Circuit-Breaker Switchgear Type NXAIR H up to 36 kV, 31.5 kA, Air-Insulated
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Circuit-Breaker Switchgear Type Catalog NXAIR H up to 36 kV, 31.5 kA, Siemens India 1 Medium-Voltage Switchgear

Circuit-Breaker Switchgear Type NXAIR H up to 36 kV, 31.5 kA, Air-Insulated Medium-Voltage Switchgear Catalog Siemens India - Edition 2019 www.siemens.com/medium-voltage-switchgear Application Page Requirements Customer benefits and features 4 Technical Data Electrical data, dimensions 5 Product Range Panels 7 and 8 Design Panel design 9 and 10 Compartments, operation, interlocks 11 Components Switching-device truck Low-voltage cables Low-voltage compartment Standards Standards, specifications, guidelines 13 to 15 Circuit-Breaker Switchgear Type NXAIR H ■ Siemens India - 2019

Circuit-breaker switchgear type NXAIR H is type-tested, metal-enclosed and metal-clad switchgear for indoor installation according to IEC 62271-200 Classification The NXAIR H switchgear corresponds to the following classifications according to IEC 62271-200 Typical uses The NXAIR H circuit-breaker switchgear is used in transformer and switching substations, mainly at the primary distribution level, e.g.: Application: Industry • Power stations • Cement industry • Iron and steel works • Rolling mills • Mining industry • Textile, paper and food industries • Chemical industry • Petroleum...

Circuit-Breaker Switchgear Type NXAIR H ■ Siemens India - 2019

# Higher ratings are possible on request Circuit-Breaker Switchgear Type NXAIR H ■ Siemens India - 2019

Room planning Switchgear room dimension Switchgear room dimensions Circuit-Breaker Switchgear Type NXAIR H • Siemens India - 2019

Circuit-Breaker Switchgear Type NXAIR H ■ Siemens India - 2019

Product Range Panels Withdrawable panel Components Current transformer Voltage transformer Circuit-Breaker Switchgear Type NXAIR H · Siemens India - 2019 Withdrawable circuit-breaker Withdrawable voltage transformer with primary fuses Withdrawable voltage transformer

1 Door of low-voltage compartment 2 Protection device 4 Feeder Name Plate 5 High-voltage door 6 Inspection window for checking the switching device truck 7 Mechanical On 10 Viewing window for VCB status 11 Door handle 12 Slot to insert cranking handle & Double bit key for Rack in Rack out 13 Viewing window of earth SW status 14 Slot to insert Earth SW handle A Switching-device compartment B Busbar compartment C Cable compartment D Low-voltage compartment Circuit-Breaker Switchgear Type NXAIR H ■ Siemens India - 2019

Switching-device compartment • All switching operations with high-voltage door closed • Pressure relief upwards • Panel powder-coated with epoxy resin • Metallic, earthed shutters ensure partition class PM • High-voltage door pressure-resistant in the event of internal arcs in the panel • Interlocking between high-voltage door and circuit-breaker truck ensures interlock-controlled access • Switching-device compartment to accommodate components for implementing various panel versions with - Vacuum circuit-breaker truck - Metering truck. Busbar compartment • Pressure relief upwards • Hollow...

ComponentsSwitching-device truck, low-voltage cables, low-voltage compartment Switching-device truck • 4 NO + 4 NC auxiliary switch contacts at the carriage mechanism indicate the service and test position of the truck • Interlocks to the panel door and the earthing switch are integrated in the operating mechanism box • The truck is mechanically interlocked with the circuit-breaker • 26.3kA / 31.5 kA 3s, with silver-plated tulip contacts. Low-voltage cables • Low-voltage cables are flexible and have metallic covers • Connection between switching-device truck and panel wiring to low-voltage...

Standards The switchgear complies with the relevant standards and specifications applicable at the time of type tests. Technical Standards Circuit-Breaker Switchgear Type NXAIR H ■ Siemens India - 2019

Type of service location The switchgear can be used for indoor installation • Outside lockable electrical service locations at places which are not accessible to the public. Enclosures of switchgear can only be removed with tools. • Inside lockable electrical service locations. A lockable electrical service location is a place outdoors or indoors that is reserved exclusively for housing electrical equipment and which is kept under lock and key. Access is restricted to authorized personnel and persons who have been properly instructed in electrical engineering. Untrained or unskilled persons...

Current-carrying capacity • According to IEC 62271-1 current-carrying capacities refer to the following ambient air temperatures: - Design ambient temperature : 40° C - Operating temperature range : - 5° C to +55° C for primary part • The current-carrying capacity of the panels and busbars depends on the ambient air temperature outside the enclosure. Protection against solid foreign objects, electric shock and ingress of water The NXAIR H switchgear fulfills acc. to the standards • IEC 62271-200 • IEC 60529 the following degrees of protection: • Enclosure: IP4X Internal arc classification •...

Circuit-Breaker Switchgear Type NXAIR H ■ Siemens India - 2019 15

Published by Siemens India Product upgradation is a continuous process. Hence, data in this catalog is subject to change without prior notice. For the latest information, please get in touch with our Sales Offices. Siemens Limited Energy Management Division Medium Voltage & Systems Kalwa Works Tel.: +91 22 3966 8380 www.siemens.com Subject to changes and errors. The information given in this document only contains general descriptions and/or performance features which may not always specifically reflect those described, or which may undergo modification in the course of further development...