Comparison Table
H.T. Automatic Voltage Regulator L.T. Automatic Voltage Regulator Transformer with Builtin HT AVR
AVR is installed before Stepdown Transformer and stabilised HT supply is fed to the Input of the Transformer AVR is installed before Stepdown Transformer. Fluctating HT supply is fed to the Input of the Stepdown Transformer. Very little floor space is required as both transformer & transformer part of the in-built HT AVR is in the same tank. In fact the total saving in space is approx 80%. In comparison to separate AVR's either HT or LT & Transformer separately.
Since the supply of the Transformer is at Stabilised voltage, the Transformer is protected from Low/High voltage fluctation. Since fluctating voltage is fed to the Transformer the unit will not be protected from Lower/Higher Voltage fluctuation The total unit is so designed that the fluctuating voltage is taken care of initially by the transformer unit itself. So the question of protection due to fluctuating voltage does not arise.
Since the stabilised voltage is fed to the transformer, the transformer will be utilised upto it FULL rared capacity at rated voltage. Since the Transformer is getting fluctuating supply voltage, the unit can not be utilised at its full rated capacity and the rating of the transformer will be restricted to the ratio of minimum supply voltage by rated voltage. The total unit is so designed that the unit itself is capable of FULL power capacity within the fluctuation limit.
The efficiency of the Transformer will be better since it is fed with rated voltage. The efficiency of the Transformer is lower as the Transformer is not fed with proper voltage. The total combined efficiency is the LOWEST in comparision to HT AVR with separate transformer & LT AVR with separate transformer.
Separate coast of Installation is involved. Separate coast of Installation is involved. No separate cost of installation for AVR is involved
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