Making Current Release is indicated by the Instantaneous LED. Limited to 1200 Amperes this is only for UL versions, not for IEC models. System Diagnostics Status/Long Pick-up LED Table 1.1 Protection Types Available for Digitrip Trip Units (See Table 1.1 for available protection types.) The Digitrip 220, 520, 520M and 520MC trip units may be applied on both 50 and 60 Hertz systems. Only models 520MC and 520MCi provide communications. The Magnum Digitrip line of trip units consists of the 220, 520, 520M and 520MC for UL standards and models 220, 520i, 520Mi and 520MCi for IEC standards. Throughout this Instructional Leaflet, the use of the term “Magnum Breakers” refers to both the Magnum and Magnum DS low-voltage, AC power circuit breakers. This instruction book specifically covers the application of Digitrip Trip Units (see Figure 1.1) installed in Magnum and Magnum DS Breakers. The trip units are in removable housings, installed in the breaker, and can be replaced or upgraded in the field by the customer. 1.0 GENERAL DESCRIPTION OF DIGITRIP TRIP UNITS The Digitrip Trip Units are breaker subsystems that provide the protective functions of a circuit breaker. If you have any questions or need further information or instructions, please contact your local representative or the Customer Support Center at 1-80. OBSERVE AND COMPLY WITH ALL GENERAL AND LOCAL HEALTH AND SAFETY LAWS, CODES, AND PROCEDURES.įigure 1.1 Digitrip 520MC Trip Unit with Rating Plug NOTE: The recommendations and information contained herein are based on experience and judgement, but should not be considered to be all inclusive or to cover every application or circumstance which may arise. WARNING OBSERVE ALL RECOMMENDATIONS, NOTES, CAUTIONS, AND WARNINGS RELATING TO THE SAFETY OF PERSONNEL AND EQUIPMENT. CUTLER-HAMMER IS NOT LIABLE FOR THE MISAPPLICATION OR MISINSTALLATION OF ITS PRODUCTS. ALWAYS VERIFY THAT NO VOLTAGE IS PRESENT BEFORE PROCEEDING. DEATH OR SEVERE PERSONAL INJURY CAN RESULT FROM CONTACT WITH ENERGIZED EQUIPMENT.
CUTLER HAMMER DIGITRIP 520 MANUAL INSTALL
WARNING DO NOT ATTEMPT TO INSTALL OR PERFORM MAINTENANCE ON EQUIPMENT WHILE IT IS ENERGIZED. 34 Appendix C Typical Breaker Master Connection Diagram. 28 Appendix A Zone Interlocking Examples. 28 9.1 Magnum and Magnum DS Circuit Breakers. 27 7.0 Frame Ratings (Sensor Ratings and Rating Plugs). 25 5.4 Performance Testing for Ground Fault Trip Units - Primary Injection. 25 5.3.2.1 Description of Handheld Test Kit. 22 INCOM Communications (520MC model only).
10 Current Sensors (Magnum Frames greater than 3200A). 9 Current Sensors (Magnum Frames less than or equal to 3200A). 7 General Description of Magnum Circuit Breakers. 6 Ground Alarm/Power Supply Module (520M & 520MC Models only). General Description of Digitrip Trip Units.
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