Siemens NXAIR M

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Operating the circuit-breaker panel with HV HRC fuse

98 NXAIR M 139-2021.9 / 07

Fig. 159: Pushing front insulation cover into the housing

Proceed in the same way with the HV HRC fuse-links of the other phases.

Fig. 160: The HV HRC fuse-links replaced



The HV HRC fuse-links have been replaced.

HINT

Final procedure

Insert the withdrawable part in the panel and de-earth the feeder. After

closing the high-voltage door, the panel can be integrated into the course

of operation again.

Main Page

1 Safety Instructions3
- Table of Contents4
2 General Instructions8
- Five Safety Rules of Electrical Engineering8
- Hazardous Substances8
- Personal Protective Equipment (PPE)9
- Due Application9
- Qualified Personnel9
- Update of the Firmware of Protection Relays10
3 Features11
4 Technical Data12
- Complete Switchgear12
- Basic Prescriptions and Standards12
- Electromagnetic Compatibility - EMC13
- Rating Plates13
- IAC Classification13
- Panel Dimensions14
- Room Planning14
- Operating Conditions14
- Vacuum Circuit-Breaker Type 3AE15
- Operating Instructions for Circuit-Breaker Type 3AE15
5 Overview of Panel Types16
6 Panel Design18
- Basic Design Circuit-Breaker Panel, Single-Busbar System18
- Basic Design Circuit-Breaker Panel with HV HRC Fuse18
- Basic Design Circuit-Breaker Panel, Double-Busbar System19
7 Interlocks20
- Mechanical Interlocks for Single-Busbar System20
- Mechanical Interlocks for Double-Busbar System21
- Additional Electromagnetic Interlocks (Optional)21
- Additional Padlock Interlock (Optional)22
- Additional Key-Operated Interlock (Optional)22
8 Accessories23
- Operating Tools23
- Service Truck25
- Service Truck Versions25
9 Customer Support28
- Service28
- Repairs28
- Before You Call28
- Service Contact28
10 Operating the Circuit-Breaker Panel29
- Control Elements at the Front Side of the Panel29
- Position Indicators Visible on High-Voltage Door30
- Access to Compartments30
- Opening the High-Voltage Door30
- Closing the High-Voltage Door32
- Positions of the Withdrawable Circuit-Breaker34
- Racking the Withdrawable Circuit-Breaker to Service Position35
- Racking the Withdrawable Circuit-Breaker to Test Position37
- Closing the Circuit-Breaker Electrically40
- Opening the Circuit-Breaker Electrically41
- Closing the Circuit-Breaker Manually42
- Opening the Circuit-Breaker Manually45
- Discharging the Spring Energy Store47
- Charging the Spring Manually48
- Earthing the Feeder Manually51
- Earthing the Feeder Manually53
- Removing the Low-Voltage Connector56
- Plugging on the Low-Voltage Connector57
- Taking the Withdrawable Circuit-Breaker out of the Panel59
- Inserting the Withdrawable Circuit-Breaker in a Panel64
11 Operating the Disconnecting Panel73
- Control Elements at the Front Side of the Panel73
- Position Indicators Visible on High-Voltage Door73
- Access to Compartments74
- Opening or Closing the High-Voltage Door74
- Racking the Withdrawable Disconnector Link74
- Removing or Plugging on the Low-Voltage Connector76
- Taking the Withdrawable Disconnector Link out of a Panel or Inserting in a Panel76
- Earthing or De-Earthing the Feeder76
12 Operating the Metering Panel77
- Control Elements at the Front Side of the Panel77
- Position Indicators Visible on High-Voltage Door77
- Access to Compartments78
- Opening or Closing the High-Voltage Door78
- Racking the Withdrawable Metering Part78
- Removing or Plugging on the Low-Voltage Connector78
- Taking the Withdrawable Metering Part out of a Panel or Inserting in a Panel79
- Replacing Protection Fuse-Links79
13 Operating the Circuit-Breaker Panel with HV HRC Fuse83
- Control Elements at the Front Side of the Panel83
- Position Indicators Visible on High-Voltage Door84
- Access to Compartments84
- Opening or Closing the High-Voltage Door84
- Racking the Withdrawable Part84
- Closing or Opening the Circuit Breaker / Fuse Combination85
- Discharging or Charging the Closing Spring85
- Earthing or De-Earthing the Feeder Manually85
- Removing the Low-Voltage Connector85
- Plugging on the Low-Voltage Connector87
- Taking the Withdrawable Circuit-Breaker / Fuse Combination out of a Panel or Inserting in a Panel89
- Replacement of HV HRC Fuse-Links89
14 Operating the Circuit-Breaker Panel for Double-Busbar System99
- Position Indicators Visible on High-Voltage Door, Panel a101
- Position Indicators Visible on High-Voltage Door, Panel B101
- Access to Compartments101
- Opening or Closing the High-Voltage Door102
- Positions of the Withdrawable Circuit-Breaker102
- Racking the Withdrawable Circuit-Breaker102
- Closing or Opening the Circuit-Breaker102
- Discharging or Charging the Closing Spring102
- Earthing or De-Earthing the Feeder103
- Removing or Plugging on the Low-Voltage Connector103
- Taking the Withdrawable Part out of a Panel or Inserting in a Panel103
15 Operating the Removable Voltage Transformers104
- Opening or Closing the High-Voltage Door104
- Racking the Removable Voltage Transformers to Service Position105
- Racking the Removable Voltage Transformers to Test Position109
- Taking the Removable Voltage Transformers out of the Panel113
- Inserting the Removable Voltage Transformers in a Panel117
- Replacing Protection Fuse-Links122
16 Verifying Safe Isolation from Supply125
- Application of Voltage Indicators125
- Overview of Voltage Indicating Systems125
- LRM System Overview126
- Verifying LRM-ST Voltage Indicator127
- Verifying Safe Isolation from Supply with the LRM Device System128
- CAPDIS and VOIS Systems Overview129
- Verifying Safe Isolation from Supply with the CAPDIS or VOIS Device System132
- Supplier Information132
17 Earthing and De-Earthing the Busbar System133
- Earthing the Busbar System Manually133
- Earthing the Busbar System Manually138
18 Operating the Shutters143
- Operating the Shutter to the Busbar Compartment in the Switching-Device Compartment143
- Operating the Shutter to the Connection Compartment in the Switching-Device Compartment146
19 Accessing the Connection Compartment through the Front150
- Preparations before Accessing the Connection Compartment150
- Accessing the Connection Compartment through the Switching-Device Compartment152
- Installing the Vertical Partition in the Switching-Device Compartment153
- Accessing the Connection Compartment through the Switching-Device Compartment in Panel Versions with Ventilation System157
- Installing the Vertical Partition and the Ventilation Duct in the Switching-Device Compartment162
- Accessing the Connection Compartment through the Switching-Device Compartment in Panel Versions with Voltage Transformer Compartment168
- Installing the Bushing Plate, the Vertical Partition and the Voltage Transformer Compartment in the Switching-Device Compartment172
20 Accessing the Connection Compartment through the Rear177
- Accessing the Connection Compartment through the Rear Side of the Panel177
- Installing the Rear Wall on the Connection Compartment180
- Accessing the Connection Duct through the Rear Side of the Panel183
- Installing the Rear Walls on the Connection Duct186
21 Key-Operated Interlocks189
- Key-Operated Interlocks for the Busbar Earthing Switch191
22 Fitting the Earthing Device193
- Design, Application and Inspection of the Earthing Accessories193
- Connecting the Earthing Device194
- Removing the Earthing Device201
23 Panels with Motor Operating Mechanism Control205
- Overview of Functionality205
- Opening the Control Door209
- Closing the Control Door210
- Selecting Manual Operation for Racking211
- Selecting Electrical Operation for Racking213
- Selecting Interlocking214
- Racking the Withdrawable Circuit-Breaker to Service Position Manually217
- Racking the Withdrawable Circuit-Breaker to Service Position Electrically220
- Racking the Withdrawable Circuit-Breaker to Test Position Manually221
- Racking the Withdrawable Circuit-Breaker to Test Position Electrically225
- Opening the Circuit-Breaker Manually226
- Closing the Circuit-Breaker Manually227
- Charging / Discharging the Spring Energy Store Manually228
- Earthing / De-Earthing the Feeder Manually230
- Earthing / De- Earthing the Feeder Electrically232
- Earthing / De-Earthing the Busbar System Manually233
- Earthing / De-Earthing the Busbar System Electrically233
- Further Operating Options234
- Technical Data / Operating Times235
- Fault Indication and Fault Evaluation236
24 Panel Heater237
- Heater Versions237
- Mechanical Temperature Controller237
- Electronic Temperature and Humidity Controller238
- Applications for Temperature Controller238
25 Service Information240
- General Maintenance240
- Time Schedule for Maintenance Measures240
- Visual Inspection241
- Preventive Maintenance242
- Lubricants to be Used244
- Overpressure Sensors (Optional), Function Test245
- Switchgear Extension248
- Spare Part Orders248
- Replacement of Panels and Components248
- Disposal248
26 Trouble Shooting249
- Panels249
27 Index251

Siemens NXAIR M - Page 98

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