DET-653C EntelliGuard
®
G Circuit Breaker Application Guide
24-May-12 Table of Contents
©2012 General Electric All Rights Reserved
SECTION 1 – GENERAL INFORMATION
Introduction .............................................................................................................................................................................................................. 1
Table 1.1. Device Standards and References ............................................................................................................................... 1
Table 1.2. Device Ratings ........................................................................................................................................................................ 1
Table 1.3. ANSI/UL1066 Ratings .......................................................................................................................................................... 2
Table 1.4. UL489 Ratings ......................................................................................................................................................................... 2
Table 1.5. Non-Automatic Circuit Breaker – ANSI Version Ratings ................................................................................... 2
Table 1.6. Non-Automatic Circuit Breaker/Molded Case Switch – UL Version Ratings .......................................... 2
Table 1.6b UL489B Ratings .................................................................................................................................................................... 3
SECTION 2 – FEATURES AND CHARACTERISTICS
Figure 2.1. EntelliGuard G Features and Characteristics ................................................................................................................. 4
STANDARD AND OPTIONAL FEATURES ....................................................................................................................................................... 5
Short Time Rating (1/2 Sec) ..................................................................................................................................................................... 5
Short Circuit/High Interruption Rating .............................................................................................................................................. 5
Thermal Performance ............................................................................................................................................................................... 5
Table 2.1. Sensors Available .......................................................................................................................................................... 5
Reverse Feed .................................................................................................................................................................................................. 5
Two-Step Stored Energy Mechanism ................................................................................................................................................ 5
Field Installable Trip Units and Accessories ................................................................................................................................... 5
Coils ............................................................................................................................................................................................................ 6
Breaker/Main Contact Status ................................................................................................................................................................ 6
Motor Operator ............................................................................................................................................................................................. 6
Electrical Closing Button .......................................................................................................................................................................... 6
Ready to Close Indicator .......................................................................................................................................................................... 6
Mounting Straps/Accessories ............................................................................................................................................................... 6
Auxiliary Switches ........................................................................................................................................................................................ 6
Interlocks .......................................................................................................................................................................................................... 6
Breaker Status Indicators ........................................................................................................................................................................ 6
Rejection Feature ......................................................................................................................................................................................... 7
Through-Door Racking .............................................................................................................................................................................. 7
Padlocking Devices ..................................................................................................................................................................................... 7
Key Interlock ................................................................................................................................................................................................... 7
Shutters ............................................................................................................................................................................................................ 7
Carriage Position Switch .......................................................................................................................................................................... 7
Lifting Beam .................................................................................................................................................................................................... 7
IP Covers ........................................................................................................................................................................................................... 7
Mechanical Counter ................................................................................................................................................................................... 7
Cable Interlocks (OEM Applications Only) ........................................................................................................................................ 8
Bell Alarm Contact ....................................................................................................................................................................................... 8
SECTION 3 – ENTELLIGUARD TU TRIP UNIT SYSTEM
Introduction ............................................................................................................................................................................................................ 9
Reliability without Compromising Protection ......................................................................................................................................... 9
Arc Flash and the EntelliGuard TU Trip Unit ............................................................................................................................................ 9
Figure 3.1. Arcing Current ...................................................................................................................................................................... 10
Selectivity with Molded case Circuit Breakers and Other Devices ............................................................................................ 10
Figure 3.2. Selectivity Curve.................................................................................................................................................................. 10
Table 3.1. EntelliGuard Selectivity Above GE Current Limiting Circuit Breakers ....................................................... 10
Table 3.2. Maximum Instantaneous Pickup Multipliers for GE Circuit Breakers ....................................................... 11
Table 3.3. Selectivity with EntelliGuard TU Trip Units in ANSI and ICCB/ Power Break II Circuit Breakers .. 13
Above Downstream Feeders ......................................................................................................................................................................... 14
The Waveform Recognition Selective Instantaneous ...................................................................................................................... 14
Table 3.4. Minimum Selective Clearing Times for an EntelliGuard G Circuit Breaker ............................................. 15
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