4kW hot swap PSUs for LED lighting

“Indoor growers are turning to centralised power systems that distribute dc rather than ac power directly to individual LED lamps”, said company v-p of industrial power Joe Voyles.

The supplies, called the LCM4000HV series, are compliant with DesignLights Consortium (DLC) technical requirements for horticultural lighting (version 2.1), and the company has just introduced a 19in 1U rack-mount shelf (LCM12K) that takes three of the PSUs on their sides for installations up to 12kW. Different shelf options have different three-phase input voltage ranges.

“In horticultural lighting, this combination allows customers to place the power conversion subsystem containing many rack-mounted ac-dc power supplies in a control room outside the growing area,” according to the company.

Input voltage options are 187 to 364Vac or 311 to 528Vac, and the output, described as ‘flicker-free’ by the company, is 0 to 16A at 100 to 300Vdc.

Inputs and output voltages are configurable, and the variable-speed smart fans include dust control.

Isolation is 4kVdc primary to protective earth, 4kVdc primary to secondary, 3.2kVdc secondary to protective earth, 6kVdc primary to user-accessible and 5kVdc secondary to user-accessible.

As well as the two different input voltage ranges, there are versions to mount in the shelf (three at a time) and stand-alone versions. Size is ~446 x 504 x 44mm.

The LCM4000HV and LCM12K shelf technical specification is here