Larsen & Toubro U-POWER Omega UW-MTX 3.5EC User Manual

Copyright © 03/2019 Larsen & Toubro. All Rights Reserved.
Air Circuit Breakers
System of
USERS’
Manual
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Larsen & Toubro U-POWER Omega UW-MTX 3.5EC Specifications

General

Brand	Larsen & Toubro
Model	U-POWER Omega UW-MTX 3.5EC
Category	Circuit breakers
Language	English

Summary

Section 1 On Receiving

1.1 Visual Inspection

Inspect breaker carton and breaker for damage before unpacking.

1.2 Unpacking

Procedure for unpacking fixed and draw-out breakers, including accessory removal.

1.3 Handling

Safe handling guidelines for ACB breakers using lifting equipment or personnel.

1.4 Storage

Guidelines for storing ACBs in a cool, dry environment away from corrosive elements.

Section 2 Understanding

2.1 Identification

Identifies breaker components, labels, and rating information.

2.2 Exploring

Details breaker and cradle parts with labeled diagrams for feature identification.

2.3 Racking-out

Procedure for safely racking out draw-out type breakers from the panel.

2.4 Operating

Basic breaker operation including spring charging and ON/OFF button use.

2.5 Technical Data

Comprehensive technical specifications, dimensions, ratings, and weights for ACBs.

Section 3 Installing

3.1 Mounting & Door cut-out

Procedures for mounting ACBs in panels and required door cut-out dimensions.

3.2 Termination

Explains termination methods for fixed and draw-out ACBs with various adaptors.

3.3 Loading in panel

Step-by-step guide for loading ACBs into panels, ensuring correct positioning.

3.4 Control circuit connections

Details wiring for control circuits, SICs, bridges, and electrical position indication (EPI).

Section 4 Accessories: Features & Mounting

4.1 Cradle Mounted Accessories

Describes accessories like safety shutters and door interlocks mounted on the ACB cradle.

4.2 Breaker Mounted Accessories

Covers accessories mounted on the breaker, such as auxiliary contacts and releases.

Section 5 Protection & Control units

5.1 Identification

Identifies different UW-MTX series P&C units and their key features.

5.2 Protection Characteristics

Displays time-current characteristic curves for ACB protection functions.

Section 6 Putting U-POWER Omega System Of Breakers in Operation

6.1 Re-loading in panel

Guide for re-loading ACBs into the panel after maintenance or testing.

6.2 Checking ON-OFF operation

Procedure to verify the ON-OFF operation and spring status of the breaker.

6.3 Testing (Control circuit & Interlocks)

Outlines testing for control circuits, interlocks, and accessory functions.

6.4 Configuring P&C Unit

Instructions for configuring P&C unit settings, including system and protection parameters.

6.5 Trip Simulation of P & C Unit

Details features and use of the trip simulation kit for testing ACB protection.

6.6 U-POWER Omega ACBs in Connected Position

Guide for connecting ACBs to the panel, checking termination, and LED status.

6.7 Securing your Breaker

Explains security features like padlocking for preventing unauthorized access.

Section 7 Maintenance & Operations

7.1 Maintenance schedule & Operations

Provides a schedule for routine and specific maintenance tasks for ACBs.

7.2 Accessories and Spares

Lists available spare parts and accessories with cat numbers and ACB compatibility.

Section 8 Useful Hints

Useful Hints

Presents common troubleshooting situations, probabilities, and solutions for ACB operation.