Siemens NXPLUS C Product information

up to

36 kV

NXPLUS C – The Multi-Tool

Gas-insulated medium-voltage switchgear

When it comes to medium-voltage power distribution, Siemens has developed a wide range of products and solutions, based on experience, innovation, and reliability.

The factory-assembled, type-tested, and metal-enclosed NXPLUS C switchgear impresses with the advantages of the proven vacuum switching technology – a technology that made gas insulation economical in its class.

Hermetically tight, welded switchgear vessels made of stainless steel as well as singlepole solid busbar insulation make the parts of the primary circuit under high voltage of NXPLUS C switchgear insensitive to certain aggressive ambient conditions such as saline air, air humidity, dust, and condensation. It is tight to ingress of foreign objects, such as dust, pollution, humidity and small animals. Furthermore, the application is independent of the site altitude.

Thanks to the use of SF6 insulation, compact dimensions are possible and thus existing switchgear rooms and substation rooms can be used effectively, new constructions cost less due to lower space requirements and so costly city-area space is saved.

The use of digital secondary systems and combined protection and control devices ensures clear integration in process control

systems, flexible and highly simplified adaptation to new system conditions and thus to cost-efficient operation. A thoroughly convincing switchgear concept that will, under normal operating conditions, be expected to have a service life of at least 35 years, probably 40 to 50 years. As an option, resistance against shock, vibration, and earthquakes can be provided.

The gas-insulated switchgear NXPLUS C is a prime choice for use in transformer and switching substations, e.g. in power supply companies, power stations, cement indus-

try, automobile industry, shipbuilding industry, iron and steel works, rolling mills, mining industry, textile, paper and food industries, chemical and petroleum industry, pipeline and offshore installations, and so on. It is also commonly used in traction power supply systems.

Your advantages

•Independent of environment and climate

•Maintenance-free

•Compact

•Safe for operating personnel

•Cost-efficient

•Ecological

•Reliable and safe operation

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NXPLUS C Medium-Voltage Switchgear – Product range

					40 kVA
					10 kVA
Circuit-	Dis-	Bus	Bus	Switch-	Auxiliary	Metering	Air-insulated	Ring-	Vacuum	Dummy
breaker	connector	sectio-	sectionalizer,	disconnectransformer		panel	metering	main	contactor	panel
panel	panel	nalizer	2-panel	tor panel	panel		panel	panel	panel

Technical data of NXPLUS C

Rated
Voltage	up to	17.5 kV	24 kV	36 kV
Frequency	Hz	50 / 60	50 / 60	50 / 60
Short-duration power-frequency	kV	38	50	70
withstand voltage
Lightning impulse withstand voltage	kV	95	125	170
Short-circuit breaking current	max. kA	31.5	25	25
Short-time withstand current, 3 s	max. kA	31.5	25	25
Short-circuit making current	max. kA	80 / 82	63 / 65	63 / 65
Peak withstand current	max. kA	80 / 82	63 / 65	63 / 65
Normal current for busbar	max. A	2,500	2,500	1,250
Normal current for feeders	max. A	2,500	2,500	1,250

Dimensions of NXPLUS C

Circuit-breaker panel

Dimensions

Dimensions in mm

Width

630 A / 800 A

450

(spacing)

630 A / 800 A / 1,000 A / 1,250 A

600

Height

1,600 A / 2,000 A / 2,500 A

900

Standard design

2,250

Depth

With horizontal pressure relief duct

2,640

Cable connection front bottom

1,225

Cable connection rear top/rear bottom

1,850

Performance features

•Type-tested according to IEC 62271-200

•Sealed pressure system with SF6 filling for the entire service life

•Safe-to-touch enclosure and standardized connections for plug-in cable terminations

•Loss of service continuity category for switchgear: LSC 2 (for air-insulated metering panel: LSC 1)

•1-pole insulated and screened busbar

•3-pole, gas-insulated switchgear vessels with three-position switch and circuitbreaker or vacuum contactor

•Operating mechanisms and transformers are located outside the switchgear vessel and are easily accessible

•Metal-enclosed, partition class PM

•Optionally with horizontal pressure relief duct

•Extended number of operating cycles

(up to 17.5 kV, up to 31.5 kA, up to 1,250 A)

–Disconnecting function: 5,000 ×, 10,000 ×

–Ready-to-earth function: 5,000 ×, 10,000 ×

–Circuit-breaker function: 30,000 ×

•Internal arc classification for:

–Wall-standing arrangement:

IAC A FL 25 kA / 31.5 kA, 1 s

–Free-standing arrangement:

IAC A FLR 25 kA / 31.5 kA, 1 s

For the U.S. published by Siemens Industry Inc. 100 Technology Drive Alpharetta, GA 30005 United States

Published by Siemens AG

Smart Infrastructure

Distribution Systems Mozartstraße 31c

91052 Erlangen, Germany

Article No. SIDS-B10009-01-7600

Dispo 30403 | PU183/006184 0820

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 of the products. The requested performance features are binding only when they are expressly agreed upon in the concluded contract.

All product designations may be trademarks or other rights of Siemens AG, its affiliated companies or other companies whose use by third parties for their own purposes could violate the rights of the respective owner.

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