Eaton EFX48 e-Fuse Series, Инструкция по установке и эксплуатации

Страница: 96 / 161

EFX48-xx Series with RM3-340/440 Installation and Operation Guide
96
Copyright © 2019 Eaton Corporation. All Rights Reserved.
IPN March 2019
Voltage Control
Voltage Control
The EFX48 controls the voltage setting of the rectifiers in order to perform all system control
functions that require this capability, including:
• Bus voltage setting
• Temperature Compensation
• Equalise
•
Fast Charge
•
Battery Test
• Battery current limit
Note: The voltage control function will not allow the commanded rectifier voltage setting to be
set higher than 1V less than the rectifier OVSD setting, this limits the control range of the
functions listed above and is intended to prevent erroneous rectifier OVSD events.
The power sharing process is run, the system will achieve power sharing within 1min.
There is a limit of authority of +/- 1V for the offset settings applied to the rectifiers to achieve
power sharing.
Current sharing between a population of rectifiers is as follows:
Condition Current sharing
10% load with 10sec TC better than 5%
50% load with 10sec TC better than 2%
100% load with 10sec TC better than 2%
Current sharing between 2 rectifiers is achieved with 1 minute of a load change of up to 80% of
full load.
If a rectifier is added to a system then current sharing is achieved within 20 minutes of the new
rectifier being added to the system.
Fast charge function
The fast charge function allows a fast recharge to follow after an ac outage has occurred.
The following parameters control the fast charge function:
•
Fast charge enable enable or disable
• Fast charge voltage 40.00-59.00V
• The maximum duration of a fast charge 1-96hrs
• Bus voltage trigger threshold 40.00-59.00V
•
Termination current 0-100% capacity