Transformers

Design & Development is the basic in manufacturing transformers, having highly qualified and experienced technical personnel's keeping eye upon the latest development in technology and the product. Our transformers are designed to meet all the latest national and international standards. Approval of our product by reputed National Inspecting Agencies, namely Engineers India Limited, RITES, Department of Industries, Haryana, CIL, SGS, CPWD, NIT and many other bodies has created trust and belief in the minds of customer about our product.

Servokon's Transformers are appreciated all over the world for its Strict Quality Measures & Testing Standards in all respect. Optimum efficiency is ensured by delicate proportioning of core and winding losses using CRGO M3 to MS MOH lamination, Electrolyte Grade 99.9% pure copper, with transposition in L.V. coil for current sharing in paraller conductors , electric grade press paper, board and mineral oil. Thus better regulation is achieved resulting in higher efficiency and longer life.

Transformers are subjected to all routine tests which includes :

• Insulation resistance test
• Resistance measures of winding
• Turns ratio test
• Polarity & phase relationship test
• No load losses measurement
• Impedance voltage test
• Short circuit test
• Dielectric test
• Leakage test of transformer tank

We offer distribution transformers of various ratings that are widely used by industrial sector, State electricity boards and housing complexes. We provide transformers of different rating and voltage according to the requirements of the client. Our distribution transformers are appreciated by the clients from all over India and abroad for optimum safety and heavy duty construction. Further, our range of Distribution Transformers is offered with cooling systems with on load and off load tap changing facility. Following are salient features of our Distribution Transformers:

• High Efficiency
• High Durability
• Low temperature rise
• Minimum maintenance
• Trouble free service
• Long life

Technical Specifications

Ratings	Upto 5000 KVA
Applicable Standards	IS, IEC, BS etc.
Cooling	ONAN, ONAF
Insulating Fluid	Mineral Oil to specification
Frequency	50 Hz, 60 Hz
Polarity	As specified
Primary voltage	11Kv/ 22 Kv/ 33 kV
Secondary Voltage	433 v (As required)
Winding material	Copper
Taping	On Load Tap Changer to provide +5% to -15% Taps in steps of 1.25% on the H.T. Side. Else, Off Circuit Tap Changer for ± 5% Taps on H.T. Side in steps of 2.5% each.
Impedance	In line with applicable standards
Insulation	Class 'A' (as required)
Vector Group	DYN 11

Dry distribution transformers in this size range are used to step down three-phase medium voltage to low voltage for power distribution. These transformers are used primarily in metropolitan areas (public buildings, offices, distribution substations) and are also found in industrial applications

Dry type transformers are an ideal solution for applications where the transformers have to be installed near their place of use. Close installation saves on the installation outlay of cabling while at the same time reducing losses in cables and terminals on the low-voltage side.

Dry type transformers are environmentally safe and suitable for indoor and outdoor applications. They provide excellent mechanical and short circuit strength, have no liquids to leak, and offer no danger of fire or explosion.

Dry-type transformers require minimum maintenance and provide long years of trouble-free service. Fire proof vaults and toxic gas venting systems are not required. With high impulse strength insulation systems, they will coordinate with all electrical system designs. Conservatively designed, the sound level is very low, making the Spang transformer desirable for indoor applications in commercial buildings.

We produce Transformers with Built-in HT Automatic Voltage Regulator. The equipment is basically a combination of HT-AVR with a standard distribution Transformer. The fluctuating voltage from 'Grid' is initially stabilized by the HT-AVR and then fed to the transformer resulting in the constant L.T. Output within + 1%accuracy and the Biggest advantage being the robust design of the equipment which does not demand regular maintenance.

Sometimes, it is observed that even after installing distribution transformers, the problem of fluctuating voltage remains on the LT side, resulting in improper function of electrical systems. The only smart way to tackle this problem is Built-in HT Automatic Voltage Regulator. These standard transformers can correct limited voltage variations and can not regulate the voltage in 'on load' condition. HT Transformers with Built-in HT Automatic Voltage Regulators are highly effective for isolating sensitive electrical equipment from spikes, DC leakage and line voltage transients. These systems can be used in various industrial and commercial applications.

Features:

• Better Efficiency
• Energy Saving
• Reduced Installation Cost
• Reduction in Electricity Bill
• Space Saving
• Low replacement cost

VARIAC is continuously Variable Auto Transformer, having a single layer winding on a toroidal core of high-grade cold rolled grain oriented (CRGO) steel. On one face of the copper winding along the periphery, a special durable contact surface is made. A Specially finished carbon brush slide smoothly on the surface. A contact arm holding the carbon brush fitted on the centre shaft and as the control knob is rotated the carbon brush slides over the winding and taps of a portion of voltage across the winding. Any desire voltage with in the Maximum range can be obtained by adjusting the position of the Brush. The calibrated dial show approximately output voltage at no load, when the input is at its rated value. Rotation of the arm by manual or motor drive delivers an output voltage from 0 to above line voltage.

Features:

• Coils made from high grade CRGO steel
• Simple rugged construction
• 99.9% pure copper
• High Efficiency
• Negligible wave form & power factor distortion
• Smooth & stepless voltage control
• Short time overload capacity
• Simple Installation & Connection
• Low temperature rise
• Long life with negligible maintenance
• High quality carbon brush used for current flow
• Spare carbon brushes provided up to 28 Amp
• Wide range of current rating 4 Amp. To 1200 Amp.

Applications:

• Servo stabilizer, rectifiers, battery charger
• Testing instruments
• Welding equipments
• College & universities
• Auditorium, hotels, conference hall, laboratories et

We offer a range of isolation transformer that are mostly used for decoupling of two circuits. It assists in shifting the power from one signal to other to without connecting the two circuits electrically. The perfect role of our range of isolation transformer is to use as power transformer and safety precaution. However, the bonding is eliminated completely, in case of isolation transformer. Our range of Isolation Transformers is appreciated by the clients for following features:

• High operating frequency
• Wide operating voltage range
• High Durability
• Low temperature rise
• Isolating Neutral & Earth
• Noise Reduction
• No Impedance matching required
• No need of extra Filter circuits

We offer an entire gamut of supreme quality Step Up/Step Down Transformers. A transformer is made from two or more coils of insulated wire wound around a core made of iron. When voltage is applied to one coil it magnetizes the iron core, which induces a voltage in the other coil, (frequently called the secondary or output). The turns ratio of the two sets of windings determines the amount of voltage transformation.

With a step up transformer or step down transformer the voltage ratio between primary and secondary will mirror the "turns ratio" (except for single phase smaller than 1 kva which have compensated secondaries). A practical application of this 2 to 1 turns ratio would be a 480 to 240 voltage step down. Note that if the input were 440 volts then the output would be 220 volts. The ratio between input and output voltage will stay constant. Transformers should not be operated at voltages higher than the nameplate rating, but may be operated at lower voltages than rated. Because of this it is possible to do some non-standard applications using standard transformers.

Single phase transformers 1 kva and larger may also be reverse connected to step-down or step-up voltages.

The primary components for voltage transformation are the transformer's core and coil. The insulation is placed between the turns of wire to prevent shorting to one another or to ground. This is typically comprised of mylar, nomex, kraft paper, varnish, or other materials.

As a transformer has no moving parts, it will typically have a life expectancy between 20 and 25 years.

Applications:

• Printing Machines
• Imported Machines working on 110v
• Imported Appliances

Constant Voltage Transformer (CVT) are produced by using state-of-art Ferrow resonant technology. It gives instantaneous voltage regulation, no transient, no spikes, noiseless opretaion and high isolation between inout and output.

Features :

• Minimal Maintenance
• Very Fast Correction Speed
• No Semi Conductor or moving part used

Application :

• Telecom Equipment
• Fax
• Bio-med equipments
• color photography lab
• High Sensitive machines

Any kind of special Transformer can be manufactured on request, Like : Neutral Transformer, Lighting Transformer etc.