"NITEL" l t industrial a.v.r

NIFA ELECTRONICS Began outlining sound company framework, built on professional lines way back in 1991. NIFA ELECTRONICS has grown by leaps and bounds in exponential manner to become one of the major player in the field of POWER CONDITIONING, POWER MANAGEMENT & Allied Technical Services..

BRIEF ABOUT "NITEL" L.T. Industrial A.V.R.

Automatic Voltage Regulator is an equipment meant for obtaining constant voltage from fluctuating mains input supply. It protects valued Plant & Equipments from over and under voltage, resulting in improvements in the efficiency, performance, safety and life of the equipments. “Nitel” cover a wide range of Automatic Voltage Regulator of the capacity from 25 KVA to 5000 KVA for different input voltage ranges both LT & HT (400 V & 11/33 KV). Transformers with BUILT IN stabilizers are covered upto capacity of 5000 KVA. The range of input supply which the regulator is designed for depends upon the voltage condition at the supply point. However some standard ranges for L.T. Stabilizers are as under.

Input Voltage 300V-460V 340V-460V 360V-460V
Output Voltage   400/415±1%  

WHY “Nitel” INDL. A.V.R.

  • Energy saving between 5% to 10%.
  • High efficency (above 98%) & minimum load losses.
  • On Load stepless voltage variation.
  • Increase in the productivity by reducing the breakdown period of the machines.
  • Reduction in maintenance cost of the equipment.
  • Low replacement cost.
  • Long Service life.
  • 80% Depreciation claim as per Income Tax Act.


“Nitel” Industrial Automatic Voltage Regulator are Auto Wound Transformers having helical coils mounted on a conventional laminated core. Carbon Rollers assembled on a fibre glass carrier board traverse the length of the Coil Track… These rollers are electrically connected to the output terminals and as they are driven over the track, a variable voltage is obtained.

Beneath the regulating coil a number of compensating winding are connected in parallel and short circuited to reduce the effect of core-flux 'fringing' and keeps the reactance of the regulator fairly constant at any position of the rolling contact.

The Variations of more than 1% of the rated output voltage of the AVR are sensed through solid state relay which sends signals to the controlling servo motor which further drives the roller mechanism in such a direction so as to increase or decrease the voltage and stabilize it to the rated output voltage. Solid State Relay operates on 230 V, 1 Ph supply..


“Nitel” Indl. Automatic Voltage Regulator play efficient role in all types of Resistive, Inductive & Capacitive loads, like Resistance Heating, Lighting Equipments, Motors, Rectifier Loads etc. It can be installed any where, may it be an Industrial Plant like Cement, Flour Mills, Pharmaceuticals, Cold Storage, Textile, Paper, Food Processing, Chemical, Oil & Vanaspati Plants, and name a few; Hospitals, Hotel, Shopping Mall, Residential Colony/Complex etc.


Owing to its high efficiency and associated benefits, the payback period for the cost of “Nitel” INDL. A.V.R. is from 6 to 12 months. Depending upon the Input Voltage Variation and number of working hours of the plant.. The HIGHER the Input Voltage the SHORTER will be payback period..


  • Prolonged coil life (15-20 years) under normal working conditions, due to robust winding.
  • The graphite rollers roll, while sliding on the coil track, so contact point of the roller goes on changing which prolongs the life of the rollers.
  • Without lifting the complete assembly, the rollers can be inspected / replaced by opening the top cover only.
  • Can be manufactured for both INDOOR and OUTDOOR installations.


Input Voltage 360 V to 460 V; 50 C/S; 3 Ph, 4 wire (OTHER RANGE ON REQUEST)
Output Voltage 400 V, 3Ph, 50 C/S; 4 Wire (OTHER RANGE ON REQUEST)
Type of AVR * Balance Type with Single Phase control
* Unbalance Type with Each Phase Control CKT & Mechanism.
Efficiency 99%
Cooling ONAN
Type Indoor
Temp.Rlse 35 Degree Cs. Above, ambient
Mounting On Uni-Directional Wheels
Correct Rate 8-10 V/ sec.
Duty Cycle 100%
Wave form Distortion Virtually Nil
Over Load Capacity 200% for 1 Minute


  • Online UPS
  • HT & LT Industrial AVR
  • Servo Stabiliser
  • Ultra Isolation Transformer
  • Automatic Power Factor Control Panel
  • Maximum Demand Contr
  • Special Control Panels


  • Power Quality Management
  • Energy Audit Study


Centrally located in Ahmedabad, the customer support division remains consistent in progressively adding to its well-deserved reputation, spurred by a scientific spirit, entire team of engineers & technicians involved in the maintenance operations, meticulously work to keep customer demands satisfied. Our commitment to the customer goes beyond executing the best possible equipment. To help assure the perfect match of product & application, we offer and extensive direct support at all levels.