
WECO 5K3-XP-EMEA
84
IMPORTANT
ORDINARY SHUT DOWN PROCEDURE OF THE HV BOX
To turn off the HV BOX of any cluster connected to the inverter, it is important to follow the procedure.
1. Turn off the PV INPUT from the inverter by turning the DC switch of the inverter
2. If the DC switch is not integrated in the inverter, open the PV circuit of the inverter (fuse or string insulator)
3. Disable any charging or discharging process by adjusting the inverter settings or Open the AC breaker and the load input
breaker of the EPS and LOAD AC line.
4. Wait for the inverter to finish discharging the capacitors ( see inverter manual)
5. Turn off the HV BOX manual switch on the front of the HV BOX
6. Wait 60 seconds and disconnect the power cables from inverter or from the HV BOX (quick connectors CH1 and CH2) All
input cables coming from the inverter must be disconnected from the HVBOX
MAINTENANCE AND / OR REPLACEMENT OF THE HV BOX in addition to the previous operations
7. Disconnect the Positive Input from the 1st battery to the HV BOX
8. Disconnect the negative input from the last battery to the HV BOX
9. Disconnect the CAN / BMS cable
10. Disconnect and the CAN cable
11. Loosen the support bracket from the first battery
12. Remove the HV BOX from its location
DC BREAKER OFF/
PV Open Circuit
Charging and Discharging
Process must be
interrupted
Shut Down the HV BOX
BREAKER ( OFF)
Disconnect any power Input
from the Inverter
OFF