GE Industrial Solutions Entellisys Installation - Manual (Page 23)

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Entellisys Low Voltage Switchgear
Chapter 3. Description
EGS/EGH/EGX/EGF -32 Circuit Breaker
• 3200-ampere frame size
• Standard 65,000-ampere interrupting and short-time
capability at 480 volts
• 30-inch wide sections, Two-high stacking in 38-inch wide
sections
• Increased IC and short-time rating 85,000 amperes
(EGH-32) or 100,000 amperes (EGX-32) at 480 volts.
EGS/EGX/EGF -40 Circuit Breaker
• 4000-ampere frame size
• Standard 85,000-ampere interrupting and short-time
capability at 480 volts
• 30-inch wide sections, Two-high stacking in 38-inch wide
sections
• Increased IC and short-time rating 100,000 amperes
(EGX-40) at 480 volts.
Fig. 3-11. EGS-32 circuit breaker (electrically operated)
EGS/EGX/EGF -50 Circuit Breaker
• 5000-ampere frame size, fan cooled
• Standard 85,000-ampere interrupting and short-time
capability at 480 volts
• One-high stacking, 38-inch wide sections
• Increased IC and short-time rating 100,000 amperes
(EGX-50) at 480 volts.”
3-7 Fuse Rollout Elements
When the system available short-circuit current exceeds the
unfused breaker ratings, current-limiting fuses can be used
in series with EGF-20, EGF-32, EGF-40, and EGF-50
breakers to increase the short-circuit rating of the
combination to 200,000 amps. When used, such fuses are
housed in a separate drawout compartment located adjacent
to the breaker compartment; they are mounted on a drawout
carriage similar to a breaker frame and referred to as a fuse
rollout element (FRE).
EGF-32 Rollout Carriage
• 3200-ampere rating
• 200,000-ampere interrupting rating
• Accepts 2000- through 4000-ampere fusing
• Also used for EGF-20 breaker
EGF-40 Rollout Carriage
• 4000-ampere frame size
• 200,000-ampere interrupting rating
• Accepts 2000- through 5000-ampere fusing
EGF-50 Rollout Carriage
• 5000-ampere frame size
• 200,000-ampere interrupting rating
• Accepts 2000- through 5000-ampere fusing
1. Protective hinged screen
2. Racking mechanism
3. Fuses
4. Secondary disconnects
Fig. 3-12. Fuse roll-out carriage