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

Copyright © 03/2019 Larsen & Toubro. All Rights Reserved.
Air Circuit Breakers
System of
USERS’
Manual
80 kA
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400 / 440 V
660 / 690 V
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50 kA 3.0 s
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Larsen & Toubro U-POWER Omega UW-MTX 3.5 Specifications

General

Rated Current (In)	3.5A
Poles	1P, 2P, 3P, 4P
Breaking Capacity	10kA
Mounting	DIN Rail
Rated Current	3.5 A
Mounting Type	DIN Rail
Type	MCB
Number of Poles	1, 2, 3, 4
Trip Curve	C

Summary

On Receiving

Visual Inspection

Inspect carton for damage and verify breaker details against the order.

Unpacking

Step-by-step guide for safely unpacking fixed and draw-out breakers.

Handling

Guidelines for safely lifting and transporting breakers using appropriate equipment.

Storage

Instructions for storing breakers in a cool, dry, dust-free environment, away from corrosive elements.

Understanding

Identification

Details on identifying breaker components and rating information via labels and diagrams.

Exploring

Explores breaker components and functions with detailed diagrams and illustrations.

Racking-out

Step-by-step procedure for safely racking out draw-out breakers from their cradles.

Operating

Instructions on charging the spring and operating the breaker using ON/OFF buttons.

Technical Data

Comprehensive technical specifications and parameters for the air circuit breakers.

Installing

Mounting & Door Cut-out

Guidance on mounting breakers in panels and details of panel door cut-outs.

Termination

Information on various termination methods and adaptors for fixed and draw-out breakers.

Loading in Panel

Step-by-step process for loading and connecting breakers into their panel positions.

Control Circuit Connections

Details on connecting control circuits, including SICs, wiring, and position indication.

Accessories: Features & Mounting

Cradle Mounted Accessories

Details on accessories like safety shutters and interlocks mounted on the breaker cradle.

Breaker Mounted Accessories

Information on accessories mounted directly on the breaker, such as auxiliary contacts.

Protection & Control Units

Identification

Identifies different U-MTX protection and control unit models and their key features.

Protection Characteristics

Graphical representation of trip curves for protection functions like overload and short circuit.

Putting Breakers in Operation

Re-loading in Panel

Step-by-step guide for re-loading breakers into the panel and ensuring correct connection.

Checking ON-OFF Operation

Procedure to verify the breaker's ON/OFF functionality and spring charging status.

Testing

Guidance on testing control circuits, interlocks, and accessory functions of the breaker.

Setting P&C Unit

Instructions for configuring protection and control (P&C) unit settings for various U-MTX models.

Trip Simulation of P&C Unit

Information on using the trip simulation kit for testing protection functions and release behavior.

ACBs in Connected Position

Steps for ensuring breakers are correctly connected, checking terminations, and LED indications.

Securing your Breaker

Explains security features like padlocking for ON/OFF buttons, covers, shutters, and locks.

Maintenance & Operations

Maintenance Schedule & Operations

Outlines routine and specific maintenance tasks for U-POWER Omega ACB series.

Accessories and Spares

Catalog of available spare parts and accessories for U-POWER Omega ACB.

Useful Hints