• Energy Management Devices

Automatic Voltage Regulators

Energy Management Devices markets automatic voltage regulators for voltage classes 33 kV, 11 kV and 415 V, capacities ranging from 25 kVA (415V) to 5000 kVA (33 kV), manufactured by Ikon Engineers, based on the designs of the erstwhile Brentford Electric Ltd of UK. Ikon voltage regulators are available in dry and oil-cooled types, with or without built-in transformers. The normal input voltage range/band is 3 kV, but they can be designed even for voltage bands of 6 kV or more. Ikon has manufactured and supplied units for input voltage 6.5 kV to 12 kV (i.e., 5.5 kV band) and 27 kV to 36 kV (i.e., 9 kV). Output voltage is stabilised at ±1% of nominal output voltage. These voltage regulators smoothen out voltage fluctuations either existing in the incoming supply line, or arising from large load switching, and deliver output voltages of 11 kV ±1% (or 415 V ±1%, in the case of transformer with built-in regulator). They are also used for boosting the input supply voltage. The Ikon design, using buck-boost transformer and rolling contact regulator, has several significant advantages over transformers with conventional on-load tap changer (OLTC – can be supplied by the company), not the least being full utilisation of the transformer capacity and nil maintenance requirement, as compared to OLTC. There are currently over 2000 installations of Ikon automatic voltage regulators all over India, in large hotels, shopping malls, hospitals, large commercial complexes, industries and research establishments. The company also offers AC current limiting and DC smoothing reactors, rectifier units with variable DC output up to 5 kA, 1000 kW and special purpose transformers for furnaces, neutral earthing and isolation, etc.