Eaton MDN-616 - User Manual

Double-wide Fixed
Standard Frame Fixed
Narrow Frame Fixed
Instructions for Installation, Operation and Maintenance of
Magnum DS, DSX and DSL Low Voltage Power Circuit Breakers
I.B. 2C12060H08 Supersedes I.B. 2C12060H07 dated April 2005
Effective May 2006
IB2C12060H08
For more information visit: www.EatonElectrical.com
www . ElectricalPartManuals . com

Summary

SECTION 1: INTRODUCTION

1-1 General Information

Provides general information about Magnum DS, DSX, and DSL circuit breakers.

1-2 Safety Features

Details built-in interlocks and safety features for hazard reduction.

1-3 Safety Practices

Lists essential safety practices for installation, operation, and maintenance.

1-4 Qualified Personnel

Defines qualifications required for operating and maintaining breakers.

SECTION 2: RECEIVING, HANDLING AND INSTALLATION

2-3 Unpacking Circuit Breaker

Provides instructions for safely unpacking circuit breakers.

2-4 Lifting Circuit Breaker

Explains safe lifting procedures for circuit breakers.

2-5 Circuit Breaker Inspection

Outlines visual inspection steps for circuit breakers.

2-6 Installing Drawout Circuit Breaker

Details the process for installing drawout circuit breakers.

2-6.1 Rejection Interlocks

Explains the function and importance of rejection interlocks.

2-6.2 Circuit Breaker Positioning

Describes the four normal positions for drawout circuit breakers.

2-6.3 Levering Circuit Breaker

Details the procedure for levering circuit breakers into position.

SECTION 3: CIRCUIT BREAKER DESCRIPTION AND OPERATION

3-1.1 MDSL Application;Operation

Details the application and operation of MDSL circuit breakers.

3-2 Basic Circuit Breaker Assembly

3-3 Pole Units

3-3.1 Primary Moving Contacts

3-3.2 Primary Stationary Contacts

3-4 Operating Mechanism

3-4.1 Manual Operation

3-4.2 Electrical Operation

3-4.3 Anti-Pump Feature

3-5 Arc Chambers

3-5.1 Arc Chute

3-6 Electronic Tripping System

Describes the three-part electronic tripping system.

3-6.1 Microprocessor-based Trip Unit

Discusses the Digitrip RMS trip units and their features.

3-6.2 Rating Plug

Explains the function and importance of the rating plug.

3-6.3 Current Sensors

Details the installation and function of current sensors.

3-6.6 Making Current Release

3-7 Secondary Contacts and Connection Diagrams

3-7.1 Connection Diagrams

SECTION 6: INSPECTION AND MAINTENANCE

6-1 General

6-2 General Cleaning Recommendations

6-3 When to Inspect

6-4 What to Inspect

6-4.1 Functional Field Testing

Describes functional field testing procedures for breakers.

6-4.2 Arc Chute Inspection

6-4.3 Primary Contact Inspection

6-5.1 Rating Plug Replacement

6-5.2 Current Sensor Replacement

6-5.3 Current Limiter Replacement (MDSL)

SECTION 7: TROUBLESHOOTING

Eaton MDN-616 Specifications