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
Figurt 24. Digiorip 520MC CLSI
Figurt 25. Digiorip 520MC CWLSIG
.4 .5
.6
.7
.8
.9
.95
1.0
t Response
* = I
2
Dependent on In
In = Max Amp Rating
(Current Sensor Rating)
Battery Check
Reset/Battery Test
Step
Unit Status
Catalog
2 4
7
10
12
15
20
24
Short
Delay
Setting
Short
Delay
Time
Long
Delay
Setting
Dependent on Ir
Ir = In 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
Figurt 26. Digiorip 520MC ARMLSI
Figurt 27. Digiorip 520MC ARMLSIG