Special Transformers like Converter and Earthing.
Maintenance & Services
AJTS provides maintenance service and spare parts for all types of transformers
Special Transformers like Converter and Earthing.
AJTS manufactures the following transformers for special applications and to customer specifications.
Converter Transformer ( 1500KVA 36KV 18 Pulse)
Induction / Thyristor duty transformers suitable for 3 Pulse / 6 Pulse / 12 Pulse / 18 Pulse drive configurations. It is possible to make major changes in the output current and voltage by using a transformer with a different rectifier configuration. It is used for induction motor starting.
Earthing transformer (Fault current 4000Amp for 10 seconds)
A grounding transformer or Earthing transformer is a type of auxiliary transformer used in three-phase electric power systems to provide a ground path to either an ungrounded wye or a delta-connected system.
Products
Products designed, manufactured and tested to comply with national and international standards including IEC-60076 / IEC-60076-11 / ANSI C57 / BS-171
AJTS develops the design using fully computerized techniques. All drawings are prepared on computer using CAD Software. Extensive analysis by an interactive computer program is used to obtain optimum designs, which meet the requirements of the customer specifications and the relevant standards.
Fixed Speed Drive Transformers for well head application ( 6, 12 & 18 Pulse )
Fixed Speed Drive Transformers for well head application ( 6, 12 & 18 Pulse )
AJTS manufactures Oil Filled Fixed Speed Drive Transformers for well head application. Transformers are manufactured in line with standards IEC60076 and DEP Core material is High grade CRGO steel and Windings are made up of electrolytic copper. Type of insulating oil is as per IEC 60296. Step down range can be from 33KV to 0.9-3.3KV, 1.1-3.8KV, and 1.7-5.1KV Type of insulating oil , tap range and other requirements can be modified as per customer requirements.
Variable Speed Drive Transformers for well head application ( 6 , 12 & 18 Pulse )
Variable Speed Drive Transformers for well head application ( 6 , 12 & 18 Pulse )
AJTS manufactures Oil Filled Variable Speed Drive Transformers for well head application. Transformers are manufactured in line with standards IEC60076 and DEP Core material is High grade CRGO steel and Windings are made up of electrolytic copper. Type of insulating oil is as per IEC 60296. Step up range can be from 0.433KV to 0.9-3.3KV, 1.1-3.6KV, and 1.7-5.1KV Type of insulating oil, tap range and other requirements can be modified as per customer requirements.
Package Substation with RMU (Type of Insulation: SF-6/Oil) & LV Feeder Pillar.
Package Substation with RMU (Type of Insulation: SF-6/Oil) & LV Feeder Pillar.
AJTS manufactures Package Substations which consists of an assembly of the SF 6 or Oil type Ring Main Unit as per requirement, Transformer, Low Voltage Distribution Board/Low Voltage Feeder Pillars following on a skid base. The units are supplied without housing or with GRP housing, steel housing as per specifications. Package Substations (Unit Substations / Pocket Substation) are manufactured as per customer specifications and complies with the following standards as applicable. IEC 62271-High voltage/Low voltage pre-fabricated Substations. IEC 60298-A C metal enclosed HV Switchgear. IEC 60076-Power Transformers Standard ratings for Package Substations are: 200 kVA / 500 kVA / 1000 kVA / 1600 kVA / 2000 kVA. Special Transformers like Converter and Earthing. JTS manufactures the following transformers for special applications and to customer specifications.
Transformer Skids with LV Feeder Pillar & RMU.
Transformer Skids with LV Feeder Pillar & RMU.
AJTS manufactures Skid Packages which consists of an assembly of the SF 6 or Oil type Ring Main Unit as per requirement, Transformer, Low Voltage Distribution Board/Low Voltage Feeder Pillars following on a skid base. The units are supplied without housing or wire mesh housing as per specifications. Standard ratings for Skids are: 50 kVA / 100kVA / 160 kVA / 300 kVA / 630 kVA / 1000 kVA / 1250 kVA / 1600 KVA
Power Transformers up to 6,000 KVA, voltage up to 36kV.
Power Transformers up to 6,000 KVA, voltage up to 36kV.
AJTS manufactures Oil Filled power Transformers up to 6000 KVA and 36kV voltage class. Transformers are manufactured in line with standards IEC60076 and OES-6 Core material is High grade CRGO steel and Windings are made up of electrolytic copper. Type of insulating oil is as per IEC 60296. Adequate strength is provided to Transformer tanks through stiffeners to withstand pressure occurring inside transformer. Type of insulating oil, tap switch (off circuit/on load) , tap range and other requirements can be modified as per customer requirements.
Ground mounted Distribution Transformers up to 36kV.
Ground mounted Distribution Transformers up to 36kV.
AJTS manufactures Oil Filled Ground Mounted Transformers up to 3000KVA and 36kV voltage class. Transformers are manufactured in line with standards IEC60076, OES 5 and DEP.Core material is High grade CRGO steel and Windings are made up of electrolytic copper. Type of insulating oil is as per IEC 60296.
Pole mounted Transformers up to 36kV.
Pole mounted Transformers up to 36kV.
AJTS manufactures Oil Filled Pole Mounted Transformers up to 315KVA and 36kV voltage class. Transformers are manufactured in line with standards IEC60076, OES 5 and DEP.Core material is High grade CRGO steel and Windings are made up of electrolytic copper. Type of insulating oil is as per IEC 60296.
Process
Core
Core
High Permeability Cold Rolled Grain Oriented steel is used for core manufacturing. Step lap core construction is used which reduces No Load loss, Excitation current & Noise level.
Winding
Winding
Windings are made of Electrolytic copper strip, Copper foil or Electrolytic copper wire. For Power Transformers High Voltage & Low Voltage windings are Disc winding. For Distribution Transformers High Voltage winding can be Layer or distributed Cross-over and Low voltage winding can be Copper foil winding or Spiral winding.
Core coil assembly
Core coil assembly
Coils are assembled over core leg during this process and necessary HV Phase, HV Tap lead, LV phase and LV neutral Connections are done.
Core coil assembly drying
Core coil assembly drying
The core and winding assembly is dried under vacuum in order to remove moisture from insulation.
Tanking & Oil Filling
Tanking & Oil Filling
After drying process ends the Megger values of each job are checked and tanking done. The transformer is then filled with oil under vacuum.
Testing & Dispatch
Testing & Dispatch
Finally the job is tested as per relevant standards and customer’s requirement and dispatched after successfully passing the tests.
KEMA SC Test Certificates
