WECO 5K3-XP-EMEA
80
3.6.3
HV Box and Battery Module Power Connection
Step 1:
Keep the power box main breaker OFF (located on the side).
Step 2:
Connect the positive terminal of the HV Box to the Positive terminal of the 1
st
Battery Module.
Step 3:
Proceed with the serial connection between all the modules.
Step 4:
Connect the negative output from the last module to the negative input of the HV Box.
Step 5:
Connect the Inverter Input Channels to the inverter (follow the inverter manual).
Make sure the DC circuit between inverter and HV is connected and ready to be closed as the pre-charge function will be
effective only if the power connection between inverter and HV BOX is established.
The Pre-
Charge function have the function to protect the Inverter from Inrush current to the Capacitors bank of the inverter.
Step 6:
Turn on the HV Box breaker and wait for the start-up automatic procedure.
1-
ID assignment
2-
Insulation Tester ( Fail below 300kOhm / 20 sec)
3-
Pre-charge 150 Ohm /4 Sec / Vnom
4-
DC positive contactor Engaged
5-
(DC Negative Contactor Engaged ( if included))
6-
Pre-charge Contactor Disabled
Step 7
: The HV Box will end the startup procedure within 90 seconds by closing the input circuit. The RED and the GREEN light
will turn on, confirming the working status of the HV Box.
Step 8:
Each module will turn on automatically and the side button will blink for 3 seconds, then a fixed GREEN light will confirm
the run status of each module.
If one or more modules do not turn on automatically, it is necessary to check all the COM CAN connections and restart the ``START
UP`` procedure.
ATTENTION: In the event of missed communication between the inverter and HV BOX for more than 200 seconds,
the HV BOX will enable the safety procedure by opening the POWER CONTACTOR.
During the commissioning phase the installer must ensure that the communication between the HVBOX and the
Inverter is correctly connected.
Do not leave the system powered in absence of communication between the HV BOX and the Inverter, a prolonged standby of the
cluster could cause an imbalance caused by the natural self discharge.
Information:
Arrange the cables according to the specific installation requirements, always paying attention to minimize the
length of the cables to avoid voltage drops.
Note: if the system is composed of more than 6 modules, it is required to arrange them as per the image.
Alternate arrangements are strictly prohibited.
GREEN
LED
RUN
GREEN
LED
BLINK + RED LED STEADY = FAULT
In the event of a SYSTEM FAULT
It is mandatory to:
•
Pull down the HV BOX Breaker
(HV BOX OFF)
•
Shut Down the inverter ( see inverter manual)
•
Wait 10 min for the capacitors to discharge
•
Isolate the Inverter from the HV BOX ( unplug the power cables
from the fast connectors)
•
Unplug the CAN cable from the inverter / HV BOX
•
Check all the connections of the cluster
•
Turn on the battery cluster as stand-alone ( not connected with
the inverter)
•
Connect the PC via RS 232 and by using the WECO XP MANAGER
and identify the error if present ( contact WECO for further
support)
•
If there are no errors as stand-alone need to repeat the same
procedure above by connecting the inverter to the HV BOX ( see
start-up process)
•
Keep the WECO XP MANAGER connected to the HV BOX, start up
the inverter first ( Keep the PV breaker OFF), and then start up the
HV BOX. The PC SOFTWARE will identify the error if any.
•
In case of missed CAN communication between the inverter and
HV BOX the XP MANAGER will display EXT COM FAIL
•
In case of LOW INSULATION the XP manager will display R-ISO
LOW.
For troubleshooting and support please contact WECO
([email protected])