Secheron UR46-82S - User Manual

Document number: SG104148TEN
Language: En Revision: B01 Issue date: 20.8.2012
Instructions manual
DC High speed circuit-breaker
UR46-81/82S
Number of pages: 68
SG104148TEN-B01 Established by: Desbaillet Checked by: Released by:
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Summary

A. Introduction

A.1 General description

Overview of the circuit-breaker, its function, and applications.

A.1.4 Functions

A.2 Safety precautions

Critical safety measures for handling, installation, and operation.

A.2.1 General precautions

General safety warnings related to high voltage and moving parts.

A.2.2 Safety requirements for the installation

Safety measures for installing equipment connected to the breaker in vehicles.

A.2.3 Hazard information

Meanings of DANGER, WARNING, CAUTION, and IMPORTANT labels.

A.2.4 Personnel use requirements

Specifies requirements for skilled and instructed personnel.

B. Technical specifications

B.1 Characteristics

Electrical and thermal parameters: voltage, current, capacity, operating conditions.

B.1.1 Breaking current parameters

Defines parameters related to breaking current, including I_ss, Î_ss, I_cut off.

B.1.2 Main circuit

Technical specifications for the main circuit of the breaker.

B.1.3 Control circuit

B.2 Breaker control

C. Installation

C.1 Weight and dimensions

C.8 Tightening torques

C.9 Mounting

Details mounting positions and clearance requirements for installation.

C.9.1 Mounting position

C.9.2 Clearances to be observed in operating position

C.11 Earth connection

Describes how to properly connect the earthing conductor.

C.12 High voltage connections

Guides on making high voltage connections with cables or bars.

C.12.1 Recommended dimensions of the bars;cables

C.13 Maximum current release (Id) setting

Details how to set the maximum current release value (Id).

C.13.1 Direct release

Information on the direct release mechanism and its options.

C.13.2 Setting procedure

Step-by-step guide for setting the maximum current release.

C.14 Final visual inspection and tests

Outlines final checks and tests before placing the breaker into service.

D. Maintenance

D.1 Required tools and consumable

D.2 Periodicity of the inspections

Specifies the recommended frequency for visual and detailed inspections.

D.3 Procedure

D.4 Part replacement criteria

Defines criteria for replacing worn or damaged parts based on wear or cycles.

D.6 Detailed inspection

Specific checks for cleaning contact areas and measuring wear.

D.6.2 Measuring the W contact wear dimension

D.6.3 Check and adjustment of the X clearance

D.6.4 Check and adjustment of the Y clearance

D.6.5 Check and adjustment of the Z clearance

D.7 Replacement of the main contacts and the pole

Step-by-step guide for replacing main contacts and poles.

D.7.1 Removal of the fixed contact, the pole and the metal strips

Instructions for removing fixed contacts, poles, and metal strips.

D.7.2 Replacement of the moving contact

Provides instructions for replacing the moving contact.

D.7.3 Reassemble the metal strips, the pole and the fixed contact

D.8 Replacement of the fork unit

Details the procedure for replacing the fork unit.

D.9 Replacement of the arc chute parts

Explains how to replace de-ionizing plates, baffles, and horns.

D.9.1 Replacement of de-ionizing plates and baffles

D.9.2 Replacement of the horns

D.10 Replacement of the closing device

Step-by-step guide for replacing the closing device.

D.11 Replacement of the closing core and the spring

D.12 Replacement of the direct release

Procedures for removing and installing the direct release.

D.13 Replacement of the pusher and the shock absorber

E. Trouble shooting

E.1 Procedure

General procedure for troubleshooting breaker malfunctions.

E.1.1 Main circuit malfunctions

E.1.2 Auxiliary switches malfunctions

E.2 Adjustments of the closing coil

Details procedures for adjusting the closing coil gap for E and M types.

E.3 Performance check

E.4 Replacement of the auxiliary contacts

Step-by-step guide for replacing damaged auxiliary contacts.

G. Options

G.3 Manual tripping device: M3 type

G.4 Indirect releases

G.5 Checking and adjusting the J clearance

G.6 Vertical mechanical release

G.8 Direct release type DE

Details the DE type direct release, its settings, and maintenance.

Secheron UR46-82S Specifications

General

Brand	Secheron
Model	UR46-82S
Category	Circuit breakers
Language	English