Switch-Off Procedure - ABB REACT 2 Series Product Manual

S
witch-off procedure
1. Preliminary checks
- PPE Check: Verify the integrity of the PPE that is going to be used
to perform the operations.
- Equipment check: Check the voltage tester is working correctly.
2. Wear the appropriate PPE for carrying out the operations (overall
resistant to electric arc, dielectric helmet with visor, insulating gloves).
All the following activities (till the completion of the procedure) must be
performed wearing the PPE.
3. Check the absence of dangerous voltages on inverter chassis
respect ground:
Check the absence of dangerous voltage on the inverter chassis. The
measurement point are between inverter chassis and a ground point
outside the REACT2.
4. Operations on External AC source
- Disconnect any AC external sources.
-
- Check on the status icons (on the synoptic
command has been carried out: Missing Grid: Power icon (Green)
Flashing – Alarm icon (Yellow) on (solid).
5. Operations on External DC source
In case of absence of External DC disconnect device go on the point
6 "Operations on Internal DC and battery disconnect switch"
- Disconnect any DC external sources
-
6. Operations on Internal DC and battery disconnect switch
- Open DC and battery disconnect switch
-
- Check on the status icons (on the synoptic
command has been carried out.
Missing DC voltage: All LEDs OFF.
7. Remove the DC cables from the PV connectors
- Using the current clamp check the absence of current on DC side,
measurement each positive and negative DC input string(check the
correct setting of the current sensor).
-
REACT2-UNO. To avoid mechanical interferences, use a cable tie to
collect the disconnected cables.
8. Discharge of the capacitor
Wait the internal capacitors to be discharged. The discharge time of
the stored energy, is indicated on the regulatory label – 5 minutes.
9. Voltage absence check on DC side
- Access to the REACT2-UNO by opening the front cover
- Visually inspect the components to identify the presence of any
overheating, signs of electric arcs, failure of the insulating devices.
06 12
- 134 -
7 - Operation
03 the shutdown
)
07
.
07
03
the shutdown
)
06 12
(PV Connector) from the
05 .