Transformer

Transformer

Able Transformers K4 offer complete line isolation, continuous noise filtering to eliminate harmonic distortion and enhanced common mode surge suppression internal low impedance isolation transformer component with Faraday Shield offers 100% isolation from the input AC line.

The Common Mode Noise and Normal Mode Noise are generated in the common Utility Mains due to the Parallel connection of the critical loads to the Noise generating loads. These High magnitudes noises occur between conductors due to switching action of the load connected in parallel to the sensitive loads. These noises are Isolated by ABLE ISOLATION TRANSFORMERS and safe guard the critical/precise loads like CNC/Medical/Software industry etc.,

We manufacture 1 KVA to 1500 KVA Capacity designed for isolating sensitive equipment’s from Line Voltage Transients, Spikes & D.C. leakage. Also removes EMI/RFI noise, utility switching transients and background spikes.

An isolation transformer is a transformer used to transfer electrical power from a source of alternating current (AC) power to some equipment or device while isolating the powered device from the power source, usually for safety. Isolation transformers provide galvanic isolation and are used to protect against electric shock, to suppress electrical noise in sensitive devices, or to transfer power between two circuits which must not be connected. Suitably designed isolation transformers block interference caused by ground loops. Isolation transformers with electrostatic shields are used for power supplies for sensitive equipment such as computers or laboratory instruments. Strictly speaking any true transformer, whether used to transfer signals or power, is isolating, as the primary and secondary are not connected byconductors but only by induction. However, only transformers whose primary purpose is to isolate circuits (opposed to the more common transformer function of voltage conversion), are routinely described as isolation transformers. Given this function, a transformer sold for isolation is often built with special insulation between primary and secondary, and is tested, specified, and marked to withstand a high voltage between windings.

Isolation Transformer: Any Double Wound Transformer is internally an isolation transformer as the primary and secondary are isolated from one another through insulation. ... UltraIsolation Transformer attenuates common mode noise and transverse mode noise and provides for noise or interference free power.

Product Description

The isolation transformer has two windings. i.e., the primary winding and the secondary winding. The primary winding takes the input from the supply, and the secondary winding is connected to a load and supply energy to the load.

When the output voltage of the transformer is greater than the input voltage, then such type of transformers is called step up transformer, and when the output voltage is less than the input voltage, then it is called a step-down transformer. A transformer in which receiving voltage and the sending voltage is same, then such type of transformer is called one to one transformer.

Technical Specification

NAME OF THE MANUFACTURER Able Electronic Services
HARMONIC K RATING K-4
SERVICE Indoor and Outdoor
TRANSFORMER RATIO 1:1 and 1:2
TYPE OF CONNECTION △/△ , △/Y , Y/Y , Y/△
RATED VOLTAGE:
a) PRIMARY 380 VAC, 400 VAC, 415 VAC
b) SECONDARY 415 VAC or 220 VAC
NO.OF PHASE 3 PHASES
OPERATING FREQUENCY 50/60 Hz
VECTOR GROUP DYn11 / Dyn21
OPERATING AMBIENT TEMP. IN DEG C 45 C
TYPE OF COOLING Air Cooled and Oil cooled
TYPE OF TRANSFORMER Shell Type
GRADE OF CORE MATERIAL CRGO / CRNO
CORE CONSTRUCTION Interleaved and Step Lap Construction
LOAD RATING Continuously rated
WINDING MATERIAL Electrolytic copper 99.9% and Aluminum
INSULATION MATERIAL Class 'F' & Class 'H' to Withstand 155/180 deg C Temperature
THERMAL WITHSTAND 155 Deg / 180 Deg
OPERATING HUMIDITY 0-90% non-condensing
ELECTROSTATIC SHIELD solid copper foil electrostatic shields
LINEAR HARMONICS ATTENUATION 100%
NON-LINEAR HARMONICS ATTENUATION More than 35%
DEGREE OF IP IP-20 & IP-41 or as per customer specification
IMPEDANCE Below 2%
REGULATION 2 to 3% for 100% change in current at unity P.F.
DC GALVANIC ISOLATION Greater than 500 Mega Ohms
OPERATING POWER FACTOR 0.8 Lagging to 0.8 Leading
DIELECTRIC STRENGTH 2500V for 60 Seconds as per IS(Indian Standard)
EFFICIENCY More than 98 %

Application

  • Engineering & Manufacturing (Railway, Oil & Gas, Construction)
  • Metal Cutting (CNC&EDM)
  • Textile & Apparel (Weaving, Knitting, Spinning, Dyeing & compacting)
  • Hospitals, Labaratories & Bio Medicals
  • Retail Showrooms, Restraurents
  • IT
  • Agriculture
  • Fuel Stations
  • Domestic Applications

FREQUENTLY ASKED QUESTIONS

  • What is Variable Auto Transformers (Variac)?

    Variac or variable auto transformer manufactured by Able is available with AC control voltage controls that offer continuous AC voltage supply. Variac ensures a distortion free output that is suitable for sensitive electronic appliances and equipment’s in residential areas and industries. Manufactured with cutting-edge technology, these auto transformers ensure a consistent linear regulation of AC voltage to provide high output and negligible waveform distortion. It is suitable way of controlling current, light, heat and motor speed with a voltage factor. This transformer finds its wide applications in Auditorium, hotels, conference hall, laboratories, College & universities,

    Welding equipment’s, Servo Auto Transformer, one single winding is used as primary winding as well as secondary winding i.e primary and secondary shares the common single winding. The primary is electrically connected to the secondary, as well as magnetically coupled to it. Auto transformers are often used to step up or stepdown voltagesvaryingcontinuously from 0V to 270V/1 PH or 320V/1 Ph depending on construction, If Three Phase also 525V Possible An autotransformer has a single winding with two end terminals and always having one terminal in common with the primary voltage. The primary voltage is applied across two of the terminals, and the secondary voltage is taken from two terminals. The autotransformer develops a voltage in proportion to its number of turns since the volts-per-turn is the same in both windings. In an autotransformer part of the current flows directly from the input to the output and the remaining part is obtained by transformer action, therefore, an autotransformer work as the voltage regulator. stabilizer, rectifiers, battery charger and Testing instruments

  • Construction of Variable Auto Transformers (Variac)
    • There is a single layer winding on toroidal core of high-grade cold rolled grain oriented (CRGO) steel
    • A special durable contact surface is made on one side of the copper winding and a specially finished carbon brush slide smoothly on the surface
    • A contact arm with a carbon brush is fitted on the center shaft
    • As the control knob is rotated, the carbon brush slides over the winding
  • Features of Variable Auto Transformers (Variac)
    • Can enhance the output voltage in excess of twice the input voltage
    • Any desired voltage within the maximum range can be obtained by adjusting the carbon brush
    • Calibrated dial show approximately output voltage at no load
    • The contact arm can be moved both manually and by motor
    • Delivers an output voltage from 0 to above line voltage
    • Constructed with 99.9% pure copper
    • High grade CRGO steel is used for constructing coils
    • Low temperature rise
    • Wide assortment of current rating 4 Amp. To 1200 Amp
    • Spare carbon brushes provided up to 28 Amp
    • High quality carbon brush
    • Step-less voltage control
    • Short time overload capacity
    • Maintenance cost
  • Application of Variable Auto Transformers (Variac)
    • Auditorium, hotels, conference hall, laboratories etc.
    • Servo stabilizer, rectifiers, battery charger
    • Welding equipment’s
    • Testing instruments
    • College & universities
  • What is Able Single-Phase Variable Auto Transformer?

    Able specializes in manufacturing and supplying high quality automatic voltage stabilizers to meet the requirement of different industries as well as residential units. This stabilizer has a transformer and a power control circuit for controlling output AC voltage. The control circuit controls the voltage or power automatically and regulates it to a level that is set or required. The best part is that in the entire operation, the voltage regulator doesn’t require any manual interruption, it functions automatically. Once it is set, you need not to check the voltage every time the main voltage fluctuates. These power regulators are generally used with the home equipment’s like refrigerator & air conditioner.

    As automatic voltage stabilizers are loaded with plethora of features, they are highly demanded in residential applications for protecting Refrigerator, Deep freezer, Bottle and water coolers, BOD incubators, Air conditioning appliances from voltage fluctuation. We are a quality concerned company that doesn’t compromise with the quality during the manufacturing process and even the final dispatch is done under the supervision of technical experts.

  • Features of Able Single-Phase Variable Auto Transformer
    • Able Voltage Stabilizers are easy to install and operate
    • Low maintenance required
    • Digital IC controlled circuit, which make the stabilizers automatic in nature
    • Protects the equipment or electronic appliances against voltage fluctuation
    • Time delay relay modes
    • Ensures the equipment or electric device’s safety
    • Seek, compact and elegant design
    • Consumes very low power
  • Application of an Able Single-Phase Variable Auto Transformer

    These automatic voltage stabilizers are used for domestic purpose:

    • Refrigerator
    • Deep freezer
    • Bottle and water coolers
    • BOD incubators
    • Air conditioning appliances
  • What is Able Three Phase Variable Auto Transformer?

    Able specializes in manufacturing and supplying high quality automatic voltage stabilizers to meet the requirement of different industries as well as residential units. This stabilizer has a transformer and a power control circuit for controlling output AC voltage. The control circuit controls the voltage or power automatically and regulates it to a level that is set or required. The best part is that in the entire operation, the voltage regulator doesn’t require any manual interruption, it functions automatically. Once it is set, you need not to check the voltage every time the main voltage fluctuates. These power regulators are generally used with the home equipment’s like refrigerator & air conditioner.

    As automatic voltage stabilizers are loaded with plethora of features, they are highly demanded in residential applications for protecting Refrigerator, Deep freezer, Bottle and water coolers, BOD incubators, Air conditioning appliances from voltage fluctuation. We are a quality concerned company that doesn’t compromise with the quality during the manufacturing process and even the final dispatch is done under the supervision of technical experts.

  • Features of Able Three Phase Variable Auto Transformer
    • Able Voltage Stabilizers are easy to install and operate
    • Low maintenance required
    • Digital IC controlled circuit, which make the stabilizers automatic in nature
    • Protects the equipment or electronic appliances against voltage fluctuation
    • Time delay relay modes
    • Ensures the equipment or electric device’s safety
    • Seek, compact and elegant design
    • Consumes very low power
  • Application of Able Three Phase Variable Auto Transformer

    These automatic voltage stabilizers are used for domestic purpose:

    • Refrigerator
    • Deep freezer
    • Bottle and water coolers
    • BOD incubators
    • Air conditioning appliances
  • How the Isolation Transformers significantly reduce voltage spikes?

    The isolation transformers significantly reduce the voltage spikes before reaching the secondary windings because of the rising time of current through an inductor.

    We know the current in an inductor rises at an exponential rate. As the current increases – the expanding magnetic field cuts through the conductors of the coil and induces a voltage that is opposed to the applied voltage (by virtue of Faraday’s law of electromagnetic induction and Lenz’s law) The amount of induced voltage e α L * (di/dt) is proportional to the rate of change in current. The faster the current tends to rise; the higher will be the opposition to the sudden change in current.

    Spike voltages and currents are usually of a very short period, and they rise very rapidly. Such a surge causes the opposition to the change also to increase that rapidly.

    Therefore, in case an inductor is introduced in between the circuit the time taken by the spike to reach the secondary winding will significantly increase, and in the meantime, spike will get considerably reduced or could be even completely eliminated.

    We, Able is an established and renowned manufacturer based out of India and is catering to entire pan India in power equipment like Servo Stabilizers and all type of transformers including isolation transformers for domestic households and other industrial applications.

    We have a proven track record of supplying quality transformers and voltage stabilizers to various industries, commercial setups, residences, and the utility. We do provide consultancies services and customized transformers too.

  • What are all the losses occur in Transformer?

    Iron losses, copper losses, hysteresis losses, eddy current losses, stray loss, and dielectric losses. The physical phenomenon losses occur thanks to the variation of the magnetization within the core of the transformer and also the copper loss occur because of the transformer winding resistance.

  • What is Auto Transformer?

    An Auto Transformer is a transformer with only one winding wound on a laminated core. An auto transformer is similar to a two winding transformer but differ in the way the primary and secondary winding are interrelated. A part of the winding is common to both primary and secondary sides.

    Explanation of Auto Transformer with Circuit Diagram

    In an ordinary transformer, the primary and the secondary windings are electrically insulated from each other but connected magnetically as shown in the figure below. While in auto transformer the primary and the secondary windings are connected magnetically as well as electrically. In fact, a part of the single continuous winding is common to both primary and secondary.

    The primary winding AB from which a tapping at C is taken, such that CB acts as a secondary winding. The supply voltage is applied across AB, and the load is connected across CB. The tapping may be fixed or variable. When an AC voltage V1 is applied across AB, an alternating flux is set up in the core, as a result, an emf E1 is induced in the winding AB. A part of this induced emf is taken in the secondary circuit.

  • Difference Between Auto Transformer & Isoaltion Transformer

    There are several differences between the autotransformer and the isolation transformer. One of the major differences between them is that the autotransformer has only one winding whereas the conventional transformer has two separate windings. The other differences between them are explained below in the form of the comparison chart.