7
1
1
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1
1
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MaGnuM PRoDuct GuiDe
CA013002EN—April 2017 www.eaton.com
41
Magnum trip units and communication devices
Overview of Digitrip
TM
electronic trip units
Ever since introducing the first microprocessor-based trip unit,
Eaton has advanced the technology into a complete family of
Digitrip RMS trip units designed and engineered exclusively for
Magnum circuit breakers . Magnum circuit breakers can use any one
of the four models of Digitrip electronic trip units . Each trip unit is
microprocessor-based and a true rms sensing device:
For IEC applications, Digitrip 520i, Digitrip 520Mi, Digitrip
520MCi or Digitrip 1150i are to be ordered . These trip unit
model numbers carries a lower case “i” in the model
designation . This simply indicates that the trip unit complies with
IEC requirements in the area of ground fault (earth fault) pickup .
Ground fault pickup is limited to 1200A for UL rated devices .
This limitation does not apply to IEC rated devices .
The different models within the family provide for increasing
levels of protection and feature options for coordination,
information, diagnostics, and communications:
Digitrip 520
Digitrip 520M
Digitrip 520MC
Digitrip 1150+
Table 11 . Digitrip functionality – Summary of key features and capabilities
Functions
520
520M
520Mc
1150+
LSIG protection
Yes
Yes
Yes
Yes
Disable (I)
Yes
Yes
Yes
Yes
GF protection
Yes
Yes
Yes
Yes
GF alarm
No
Yes
No
Yes
Display
No
Yes
No
Yes
Programmable
No
No
No
Yes
Metering
No
Yes
No
Yes
Power and energy values
No
No
No
Yes
Power quality
No
No
No
Yes
Communication
No
No
No
Yes
Available control voltages are 24/48 Vdc, 125 Vdc, 120 Vac and 240 Vac .
One-line (four characters per line) LCD display .
Three-line (eight characters per line) LED display .
Phase, neutral, ground and high load current only .
1
2
3
4
1
4
4
2
2
3
1
1
