Withdrawable Circuit Breaker Switchgear
Transcript of Withdrawable Circuit Breaker Switchgear
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Description NXAIR P - ANSI
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Module Operation
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Truck Operated Cell Switch (TOC)
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Description NXAIR P - ANSI
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3.3 Bus Bar Compartment
Basic Components
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Alternative Equipment
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3.4 Connection Compartment
Basic Components
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3.5 Low-voltage compartment
Basic components
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Additional equipment
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Description NXAIR P - ANSI
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4 Interlocks
Mechanical interlocks
Additional electromagnetic interlocks (optional)
Note
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Action Module-internal preconditions
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Action Additional precondition
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Description NXAIR P - ANSI
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5 Accessories
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Description NXAIR P - ANSI
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6 Technical data
6.1 Complete switchgear
Electrical data (maximum values)
NXAIR P Enclosure Dimensions and Weights
Control voltages
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Type of Enclosure
Heightw/28.4"
(720 mm)LV Box*
Heightw/38.6"
(980 mm)LV Box*
Heightfor
Arc VentedSections
Width Depth
Weight w/breaker
withoutPRC
Weightw/breakerwith PRC
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Description NXAIR P - ANSI
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Description NXAIR P - ANSI
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7 Service information
7.1 Maintenance
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Replacement of Sections
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10.3 Primary Cable Connections
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10.4 Secondary Control Wiring
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10.5 Ground Connections
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10.6 Temporary Ground Connections
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14 Placing Equipment into Service
14.1 Safety instructions
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14.5 Test operation
Preparing test operation
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16.11 Manual operation of shutters
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Closing the feeder (lower) shutter
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Closing the busbar (upper) shutter
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16.12 Cell Switches
Mechanism Operated Cell Switch (MOC)
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17 Metering & Auxiliary Section
17.1 General Information
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17.2 Control Power and Voltage Transformer General Information
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Control Power Transformer (CPT)
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Disconnect VT Rollout Tray(Withdraw from the connect to the disconnect position)
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18 Maintenance of Switchgear Section
18.1 Introduction and Maintenance Intervals
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Maintenance NXAIR P - ANSI
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Maintenance schedule
Seq. no.
Work Materials Frequency(see notes)
Remarks
1. Circuit breaker
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2. Breaker pole
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3. Breaker operating mechanism VHH�QRWH�G
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4. Examine and replace if necessary VHH�QRWH�I
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Notes
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Maintenance NXAIR P - ANSI
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Lubrication of 3AK1
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Legend:
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Legend lubrication material:
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6KHOO�7HOOXV�2LO���
For additional information and further lubrication points on the cassette call Siemens.
Maintenance NXAIR P - ANSI
6*,0������ ��0$,17(1$1&(�1;$,5�3���$16,� ����������� ��
19.3 Checks of the Primary Power Path
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6RPH�WHVW�HQJLQHHUV�SUHIHU�WR�SHUIRUP�WKH�FRQWDFW�HURVLRQ�FKHFN�GXULQJ�WKH�PDQXDO�VSULQJ�FKDUJLQJ�FKHFN�RI�WKH�RSHUD��WRW��VLQFH�FKDUJLQJ�RI�WKH�VSULQJV�LV�QHF�HVVDU\�WR�SODFH�WKH�FRQWDFWV�LQ�WKH�FORVHG�SRVLWLRQ�
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Cleanliness Check: 7KH�YDFXXP�LQWHUUXSWHU��DQG�WKH�XSSHU�DQG�ORZHU�SULPDU\�GLVFRQQHFWV�PXVW�EH�FOHDQHG�DQG�IUHH�RI�GLUW�RU�DQ\�IRUHLJQ�REMHFWV���
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Inspection of Primary Disconnects: :KHQ�WKH�FRQWDFWV�DUH�PDWHG�ZLWK�WKH�VZLWFKJHDUV�SULPDU\�VWXG�DVVHP�EO\��WKHUH�LV�IRUFHIXO�FRQWDFW�GLVWULEXWHG�RYHU�D�ZLGH�DUHD��7KLV�PDLQWDLQV�ORZ�FXUUHQW�IORZ�SHU�LQGLYLGXDO�FRQWDFW�ILQJHU�
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19.4 Checks of the Stored Energy Operator Mechanism
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7KH�LQWHUUXSWHU�RSHUDWRU�PHFKDQLVP�LV�VKRZQ�LQ������SDJH����LQ�SDUW�o'HVFULSWLRQp�RI�WKLV�PDQXDO�ZLWK�WKH�IURQW�FRYHU�WR�VKRZ�FRQVWUXFWLRQ�GHWDLOV��%RWK�WKH�RSHQLQJ�VSULQJ�DQG�WKH�FORVLQJ�VSULQJ�DUH�VKRZQ��7KH�PRYDEOH�HQG�RI�WKH�FORVLQJ�VSULQJ�LV�FRQQHFWHG�WR�D�FUDQN�DUP��7KH�PRYDEOH�HQG�RI�WKH�RSHQLQJ�VSULQJ�LV�FRQQHFWHG�WR�WKH�MDFN�VKDIW�E\�D�SXOO�URG��7KH�GDVKSRW�LV�FRQQHFWHG�WR�WKH�MDFN�VKDIW�RSHUDWLQJ�VKDIW�E\�D�SXVKURG�OLQNDJH�
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Fastener Check:
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Manual Spring Charging and Contact Erosion Check:
Damper Assembly Check:
Maintenance NXAIR P - ANSI
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19.5 Electrical Control Checks
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Check of the Wiring and Terminals:�
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Check of the Secondary Disconnect:
Automatic Spring Charging Check - Control Power Required:�3ULPDU\�WDVNV�RI�WKLV�FKHFN�DUH�
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Note:�$�WHPSRUDU\�VRXUFH�RI�FRQWURO�SRZHU�DQG�WHVW�OHDGV�PD\�EH�UHTXLUHG�LI�WKH�FRQWURO�SRZHU�VRXUFH�KDV�QRW�EHHQ�FRQQHFWHG�WR�WKH�VZLWFKJHDU��:KHQ�FRQWURO�SRZHU�LV�FRQQHFWHG�WR�WKH��$.��FLUFXLW�EUHDNHU��WKH�FORVLQJ�VSULQJV�VKRXOG�DXWRPDWLFDOO\�FKDUJH�
Electrical Close and Trip Check - Control Power Required:�$�FKHFN�RI�WKH�EUHDNHU�FRQWURO�FLUFXLWV�LV�SHUIRUPHG�ZKLOH�WKH�XQLW�LV�VWLOO�FRQQHFWHG�WR�WKH�VZLWFKJHDU�E\�WKH�SOXJ�MXPSHU��7KLV�FKHFN�LV�PDGH�ZLWK�WKH�EUHDNHU�HQHUJL]HG�E\�FRQWURO�SRZHU�IURP�WKH�VZLWFKJHDU�
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Checks of the Spring Charging Motor: 1R�DGGLWLRQDO�FKHFNV�RI�WKH�VSULQJ�FKDUJLQJ�PRWRU�DUH�QHFHVVDU\��2QFH�HYHU\��������RSHUDWLRQV��WKH�PRWRU�EUXVKHV�QHHG�UHSODFHPHQW�
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19.6 High Potential Tests
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High Potential Test Voltages
Equipment kV Rating Max AC rms kV Max DC Avg kV
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Maintenance NXAIR P - ANSI
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Vacuum Integrity Check:�$�KLJK�SRWHQWLDO�WHVW�LV�XVHG�WR�YHULI\�WKH�YDFXXP�LQWHJULW\�RI�WKH�FLUFXLW�EUHDNHU��7KLV�WHVW�LV�FRQGXFWHG�RQ�WKH�FLUFXLW�EUHDNHU�ZLWK�LWV�SUL�PDU\�FRQWDFWV�LQ�WKH�23(1�SRVLWLRQ�
Vacuum Integrity Test Procedure:
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As-Found Insulation and Contact Resistance Tests:�$V�)RXQG�WHVWV�YHULI\�WKH�LQWHJULW\�RI�WKH�EUHDNHU�LQVXOD�WLRQ�V\VWHP��0HJJHU�RU�LQVXODWLRQ�UHVLVWDQFH�WHVWV�FRQGXFWHG�RQ�HTXLSPHQW�SULRU�WR�LQVWDOODWLRQ�SURYLGH�D�EDVLV�RI�IXWXUH�FRPSDULVRQ�WR�GHWHFW�FKDQJHV�LQ�WKH�SURWHFWLRQ�DIIRUGHG�E\�WKH�LQVXODWLRQ�V\VWHP��$�SHUPD�QHQW�UHFRUG�RI�SHULRGLF�$V�)RXQG�WHVWV�HQDEOHV�WKH�0DLQWHQDQFH�RUJDQL]DWLRQ�WR�GHWHUPLQH�ZKHQ�FRUUHF�WLYH�DFWLRQV�DUH�UHTXLUHG�E\�ZDWFKLQJ�IRU�VLJQLILFDQW�GHWHULRUDWLRQ�LQ�LQVXODWLRQ�UHVLVWDQFH��RU�LQFUHDVHV�LQ�FRQWDFW�UHVLVWDQFH�
Insulation and Contact Resistance Test Equipment: ,Q�DGGL�WLRQ�WR�WKH�+LJK�3RWHQWLDO�7HVW�(TXLSPHQW�FDSDEOH�RI�WHVW�YROWDJHV�DV�OLVWHQ�LQ�WDEOH�o+LJK�3RWHQWLDO�7HVW�9ROWDJHVp�WKH�IROORZLQJ�HTXLSPHQW�LV�DOVR�UHTXLUHG�
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Insulation and Contact Resistance Test Procedure:
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