POWER is an ISO 9001:2008, DUN BRADSTREET (862376458), IEC, FGI, DIC, EEPC & NSIC registered company. Having five manufacturing plants in India. We are engaged in the manufacturing of Industrial Transformers up to 10 MVA (Epoxy Cast Resin Construction, Dry Type, Oil Cooled) low and medium voltage, Industrial Automatic Voltage Stabilizer ranging up to 7000 KVA capacity (U.K. based Brentford type), Variable voltage supply (0 – 33000 Volts), Special Purpose Transformers (step up / step down, auto transformers, Ultra Isolation Transformers), Rectifier equipments from 0-1500 Volts and up to 25,000 Amps. for Industrial applications.
Packaging & Shipping
Within 30 Days
WOODEN PACK SUITABLE FOR SEA or AIR.
Electrical transformers, or simply transformers are the electrical devices meant for transforming the electric energy. The basic function of a transformer is to alter the voltage, usually from high to low. In other words, a transformer solves the purpose of transiting the power from the power plants to houses, offices, markets, malls, etc., in an appropriate state. Nowadays, electrical transformers are available in several different types. Also, the size of electrical transformers vary according to the area of their application. For instance, the transformers required for power stations are multi-ton units, which are large and bulky; electrical transformers used on electric poles are intermediate units, which are medium sized; electrical appliances in homes, offices, etc., require compact transformers.
Electrical transformers manufactured by Power Engineers & Consultants are precisely and efficiently engineered to render optimum value for your money. Our transformers ensure safe and economical transfer of current from the main power supply to the relevant equipment. Our range of electrical transformers is mentioned below:
Special Purpose Transformers The special purpose transformers found their application in areas where the voltage requirement of the machines available differ significantly from the standard voltage. Our special purpose transformers are at the forefront in the industry. We strictly adhere to the international quality standards while manufacturing these transformers. We also entertain custom requirements up to 5000 kva.
Power Distribution Transformers The main function of a power distribution transformer is to transform the electrical supply from the main source into a predefined voltage, which should be appropriate for the destination equipment. We use high quality materials and advanced production techniques for manufacturing these transformers. We are also capable of custom designing these transformers according to the client's specifications. Our power distribution transformers are primarily demanded by large manufacturing units, electricity boards, and windmills.
Ultra Isolation Transformers Ultra isolation transformers are considered ideal for eliminating line disturbances and preventing faulty and erratic operation of certain sensitive equipment like computer, computerized machines, medical equipment, CNC machines, digital communication telemetry systems, and so. We are quite specialized in manufacturing this particular variety of transformer. Our ultra isolation transformers are highly effective in eradicating the disturbances generated in consequence of the noisy equipment load which get injected into the power line. These transformers are also custom engineered by us to suit the specific needs of our clients.
Voltage Optimisation (or Voltage Power Optimisation) is the name given to an electrical energy saving technique, whereby a specialist optimisation device is installed in series with the mains electricity supply to site to give an optimum supply voltage for the site’s equipment, and improve power quality by balancing phase voltages, and filtering harmonics and transients from the supply. The type of device used determines whether the power supply is being ‘optimised’ or merely reduced (voltage reduction can be achieved using automatic voltage controller) Voltage optimisation technology gives the end-user the ability to optimise their supply locally, correcting power quality problems from the grid, and is designed to do so very efficiently. In the UK and Europe, voltage optimisation units fitted have achieved average energy savings of around 13% over the last five years, making this one of the fastest-growing energy saving techniques on the market. Major businesses and Public Sector organisations have adopted Voltage Optimisation as a front-line energy saving measure.
Common Power Quality Problems
Over voltage refers to voltage higher than the voltage at which equipment is designed to operate most effectively. It causes a reduction in equipment lifetime and increases in energy consumed with no improvement in performance. The 16th edition of the Electricians Guide BS7671 makes the following statements in relation to over voltage: “A 230V rated lamp used at 240 will achieve only 55% of its rated life” “A 230V linear appliance used on a 240V supply will take 4.3% more current and will consume almost 9% more energy.” Various technologies can be used to avoid over voltage, but it must be done so efficiently so that energy savings resulting from using the correct voltage are not offset by energy wasted in the device used to do so.
Effects on electrical loads
A common misconception as far as voltage power optimisation is concerned is to assume that a reduction in voltage will result in an increase in current and therefore constant power. Whilst this is true for certain fixed-power loads, most sites have a diversity of loads that will benefit to a greater or lesser extent with energy savings aggregating across a site as a whole. The benefit to typical equipment at three phase sites is discussed below.
Three Phase AC Motors
Three phase AC induction motors are probably the most common type of three phase load and are used in a variety of equipment including refrigeration, pumps, air conditioning, conveyer drives as well as their more obvious applications. The de-rating effects of over voltage and three phase imbalance on AC motors are well known. Over voltage results in saturation of the iron core, wasting energy through eddy currents and increased hysteresis losses. Drawing excessive current results in excess heat output due to copper losses. The additional stress of over voltage on motors will decrease motor lifetime. Avoiding over voltage does not affect the motor speed since this is a function of the supply frequency and the number of poles in the motor provided the motor is correctly loaded. Nor does it reduce the efficiency of the motor and so substantial energy savings can be made through reducing iron and copper losses. This is especially apparent if the motor application means that it experiences a variety of loading conditions since the motor efficiency is further reduced with both over voltage and less than full loading.
Since lighting loads are in use for a high proportion of the time, energy savings on lighting equipment are extremely valuable. Incandescent lighting is particularly susceptible to wasting energy and decreased lifetimes at high voltages, as the previous extracts from the Electricians Guide illustrate. However, other types of lighting can also benefit from improved power quality, including systems with resistive or reactive ballasts. Fluorescent lighting is more efficient than incandescent lighting and there are also types of electronic voltage optimisation control systems for high-frequency lighting, which would not see an improvement in lifetime or energy consumption on the same level as incandescent lighting. However, lighting controllers and ballasts are responsible for generating high levels of harmonic distortion, which can be filtered with a voltage optimiser, in addition reducing the need for lighting controller. A common concern is that some lighting will fail to strike at lower voltages. However, this should not occur since the aim of voltage optimisation is not simply to reduce the voltage as far as possible, but to bring it to the voltage at which it was designed to operate most efficiently.
Harmonics are current and voltage waveforms at a higher frequency than the fundamental 50Hz main supply and occur at multiples of the fundamental. Harmonics are caused by non-linear loads, which include types of power supply for computer equipment, variable speed drives and many transformers. “Triplen” harmonics (odd multiples of the third harmonic) result when phase voltages are not balanced in a three phase power system and accumulate in the neutral, causing wasteful currents to flow. The possible effects if the level of harmonics, known as total harmonic distortion becomes too high include damage to sensitive electronic equipment and reduction in the efficiency of the HV transformer. The efficiency of electrical loads can be improved by attenuating harmonics at the supply, or by preventing their generation.
Phase voltage imbalance
Most medium to large industrial and commercial sites are supplied with 3-phase electricity, which is transmitted from the national grid in 120º phase intervals. Imbalance between the three phases causes problems somewhat similar to those of harmonics, for example heating in motors and existing wiring leading to wasteful energy consumption
Power factor and reactive power
The power factor of an electrical supply is the ratio of the real power to the apparent power of the supply. It is the useful power used by the site divided by the total power that is drawn. The latter includes power that is unusable, so a power factor of 1 is desirable. A low power factor would mean that the electricity supplier would effectively supply more energy than the consumer’s bill would indicate and suppliers are allowed to charge for low power factors. Reactive power is the name given to unusable power. It does no work in the electrical system, but is used to charge capacitors or produce a magnetic field around the field of an inductor. Reactive power needs to be generated and distributed through a circuit to provide sufficient real power to enable processes to run. Reactive power increases significantly with increasing voltage as the reactance of equipment increases. Correcting this with voltage optimisation will therefore lead to a reduction in reactive power and improvement in power factor.
Energy and Emissions Savings
The energy savings achieved by voltage optimisation are an aggregation of the improved efficiency of all equipment across a site in response to the improvements in the power quality problems outlined above. It has been and continues to be a key technique for savings in energy consumption.
We are engaged in manufacturing Power Distribution Transformer to meet the present-day needs of effective power distribution in various establishments. We have installed facility to manufacture Oil-filled Power and Distribution Transformers up to 10 MVA, 66 KV Class. The tested range of Power Distribution Transformers can also be customized to meet the requirements of individual, Industrial, commercial, co-generation and utility services. The Power Distribution Transformers can be provided with a variety of terminations to meet individual requirements for new installation, replacement etc. Applications :
Domestic and Consumer Transformers
Wind Mill Power transmission
Standard Fitting :
Rating & diagram plate .
Earthing terminals – 2 Nos.
Lifting lugs for complete transformer.
Air release hole with plug.
Oil filling hole with plug on conservator.
Oil conservator with drain plug.
Dehydrating breather (1 No.) sillicagel type with oil seal & connecting pipe.
Prismatic oil level indicator – 1 No.
Drain valve with plug – 1 No.
Drain cum bottom filter valve with plug.
Externally operated off circuit tap changing switch.
Under base with flat bi-directional treaded rollers.
Pressure relief valve without electrical contacts.
Filter valve with plug.
LV additional neutral- out door bushing – 1 No.
H.V.TERMINALS – BARE BUSHING.
L.V.TERMINALS – CABLE BOX.
Magnetic oil level gauge with low oil level alarm contacts
Oil temperature indicator with electrical contacts for alarm and trip .
Winding temperature indicator with electrical contacts for alarm and trip.