Eaton Digitrip RMS 310 - Page 10

10
Instruction Leaflet IL29C614F
Effective December 2011
Instructions for The Digitrip RMS 310 3-Pole and
4-Pole Trip Unit Installation and Operation with
K-Frame Series C Circuit Breakers
EATON CORPORATION www.eaton.com
Figure 12-1 Short Delay Trip Current Adjustment and
Curve Details.
Current I
n
Short Delay Pick-up
(Multiples of Rated Current I
n
)
Time
5
6
4
3
2
2
8
7
8
Figure 12-2 Short Delay Trip Current and Short Delay
Trip Time Adjustment and Curve Details.
Current I
n
Short Delay Pick-up
(Multiples of Rated Current)
Time
5
6
4
3
2
2
8
7
8
300
200
100
I
I
100
200
300
Figure 12-3 Ground Fault Trip Current, and Ground
Fault Trip Time Adjustments and Curve Details.
Ground Current I
G
Ground Fault Pick-up
Time
4 x I
G
5 x I
G
3 x I
G
2 x I
G
1 x I
G
500
300
150
I
Time ms
I
150
300
500
1x
5x
Figure 13 Optional Adjustable Ampere Setting Rating
Plug Used in Digitrip RMS 310 Trip Unit.
Rating Plug Setting (Amperes)
D
C
B
A
I
n
200A 250A
315A 400A
2x-8x
2x-8x
2x-8x 2x-8x
Current I
n
Time