We offer qualitative range of Thyristor Controlled Rectifiers that are used in electric converters and inverters. Basically a rectifying device, the prime objective of Thyristors is to switch an AC power into DC power supply. Designed intricately using an array of diodes and triodes and assembled to perfection, our thyristors achieve almost complete accuracy in correcting the power supply. Manufactured using the latest technology and offered with user-friendly operation.

We offer Industrial Battery Charging & Rectifier Equipment that are designed and developed using latest and advanced technology. The rectifier is electronically regulated in conjunction with suitable lead or Ni-Cd batteries. These constitute reliable power supply unit for a wide range of application in power generation sectors as well as in transformer station and main distribution control rooms. Our products are reliable D.C. rectifier equipment and custom built D.C. system incorporate. These are offered with following features:

• Selection of Battery ampere-hour capacity from load cycle
• Selection of charging scheme
• Limits for D.C. bus operating voltages.
• Matching performance of charger equipment for the Batteries    selected.
• D.C. Distribution boards with modular design with MCCBs or SFUs

Highlights:

• D.C. output voltage within +1% input and 100% variation in load for set voltage
• Over load protection along with short circuit protection
• Solid state control circuit design for Thyristors
• Soft start feature
• Constant current +2% for Battery charging
• Ripple limit 1% or even low for communication systems
• Well structured M.S. / CRCA sheet steel cabinet confirming to IP42, IP55 standard

Scheme (I): Single Boost charger and single float charger

The system comprises of one set of Battery with associated float charger and boost charger. Normally the Float charger will float the Battery and supply the DC continuous load. During this Float Charger and Battery are across the load terminals and the Boost charger is in OFF condition. When AC mains supply fails, the Battery will supply the load current to the DC bus. After resumption of AC supply float charger continuous to supply the load current and the Boost charger is to be energized to recharge the Battery. During this period of recharging, the DC contractor on the positive terminal of the DC bus remains open so that the extra voltage across the load bus. After completion of the Boost charging the Boost charger is to be switched off thereby The Battery will come automatically across the Float charger. During the above Boost charging if there is one more power failure, the DC contractor will close automatically, thus permitting the battery across the load terminals to be changing the short period of 100 to 300 milliseconds. When the DC contactor takes to close, continuity of DC supply to the DC bus is provided through a silicon diode connected to appropriate tap cell of the battery bank.

Scheme - II - Single Boost charger, main float charger and stand-by charger

This scheme consists of one No. of Battery with associated float charger and Float cum Boost Charger. This working of this Scheme is similar to Scheme I except the Boost Charger is having two modes of operation i.e., constant current (in Boost Mode) and Constant Voltage (In Float Mode) If normal Float Charger fails, the Float-cum Boost charger is to be switched ON in Constant voltage mode and will supply the continuous load across the DC bus while floating the Battery so it acts as a standby float charger. The rating of Float-cum-Boost charger is decided by considering the maximum boost charging current or maximum load current whichever is higher.