Green Hydraulic Power Unit Installation at AST

Jan 7

SCE Customer Advanced Structural Technologies (AST), Inc. replaced existing hydraulic pump with a

variable speed fixed displacement drive controlled pump manufactured by Green Hydraulic Power. SCE

conducted pre data logging measurements (kWh, kW, volt, amp, PF) from 4/23 to 5/16. After the

technology was installed, SCE conducted post data logging measurements (kW, volt, amp, PF) from 6/13

to 8/1.

One specific part (5022) was manufactured during the pre (5/11 & 5/14) and post (6/19) data logging

periods. The part production data is given below. Shift 1 runs from 5:30 AM – 2 PM and Shift 2 runs

from 2 PM – 10:30 PM. Each day AST manufactured an average of 55 total parts. The data was

calculated to identify to the total kWh, average kW, average kWh/part and savings.

The demand kW profile

comparing the pre (5/11 & 5/14) and post (6/19) operations is given in the So Cal edison chart

Kelly Hamilton

Ratliff Industries Powers Innovation and Sustainability with Green Hydraulic Power VFD Technology