ABB PCS 6000 System Distribution Panel GRB Opening Time Verification PCM02 3BHE057853R0001

Date: Sept 11, 2025 Views: 460

　　The response time of the Grid Breaker (GRB) has to be checked according to the manufacturer's specifications (responsibility of customer). For the ABB converter, the GRB opening time has to be less than the specified limit in the Preventive Maintenance Report.

　　Insulation Measurement 1CL

　　The insulation resistance of the converter components must be measured to verify their ability to withstand voltage stress. The results of the measurements must be noted in the Preventive Maintenance Report.

　　IMPORTANT! A high voltage insulation tester with a test voltage of 2500 VDC (eg, METRISO 5000) is required to perform the insulation measurements. The water conductivity must be lower than 0.5 µs/cm during the insulation measurements.

　　1. Shut down the PCS6000 according to the “PCS6000 Lockout/tagout procedure”,3BHS600000 E22.

　　2. Visually check that the LEM current transducer cables do not touch the medium voltage busbars.

　　3. Shorten the following points:

　　• AC grid Side: phases U,V,W

　　• AC generator side: phases U,V,W

　　• DC-link+ N -: X801, X803, X805 (inside DLU)

　　• Filter Capacitors: C541-C544, C461, C581 - C587

　　• Braking Resistor: X801-X802, X804-X805 (inside DLU)

　　4. Disconnect the following components:

　　• Ground Connection HFM: R544.2

　　• Ground Connection NCM: C461.2

　　• Ground Connection VFM: C587.2

　　• Pre-charger PCM: Remove fuses F421-F423 and ground PCM

　　• HVD-board: -U706, remove link to PECINTM (sub-d connector)

　　5. Open the following switches:

　　• GEB / GDM: Open disconnector and ground generator

　　• Earth Isolator: Q801

　　6. Apply a test voltage of 2500 VDC between the shortened phases and ground as shown in Fig. 4–3 for at least 1 minute.

　　Figure 4–3 Insulation measurements PCS6000 Converter 1CL with PCM

　　Figure 4–4 Insulation measurements PCS6000 Converter 1CL without PCM

　　7. Verify that the measured circuit is discharged

　　8. Close the ground switch

　　9. Reconnect all components

　　10. Remove all temporary bridges

　　11. After completing all work, restart the PCS6000 according to section 5.4, Start-up after maintenance or troubleshooting, page 70

　　Insulation Measurement 2CL

　　Effort 2 - 4 h

　　The insulation resistance of the converter components must be measured to verify their

　　ability to withstand voltage stress. The results of the measurements must be noted in the

　　Preventive Maintenance Report.

　　IMPORTANT! A high voltage insulation tester with a test voltage of 2500 VDC (eg, METRISO

　　5000) is required to perform the insulation measurements. The water conductivity must be

　　lower than 0.5 µs/cm during the insulation measurements.

　　1. Shut down the PCS6000 according to the “PCS6000 Lockout/tagout procedure”,

　　3BHS600000 E22.

　　2. Visually check that the LEM current transducer cables do not touch the medium voltage

　　busbars.

　　3. Shorten the following points:

　　• AC grid Side of each CL: phases U,V,W

　　• AC generator of each CL: phases U,V,W

　　• DC-link+ N - of each CL: X801, X803, X805

　　• DC-link between CL1 and CL2: X801

　　• Filter Capacitors of each CL: C461, C581 - C587

　　• Braking Resistor of each CL: X801-X802, X804-X805

　　4. Disconnect the following components:

　　• Ground Connection NCM: C461.2

　　• Ground Connection VFM74: C587.1

　　• Ground Connection VFM73: C584.1

　　• Pre-charger PCM of each CL: Remove fuses F421-F423 and ground PCM

　　• HVD-board: -U706, remove link to PECINTM (sub-d connector)

　　5. Open the following switches:

　　• GDM of each CL: open disconnector and ground generator and transformer

　　• Earth Isolator of each CL: Q801

　　6. Apply a test voltage of 2500 VDC between the shortened phases and ground as shown in Fig. 4–5 for at least 1 min.

　　Figure 4–5 Insulation measurements PCS6000 Converter 2CL

　　7. Verify that the measured circuit is discharged.

　　8. Close the ground switch.

　　9. Reconnect all components.

　　10. Remove all temporary bridges

　　11. After completing all work, restart the PCS6000 according to section 5.4, Start-up after maintenance or troubleshooting, page 70.

　　. GDM performance check

　　Effort 0 - 2 h

　　1. Shut down the PCS6000 according to the “PCS6000 Lockout/tagout procedure”, 3BHS600000 E22.

　　2. Double check that the DC-link is grounded (ground switch).

　　3. Visual inspection insulators active parts.

　　4. Control bolt fixations and connections.

　　5. Greasing shaft and chain motor drive.

　　6. Check the motor drive.

　　7. Operation functioning test (Open, Closed, Earth).

　　8. Record the switching time in the Preventive Maintenance Report.

　　9. After completing all work, restart the PCS6000 according to section 5.4, Start-up after maintenance or troubleshooting, page 70.

3BHS600000_E80_RevF_Service_Manual_PCS6000(1)Goods inspection(2).pdf

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