Kepco Power Offers RoHS and PFC

Kepco Inc. has added the RTW series of RoHS (Reduction of Hazardous Substances) compliant, general-purpose, L-chassis, single output power supplies. They are available in 50 and 100-watt power levels. Their small size and very low profile allow the RTW to be fitted into small spaces. They feature full safety compliance to international standards and have suppressed both conducted and radiated emission to FCC class B levels. Power factor correction (PFC) is standard, with the input power factor typically equal to 0.99.

A green power-on LED provides visual evidence of operation. An isolated remote ON-OFF control is built-in, as is remote error sensing. (A 4-wire Kelvin connection to the load eliminates the losses in the d-c load wires.) RTW may be operated in series for increased output voltage or in parallel for increased current.

The output of both the 50W and 100W models is current limited with a "square type" current limit circuit. In case of an overload, the unit goes into current limit and recovers automatically when the overload is removed; there is no shut down or current protection characteristics for these models. The output voltage setting is user-adjustable. When an overvoltage is detected, the output voltage shuts down. An interval of 30 seconds is required before resetting.

The RTW Series can be mounted in a 19-inch rack using Kepco's RA 40 Rack Adapter and appropriate mounting brackets. RTW open frame power supplies are CE marked per the Low Voltage Directive (LVD), EN60950.