Nachiketa Technology Gangyal, Jammu, Jammu & Kashmir

The term "Variac" (from "vary AC") has become generic, and commonly refers to any continuously variable autotransformer. Variac is a trade name, and has changed ownership several times since early 1930s when the device was first produced. Other trade names include Powerstat and Dimmerstat, and I'm sure there are many others. Some manufacturers simply call their versions "variable voltage transformers". The trade name Variac has been owned or licensed by Warburton Franki (in Australia), General Radio (Genrad), Claude Lyons, Statco and probably a few others as well. I shall use the term Variac (small "v") in its generic form - this does not imply that variable transformers with the Variac branding are more desirable than others, only that I'm used to the term having used it all my working life. The Variac is a special type of transformer, generally having a single winding and a single layer. The top section of the winding is flattened and machined to remove the insulation and provide a smooth surface for the sliding brush that's used to select the voltage needed. Some variations use a roller instead of a brush, but there seems to be no specific advantage. I still have my first Variac (branded as such) that I bought sometime around 1960, and it's been dismantled for service once in all that time - see Figure 1a. Figure 1b is a Matsunaga 1kVA Variac - made in Japan especially for use in Australia. It is described as a "Deluxe Slide Regulator" (sic).

We offer an array of precision engineered vacuum circuit breaker (VCB) indoor panel which are manual or motor operated and used in 11KV/33KV systems. Features : These are widely acknowledged in a number of industries for good number of salient features which include: Extensible & modular construction. High reliability.Re strike free.Emergency tripping arrangement without opening breaker chamber front door.Horizontal draw out type.Conforming to IS2147, IEC-62271-100, IEC-60298 and IEC-60694.Self aligning type cluster contact for robust design.Fully interlocked for operational safety.Totally compartmentalized & compliance to internal arc as per standards.Stored energy type spring closing mechanis.

The term switchgear, used in association with the electric power system, or grid, refers to the combination of electrical disconnects, fuses and/or circuit breakers used to isolate electrical equipment. Switchgear is used both to de-energize equipment to allow work to be done and to clear faults downstream. This type of equipment is important because it is directly linked to the reliability of the electricity supply. We bring forth a large range of premium quality Switchgear Panels that is in high demand in the national and international market. Our Switchgear Control Panels are incorporated with latest technology parts that are procured from the reliable vendors. Our quality control inspectors keep a close watch on the production process that ensures optimum quality of the Switchgear Control Panels. Robust structure of our Switchgear Control Panels assure high durability and low maintenance cost. Easy to install and handle, our Switchgear Control Panels provide long lasting excellent performance. We have firmly positioned ourselves as one of the eminent Switchgear Electrical Control Panels manufacturers and Suppliers based in India.

SERVO VOLTAGE STABLIZERS ........................................................................Voltage fluctuation is a common phenomenon in every part of the country. Automatic Voltage Controller (Stabilizer) is an equipment to obtain constant voltage tram flucfuating supply system. The industrial units running round the clock usually face the problem of low & high voltage. 90% of industrial load is of motors. Electric motors draw considerably high current at low & high voltage. This higher current affects the electric motors (particularly smaller capacity motors upto 7.5 H.P.) in these ways: . Higher current produce higher losses in Electric motors which cause premature failure of winding. Higher current produce higher losses in Electric motors which cause premature failure of winding. These higher current of Electric motors also increase losses of Cables, Switches, Transformer & other associated equipments. This higher current of Electric motors require 15-20% higher setting of over load relay to avoid frequent tripping of motor's starter. Higher set­ting of over load relays have very little safety margin against single phasing and over loading conditions. the installation of the stabilizer and maintaining 390/400 volts, the motor will operate smoothly drawing 15-20% lesser current and corresponding the relay setting can be reduced by 15-20%. In case single phasing occurs, the relay will trip in 40-50 seconds. The motor can withstand the high current for this period and will be safe. Also, the relays, contactors, switchgears , etc. incorporated with the motor will be safe.

The online UPS is ideal for environments where electrical isolation is necessary or for equipment that is very sensitive to power fluctuations. Although once previously reserved for very large installations of 10 kW or more, advances in technology have now permitted it to be available as a common consumer device, supplying 500 watts or less. The initial cost of the online UPS may be slightly higher, but its total cost of ownership is generally lower due to longer battery life. The online UPS may be necessary when the power environment is "noisy", when utility power sags, outages and other anomalies are frequent, when protection of sensitive IT equipment loads is required, or when operation from an extended-run backup generator is necessary. The basic technology of the online UPS is the same as in a standby or line-interactive UPS. However it typically costs much more, due to it having a much greater current AC-to-DC battery-charger/rectifier, and with the rectifier and inverter designed to run continuously with improved cooling systems. It is called a double-conversion UPS due to the rectifier directly driving the inverter, even when powered from normal AC current.  

An uninterruptible power supply, also uninterruptible power source, UPS or battery/flywheel backup, is an electrical apparatus that provides emergency power to a load when the input power source, typically mains power, fails.A UPS differs from an auxiliary or emergency power system or standby generator in that it will provide instantaneous or near-instantaneous protection from input power interruptions by means of one or more attached batteries and associated electronic circuitry for low power users, and or by means of diesel generators and flywheels for high power users. Offline / Standby:-Offline / standby UPS. Typical protection time: 0–20 minutes. Capacity expansion: Usually not available The offline / standby UPS (SPS) offers only the most basic features, providing surge protection and battery backup. The protected equipment is normally connected directly to incoming utility power. When the incoming voltage falls below a predetermined level the SPS turns on its internal DC-AC inverter circuitry, which is powered from an internal storage battery. The SPS then mechanically switches the connected equipment on to its DC-AC inverter output. The switchover time can be as long as 25 milliseconds depending on the amount of time it takes the standby UPS to detect the lost utility voltage. The UPS will be designed to power certain equipment, such as a personal computer, without any objectionable dip or brownout to that device. 

MARSHALLING KIOSKS........................................................................For Power Transformer up to 400 MVAType tested for IP-55 at ERDAWith Oil Temperature & Winding Temperature IndicatorsFans & forced cooling pump starters, and automatic supply changeover facilityUsed for the marshalling of field cables. There are two sets of cables coming to the Kiosks, one originating from the field, while the other going to the control room Kiosks facilitates the criss-crossing and interconnection of both the set of cables

DC Distribution Board We are engaged in offering distribution boards, which are extensively used for domestic and industry purposes. Our range of distribution boards are manufactured using galvanized and electro- galvanized material. These are also helpful in preventing the electrical distribution system from various damages, which can be caused due to shot circuit, earth leakage and over load.Some of the salient features of our product:Easy to install and operateShort mounting timesAmple wiring space

FURNACE TRANSFORMERS .....................................................................................Standard Specifications of Furnace : Rating : Upto 5 MVA, upto 33 kV on primary side Standards : IS:2026 Types : Resistance furnace transformers Arc furnace transformers Induction furnace transformers Submerged arc furnace transformers Temperature class : 105/ 220 deg. C Either oil filled or dry type (upto 11 kV) Features : Special arrangement of tappings to get a wide range of secondary voltages and LT winding for large LT currents.Either with on-load/ motorised off circuit tap changers. Cooling arrangements like ONAN/ ONAF/ OFWF.Applications : Silicon carbide manufacture Steel melting Heat treatment Alumina manufacture  

We manufacture diverse range of control panels that are designed using latest technology to suit the varied needs of the clients. These panels also are used in diverse commercial applications and offers accurate longer and reliable operations.We offer highly customized & effective capacitor control panels. Our capacitor control panel are widely used in various industrial unit. Our panel came with a power circuit consisting of contractor, MCB and fuses. We offer a wide range of motor control panels. These are widely used to feed the larger loads and is available with power stabs. The main task of motor panel is to support high capacity industrial motors. Customization is our forte and all our products are offered as per the specific requirement of our client.We offer a wide range of power control centers to our clients. These are used in various sectors like industrial, commercial, heavy industries . Some of the features of our products are: Weather proof Integrated main switch fuse unit Contractors (Magnetic) Control circuit transformer High temperature controllers Voltmeter.

DISTRIBUTION TRANSFORMERS ....................................................................Nachiketa Manufactures a wide range of distribution and power transformers ranging from 10 KVA to 5000 KVA. These transformers can be free breathing or hermetically sealed. Conventional transformers are fitted with a conservator with breather for free breathing while hermetically sealed are without breathing with bolted cover. 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 undesirable. Transformers immersed in synthetic coolants are suitable for use indoors, with adequate ventilation, or near to the load centre where oil would not be considered environmentally acceptable. The liquid filled transformers can be supplied with cooling either by corrugations on the side of the tank or Pressed steel radiators mounted on tank body. Transformers can be filled with either oil or one of several low flammability synthetic fluids such as midel. Both types can be supplied with HV and LV Switchgear incorporated into substations. can supply conventional/hermetically sealed/bolted type, indoor/outdoor type, pole/platform mounted 3 phase, 50/60 Hz, oil immersed, ONAN/ONAF/ OFWF cooled, step up/step down, double wound with Al/Cu conductor, Continuous duty transformers from 5 KVA to 20 MVA upto 33 KV Class with ‘A’ Class Insulation and designed to withstand Short Circuit, & Impulse Test in accordance to IEC / BS / ANSI / IS / NEEMA.

CT & PT UNITS........................................................................ Current Transformers (CT) and Potential Transformers (PT) are used to lower the magnitude of the current and voltage to be measured. Say 100Amp current is flowing in a circuit and you want to measure it. If you connect an ammeter to measure the current the ammeter has to be built to handle that current. Or say if you want to measure current and voltage in a high voltage circuit at 220kV, you need properly insulated meters to withstand that voltage. The meters will be very big for that purpose. The CT and PT is used to solve this problem. The CT and PT works on the principle of transformer and lowers the current and/or voltage at a lower value which can be safely and easily measured. For energy measurement connect the CT and PT secondary to the terminal of the energymeter. However you need to select the proper CT and PT and if you are measuring 3phase power you need to connect the CT and PT as per the requirement. OR33KV Outdoor CT-PT UnitOur range of these 33KV outdoor CT-PT units are manufactured and tested to match the international quality. This unit has gained the trust of all our clients and the same is offered in the highest quality standard. This reliable range is offered at a competitive price and has its demand all over the country.

We exports and manufactures of control and rely panels.our panels deliver outstanding performance in terms of durability, simplicity and energy efficiency control and rely panels are Offered at cost effective prices,its also made as per given requirement of our clients. We offer our clients with a technologically advanced range of relay and control panels. These are used to operate in case of failure of mains. We manufacture our range using superior quality of raw material and components that ensures notable features like durability and accuracy. These are used for protecting and controlling power distribution process and are applicable in host of industries in the power generating process.