Drives optimize the power consumed by HVAC fans, speeding up or slowing down the fan based on climate demands of the space under control. A 20 percent reduction in fan speed (and air flow) results in a 49 percent decrease in electrical consumption. Integrated control of drives can also be part of a load shedding [...]
HT Level Motor protection relay of areva is very use ful with followinf functions. 1. PROTECTION FUNCTIONS 1.1 Thermal replica Thermal current threshold 1 Overload time-constant Te1 1 to 180 min by steps of 1 min Start-up time-constant Te2 1 to 360 min by steps of 1 min Cooling time-constant Tr 1 to 999 [...]
For most consumers, a single glance at their monthly utility bill provides striking evidence of the need for cheaper alternative energy sources. Yet putting viable new options into widespread use in the U.S. is a formidable challenge, even though many serving in government are keenly aware of the need to develop new power sources. The [...]
