Vijai Electricals Ltd. has always been in the forefront of introducing cutting edge technologies in the field of Distribution Transformers.

After introducing concepts like the Amorphous Metal Distribution Transformers and the Completely Self-Protected Distribution Transformers which paved the way for a healthy Distribution System, Vijai is now proud to introduce Delta Core Transformers which provide improved technical reliability in terms of quality and performance. These Transformers can be manufactured till 2500 kVA, 33 kV class.

Vijai’s Single Phase Oil Filled Distribution Transformers are designed to effectively improve the quality and reliability of the electrical distribution system. Vijai specializes in the manufacture of Pole type Silicon Steel and Amorphous Metal Transformers.

Vijai’s Three Phase Distribution Transformers utilize the most advanced and versatile design, delivering excellent performance characteristics.

Vijai also offers hermetically sealed type transformers along with other conventional types of Transformers.

• Oil impregnated paper insulation
• Accuracy class, output & number of secondary windings as desired
• Single primary winding upto 145 kV and 2 stage primary windings in cascade for 245 kV
• Hermetically sealed with N₂ cushion

• Oil impregnated paper insulation
• Accuracy class, output & number of secondary windings as desired
• Single primary winding
• Hermetically sealed

• Simplicity, higher reliability and safety of design
• Hybrid interrupter design for 145 kV breaker and improvised puffer type interrupter for 245 kV breaker
• Reduced operating mechanism energy requirement
• Small amount of SF₆ gas
• Rotary seals
• Minimum maintenance, servicing and installation time
• Higher mechanical endurance and very low probability of re-striking
• Conform to class M₂ & C₂
• Compact and reliable hydro-spring mechanism

LT Oil Immersed Circuit Breaker for Completely Self Protected (CSP) Distribution Transformer:

• Oil impregnated paper insulation
• Accuracy class, output & number of secondary windings as desired
• Graded insulation for primary
• Hermetically sealed with N₂ cushion

• Oil impregnated paper insulation
• Accuracy class, output & number of secondary windings as desired
• Graded insulation for primary
• Hermetically sealed
• Technical Parameters

• Higher Transformer Availability : Available for a longer duration than conventional transformers. Internal breaker (Type CLR) is tripped by a standard Bi-Metallic thermal trip element, which integrates oil temperature and secondary current flow, allowing the transformer to continue to operate even under overload conditions, until the oil temperature makes coil damage imminent. Improvised CQR Type breakers can also be provided which are furnished with instantaneous magnetic trip element in addition to the Bi-Metallic thermal trip element.

Vijai’s Corrugated Tank Distribution Transformers are compact in size and elegant in appearance. These transformers are manufactured by using the highest quality materials, employing the most modern and reliable manufacturing practices.

• Only very small space is required as compared to conventional air insulated switchgear
• Minimum maintenance
• Three phases enclosed in tubular mild steel enclosures
• Vacuum interrupters are in triangular formation
• Plug in type cable terminations
• Modular construction
• Integral earthing
• Hermetically seated enclosures
• Separate panel for busbar earthing and voltage transformers
• Conventional epoxy resin instrument transformers.
• Motor/manual operated disconnectors
• Compatible to remote operation.
• Full safety to operator
• Mechanism is of M₂ class
• Motor wound spring charged mechanism with charging time of < 10 sec
• Manual spring charging facility

• Mechanism matching VI Performance of M₂ Class
• Factory assembled, ready to install.
• Compact Size
• Motor wound spring charged mechanism with charging time of <10 sec.
• Mechanism suitable for fast auto reclosing duty.
• Manual spring charging facility
• Available optionally with 2 trip coils
• Series trip coil.

Vijai has been producing DryType Cast Resin Transformers for more than 15 years. Vijai’s cast coils are well known for their extremely low levels of Partial discharge.

In service in diverse industries, Electricity Boards, Nuclear / Thermal / Hydel Power Plants, Railway Traction and high-rise buildings, hospitals, subways, underground vaults, tunnels, school, steel factories, chemical plants, etc. where safety is of prime concern.

• Totally enclosed simple in construction and easy to operate
• VCB can be fixed (or) draw out type
• Mechanism matching VI performance of M₂ class (10,000) operations
• VTs/PTs and relay control panel are inbuilt
• Power supply can be taken through roof bushing (or) cable box (or) combination of both
• Minimum maintenance
• Enclosure tested for IP55
• Motor wound spring charged mechanism with charging time of <10 sec
• Mechanism suitable for fast auto reclosing duty
• Series trip coil

Three Phase Pad Transformers are compact power centers for commercial or industrial applications where safety, reliability and aesthetics are especially important. With proper design selection, they can be located near or inside buildings for greater flexibility and savings.

The state of the art vacuum interrupter manufacturing facility of 12 kV & 36 kV class for use in vacuum switchgear, consists of ultra clean rooms of class 100 and vacuum processing furnaces etc., with complete test facilities.