Eaton Digitrip 3000 series - Page 48

Instruction Leaflet DT3000
Page 44 Effective: Date 07/02 I.B. 17555D
For more information visit: www.cutler-hammer.eaton.com
Supersedes I.B. 17555C dated November 1999
Figure 7-4a Inverse Time Overcurrent Phase, Flat Curves (SC-5393-92B)
DT 3100 & DT 3101 Users See Figure 7-4b
0.01
0.10
1.00
10.00
100.00
1000.00
0.1 1 10 100
Multiple of I
n
Value
Trip Time (seconds)
0.2 Seconds
2 Seconds
Minimum Pickup 0.2 Maximum Pickup 2.2
Adjustable Inverse Time Overcurrent Pickup
(x I
n
) (0.2……….2.2)
Adjustable Inverse Time Overcurrent Time Multiplier
(0.2 s……….2 s)
Tolerance: Inverse Time Overcurrent Pickup is ±5%
Inverse Time Overcurrent Time Multiplier is ±50 ms
and –50 ms