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Siemens NXPLUS C User Manual

Siemens NXPLUS C
293 pages
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Medium-Voltage Switchgear
Type NXPLUS C Fixed-Mounted Circuit-Breaker Switchgear up to 24 kV,
Extendable
Single Busbar, Metal-Enclosed, Gas-Insulated
M edium -V oltage Switc hgear
INSTALLATION AND
OPERATING
INSTRUCTIONS
Order No.: 802-9081.9
Revision: 11
Issue: 19-01-2018

Table of Contents

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Siemens NXPLUS C Specifications

General IconGeneral
Rated voltageUp to 24 kV
Rated frequency50/60 Hz
Protection degreeIP4X
Insulation mediumSF6
StandardsIEC 62271-200
Operating mechanismSpring-operated

Summary

Safety Instructions

Description

Technical Data

Complete Switchgear

General electrical data including rated voltages, withstand voltages, frequencies, and currents.

Installation

Unloading and Erecting the Switchgear

Instructions for unpacking, checking for damages, and safely unloading and transporting the switchgear.

Assembling the Switchgear

Steps for physically assembling the switchgear panels and components.

Electrical Connections

Steps for making electrical connections, including safety rules and handling hazardous voltage.

Commissioning

Final checks, functional tests, and preparation for energizing the switchgear.

Operation

Operating the Circuit-breaker

Procedures for closing, opening, and charging the closing spring of the circuit-breaker.

Operating the Three-Position Switch

Detailed instructions for operating three-position switches/disconnectors, including manual and motor-operated mechanisms.

Verification of Safe Isolation from Supply

Steps to verify safe isolation using LRM plug-in sockets, VOIS, and CAPDIS indications.

Replacing HV HRC Fuse-links

Step-by-step guide for replacing HV HRC fuse-links, including safety precautions and fuse slide handling.

Operating the Feeder Voltage Transformer

Procedures for disconnecting and connecting feeder voltage transformers.

Cable Testing

Procedures and safety precautions for performing cable tests, including the use of test adapters.

Service Information

Maintenance

General information on maintenance requirements for switchgear and components.

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