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Electrical Rectifiers

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We design and engineer tailor-made electricity rectifiers that are suitable for marginal overloading conditions. Our power rectifiers are available in various capacities ranging from 200 A to 15000 A and different output DC voltage. These rectifiers are very suitable for various electrochemical processes including anodizing, electroplating, hydrogenation etc.

The rectifiers are designed for 3 phase 50 Hz, AC supply for a voltage range of 380-440 V. We can also design and manufacture power rectifiers for 60 Hz, AC supply for any requisite voltage range.

Salient Features:

Compact Design
Suitable for corrosive industrial sites
Minimum Power Losses
Less Power Consumption
Low Maintenance
Trouble Free operation
Long service Life

Technical Specifications:

Input Voltage	380 - 440 V, 3 Phase, 50 Hz AC supply
Output Voltage	Fixed rated/variable
Output Current	Maximum
Temperature Rise	Less than 45°C
Efficiency	Dependent on voltage current rating
Ripple Content	Less than 5%

DC Output Control

We provide our electricity rectifiers with DC output control that control the output of voltage/current by varying input voltage/current. In our rectifiers, mostly roller type voltage regulators are used as DC output control. We use vertical coil type rolling carbon regulator.

Why roller type regulator is superior to thyristorised control in rectifier?

The technology of rolling carbon roller regulators is technically advanced than thyristorised control.
Regulator technology is recognized globally for higher efficiency and effectiveness.
The technology of regulator is available to only reputed manufacturers worldwide.
The cross-section area of copper in carbon regulators is three times larger than conventional one. It ensures 1/6 or 20% less losses.
In regulator technology, the roller moves on both sides of the coil to provide ± 440 V or ± 254 V output.
The 'Q' connection of the rectifiers has half the line current, ensuring less power losses.

Basic Circuit of Rectifier

Carbon Roller Assembly and Diode

Advantages of Roller Type Regulator than Conventional Rectifier

Roller Type Regulator	Thyrsorised Controller
Power factor is high - over 98%.	The power factor ranges between 50% to 75%.
There is no wave distortion at any load resulting the electrical wave from like a moving wheel.	Due to the wave form distortion, the electric wave represents a wheel cut by 50%.
The system is simple and can be easily repaired/maintained.	The system is specialized and need specially trained experts for repairing/maintenance.
Carbon roller, which rolls on a coil, has longer service life.	Carbon brushes, which slide on coil, have less service life due to sliding on coil.
The copper section for particular current is 3 times higher in roller regulators than conventional.	Copper section for particular current is 1/3 than roller regulator type rectifiers.
Overall losses are less.	Overall losses are higher.