Our packager tells that upgrading the control system to Mark 6 for Frame 5 turbine will require changing the entire battery bank and charger system 'since Mark 6 operates at 125VDC only'. The packager tells that our existing system is not 125VDC.

Our existing system has following voltages:
nominal battery volts (without charger) - 110VDC
floating volts (with charger on) - 126VDC

What is the power supply requirement for a Mark 6 control system? Is our existing battery-charger incompatible? We would like to save the battery-charger costs, if possible. Please help and advise.

Regards,
karen

 

Ask your packager to refer to the Mark VI Control System Guide, GEH-6421K, Vol. I, Chapter 4, page 2, 'Supply Voltage.'

"DC Supplies � Operating line variations of -30 %, +20 % or 145 V dc. This meets IEC 60204-1 1999."

I actually think the passage *should* read "...-30%, +20% *of* [not *or*] 145 VDC...."

Now, these values do NOT represent the minimum and maximum sustainable voltages which can be used for steady-state operation (i.e., the -30% and +20% of 145 VDC).

GE also lists, in Vol. II, of the System Guide, various other power supplies (converters, really) from 110/220 VAC to 24 VDC.

They should be able to show/give you a copy of the Control System Guide for review during the sales process....