Medium Voltage SERVICE HPA development Information

© ABB PT. - Page 2 Medium Voltage Service Necessary details for HD4-HPA Retrofit solution development  Essential technical data Name plate on the existing breaker with Serial number Type Rated Voltage Rated Current Short Time withstand Current Auxiliary voltage for coils and spring charging motor  Clarification of electrical/mechanical interchangeability Front, Rear, Side CB pictures (prefereable bottom side and front top) Internal view of the MV panel enclosure (preferable bottom side and rear side) Shutters condition Anti-introduction interlock position Main contacts resin insulation Existing CB schematic diagram In case of Generator CB, to be filled the relevant data sheet

© ABB PT. - Page 3 Medium Voltage Service Necessary details for Retrofit solution Picture of name plate Positioned on the CB Front For every breaker type

© ABB PT. - Page 4 Medium Voltage Service Necessary details for Retrofit solution Front, rear, side Pictures Bottom side and Front Top details

© ABB PT. - Page 5 Medium Voltage Service Necessary details for Retrofit solution Enclosure Internal view Shutters condition

© ABB PT. - Page 6 Medium Voltage Service Necessary details for Retrofit solution Anti-introduction interlock position Verify the pins position Left or Right side Interlock No Interlock

© ABB PT. - Page 7 Medium Voltage Service Necessary details for Retrofit solution Main Contacts Resin Insulation Verify whether the resin Insulation is present on the main contacts

© ABB PT. - Page 8 Medium Voltage Service Necessary details for Retrofit solution Existing Panel Schematic diagram Schematic diagram clarify the accessories included into the existing breaker and the aux. contacts wired to the sliding plug

© ABB PT. - Page 9 Medium Voltage Service Necessary details for Retrofit solution Generator Breaker Data sheet 2. Technical data of generator: Rated voltageU r [kV] Rated apparent powerS r [MVA] Rated frequencyf r [Hz] Subtransient direct axis reactance (saturated)X d ‘‘[%] Transient direct axis reactance (saturated)X d ‘[%] Synchronous direct axis reactance (saturated)X d [%] Subtransient short-circuit time constantT d ‘‘[ms] Transient short-circuit time constantT d ‘[ms] Armature short-circuit time constantT a [ms] 3. Data of network: Short circuit power of high voltage networkS k ’’[MVA] Rated power of main transformerS r [MVA] Impedance voltage of main transformeru k [%] Rated power of auxiliary transformer *) S r [MVA] Impedance voltage of auxiliary transformer *) u k [%] Rated power of connected medium voltage motor(s) *) P r [MW] Rated motor current related to motor starting current *) I r /I a [p.u.] Single line diagram of network Generator Information Net Information

© ABB PT. - Page 10