Eaton EFX48 e-Fuse Series, Installation And Operation Manual

Page: 73 / 161

Start-Up
Copyright © 2019 Eaton Corporation. All Rights Reserved.
IPN March 2019
73
Task 5 - Applying Power to the dc-powered Equipment

Reverse Polarity
•
Always check that the dc cables have been terminated to the correct system polarity BEFORE connecting
dc power to the load equipment.
Step 1 - Check dc voltage and polarity
Check the dc output voltage and polarity of the power system and the battery
string(s).
Step 2 - Connect battery
1
If connecting multiple battery strings then check the individual strings are of
similar voltage.
2
Push and hold (for >2 seconds) the EFX48 push button relating to the battery
string to be connected. The corresponding EFX48 green LED may flash at 1Hz
prior to the string being connected – this indicates that the system is waiting for
the correct conditions for the battery string to be connected to the system bus. If
all connection criteria are met then the battery string will be connected to the
system and the LED will turn fully on.
3
Check the Battery String Disconnect (“String disc”) alarm clears.
4
Check the battery current. The actual value depends on the state of charge of the
batteries.
Step 2 - Connect load equipment
1
Push and hold (for >2 seconds) the EFX48 push button relating to the load to be
connected. The corresponding EFX48 green LED may flash at 1Hz prior to the
load being connected. If all connection criteria are met then the load will be
connected to the system and the LED will turn fully on.
2
Switch on the load equipment (refer to the equipment manufacturer's
instructions).
3
Check the equipment powers up.
Step 3 - Check the rectifier currents
1
Check the rectifier currents are approximately the same value.
2
Verify the load current is as expected for each connected equipment.