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Page 1: Withdrawable Circuit Breaker Switchgear

Withdrawable Circuit Breaker Switchgear7\SH�1;$,5�3�XS�WR����N9���0HGLXP�9ROWDJH0HWDO�&ODG�W\SH�ZLWK�LQVXODWHG�EXV

Instruction'HVFULSWLRQ,QVWDOODWLRQ2SHUDWLRQ0DLQWHQDQFHSGIM-6208

Page 2: Withdrawable Circuit Breaker Switchgear

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Page 3: Withdrawable Circuit Breaker Switchgear

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Description NXAIR P - ANSI .....................6

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Page 6: Withdrawable Circuit Breaker Switchgear

Description NXAIR P - ANSI

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Page 7: Withdrawable Circuit Breaker Switchgear

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Page 8: Withdrawable Circuit Breaker Switchgear

Description NXAIR P - ANSI

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Page 9: Withdrawable Circuit Breaker Switchgear

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Page 10: Withdrawable Circuit Breaker Switchgear

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Page 11: Withdrawable Circuit Breaker Switchgear

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Page 12: Withdrawable Circuit Breaker Switchgear

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Additional Components (as Required by Application)

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Module Operation

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Truck Operated Cell Switch (TOC)

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Page 13: Withdrawable Circuit Breaker Switchgear

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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Page 14: Withdrawable Circuit Breaker Switchgear

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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Page 15: Withdrawable Circuit Breaker Switchgear

Description NXAIR P - ANSI

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5 Accessories

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Page 16: Withdrawable Circuit Breaker Switchgear

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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Page 18: Withdrawable Circuit Breaker Switchgear

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Page 19: Withdrawable Circuit Breaker Switchgear

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Page 21: Withdrawable Circuit Breaker Switchgear

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Page 22: Withdrawable Circuit Breaker Switchgear

Description NXAIR P - ANSI

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Page 23: Withdrawable Circuit Breaker Switchgear

Description NXAIR P - ANSI

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Breaker Auxiliary Switch Q0/S1 (52a/b)

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Page 24: Withdrawable Circuit Breaker Switchgear

Description NXAIR P - ANSI

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Secondary Equipment for Truck, Option: Releases

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Page 25: Withdrawable Circuit Breaker Switchgear

Description NXAIR P - ANSI

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Options: Manual Operation, Motor Operation

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Page 26: Withdrawable Circuit Breaker Switchgear

Description NXAIR P - ANSI

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Page 27: Withdrawable Circuit Breaker Switchgear

Description NXAIR P - ANSI

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6.9 Opening Times

Opening times

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Switching duties

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Motor operating mechanism (M1)

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Auxiliary switch (S1) 3SV92

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Page 28: Withdrawable Circuit Breaker Switchgear

Description NXAIR P - ANSI

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Page 29: Withdrawable Circuit Breaker Switchgear

Description NXAIR P - ANSI

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6.10 Current Ratings and Secondary Tap Connections

Current Ratings and Secondary Tap Connections for Standard Multi-Ratio Current Transformers

Current Ratings [A] Turns Ratio Secondary Taps

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Page 30: Withdrawable Circuit Breaker Switchgear

Description NXAIR P - ANSI

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7 Service information

7.1 Maintenance

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7.3 Replacement of Sections and components

Replacement of Sections

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7.4 Disposal

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Page 31: Withdrawable Circuit Breaker Switchgear

Installation NXAIR P

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Installation NXAIR P

8 Receiving, Handling & Storage

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8.4 Shipping Damage Claims

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Arrival of Shipment

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Page 32: Withdrawable Circuit Breaker Switchgear

Installation NXAIR P

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Documentation & Repair

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8.5 Lifting & Moving

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Page 33: Withdrawable Circuit Breaker Switchgear

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Page 34: Withdrawable Circuit Breaker Switchgear

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Page 35: Withdrawable Circuit Breaker Switchgear

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9 Installation

9.1 Preparing Installation

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9.2 Foundation General Requirements

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9.3 Foundations

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9.4 Installing Shipping Sections

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9.5 Anchoring, Leveling and Assembling Switchgear

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Bolting sections together

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9.6 Assembling Low-Voltage Compartment(if applicable)

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9.7 Fastening sections to the foundation

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9.8 Expanding Length of Existing Switchgear

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10.2 Bus Bar Insulation

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Bus Joint Insulation Boots

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Current Transformer Joint Insulation Boots

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10.3 Primary Cable Connections

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10.4 Secondary Control Wiring

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Connecting Control Wires

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Page 46: Withdrawable Circuit Breaker Switchgear

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Connecting Interunit Wires (Bus Wires)

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10.5 Ground Connections

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Connecting the ground bus bar

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Tightening torques

Grounding the Switchgear

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Fig. 33:

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10.6 Temporary Ground Connections

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Bolt size Tightening torque (minimum)

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Page 47: Withdrawable Circuit Breaker Switchgear

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Connecting Grounding and Testing Device

11 Instrument Transformers Replacement

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11.1 Current Transformers

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Page 48: Withdrawable Circuit Breaker Switchgear

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13 Inspection & Testing

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Page 49: Withdrawable Circuit Breaker Switchgear

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Checking Protection against adverse Environmental Influences (Protection against Corrosion)

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13.2 Testing

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14 Placing Equipment into Service

14.1 Safety instructions

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14.2 Instructing the operating personnel

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14.3 Checking the assembly work and the accessories

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14.4 Checking mechanical interlocks

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14.5 Test operation

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14.6 Verification of correct terminal-phase connections

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14.8 Switching on operational high voltage

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Page 56: Withdrawable Circuit Breaker Switchgear

Operation NXAIR P - ANSI

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16.4 Inserting 3AK1 Circuit Breaker

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Page 57: Withdrawable Circuit Breaker Switchgear

Operation NXAIR P - ANSI

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Page 58: Withdrawable Circuit Breaker Switchgear

Operation NXAIR P - ANSI

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Page 59: Withdrawable Circuit Breaker Switchgear

Operation NXAIR P - ANSI

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16.6 Racking the 3AK1 circuit breaker from Disconnected to Test or Connected Position

Manual Racking

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Page 60: Withdrawable Circuit Breaker Switchgear

Operation NXAIR P - ANSI

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Manual racking

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Page 61: Withdrawable Circuit Breaker Switchgear

Operation NXAIR P - ANSI

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16.8 Closing the Circuit Breaker

Manual operation

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Page 62: Withdrawable Circuit Breaker Switchgear

Operation NXAIR P - ANSI

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Manual operation

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Electrical operation

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Operation NXAIR P - ANSI

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16.10 Charging the spring manually

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Operation NXAIR P - ANSI

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16.11 Manual operation of shutters

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Page 65: Withdrawable Circuit Breaker Switchgear

Operation NXAIR P - ANSI

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Closing the feeder (lower) shutter

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Opening the busbar (upper) shutter

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Page 66: Withdrawable Circuit Breaker Switchgear

Operation NXAIR P - ANSI

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Closing the busbar (upper) shutter

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Operation NXAIR P - ANSI

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16.12 Cell Switches

Mechanism Operated Cell Switch (MOC)

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Truck Operated Cell Switch (TOC)

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Operation NXAIR P - ANSI

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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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Voltage Transformers (VT)

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Control Power Transformer (CPT)

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Page 69: Withdrawable Circuit Breaker Switchgear

Operation NXAIR P - ANSI

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17.3 Voltage Transformer

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Disconnect VT Rollout Tray(Withdraw from the connect to the disconnect position)

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Page 70: Withdrawable Circuit Breaker Switchgear

Operation NXAIR P - ANSI

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Page 71: Withdrawable Circuit Breaker Switchgear

Operation NXAIR P - ANSI

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17.5 Fuse Rollout

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Disconnect Fuse Rollout Tray (Withdraw from the connect to the disconnect position)

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Page 72: Withdrawable Circuit Breaker Switchgear

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18 Maintenance of Switchgear Section

18.1 Introduction and Maintenance Intervals

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7KH�XVHU�PXVW�HVWDEOLVK�D�SHULRGLF�PDLQWHQDQFH�SUR�JUDP�WR�HQVXUH�WURXEOH�IUHH�DQG�VDIH�RSHUDWLRQ��7KH�IUHTXHQF\�RI�LQVSHFWLRQ��SHULRGLF�FOHDQLQJ��DQG�SUHYHQ�WLYH�PDLQWHQDQFH�VFKHGXOH�ZLOO�GHSHQG�XSRQ�WKH�RSHU�DWLRQ�FRQGLWLRQV��1)3$�3XEOLFDWLRQ���%���(OHFWULFDO�(TXLSPHQW�0DLQWHQDQFH��PD\�EH�XVHG�DV�D�JXLGH�WR�HVWDEOLVK�VXFK�D�SURJUDP��A preventive maintenance pro-gram is not intended to cover reconditioning or major repair, but should be designed to reveal, if possible, the need for such actions in time to prevent malfunctions dur-ing operation.

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18.2 Recommended Hand Tools

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Maintenance NXAIR P - ANSI

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18.3 Recommended Maintenance and Lubrication

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18.4 Lubrication

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18.5 Moving Parts

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Page 76: Withdrawable Circuit Breaker Switchgear

Maintenance NXAIR P - ANSI

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18.6 Electrical Contacts

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18.7 Cleaning Insulation

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18.8 Corrosive Atmospheres

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18.9 Relays and Instruments

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18.10Equipment Surfaces

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19 Maintenance of 3AK1 Circuit Breaker

19.1 Circuit Breaker Maintenance - General Information

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7KH�XVHU�PXVW�HVWDEOLVK�D�SHULRGLF�PDLQWHQDQFH�SUR�JUDP�WR�HQVXUH�WURXEOH�IUHH�DQG�VDIH�RSHUDWLRQ��7KH�IUHTXHQF\�RI�LQVSHFWLRQ��SHULRGLF�FOHDQLQJ��DQG�SUHYHQ�WLYH�PDLQWHQDQFH�VFKHGXOH�ZLOO�GHSHQG�XSRQ�WKH�RSHU�DWLRQ�FRQGLWLRQV��1)3$�3XEOLFDWLRQ���%��(OHFWULFDO�(TXLSPHQW�0DLQWHQDQFH�PD\�EH�XVHG�DV�D�JXLGH�WR�HVWDEOLVK�VXFK�D�SURJUDP��A preventive maintenance pro-gram is not intended to cover reconditioning or major repair, but should be designed to reveal, lf possible, the need for such actions in time to prevent malfunctions dur-ing operation.

19.2 Recommended Maintenance and Lubrication

3HULRGLF�PDLQWHQDQFH�DQG�OXEULFDWLRQ�VKRXOG�LQFOXGH�DOO�WKH�WDVNV�VKRZQ�LQ�IROORZLQJ�OLVW�DQG�WDEOH��5HFRP�PHQGHG�SURFHGXUHV�IRU�HDFK�RI�WKH�OLVWHG�WDVNV�DUH�SURYLGHG�LQ�WKLV�VHFWLRQ�RI�WKH�PDQXDO�

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Maintenance NXAIR P - ANSI

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7KH�OLVW�RI�WDVNV�LQ�WDEOH�DERYH�GRHV�QRW�UHSUHVHQW�DQ�H[KDXVWLYH�VXUYH\�RI�PDLQWHQDQFH�VWHSV�QHFHVVDU\�WR�HQVXUH�VDIH�RSHUDWLRQ�RI�WKH�HTXLSPHQW��3DUWLFXODU�DSSOLFDWLRQV�PD\�UHTXLUH�IXUWKHU�SURFHGXUHV��6KRXOG�IXUWKHU�LQIRUPDWLRQ�EH�GHVLUHG�RU�VKRXOG�SDUWLFXODU�SUREOHPV�DULVH�ZKLFK�DUH�QRW�FRYHUHG�VXIILFLHQWO\�IRU�WKH�3XUFKDVHUV�SXUSRVHV��WKH�PDWWHU�VKRXOG�EH�UHIHUUHG�WR�WKH�ORFDO�6LHPHQV�VDOHV�RIILFH�

7DEOH�RQ�SDJH����VKRZV�WKH�VFKHGXOH�RI�PDLQWHQDQFH�DQG�UHSODFHPHQW�WDVNV�GXH�WR�WKH�RSHUDWLRQ�F\FOHV�RI�WKH�FLUFXLW�EUHDNHU�

Removal from switchgear

3ULRU�WR�SHUIRUPLQJ�DQ\�LQVSHFWLRQ�RU�PDLQWHQDQFH�FKHFNV�RU�WHVWV��WKH�FLUFXLW�EUHDNHU�PXVW�EH�UHPRYHG�IURP�WKH�VZLWFKJHDU��7KH�,QVWDOODWLRQ�DQG�,QLWLDO�)XQF�WLRQDO�7HVWV�VHFWLRQ�GHVFULEHV�WKH�UHPRYDO�SURFHGXUH�LQ�GHWDLO��3ULQFLSDO�VWHSV�DUH�UHSHDWHG�KHUH�IRU�LQIRUPD�WLRQ�DQG�JXLGDQFH��EXW�ZLWKRXW�WKH�GHWDLOV�RI�WKH�SUH�FHGLQJ�VHFWLRQ�

Õ2SHQ�WKH�FLUFXLW�EUHDNHU�

Õ5DFN�WKH�FLUFXLW�EUHDNHU�WR�WKH�WHVW�SRVLWLRQ��5HYLHZ�LQVWUXFWLRQV�IRU�UHPRYDO�RI�D�FLUFXLW�EUHDNHU�IURP�WKH��FHOO�IRU�LQIRUPDWLRQ�RQ�UDFNLQJ�

Õ:LWK�WKH�FLUFXLW�EUHDNHU�LQ�WKH�7HVW�SRVLWLRQ�DQG�23(1��GHHQHUJL]H�FRQWURO�SRZHU�WR�WKH�FLUFXLW�EUHDNHU�

Õ3HUIRUP�WKH�6SULQJ�'LVFKDUJH�&KHFN��E\�ILUVW�SXVK�LQJ�WKH�UHG�23(1�SXVKEXWWRQ��WKHQ�WKH�EODFN�&/26(�SXVKEXWWRQ��DQG�ILQDOO\�WKH�UHG�23(1�SXVK�EXWWRQ�DJDLQ��9HULI\�WKDW�WKH�FLUFXLW�EUHDNHU�LV�23(1�DQG�WKH�FORVLQJ�VSULQJ�LQGLFDWRU�VKRZV�',6�&+$5*('�

Õ5DFN�WKH�FLUFXLW�EUHDNHU�WR�WKH�'LVFRQQHFWHG�SRVL�WLRQ��DQG�UHPRYH�WKH�FLUFXLW�EUHDNHU�IURP�WKH�VZLWFKJHDU�

Õ7KH�GROO\�IRU�KDQGOLQJ�RI�WKH�FLUFXLW�EUHDNHU�KDV�IRXU�ZKHHOV�WR�DOORZ�RQH�SHUVRQ�WR�PDQHXYHU�WKH�XQLW�RQ�D�OHYHO�VXUIDFH�ZLWKRXW�DVVLVWDQFH�

Maintenance Tasks

�� &KHFNV�RI�WKH�SULPDU\�SRZHU�SDWK�

$� &OHDQOLQHVV�FKHFN

%� ,QVSHFWLRQ�RI�SULPDU\�GLVFRQQHFWV

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Page 79: Withdrawable Circuit Breaker Switchgear

Maintenance NXAIR P - ANSI

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Maintenance schedule

Seq. no.

Work Materials Frequency(see notes)

Remarks

1. Circuit breaker

��� &OHDQ�LQVXODWLQJ�FRPSRQHQWV�DQG�EUHDNHU�H[WHUQDO�SDUWV

,VRSURS\O�DOFRKRO � VHH�QRWH�D�

��� *UHDVH�EHDULQJV�DQG�VOLGLQJ�VXUIDFHV�DV�VKRZQ�LQ�)LJ�������SDJH�����3HUIRUP�XS�WR���VZLWFKLQJ�RSHUDWLRQV

,VRIOH[�7RSDV�/��6KHOO�7HOOXV�2LO���

� VHH�)LJ�������SDJH����EHORZ�DQG�QRWHV�E�DQG�F

2. Breaker pole

��� 5HSODFH�YDFXXP�LQWHUUXSWHUV � $V�DSSOLFDEOH��GHSHQGLQJ�RQ�WKH�QXPEHU�RI�HOHFWULFDO�RSHUDW�LQJ�F\FOHV�LQ�DFFRUGDQFH�ZLWK�WKH�FKDSWHU�RQ�VHUYLFH�OLIH

3. Breaker operating mechanism VHH�QRWH�G

��� 5HSODFH�PRWRU�0� � VHH�QRWH�J

��� 5HSODFH�FORVLQJ�VSULQJ �

��� 5HSODFH�FORVLQJ�VROHQRLG�<� �

��� 5HSODFH�RSHQLQJ�VROHQRLG�<� �

��� 5HSODFH�RSHQLQJ�VROHQRLG�<� � ,I�IXUQLVKHG

��� 5HSODFH�XQGHUYROWDJH�UHOHDVH�<� � ,I�IXUQLVKHG

��� 5HSODFH�DX[LOLDU\�VZLWFK�6� �

��� 5HSODFH�OLPLW�VZLWFKHV�6��WR�6�� � VHH�QRWH�H

4. Examine and replace if necessary VHH�QRWH�I

��� $OO�HOHFWULFDO�GHYLFHV�LQ�WKH�GULYH �

��� &KHFN�DOO�FDEOH�FRQQHFWLRQV�IRU�ILUP�ILW �

Notes

� $QQXDOO\

� �������PHFKDQLFDO�RSHUDWLRQ�F\FOHV�����N$�UDWHG�VKRUW�FLUFXLW�EUHDNLQJ�FXUUHQW�

� �������PHFKDQLFDO�RSHUDWLRQ�F\FOHV��XS�WR����N$�UDWHG�VKRUW�FLUFXLW�EUHDNLQJ�FXUUHQW�

� �������PHFKDQLFDO�RSHUDWLRQ�F\FOHV

D ,I�WKH��$.��YDFXXP�FLUFXLW�EUHDNHU�LV�XVHG�LQ�XQIDYRUDEOH�LQGRRU�FRQGLWLRQV��VWURQJ��IUHTXHQW�PRLVWXUH�FRQGHQVDWLRQ��GXVW�ODGHQ�DLU�HWF����ZH�UHF�RPPHQG�WKDW�WKH�LQVXODWLQJ�SDUWV�DQG��LI�QHFHVVDU\��WKH�H[WHUQDO�EUHDNHU�SDUWV�EH�UHJXODUO\�FOHDQHG�DW�PRUH�IUHTXHQW�LQWHUYDOV�

E -RLQWV�DQG�EHDULQJV�ZKLFK�FDQQRW�EH�GLVPDQWOHG�must not�EH�WUHDWHG�ZLWK�D�FOHDQLQJ�DJHQW�SULRU�WR�UHDSSOLFDWLRQ�RI�OXEULFDQWV��

F /XEULFDQWV�IRU�EHDULQJV�DQG�VOLGLQJ�VXUIDFHV��,VRIOH[�7RSDV�/��/XEULFDQWV�IRU�EHDULQJV�LQDFHVVLEOH�WR�JUHDVH�DQG�EHDULQJV�RI�WKH�DX[LOLDU\�VZLWFK�6���6+(//�7HOOXV�2LO���/XEULFDQWV���IRU�VSHFLDO�FRQGLWLRQV��DUH�DYDLODEOH�IURP�6LHPHQV�

G 7KH�IXVH�HOHPHQWV�XVHG�RQ�DOO�UHSODFHG�SDUWV�PXVW�DOVR�EH�UHQHZHG�

H 7KH�SRVLWLRQ�VZLWFKHV�PXVW�QRW�EH�ILWWHG�WRR�ILUPO\��L��H��WKH�SOXQJHU�PXVW�PRYH�IUHHO\�

I 5HSODFH�RQO\�LI�QHFHVVDU\��H��J��LI�WKH�VZLWFKLQJ�WLPHV�DUH�QR�ORQJHU�FRPSOLHG�ZLWK�RU�PHFKDQLFDO�GDPDJH�KDV�RFFXUHG�

J ���9'&�PRWRU�PXVW�EH�UHSODFHG�DW�LQWHUYDOV�RI��������RSHUDWLRQV�

Page 80: Withdrawable Circuit Breaker Switchgear

Maintenance NXAIR P - ANSI

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Lubrication of 3AK1

)LJ����� /XEULFDWLRQ�SODQ�IRU�FLUFXLW�EUHDNHU��$.�

Legend:

D &UDQN�SLQ�IRU�OLPLW�VZLWFK�RSHUDWLRQ

E &ORVLQJ�OHYHU�EHDULQJ

F &ORVLQJ�FDP�FRQWRXU

G &ORVH�ODWFK�PHFKDQLVP

H /LQNDJH�DX[LOLDU\�VZLWFK

I $X[LOLDU\�VZLWFK

J 2SHQLQJ�VSULQJ�JXLGH

K /LQNDJH�DX[LOLDU\�VZLWFK

M 0DLQ�VKDIW�EHDULQJ

N 7ULS�ODWFK�PHFKDQLVP

O 7ULS�ODWFK�FDP

P 2YHUWUDYHO�VWRS�SODWH

S 2SHQLQJ�VSULQJ�EHDULQJ

Legend lubrication material:

,VRIOH[�7RSDV�/��

6KHOO�7HOOXV�2LO���

For additional information and further lubrication points on the cassette call Siemens.

Page 81: Withdrawable Circuit Breaker Switchgear

Maintenance NXAIR P - ANSI

6*,0������ ��0$,17(1$1&(�1;$,5�3���$16,� ����������� ��

19.3 Checks of the Primary Power Path

7KH�SULPDU\�SRZHU�SDWK�FRQVLVWV�RI�WKH�WKUHH�YDFXXP�LQWHUUXSWHUV��WKH�WKUHH�XSSHU�DQG�WKH�WKUHH�ORZHU�SUL�PDU\�GLVFRQQHFWV��7KHVH�FRPSRQHQWV�DUH�FKHFNHG�IRU�FOHDQOLQHVV�DQG�FRQGLWLRQ��7KH�YDFXXP�LQWHUUXSWHUV�DUH�DOVR�FKHFNHG�IRU�YDFXXP�LQWHJULW\�

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�

$OVR��WKH�YDFXXP�LQWHJULW\�FKHFN�LV�XVXDOO\�SHUIRUPHG�LQ�FRQMXQFWLRQ�ZLWK�WKH�+LJK�3RWHQWLDO�WHVWV�

7KHVH�LQVWUXFWLRQV�IROORZ�WKH�UHFRPPHQGDWLRQ�WKDW�WKHVH�WHVWV��FRQWDFW�HURVLRQ�PDQXDO�VSULQJ�FKDUJLQJ�FKHFN��DQG�YDFXXP�LQWHJULW\�KLJK�SRWHQWLDO�WHVWV��ZLOO�EH�FRPELQHG�DV�GHVFULEHG�

Cleanliness Check: 7KH�YDFXXP�LQWHUUXSWHU��DQG�WKH�XSSHU�DQG�ORZHU�SULPDU\�GLVFRQQHFWV�PXVW�EH�FOHDQHG�DQG�IUHH�RI�GLUW�RU�DQ\�IRUHLJQ�REMHFWV���

Õ8VH�D�GU\�OLQW�IUHH�FORWK�

Õ8VH�D�FOHDQ�FORWK�VDWXUDWHG�ZLWK�GHQDWXUHG�DOFRKRO�IRU�VWXEERUQ�GLUW�

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�

Õ ,QVSHFW�WKH�FRQWDFW�ILQJHUV�IRU�DQ\�HYLGHQFH�RI�EXUQ�LQJ�RU�SLWWLQJ�WKDW�ZRXOG�LQGLFDWH�ZHDNQHVV�RI�WKH�FRQWDFW�ILQJHU�VSULQJV�

Õ ,QVSHFW�WKH�SULPDU\�GLVFRQQHFW�DUPV�IRU�SK\VLFDO�LQWHJULW\�DQG�DEVHQFH�RI�PHFKDQLFDO�GDPDJH�

Õ ,QVSHFW�WKH�IOH[LEOH�FRQQHFWRUV�WKDW�FRQQHFW�WKH�ERW�WRP�PRYDEOH�FRQWDFWV�RI�WKH�YDFXXP�LQWHUUXSWHUV�WR�WKH�ORZHU�SULPDU\�GLVFRQQHFW�DUPV�IRU�WLJKWQHVV�DQG�DEVHQFH�RI�PHFKDQLFDO�GDPDJH��EXUQLQJ��RU�SLWWLQJ�

Õ&OHDQ�ROG�OXEULFDQW�IURP�SULPDU\�GLVFRQQHFWV�VLQJ�D�FOHDQ�FORWK�VDWXUDWHG�ZLWK�GHQDWXUHG�DOFRKRO��DQG�DSSO\�6LHPHQV�FRQWDFW�OXEULFDQW�.OXHEHU�,VRIOH[�7RSDV�1%���LQ�D�YHU\�WKLQ�OD\HU�

19.4 Checks of the Stored Energy Operator Mechanism

7KH�VWRUHG�HQHUJ\�RSHUDWRU�FKHFNV�DUH�GLYLGHG�LQWR�PHFKDQLFDO�DQG�HOHFWULFDO�FKHFNV�IRU�VLPSOLFLW\�DQG�EHW�WHU�RUJDQL]DWLRQ��7KLV�ILUVW�VHULHV�RI�FKHFNV�GHWHUPLQH�LI�WKH�EDVLF�PHFKDQLVP�LV�FOHDQ��OXEULFDWHG�DQG�RSHUDWHV�VPRRWKO\�ZLWKRXW�FRQWURO�SRZHU��7KH�FRQWDFW�HURVLRQ�FKHFN�RI�WKH�YDFXXP�LQWHUUXSWHU�LV�DOVR�SHUIRUPHG�GXU�LQJ�WKHVH�WDVNV�

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�

Õ&OHDQ�WKH�HQWLUH�VWRUHG�HQHUJ\�RSHUDWRU�PHFKDQLVP�ZLWK�D�GU\��OLQW�IUHH�FORWK�

Õ&KHFN�DOO�FRPSRQHQWV�IRU�HYLGHQFH�RI�H[FHVVLYH�ZHDU�

Õ3ODFH�VSHFLDO�DWWHQWLRQ�XSRQ�WKH�FORVLQJ�VSULQJ�FUDQNV�DQG�WKH�YDULRXV�SXVKURGV�DQG�OLQNDJHV�

Õ/XEULFDWH�DOO�QRQ�HOHFWULFDO�PRYLQJ�RU�VOLGLQJ�VXU�IDFHV�ZLWK�D�OLJKW�FRDW�RI�6KHOO�7HOOXV�2LO�����%HDU�LQJV�VKRXOG�EH�OXEULFDWHG�ZLWK�.OXHEHU�,VRIOH[�7RSDV�/��

Fastener Check:

Õ ,QVSHFW�DOO�IDVWHQHUV�IRU�WLJKWQHVV��%RWK�ORFN�QXWV�DQG�UHWDLQLQJ�ULQJV�DUH�XVHG�

Õ5HSODFH�DQ\�IDVWHQHUV�WKDW�DSSHDU�WR�KDYH�EHHQ�IUH�TXHQWO\�UHPRYHG�DQG�UHSODFHG�

Manual Spring Charging and Contact Erosion Check:

Damper Assembly Check:

Page 82: Withdrawable Circuit Breaker Switchgear

Maintenance NXAIR P - ANSI

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19.5 Electrical Control Checks

7KH�HOHFWULFDO�FRQWUROV�RI�WKH��$.��FLUFXLW�EUHDNHU�VKRXOG�EH�FKHFNHG�GXULQJ�LQVSHFWLRQV�WR�YHULW\�DEVHQFH�RI�DQ\�PHFKDQLFDO�GDPDJH��DQG�SURSHU�RSHUD�WLRQ�RI�WKH�DXWRPDWLF�VSULQJ�FKDUJLQJ�DQG�&ORVH�DQG�7ULS�FLUFXLWV�

8QOHVV�RWKHUZLVH�QRWHG��DOO�RI�WKHVH�WHVWV�DUH�SHU�IRUPHG�ZLWKRXW�DQ\�FRQWURO�SRZHU�DSSOLHG�WR�WKH�FLUFXLW�EUHDNHU�

Check of the Wiring and Terminals:�

Õ&KHFN�SK\VLFDOO\�DOO�RI�WKH�EUHDNHU�ZLULQJ�IRU�HYL�GHQFH�RI�DEUDVLRQ��FXWV��EXUQLQJ�RU�PHFKDQLFDO�GDP�DJH�

Õ&KHFN�DOO�WHUPLQDOV�WR�EH�FHUWDLQ�WKH\�DUH�VROLGO\�DWWDFKHG�WR�WKHLU�UHVSHFWLYH�GHYLFH�

Check of the Secondary Disconnect:

Automatic Spring Charging Check - Control Power Required:�3ULPDU\�WDVNV�RI�WKLV�FKHFN�DUH�

Õ(QHUJL]H�WKH�FLUFXLW�EUHDNHU�ZLWK�FRQWURO�SRZHU�IRU�WKLV�FKHFN�

Õ'H�HQHUJL]H�WKH�VRXUFH�RI�FRQWURO�SRZHU�

Õ ,QVWDOO�WKH�FLUFXLW�EUHDNHU�HQG�RI�WKH�VSOLW�SOXJ�MXPSHU�RYHU�WKH�VHFRQGDU\�GLVFRQQHFW�RI�WKH�FLUFXLW�EUHDNHU��7KH�VSOLW�SOXJ�MXPSHU�KDV�RQH�PDOH�DQG�RQH�IHPDOH�FRQQHFWRU�DQG�FDQQRW�EH�LQVWDOOHG�LQFRU�UHFWO\��

Õ ,QVWDOO�WKH�VZLWFKJHDU�HQG�RI�WKH�SOXJ�MXPSHU�RYHU�WKH�VHFRQGDU\�GLVFRQQHFW�EORFN�LQVLGH�WKH�VZLWFK�JHDU�

Õ(QHUJL]H�WKH�FRQWURO�SRZHU�VRXUFH�

Õ:KHQ�FRQWURO�SRZHU�LV�FRQQHFWHG�WR�WKH�FLUFXLW�EUHDNHU��WKH�FORVLQJ�VSULQJV�VKRXOG�DXWRPDWLFDOO\�FKDUJH��9LVXDOO\�YHULI\�WKDW�WKH�FORVLQJ�VSULQJV�DUH�FKDUJHG�

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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19.6 High Potential Tests

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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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Insulation and Contact Resistance Test Procedure:

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Maintenance NXAIR P - ANSI

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Maintenance NXAIR P - ANSI

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19.9 Trouble shooting

3AK1 Insertion/Withdrawal

3AK1 Circuit breaker Racking

3AK1 Circuit-breaker

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20 Index

Numerics��$.� ����������������������������������������������������������������������� ��

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