Eaton Digitrip 520 - Page 21

21
Instructional Leaflet IL70C1037H05
Effective October 2009
Digitrip models 520, 520i; and 520M, 520Mi,
520MC, 520MCi trip units for use only in
Magnum and Magnum DS circuit breakers
EATON CORPORATION www.eaton.com
Figure 24. Digitrip 520MC CLSI
Figure 25. Digitrip 520MC CWLSIG
.4
.5
.6
.7
.8
.9
.95
1.0
t Response
* = I
2
Dependent on I
n
I
n
= Max Amp Rating
(Current Sensor Rating)
Battery Check
Reset/Battery TestStep
Unit Status
Catalog
2
4
7
10
12
15
20
24
Short
Delay
Setting
Short
Delay
Time
Long
Delay
Setting
Dependent on I
r
I
r
= I
n
x Long Delay
Setting
Long
Delay
Time
Test
Kit
@ 6xI
r
PH4 Neutral
2
2.5
3
4
6
8
M1
10
.1*
.3*
.5*
.1
.2
.3
.4
.5
2
3
4
6
10
M1
OFF
Instantaneous
8
Transmit
Digitrip 520MC
High
Load
Alarm
Figure 26. Digitrip 520MC ARMLSI
Figure 27. Digitrip 520MC ARMLSIG