Urja Techniques (India) Pvt. Ltd.

Rabale, Navi Mumbai, Maharashtra

Specifications:

• 'Tap Changer' options available
• "Off Circuit Manually Operated" and "On Load Tap Changer" (OLTC) with AVR and RTCC panel
• Prime quality, low loss, high permeability 'Cold Rolled Grain Oriented' silicon steel for core to achieve low no load losses
• Electrolytic copper with insulating paper multi covered round wires and strips for both the primary and secondary windings to achieve low load losses
• ONAN /ONAF cooling with conventional pressed steel radiators
• Terminal arrangement is done for primary and secondary as per site requirements in these power Power Transformers and single phase Power Transformers
• Low viscosity power distribution transformer oil with in numerous superior grades for specific usage

In cast resin dry type transformers, the complete encapsulation of primary and secondary winding in epoxy resin prevents penetration of moisture into windings. The cast resin offers very good protection against adverse ambient conditions. These transformers can work without disruption of service at 100% humidity. Due to the high grade insulation material, coils are non hygroscopic & the transformer can be switched on directly without pre-drying even after a long period of service interruption.Contrary to the conventional dry type transformers the cast coil transformers are better in respect of impulse voltage withstand strength. Higher dynamic short circuit withstands strength as compared to oil immersed and conventional dry type transformers because of fibre glass reinforced epoxy encapsulation. No partial discharges can occur during operation. The insulation material used is glass fibre reinforced with epoxy resin of class 'F' which can withstand wide temperature variation. Due to high quality insulation material the transformer is practically non-inflammable by an electrical arc, special fire protection measures are not required. Due to encapsulation of coils with cast resin the coils dimensions are stable & no coil tightening is required to maintain the short circuit strength. Also no check of oil level and electrical insulation/oil is required. This leads to saving in cost on account of maintenance.As cast resin transformers are solidly cast, problem associated with oil filled transformers like oil leakage and pilferage of oil is completely avoided. These transformers are generally smaller in dimensions and lesser in weights. The construction and installation cost for the sub-station can be reduced by adopting dry type transformers.Without fire or danger of explosion, it is possible to place the transformers near to the load centre.

Copper foil winding technology is used for high current sections to achieve following advantages:

• Sustaining short circuit forces without any distortion in low voltage and high current windings
• Hot spot in LV windings regulated
• No transposition, stray losses are minimal. Thus total copper losses are also further reduced
• Total copper losses reduced vis-a-vis standard losses. Thus heat dissipating area also reduces

A distribution transformer is a transformer that provides the final voltage transformation in the electric power distribution system, stepping down the voltage used in the distribution lines to the level used by the customer. The invention of a practical efficient transformer made AC power distribution feasible; a system using distribution transformers was demonstrated as early as 1882.

If mounted on a utility pole, they are called pole-mount transformers. If the distribution lines are located at ground level or underground, distribution transformers are mounted on concrete pads and locked in steel cases, thus known as pad-mount transformers.

Distribution transformers normally have ratings up to 200 kVA, although some national standards can describe units up to 5000 kVA as distribution transformers. Since distribution transformers are energized for 24 hours a day (even when they don't carry any load), reducing iron losses has an important role in their design. As they usually don't operate at full load, they are designed to have maximum efficiency at lower loads. To have a better efficiency, voltage regulation in these transformers should be kept to a minimum. Hence they are designed to have small leakage reactance.

We are supplier and exporter of this product.

We are supplier and exporter of this product.

We are supplier and exporter of this product.

The most common use for converter transformers are found in applications such as:

• Variable speed drives (VSD)
• Aluminium electrolysis
• DC arc furnace
• Graphitizing furnaces
• Traction substations
• Copper refining

Specifications:

• "Off Circuit Manually Operated" and "On Load Tap Changer" (OLTC) with AVR and RTCC panel
• OFWF cooling with ONAN cooling optional
• ONAN cooling with conventional pressed steel radiators
• Requisite series reactors for arc furnace transformers to reduce the short circuit stresses generated in transformer during the furnace operation
• Designed to withstand the harmonics generated due to furnace operation
• 'Tap Changer' options available in these furnace transformers, arc furnace transformers and electric arc furnace transformers.

We are offering distribution transformer. distribution transformers for industrial application is available in 3 or 1 phase version with primary voltages of up to 33 kv and secondary voltages ranging from 433 to 11000 v. The capacity range is up to 10000 kva. We manufacture single phase distribution transformers, three phase distribution transformers and industrial distribution transformers. these single phase distribution transformers and three phase distribution transformers are available with 'tap changer' options as well as "off circuit manually operated" and "on load tap changer" (oltc) with avr and rtcc panel. prime quality, low loss, high permeability "cold rolled grain oriented" silicon steel is used for core to achieve low no load losses. these industrial distribution transformers have electrolytic copper with insulating paper multi covered round wires and strips are used for both the primary and secondary windings to achieve low load losses. copper foil winding technology is used for high current sections to achieve following advantages: sustaining short circuit forces without any distortion in low voltage and high current windingshot spot in lv windings regulatedno transposition, stray losses are minimal. Thus total copper losses are also further reducedtotal copper losses reduced vis-a-vis standard losses. Thus heat dissipating area also reduces onan cooling with conventional pressed steel radiators or corrugated walls are provided for special transformers onaf cooling with fans for specific requirement. The terminal of these single phase distribution transformers and three phase distribution transformers arrangement for primary and secondary voltage are decided as per site requirements. Low viscosity transformer oil is provided with in numerous superior grades for specific usage.

URJA is managed by a group of technocrats having vast and varied experience in transformer design, development, production, quality control and servicing. Its modern manufacturing plant with state-of-the-art manufacturing and testing facilities as per IS, IEC & ANSI standards, accredited to ISO-9001:2008, 14001:2004, 18001:2007 by Moody International, believing in producing excellent quality products to its customers.

URJAs strength lay in good marketing network, stable customer relationship and commitment to the highest levels of service and excellence.
Renowned for its flexibility in repair of many different types and brands of transformers URJA has completed a multitude of contract for repairs. URJAs e-con.tek Transformers having Low Loss and High efficiency designs incorporates more copper, resulting into Less power consumption.

Hermetically sealed transformer is a transformer design which has no conservator. Here the dielectric insulating fluid in the transformer tank is completely sealed and is in zero contact to the atmosphere. The design avoids air in the transformer tank thereby avoiding sludging and oxidation of the dielectric fluid.

Hermetically sealed transformers are totally maintenance free and are particularly suited for use in exposed outdoor environments such as moisture, salt or dust laden atmospheres. They are used extensively in chemical plants, oil and gas terminals where poor accessibility makes regular maintenance impracticable. Transformers immersed in synthetic coolants are suitable for use indoors with adequate ventilation or near to the load center where oil would not be considered environmentally acceptable.

Normally these type of transformers are accommodated by devices that measure heat related volume variations. Gas cushion is used to compensate the volume variation due to heat. Normally the gas is nitrogen. This gas is thermally uncoupled from the dielectric liquid.

in cast-resin dry-type transformers, the complete encapsulation of primary and secondary winding in epoxy resin prevents penetration of moisture into windings. The cast resin offers very good protection against adverse ambient conditions. These transformers can work without disruption of service at 100% humidity.

due to the high grade insulation material, coils are non hygroscopes & the transformer can be switched on directly without pre-drying even after a long period of service interruption.

contrary to the conventional dry type transformers the cast coil transformers are better in respect of impulse voltage withstand strength.

higher dynamic short circuit withstands strength as compared to oil immersed and conventional dry type transformers because of fibre glass reinforced epoxy encapsulation. No partial discharges can occur during operation. The insulation material used is glass fibre reinforced with epoxy resin of class 'f' which can withstand wide temperature variation. Due to high quality insulation material the transformer is practically non-inflammable by an electrical arc, special fire protection measures are not required.

due to encapsulation of coils with cast resin the coils dimensions are stable & no coil tightening is required to maintain the short circuit strength. Also no check of oil level and electrical insulation/oil is required. This leads to saving in cost on account of maintenance.

as cast resin transformers are solidly cast, problem associated with oil filled transformers like oil leakage and pilferage of oil is completely avoided.

these transformers are generally smaller in dimensions and lesser in weights. The construction and installation cost for the sub-station can be reduced by adopting dry type transformers.

without fire or danger of explosion, it is possible to place the transformers near to the load centre. Also, these transformers do not need construction of special fibre brick walls or oil pits, which reduces the overall civil works. Additionally, since lt cables are not required, thers is also saving in cost on account of expensive cable laying works.

since no oil is used in these transformers, there are no chances of contamination of ground water due to oil leakage.

We are offering furnace transformer. we offer furnace transformers and arc furnace transformers for arc furnace/ submerged arc furnace/ induction furnace applications with capacity of 10 mva and primary voltage up to 33 kv class. The secondary voltages of these arc transformers suit furnace specifications with 6 and 12 pulse operations. specifications: "off circuit manually operated" and "on load tap changer" (oltc) with avr and rtcc panel ofwf cooling with onan cooling optionalonan cooling with conventional pressed steel radiators requisite series reactors for arc furnace transformers to reduce the short circuit stresses generated in transformer during the furnace operation designed to withstand the harmonics generated due to furnace operation'tap changer' options available in these furnace transformers, arc furnace transformers and electric arc furnace transformers.

We are offering dry transformers - vpi. dry type transformers are suitable for indoor installations in explosive atmospheric areas and populated locations such as malls, multiplex etc. These dry type transformers have f or h insulation class with or without enclosure as per the site requirement. dupont nomex insulating material is used to secure the windings in place during vacuum and pressure impregnation process with superior class of resin to suit highly humid / dusty atmosphere & free from fire hazard. The result is a coil that exhibits high short circuit protection due to the tightly bond conductors comparable to completely resin encased molded transformers at a substantially reduced cost. dry transformers are very compact in sizes and hence suitable for basement installations in high rise buildings etc. Dry transformers are available with low losses giving savings over long service periods. Periodical vacuum cleaning of winding surface is the only maintenance. The capacity range of these iron core transformer is up to 2000 kva with primary voltage up to 11 kv class & secondary voltage between 433 to 6600 volts. we offer wide range of dry type transformers, dry transformers, dry type distribution transformers, dry distribution transformers, dry type electrical transformers, iron core dry type transformer, industrial dry type transformers, industrial iron core dry type transformer, dry type transformer, iron core dry type transformers, iron core dry type transformer, compact dry type transformers.

We are offering converter duty transformer. converter duty transformers are used as set up transformer from generator to line voltage. Converter duty transformers have range up to 10 mva with the voltage capacity of up to 33 kv. Converter transformers and heavy duty transformers have very durable and hassle free to be used by desired clients. It comes with an automatic on/off cooling option. We offer these converter duty transformers and heavy duty transformers at a competitive price. one of the main differences from other types of converter transformers is that the load currents contain higher harmonics due to the distorted waveform. The converter to the transformer causes the distorted current waveform. This has to be considered current leads to higher losses & temperatures in the transformer. Network regulations also require reduction of harmonic distortion. the most common use for converter transformers are found in applications such as: variable speed drives (vsd)aluminium electrolysisdc arc furnacegraphitizing furnacestraction substationscopper refining

We are offering earthing transformer. earthing up to 10 mva 33 kv - earthing transformers are used to create a neutral point in a three-phase system, which provides possibility for neutral earthing. The earthing can be through an arc-suppression reactor, a neutral earthing reactor or resistor or directly in these earth transformers. Earthing transformers are usually oil immersed and may be installed outdoor. In cases where a separate reactor is connected between the earth transformer neutral and earth, the reactor and the transformer can be incorporated in the same tank. neutral earthing transformers are normally provided in 3-phase system, which is without neutral and earth fault protection. neutral earthing transformer is having zig-zag (interstar) winding to achieve the required zero phase impedance. In addition an auxiliary winding can also be provided to meet the requirement of auxiliary power supply in these earthing transformers. onan /onaf cooling with conventional pressed steel radiators. The range includes up to 33 kv systems and as per the site requirements.