Eaton Digitrip 3000 series Installation, Operation And Maintenance Instructions page 43

Figure 7-1b Inverse Time Overcurrent Phase, I
Minimum Pickup 0.2
10000.00
1000.00
100.00
10.00
1.00
0.10
0.01
0.1
DT3000
I.B. 17555D
For DT 3100 & DT 3101 Users ONLY
Maximum Pickup 1.0
Adjustable Inverse Time Overcurrent Pickup
(x I ) (0.2..........1.0)
n
Adjustable Inverse Time Overcurrent Time
Multiplier (Sec. @ 3 x I
Tolerance:
Inverse Time Overcurrent Pickup is ±5%
Long Delay Time Multiplier is ±10 or ±0.09 s
whichever is larger
Minimum Trip Time is 0.05 s
Note: Pickup of 0.2 x with Inverse Time
Overcurrent Time of 40 s @ 3 x makes T> 10000 s
40 Seconds at 3 per Unit
5 Seconds at 3 per Unit
0.2 Seconds at 3 per Unit
1
Multiple of In (I/I
For more information visit: www.cutler-hammer.eaton.com
Supersedes I.B. 17555C dated November 1999
Instruction Leaflet
Effective: Date 07/02
4
T Curves (SC-5390-92B)
) (0.2 s..........40 s)
n
10
)
n
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