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Circuit-Breaker IZM
Operating Manual
08/07 AWB1230-1407GB
A
W e keep power under control.

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Summarization of Contents

Construction
Circuit-breaker
Details the physical construction and components of the circuit-breaker.
Withdrawable unit
Describes the construction of the withdrawable unit for the circuit-breaker.
Labels
Circuit-breaker equipment label
Identifies circuit-breaker equipment with terminal designations and functions.
Circuit-breaker label
Displays technical specifications and standards compliance of the circuit-breaker.
Identification of the control unit
Shows how to identify different types of control units for IZM circuit-breakers.
Rating plug label
Describes the label that indicates the rated current of the circuit-breaker.
Withdrawable unit label
Shows the label on the withdrawable unit with key specifications and handling numbers.
Transport
Overseas packing
Provides instructions for overseas packing and humidity check.
Unpacking
Instructions for unpacking the circuit-breaker and inspecting for damage.
Lifting by crane
Safety instructions and weight specifications for lifting the circuit-breaker by crane.
Mounting
Installation
General installation guidelines including mounting position and safety clearances.
Connecting bars
Details horizontal, flange, and front connection methods for bars.
Connection of main conductors
Specifies minimum cross-sections for main conductor connections.
Auxiliary conductor connection
Describes terminal assignments and retrofitting for auxiliary conductors.
Connection of protective conductor
Details how to connect the protective conductor for fixed and withdrawable units.
Changeover of fixed mounting circuit-breaker into withdrawable circuit-breaker
Outlines the steps and considerations for converting a fixed breaker to withdrawable.

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