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

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EFX48-xx Series with RM3-340/440 Installation and Operation Guide
94
Copyright © 2019 Eaton Corporation. All Rights Reserved.
IPN March 2019
Battery Low Voltage Disconnect
Strings can be disconnected at a configurable voltage and reconnected at a configurable voltage
as defined below.
•
string disconnect voltage 36.00-59.90V
• string reconnect voltage 36.10-60.00V
• string connection delay 10-600s
Remote ON/OFF Control
String connections can be turned on and off remotely using SNMP commands and via the
ratings tab on the web pages.
Trip Reconnect Function
Each string contains a trip retry function which will allow a number of attempts to turn on the
string after a trip condition has been detected. The number of retries is configurable.
A Fast Trip results in a 1ms and then 1s re-try before entering the tripped state if no retries are
available, or the pending state if retries are available.
A Breaker Trip results in only the 1s retry before entering the tripped state if no retries are
available, or the pending state if retries are available.
Battery Mid-point Monitoring
Battery Mid-point Monitoring provides a method for the early detection of internal battery
faults. The voltages of the two halves of a battery string are measured and the system
controller generates an alarm signal if a voltage imbalance is detected.
A voltage imbalance is an indication that one or more cells has an internal fault. Further
investigation can then isolate the faulty cell(s) and action can be taken to correct the problem
and prevent a total battery failure.
To connect the Battery Mid-point Monitoring option see details on page 94. If a Midpoint
alarm is generated see Troubleshooting on page 120.
To ensure reliable operation Mid-point Monitoring operates only when the battery has been
in float charge for a defined period of time.
Two of the general purpose inputs can be used for mid-point monitoring. If midpoint is
enabled GP I/O 4&5 are both configurable to be string mid points 1 or 2.
The following parameters can be set :
•
Midpoint enable Enable or disable
• Float dwell time 1-48hr
• Midpoint delay 10-900mins
• Voltage threshold 1-25