 High-frequency EnerSys charger |
Stored energy solutions provider EnerSys has received approval from the California Energy Commission (CEC) for its high-frequency EnForcer chargers.
Each unit must meet the CEC's new energy efficiency standards for large battery charger systems such as those used to charge forklift batteries. New performance parameters and standards took effect for systems manufactured beginning 1 January 2014. Parameters include charge return factors, power conversion efficiency, power factors, maintenance-mode power and non-battery-mode power.
The CEC went through an extensive process leading to its requirements for certification going forward of all large industrial battery chargers and has a database listing approved charger models.
In addition to publicly traded Reading-based EnerSys, other significant suppliers of large battery chargers targeting the California market include Benning Power Electronics Inc of Bocholt, Germany with North American manufacturing in Richardson, Texas; Ametek Inc of Berwyn, Pennsylvania; and Advanced Charger Technology Inc of Fullerton, California.
Taking its playbook from the CEC, the state of Oregon adopted identical battery charger efficiency standards, and the state of Washington is moving in the same direction.
In moving toward certification, EnerSys upgraded some parts in some of its chargers and adjusted software as needed, says Stephen Spaar, EnerSys marketing director for the Americas.
The EnerSys line of chargers includes the EnForcer HF, EnForcer HF IQ and EnForcer HF Logiq. CEC certified all as meeting the recently implemented state standards for large battery charger energy efficiency.
"EnForcer HF, HF IQ and HF Logiq chargers are renowned for exceptional charging efficiency and performance and for providing costs savings to customers," Spaar says. "Now, with CEC approval, they will be well known for saving money even when they are not charging batteries."
Five CEC efficiency standards for large industrial forklift chargers include maximum charge return factor, minimum power conversion efficiency levels, minimum power factor levels, limits on maintenance-charge power use and limits on power use when a battery is not connected to the charger.
Spaar says, "The reduction in energy consumption that EnForcer chargers provide will make fleet operations even more cost-effective." EnForcer HF chargers employ high-frequency charging technology to optimise charging efficiency and switching speed.
EnerSys says it is the only industrial battery manufacturer in North America to manufacture its own line of chargers to ensure battery and charger systems are jointly designed for maximum performance and reliability.