Introduction; General System Description; System Type; System Construction - Eaton Power Xpert UX 12 User Manual

Introduction

1 Introduction
1.1

General system description

®
The Eaton Power Xpert
designed for medium-voltage supply stations such as
main supply stations, distribution sub-stations and
industrial connections. It can also be used in industry and
power plants as motor control centers.
1.1.1

System type

®
The Eaton Power Xpert UX system is an air-insulated,
medium voltage switchgear system. It is defined as
'metal enclosed switchgear' in accordance with
IEC 62271-200 and classified in the
category LSC2B-PM.
1.1.2

System construction

®
A Power Xpert UX panel is constructed of sheet metal
circuit breaker panels, withdrawable vacuum circuit
breakers and withdrawable contactors.
The main busbar system is located at the top of the
panels. It consists of copper bars which may be
supported by insulator depending on rated short-circuit
current. The bars are provided with an insulation layer
over their entire length.
Pressure relief vents at the top of the circuit breaker
panels provide protection against overpressure in any of
the main compartments (busbar, circuit breaker or cable)
that may be caused if an internal arc occurs.
An additional low-voltage compartment (for secondary
equipment) is fitted to a circuit breaker panel
The installation is divided functionally into panels (such
as circuit breaker panels, a busbar section panel, etc.).
The panel function and the rated current of the panel in
question determine the width of the panel.
Options
The installation may be provided with optional equipment
such as busbar insulating bushings, voltage transformers
etc.
The standard installation supplied is a single busbar
model.
For further details, see technical data.
6
Power Xpert
UX switchgear system is
®
UX with W-VACi circuit breaker 6063308 G01 01 14 July 2011 www.eaton.com
1.2

Using the manual

1.2.1

Target group

The switchgear is designed for use by personnel who are
expert or adequately trained in using switchgear and/or
carrying out electrical operations.
For definitions of these terms, see chapter 8 – Glossary.
1.2.2

Notation guide

This manual uses warning boxes to alert the user to
possible dangers while operating or maintaining the
equipment:
Personal (fatal) danger to personnel and
bystanders.
Danger of damage to equipment.
Important note for clarification.
REMARK
Useful advice.
1.2.3

Structure of the manual

The manual contains 9 chapters.
Chapters 1 and 2 contain general information on the
system design and construction and general safety
aspects. The information is presented in the form of
descriptive texts, supported by illustrations as necessary.
Illustrations are numbered consecutively for each
chapter, and are captioned if necessary.
Chapters 3 to 7 consist mainly of procedures. These
procedures contain step-by-step descriptions of actions
in the order in which they should be carried out.
Illustrations are on the same page as the relevant step
and have the same number.
Never take any action without knowing what
effect it will have.
REMARK
Read through all actions first, using the relevant
figures. Contact Eaton if you do not understand what
you have to do.
WARNING
CAUTION
NOTE
WARNING