Why Float cum Boost Battery Charger is essential for standby Application?
Tags: Manufacturing, Charger, Battery

Battery Charger, when used in stand by application is not a standalone dedicated Battery Charger. Here battery charger along with a floating battery provides uninterrupted DC power supply to a critical load. This is a Float-cum-boost battery charger or FCBC feeds the critical load without any break and also charges the discharged battery.

Though FCBC denotes “Float-cum-Boost” which clearly means a single rectifier/converter for AC to DC conversion, but for higher capacity or higher load “Float-and-Boost” charger is used which has two rectifiers, one for feeding load and another for charging the battery, etc.

These types of chargers are popularly known as Float-cum-Boost battery chargers or FCBC. An FCBC feeds the critical load as well as charges the battery. In the event of power outage battery feeds the load without any break in supply to the load. When mains power supply resumes, FCBC charges the discharged battery and feeds the load. In most of the applications connected load is not only critical to supply interruption but also to voltage fluctuation and superimposed ac ripple. There are various topologies of Float cum boost Chargers. Most popular among those are:

Float cum boost battery charger with one rectifier Float and boost battery charger with two rectifiers Dual Float cum boost battery charger with 100% redundancy but with alternative float/boost selection Dual Float cum boost battery charger with parallel operation 2 FCBC with 2 Battery sets, but feeding a single load bus

In ESI they design and manufacture Thyristor controlled Float Chargers up to 400V, 300KW of each rectifier.

ESI FLOAT cum BOOST Battery Charger

SALIENT FEATURES OF ESI MAKE AUTOMATIC THYRISTOR CONTROLLED :

ESI make “Float-and-Boost” and “Float-cum-Boost” Battery chargers are fully automatic. Automatic commencement and termination of battery charging or automatic float/boost mode selection by the microcontroller protects battery from deep discharge and over charging. In “Float-and-Boost” version when Float charger fails Boost charger switches automatically to “Float-cum-Boost” mode with an audio alert but maintains a complete no-break supply to critical and sensitive load. That is boost charger operates as spare float charger in auto emergency float mode. Full-wave fully controlled rectifier configuration in three phase version for better reliability and low inherent ripple. Separate analogue P & I Controller for precise adjustment of transient response. Test points provided on PCB to enable easy troubleshooting. All supervisory fault sensing, relay change over, alarm annunciation circuits are controlled by a 40-pin high end micro-controller IC. This has eliminated false alarm and hunting. Microcontroller has reduced the component failure drastically and increased the reliability of the system. All the battery chargers are normally air cooled but have the provision of current-controlled fan cooling, which maintains an excellent thermal stability of the system. Phase fail cum phase sequence reversal PCB is digital and operates in an wide input voltage variation. Pluggable pin connectors and edge connectors used for fast replacement of PCB. All components within the panel are laid out with sufficient space for easy maintenance and better ventilation. Comprehensive user’s manual with trouble shooting chart and detailed drawings are furnished to end user for easy maintenance.

ESI make “Float-and-Boost” and “Float-cum-Boost” Battery chargers are fully automatic. Automatic commencement and termination of battery charging or automatic float/boost mode selection by the microcontroller protects battery from deep discharge and over charging. In “Float-and-Boost” version when Float charger fails Boost charger switches automatically to “Float-cum-Boost” mode with an audio alert but maintains a complete no-break supply to critical and sensitive load. That is boost charger operates as spare float charger in auto emergency float mode. Full wave fully controlled rectifier configuration in three phase version for better reliability and low inherent ripple. Separate analogue P & I Controller for precise adjustment of transient response. Test points provided on PCB to enable easy troubleshooting. All supervisory fault sensing, relay change over, alarm annunciation circuits are controlled by a 40-pin high end micro-controller IC. This has eliminated false alarm and hunting. Microcontroller has reduced the component failure drastically and increased the reliability of the system. All the battery chargers are normally air cooled but have the provision of current controlled fan cooling, which maintains an excellent thermal stability of the system. Phase fail cum phase sequence reversal PCB is digital and operates in an wide input voltage variation. Pluggable pin connectors and edge connectors used for fast replacement of PCB. All components within the panel are laid out with sufficient space for easy maintenance and better ventilation. Comprehensive user’s manual with trouble shooting chart and detailed drawings are furnished to end user for easy maintenance.

Contact Information :

CEO- SOMEN GHOSH

call -9331036892 or 9903993911

Write a mail at — somenghosh@esielectro.com