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The Units are made in natural oil immersed construction. Any Electrodeposition process is always associated with acidic and corrosive fumes and dust. Any contact with these fumes and dust obviously reduces the life and reliability of the Rectifier. Oil immersed construction offers best protection to the rectifier unit in this regard and therefore increases the life enormously. The dimmerstat is always housed in a separate tank. For rectifier units up to a maximum output capacity of 10 KW, the transformer and the rectifier are housed in one single tank. For higher Capacities separates tanks for transformer and rectifier are used. For rectifier units of current rating of 4000 amperes and above the rectifier is also supplied in two tanks for better cooling.
If the customer can guarantee that sufficient precaution is taken to see that corrosive fumes and dust do not come in contact with the rectifier unit, we will be pleased to make special offers for units in Air Cooled or combined Oil/Air cooled construction.
The main supply is to be connected to the variak. Input terminals by a cable of proper size through a switch fuse unit. The cable of same size should be used from connections from variak output to the primary of the transformer. If the transformer and rectifier are supplied in more than one tank the aluminum busbars of proper sizes for interconnection between various tanks are supplied free with the rectifier unit. The output busbars are brought out bare, to which the output connections should be made by busbars of proper size.
The units can also be supplied for remote control or automatic control of output. For remote control a separate control panel can be provided to operate the motor of the variak by means of push buttons & to indicate the output voltage and current. In case of automatic control the customers are requested to specify the mode of control whether the requirement is for automatic constant voltage or automatic constant current. These will be at an extra cost which will be quoted against specific requirements. Units of ratings beyond our standard specifications such as input voltage range, maximum output voltage and current or with overload requirements of short duration can also be quoted against specific enquiries.
All rectifier units are guaranteed against manufacturing defects, bad workmanship or faulty material for a period of 12 months from the date of dispatch whether within the guarantee period or beyond, they are always backed by excellent. After sales service facilities available at our works or at the branch offices.
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