Siemens NXAIR - User Manual

Medium-Voltage Switchgear
Air-Insulated Switchgear NXAIR
≤ 17.5 kV / ≤ 40 kA / ≤ 4000 A Busbar Current
OPERATING INSTRUCTIONS
Order No.:
110-0134.9
Issue:
January 2019
Revision:
14
© Siemens AG 2019. All rights reserved.

Siemens NXAIR Specifications

General

Brand	Siemens
Model	NXAIR
Category	Industrial Equipment
Language	English

Summary

General Instructions

Five Safety Rules of Electrical Engineering

Essential safety rules to be observed during operation of products and components.

Personal Protective Equipment (PPE)

Requirements and types of protective equipment for switchgear operation and maintenance.

Due Application

Defines the NXAIR switchgear type, accessibility, and intended use in indoor locations.

Qualified Personnel

Defines requirements for personnel operating and maintaining the product, including necessary training.

Update of the Firmware of Protection Relays

Importance of updating firmware to prevent unauthorized access and security vulnerabilities.

Features

Technical Data

Complete Switchgear

Provides rated voltage, frequency, withstand voltages, and current ratings for the switchgear.

Basic Prescriptions and Standards

Lists the IEC/EN standards and prescriptions the indoor switchgear complies with.

Electromagnetic Compatibility - EMC

Details EMC standards and guidelines applied during design, manufacture, and erection.

Rating Plates

Information found on the rating plate fixed inside the doors of the high-voltage and low-voltage compartments.

IAC Classification

Explains the Internal Arc Classification (IAC) of the panel according to IEC 62271-200.

Panel Dimensions

Provides detailed panel dimensions (width) for various panel types and current ratings.

Operating Conditions

Specifies limit values for ambient air temperature and site altitude for NXAIR switchgear.

Operating Instructions for Circuit-Breaker Type 3 AE

Information on separate operating instructions for circuit-breaker type 3AE.

Contactor Type 3 TL and 3 TM

Details on vacuum contactors type 3TM3 and 3TL8, including their ratings and available panel widths.

Operating Instructions for Contactor Type 3 TL8 and 3 TM3

Information on separate operating instructions for contactors type 3TL8 and 3TM3.

Switch-Fuse Combination Type L-TRI 5 F

Describes the switch disconnector-fuse combination type L-TRI 5F and its compliance with IEC 62271-105.

Operating Instructions for Switch-Fuse Combination L-TRI 5 F

Information on separate operating instructions for switch-fuse combination type L-TRI 5F.

Overview of Panel Types

Panel Design

Basic Design

Explains the basic design of NXAIR as withdrawable and truck-type switchgear.

Basic Design Circuit-Breaker Panel

Provides a sectional view and labels for the basic design of a circuit-breaker panel.

Basic Design Circuit-Breaker Panel with Forced Ventilation

Shows a sectional view and labels for a circuit-breaker panel with forced ventilation.

Basic Design Contactor Panel with Panel Width 435 mm

Shows a sectional view and labels for a basic design contactor panel with 435 mm width.

Basic Design Contactor Panel with Panel Width 600 mm

Shows a sectional view and labels for a basic design contactor panel with 600 mm width.

Basic Design Switch-Disconnector Panel

Provides a sectional view and labels for the basic design of a switch-disconnector panel.

Interlocks

Mechanical Interlocks in Panel Versions with Withdrawable Parts

Details the internal preconditions required for various actions with withdrawable parts.

Mechanical Interlocks in Panel Versions with Switching-Device Trucks

Lists internal preconditions for actions involving switching-device trucks.

Mechanical Interlocks in Panel Versions with Switch-Fuse Combination

Outlines internal preconditions for operating switch-fuse combinations.

Additional Electromagnetic Interlocks (Optional)

Describes additional electromagnetic interlocks and their preconditions.

Additional Padlock Interlock (Optional)

Details optional padlock interlocks and their preconditions.

Additional Key-Operated Interlock (Optional)

Explains optional key-operated interlocks and their preconditions.

Accessories

Operating Tools

Illustrates and describes various operating tools used with the switchgear.

Service Truck

Provides CAUTION notes regarding the weight and protruding parts of the service truck.

Service Truck Versions

Mentions service truck versions included as accessories for panels with withdrawable parts.

Customer Support

Service

Information on contacting Siemens after-sales service for functional issues.

Repairs

Details that repairs are performed by trained Siemens technicians with original spare parts.

Before You Call

Lists information required for quick query resolution, available on the rating plate.

Service Contact

Provides contact details for the Energy Customer Support Center.

Operating the Circuit-Breaker Panel

Control Elements at the Front Side of the Panel

Identifies and describes the control elements located on the front of the circuit-breaker panel.

Opening the High-Voltage Door

Provides WARNING and CAUTION notes regarding safety and injury prevention when opening the high-voltage door.

Closing the High-Voltage Door

Provides WARNING and CAUTION notes regarding safety and injury prevention when closing the high-voltage door.

Racking the Withdrawable Circuit-Breaker; Circuit-Breaker Truck to Service Position

Provides NOTICE about maloperation and preconditions for manually racking the circuit-breaker to service position.

Racking the Withdrawable Circuit-Breaker; Circuit-Breaker Truck to Test Position

Provides NOTICE about maloperation and preconditions for manually racking the circuit-breaker to test position.

Closing the Circuit-Breaker Electrically

Provides NOTICE and INFORMATION regarding conflicting operations, unexpected noise, and spring charging during electrical closing.

Opening the Circuit-Breaker Electrically

Provides NOTICE and INFORMATION regarding conflicting operations, unexpected noise, and spring charging during electrical opening.

Closing the Circuit-Breaker Manually

Provides NOTICE and INFORMATION regarding conflicting operations and auxiliary voltage for manual closing.

Opening the Circuit-Breaker Manually

Provides NOTICE and INFORMATION regarding conflicting operations and manual opening.

Discharging the Spring Energy Store

Provides NOTICE and INFORMATION regarding conflicting operations and manual discharging of the spring energy store.

Charging the Spring Energy Store Manually

Explains manual charging of the spring energy store, including WARNING and NOTICE about tool usage and maloperation.

Earthing the Feeder Manually

Provides NOTICE and PRECONDITIONS for manually earthing the feeder.

De-earthing the Feeder Manually

Provides NOTICE about maloperation for manual de-earthing.

Removing the Low-Voltage Connector

Lists preconditions and procedure for removing the low-voltage connector.

Plugging on the Low-Voltage Connector

Provides INFORMATION on unexpected motor noise and preconditions for plugging on the low-voltage connector.

Taking the Withdrawable Circuit-Breaker out of the Panel

Provides CAUTION notes for injury and heavy weight, and lists preconditions for removing the circuit-breaker.

Inserting the Withdrawable Circuit-Breaker in a Panel

Provides CAUTION and NOTICE notes regarding maloperation and damage risks when inserting the circuit-breaker.

Earthing and De-earthing the Busbar System

Earthing the Busbar System Manually

Provides WARNING and NOTICE regarding risk of falling and maloperation during manual earthing.

De-earthing the Busbar System Manually

Provides WARNING and NOTICE regarding risk of falling and maloperation during manual de-earthing.

Operating the Shutters

Operating the Shutter to the Busbar Compartment in the Switching-Device Compartment

Provides DANGER notes regarding electric shock and safe operation of shutters.

Operating the Shutter to the Connection Compartment in the Switching-Device Compartment

Provides DANGER and CAUTION notes regarding electric shock and injury for operating shutters to the connection compartment.

Operating the Shutter to the Busbar Compartment in the Contactor Panel with Panel Width 435 mm

Explains that the mechanism differs and provides DANGER/CAUTION notes.

Operating the Shutter to the Connection Compartment in the Contactor Panel with Panel Width 435 mm

Explains that the mechanism differs and provides DANGER/CAUTION notes.

Accessing the Connection Compartment Through the Front

Preparations Before Accessing the Connection Compartment

Provides DANGER notes regarding electric shock and safety precautions before accessing the compartment.

Accessing the Connection Compartment Through the Switching-Device Compartment

Provides WARNING notes for electric shock and access through the switching-device compartment.

Installing the Vertical Partition and the Ventilation Duct Type II in the Switching-Device Compartment

Provides DANGER, CAUTION, and NOTICE notes regarding electric shock, sharp edges, damages, and cleaning.

Accessing the Connection Compartment Through the Rear

Accessing the Connection Compartment Through the Rear Side of the Panel

Provides DANGER, WARNING, and CAUTION notes regarding electric shock, reduced safety, and sharp edges.

Installing the Rear Wall on the Connection Compartment

Provides CAUTION and NOTICE notes regarding sharp edges, damages, cleaning, and preconditions for installing the rear wall.

Accessing the Connection Duct Through the Rear Side of the Panel

Provides DANGER, WARNING, and CAUTION notes regarding electric shock, reduced safety, and sharp edges for accessing the connection duct.

Key-Operated Interlocks

Key-Operated Interlocks for the Withdrawable Part; Switching-Device Truck

Explains the function and design of key-operated interlocks for various panels.

Key-Operated Interlocks for the Busbar Earthing Switch

Explains function and design of key-operated interlocks for the busbar earthing switch.

Fitting the Earthing Device

Design, Application and Inspection of the Earthing Device Accessories

Provides DANGER notes regarding impermissible voltage/current and lists design specifications for the earthing device.

Connecting the Earthing Device

Provides DANGER notes for electric shock and lists preconditions and procedure for connecting the earthing device.

Removing the Earthing Device

Provides DANGER notes regarding electric shock and lists preconditions and procedure for detaching the earthing device.

Panels with Motor Operating Mechanism Control

Overview of Functionality

Explains that circuit-breaker panels can have motor operating mechanism control for racking and switching functions.

Opening the Control Door

Provides NOTICE regarding conflicting operations and maloperation when opening the control door.

Closing the Control Door

Details preconditions and procedure for closing the control door, including padlocking.

Selecting Manual Operation for Racking

Provides NOTICE regarding conflicting operations and selecting manual operation for racking.

Selecting Electrical Operation for Racking

Provides NOTICE regarding conflicting operations and information about electrical racking.

Selecting Interlocking

Provides NOTICE regarding conflicting operations and information about blocking racking.

Racking the Withdrawable Circuit-Breaker; Circuit-Breaker Truck to Service Position Manually

Provides NOTICE regarding conflicting operations and maloperation for manual racking to service position.

Racking the Withdrawable Circuit-Breaker; Circuit-Breaker Truck to Test Position Electrically

Provides NOTICE about maloperation, conflicting operations, and safety for electrical racking to test position.

Racking the Withdrawable Circuit-Breaker; Circuit-Breaker Truck to Test Position Manually

Provides NOTICE regarding conflicting operations, maloperation, and stress on the motor operating mechanism for manual racking to test position.

Opening the Circuit-Breaker Manually

Explains manual opening of the circuit-breaker and provides NOTICE about conflicting operations.

Closing the Circuit-Breaker Manually

Explains manual closing of the circuit-breaker, noting it's only possible with the control door open.

Charging; Discharging the Spring Energy Store Manually

Explains manual charging/discharging of the spring energy store, noting it can only be done manually.

Earthing; De-earthing the Feeder Manually

Explains manual earthing/de-earthing of the feeder and mentions control door requirement.

Earthing; De-earthing the Feeder Electrically

Provides NOTICE about maloperation and conflicting operations for electrical earthing/de-earthing.

Earthing; De-earthing the Busbar System Manually

Explains manual earthing/de-earthing of the busbar system and provides NOTICE about conflicting operations.

Earthing; De- the Busbar System Electrically

Provides NOTICE about conflicting operations for electrical earthing/de-earthing of the busbar system.

Panel Heater

Heater Versions

Describes the types of heaters available, including mounting location and resistor values.

Mechanical Temperature Controllers

Provides NOTICE about damage due to incorrect application and describes mechanical temperature controllers.

Electronic Temperature and Humidity Controller

Provides NOTICE about damage due to incorrect application and describes electronic controllers' functions.

Applications for Temperature Controller

Lists applications for temperature controllers, including operating conditions and notices.

Service Information

Maintenance

Emphasizes the importance of maintenance for undisturbed operation and divides measures into visual inspection and general maintenance.

Time Schedule for Maintenance Measures

Provides a recommended time schedule for maintenance measures, including intervals and operational facts.

Visual Inspection

Details the steps for performing a visual inspection, including checking for damages, dust, and humidity.

Preventive Maintenance

Provides DANGER notes for electric shock and foreign objects, and NOTICE for damage due to incorrect cleaning or greasing removal.

Lubricants to be Used

Provides CAUTION notes for lubricant application and a table listing components, lubricants, and suppliers.

Overpressure Monitors (Optional), Function Test

Explains the function test for overpressure monitors, providing DANGER and test unit information.

Spare Part Orders

Lists information required for ordering spare parts.

Replacement of Panels and Components

Advises contacting Siemens representative for panel and component replacement.

Disposal

Provides information on the environmental compatibility of NXAIR switchgear and material composition.

Trouble Shooting

Panels with Withdrawable Part

Details interlocking issues with withdrawable parts and their causes and remedies.

Panels with Switching-Device Truck

Details interlocking issues with switching-device trucks and their causes/remedies.

Panels with Switch-Fuse Combination

Lists faults related to switch-fuse combinations, their causes, and remedies.

Imprint

Siemens AG

Provides contact and copyright information for Siemens AG.