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Instructional Literature
Page 4
Effective: May 2005
Figure 2. Time Current Graph Showing Circuit Breaker Settings Before and After the Arcflash Reduction Maintenance Switch
Installation.
1000
100
10
1
After
Manufacturer *Eaton Cutler-Hammer
Manufacturer *CUTLER-HAMMER
Description Digitrip RMS 510-910
Description Digitrip RMS 510-910
Frame/Model 1600 A
Frame/Model 1600 A
Sensor/Trip 1600.0 A
Sensor/Trip 1600.0 A
Plug 1600.0 A
Plug 1600.0 A
Settings
Settings
0.10
Phase
Phase
LDPU 1 (1600A)
LDPU 1 (1600A)
LDT 7
LDT 7
SDPU 6 (9600A)
SDPU 6 (9600A)
SDT 0.2(I^2 T Out)
SDT 0.2(I^2 T Out)
Arcflash Reduction Maintenance
MAINT BYPASS 7.6 (12160A)
Switch 7.6 (12160A)
Total Running Load + Transient Load = 5.92 kA
0.01
0.5
1
10
Arcflash Reduction
Maintenance Switch
Retrofit
For more information visit: www.EatonElectrical.com
Arcflash Reduction Maintenance Switch
CURRENT IN AMPERES
Before
Manufacturer *Eaton Cutler-Hammer
Manufacturer *CUTLER-HAMMER
Description Digitrip RMS 510-910
Description Digitrip RMS 510-910
Frame/Model 1600 A
Frame/Model 1600 A
Sensor/Trip 1600.0 A
Sensor/Trip 1600.0 A
Plug 1600.0 A
Plug 1600.0 A
Settings
Settings
Phase
Phase
LDPU 1 (1600A)
LDPU 1 (1600A)
LDT 7
LDT 7
SDPU 6 (9600A)
SDPU 6 (9600A)
SDT 0.2(I^2 T Out)
SDT 0.2(I^2 T Out)
Arcing
ARCING
Fault
FAULT
Current
CURRENT
85% Level
85% LEVEL
= 16.98 kA
= 16.98 kA
100
1K
Ref. Voltage: 480 Current Scale x10^2
Application and Installation
10K
IL01906001E
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