Technical articles
ABB PCS 6000 System Distribution Cabinet De-energizing, Grounding, and Start-up BRU70 3BHE034909R0001
Date: Sept 11, 2025 Views: 460
General
The following sections provide instructions on how to shut-down the PCS6000 for service purposes and on how to start-up again after the work is done.
Safety information
Before you begin, read and understand the material in chapter 2, Important safety information, page 23 and always follow the safety rules that are described in section 2.3.2, The 7 steps that save lives, page 26.
The PCS6000 is a medium voltage high power device.
▶ High voltage in the PCS6000 can result in serious injury or DEATH and damage to the equipment.
▶ Parts replacement and other work on the PCS6000 must only be carried out by qualified personnel in compliance with local regulations.
Cooling fans can start automatically!
▶ The water cooling system and the cooling fans can start automatically as soon as the auxiliary voltage is switched on or when the EMERGENCY OFF button is released, even if the PCS6000 is de-energized.
▶ Switch off the corresponding motor protection switches (see diagrams contained in the cabinet specific documentation) to shut down the cooling system.
Risk of component damage.
PCS6000 parameters are set during commissioning of the device and must not be changed afterwards.
▶ Running the PCS6000 with incorrect data can result in improper operation, reduction in control accuracy and damage to equipment.
Lockout/Tagout
High voltage!
▶ DO NOT access the power sections of the PCS6000 before the converter is completely disconnected and grounded.
▶ Before the internals of the PCS6000 are accessed for service purposes, the relevant components of the converter must be de-energized safely.
▶ Follow the Lockout/Tagout procedure in appendix B05.
▶ The Logout/Tagout procedure is to be coordinated with the site manufacturer.
Start-up after maintenance or troubleshooting
Service MTTR 0 - 2 h
1. To release the over pressure from the cooling liquid circuit or to empty the cooling liquid circuit for the replacement of the faulty component, refill the cooling system to static pressure of 1.3 to 1.7 bar.
For instructions, see the Operation and maintenance manual of the PCS6000 water cooling system, in Appendix A06 of the Data-sheets components of the user's manual.
2. Check that the water cooling system is ready for operation. See the user manual for the water cooling unit.
3. Remove safety grounding equipment.
4. Visually check the appearance, cleanliness inside and outside and that no tools, grounding equipment and other objects are left in any of the units.
5. Check that the grid is energized.
6. Connect all disconnected power supplies.
7. Switch on all MCBs (mini circuit breakers).
8. Make sure the “Bat.-select” switch on the uninterrupted power supply (UPS) module is set according to electrical drawings (“3.4Ah” in CCU, “7.2Ah” in POU) (see Fig. 8–2).
9. Close all unit doors properly.
All units containing live MV equipment are equipped with door switches and solenoid coils.
IMPORTANT! If a door is not closed, the converter start will be prevented
10. Check that the Key Switch is in “ON” position
Figure 5–1 Key switch
IMPORTANT! The grid isolators and the grid grounding isolator are not operated by the PCS6000 control.
11. Turn the DC-link grounding isolator in position “not grounded”.
The signal lamp ISOLATOR CLOSED must be off, ISOLATOR RELEASED stays on until the GRB disconnector is closed. (Only with DC-link grounding isolator modification otherwise until DC-link is above 50VDC)
12. Check the status supervision signal lamps (GRB closed, DC-link grounding isolator closed/released) located at the front of the PCS6000.
All three yellow signal lamps must be off to get the ready to start converter.(With old grounding isolator setup grounding isolator is still released)
13. If applicable, check that the grid ground switch is open and the grid isolators are closed.
14.Check that the main circuit breaker is in operating position.
15. Press the ACKNOWLEDGE ALARM or ACKNOWLEDGE TRIP function key or select the appropriate command from remote control to reset all pending alarms and trips. If an alarm or fault cannot be reset, the original alarm or fault cause might still be present. Ensure that the cause is removed and press the ACKNOWLEDGE ALARM or ACKNOWLEDGE TRIP function key again.
Faults caused by defects cannot be reset with the ACKNOWLEDGE TRIP function key. Elimination of these faults requires troubleshooting by authorized service personnel. For more information concerning “Acknowledge of alarms” for S2S application, see the “PCS6000 Local control panel description”, 3BHS606571 E49.
16. The PCS6000 can only be started if all faults are eliminated.
The PCS6000 is now in status OFF and ready to be started via the customer's HMI system (see application specific information in Appendix A04 Operation & Interface Documents, 01 Function Description and Control Interface). The above mentioned commands can also be given from a service PC, if it is connected to the PCS6000.
For more information, see the “PCS6000 Service software manual”, 3BHS600000 E81.
If parts have been replaced, check in the list in section 7.3, Checking procedure, page 81 or in section 10.3, Overview of serialized power components, page 135 as to whether these parts have a serialization profile, ie, these parts were serialized in production.
If such a part is replaced in the field the serialization database has to be updated, ie, the new serial number must be reported to ABB by means of a warranty and failure report.
3BHS600000_E80_RevF_Service_Manual_PCS6000 Replacing AC 800PEC accessories(2).pdf
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