Distribution & Power Transformer
Power
H.T. Transformers with Built in Automatic Voltage Stabilizer
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H.T. Build in AVR
It is a very altogether different product basically a combination of Standard Distribution Transformer and HT Automatic Voltage Regulator. The Standard Transformer with OLTC can correct limited voltage variation in certain steps where as Built-in operates steplessly monitoring the output voltage continuously.
The incoming fluctuating H.T. supply is initially stabilized and then fed to the step down transformer and thereby the L.T. Output is maintained within ±1% accuracy. Built – in has the following advantages:
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H.T. AVR
2MVA HT AVR AT BPCL NOIDA
H.T. Automatic Voltage Stabilizers are used to get stabilized H.T. input voltage, irrespective of the voltage.
variations received from electricity supply authorities. Additionally, these stabilizers also prevent the transformer and other electrical equipment from getting overloaded. Wide voltage variation ranges are taken care continuously and in on load condition. The variations of more than ± 1% of the rated output voltage are sensed through solid state relay. This relay operates on 230 V, 110Ø supply and sends signals to the stabilizer’s motor, which drives the roller mechanism in lower and higher direction to bring voltage to the rated output voltage within +- 1%. The Accuracy of +-1% may vary depending on the specific requirement of customer.
H.T. Automatic Servo Voltage Stabilizers have helical coils mounted on a conventional laminated core. Carbon rollers are assembled on a fibre glass carrier board and are traverse to the length of the coil track. The rollers are connected to the electric output terminals. Nearby the regulating coil, a number of compensating winding is connected in parallel, which are short circuited to reduce the effect
H.T. Automatic Voltage Regulator Step less Linear Rolling Contact Type RANGE: Up to 15000 KVA in 11 & 33 KV Class.
RECTIFIER (D.C. POWER SUPPLIES) – IGBT BASED RECTIFIERS
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Rectifiers (IGBT BASED)
RELIABLE’S make IGBT Rectifiers are designed to meet industrial application requirements. An insulated –Gate Bipolar Transistor (IGBT) uses relatively high frequency switching and pulse width modulation (PWM) technology for voltage and current regulation whilst a silicon controlled rectifier (SCR) uses relatively low frequency switching and phase shift technology.
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Rectifiers (Oil Cooled)
With Its easy convertibility from one voltage to another A.C. (Alternating Current) reigns supreme in the generation transmission and distribution Systems. Yet DC (Direct Current)/ DC power supplies for Electroplating Plants, Electro chemical plants, Copper, Aluminium & Zinc Refining all requires modest Voltage and high DC current. DC power is also required in other Industrial processes like Hydrogenation & Electrolysis. Such continuous Power Industries look for a ‘Reliable’ economical and trouble free form of DC Power supply Systems. ‘Reliable’ offers a complete range of Rectifier Equipments for all such application and provides Engineering, Design and Technical support in choosing the right solution / Equipment.
RECTIFIER (D.C. Power Supplies) – ROLLING CONTACT TECHNOLOGY
SERVO STABILIZER (AIR COOLED) UP TO 4000KVA
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Servo Stabilizer (Air Cooled)
Electricity is perhaps the most essential raw material used by commerce and industry today. The electricity produced in power plants is circulated through the electricity transmission and distribution networks and it is supplied/delivered to consumers; the quality of electricity (known as «Power Quality») is one of the important factors that determine the economic efficiency of both consumers and electrical networks.
Electrical devices are designed to work in distributing systems defined by set nominal values in terms of voltage and frequency (for example, 400V at 50Hz).
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Servo Stabilizer (Oil Cooled)
At the heart of the Voltage Stabilizer are the regulator coils. While some small capacity regulator coils are uncompensated, all larger capacity voltage stabilizer regulator are fully compensated.
Compensation is a method where by the naturally high reactance of long thin coils, used in the construction of the ‘Reliable’ Regulator coil is limited to a low value across the range of variation.
SERVO VOLTAGE STABILIZER (OIL COOLED)
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Distribution & Power Transformer
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