Automatic Voltage Regulator (AVR) AVR Automatic Voltage Regulator (AVR) with on Load Tap changer The On Load Tap Changer, automatic voltage regulator (AVR) is used to compensate the voltage drop in the electrical networkâ?? so that customers at the line end receive the same average voltage value as those closer to the source. The voltage value reduction affects the operational quality of the rotating machines and increases the losses due to the high current drawn due to the voltage reduction. It also affects the quality of the illuminating system. EGYTRAFO Group produces the Automatic Voltage Regulator (AVR) with rating up to 630 A & 9 tapping positions. -The AVR is flange mounted (ON TANK) or (IN TANK) type according to the rating of the transformer and a remote tap changer control cubicle (RTCC) Our ranges are up to 630 A, up to 22 KV and more than 5 taping positions on request. Automatic Voltage Regulator (AVR) applications: you can use it as a safely starting machines such as induction motors and synchronous motors Also, boosters to give a small boost to distribution cable for compensating the voltage drop you can get the same advantage of the Variac Automatic Voltage Regulator (AVR) advantages: Increased KVA rating for a given size and mass Less amount of copper Due to the smaller size, the cost is less compared to a two â?? winding transformer The resistance and reactance are less compared to a two â?? winding transformer and hence it has superior voltage regulation The Volt-ampere rating is more compared to a two â?? winding transformer It is possible to get a smooth and continuous variation of voltage
Dry Transformers up to 3.6 MVA, 33 KV (Indoor & Outdoor) EGYTRAFO Group produces a wide range of Dry type Cast Resin transformers up to 3.6 MVA, 33 KV which are suitable for indoor and outdoor installation (inside an enclosure with certain IP) and ambient temperatures up to 45oC. Dry type transformers is a reliable alternative for oil immersed transformer with low running costs, free maintenance, environmental friendly and suitable for operation under heavy load fluctuations. * Different types: Impregnated LV, Casted HV Casted LV, Casted HV Al â?? Al winding (Aluminum) Cu â?? Cu winding (Copper) * Cooling Methods: Air Natural (AN) Air Forced (AF) : Increased Power by 35-40 % * General Characteristics & Advantages: Fire resistance : In locations where the fire risk associated with the use of mineral oil is unacceptable like offices, shopping complexes, apartment buildings, hospitals etc. Maintenance free: No liquids/oil to contaminate, break down, leak or explode and burn Insensitive to moisture High overloading capacity Long and stable lifetime Installation close to load centers (maximum safety) Easy to connect and install Immediate switch-on Easy to repair No special requirements for installation room Environmentally safe Hardly inflammable Low operational cost and service expenses High performance, reliability and high short circuit strength * Field of Applications: Transportation means as railways underground, trams, and tunnels Locations with vibrations and shocks (like ships and cranes) All products comply to IEC standardsKEMA Certified
Types of Oil immersed transformer:- A- Standard distribution transformers: Ratings from 25 KVA to 3500 KVA with vector group Dyn 11 Pole-mounted transformers Pad mounted transformers · Step -up transformers Step -down transformers B- Special Design Transformers: High rating up to 15000 KVA, 33 KV â?? Various numbers of taps for instance: (5,7,9,12,.21, etc.. â?? Dual voltage transformers for both: primary and secondary side Testing transformers according to customer ratings and data Isolating transformers according to customer ratings and data EGYTRAFO Group can design new solutions for Oil & Gas, Utilities, and Industrial sectors, according to their existing networks, and requirements. C- EARTHING Transformers / Zigzag. D- Auto-Transformers: O.L.T.C Auto Transformer with rating up to 600 A & 9 tapping positions. All products comply with IEC Standards KEMA Certified
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