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MaGnuM PRoDuct GuiDe
CA013002EN—April 2017 www.eaton.com
48
Magnum trip units and communication devices
Additional modules for Digitrip 1150 trip units
•
Power relay module:
Provides a power supply to
power the Digitrip 1150+
trip unit’s 24 Character LED
display and communications
functions . The Power Relay
Module also provides
(3) programmable relay
contacts for interface with
external equipment . The
power relay module requires
an external customer
supplied voltage source .
Programmable Relay
Contacts via the Digitrip
1150+ trip unit trip and alarm
programming menus:
•
Contact A - Pulse Initiator
or Alarm and Trip output
relay
•
Contact B - Alarm and
Trip output relay . ARMS
remote indication
•
Contact C - Latching type
Alarm and Trip output relay
that holds status upon
loss of auxiliary power .
Alarm Contact Ratings
(resistive load):
•
0 .5 Amp at 230 Vac
•
1 .0 Amp at 120 Vac
•
1 .0 Amp at 24-48 Vdc
•
Potential Transformer
Module (PTM):
The PTM module provides
system line voltage
information to the Digitrip
1150+ trip unit . It provides
signal data to calculate:
•
Voltage
•
Power
•
Energy
•
Related Data
The PTM is internally
hard wired in the breaker,
normally to the line side
breaker terminals, except for
a reverse feed configuration .
A white disconnecting plug
is provided to disconnect
the PT Module circuit from
the line voltage during
dielectric testing .
•
Accessory bus:
The accessory bus feature
on the Digitrip 1150+
permits the application
of additional discrete
programmable relay
contacts by using one or
more Digital Relay Modules .
The accessory bus is
connected to secondary
terminals A17 and A18 for
external connections to
the Digital Relay
Modules via twisted pair
communications cable .
•
Digital relay module:
Digital relay modules are
mounted by DIN Rail,
separate from the circuit
breaker . Up to 4 Digital
Relay Modules (addresses
001 to 004) can be applied
per circuit breaker . Each
Digital Relay Module has
relays with form C contacts
rated at 10 amps maximum
at 250 Vdc . A control voltage
source of 120 Vac ±20% or
38-125 Vdc is required to
power each unit .
The Digitrip 1150+ trip unit
can be programmed to
change state of the Digital
Relay Module relay contacts
for any combination of the
following:
•
Auxiliary Switch
•
Bell Alarm
•
Long Delay Trip
•
Short Delay Trip
•
Instantaneous Trip
•
Ground Fault Trip
•
Ground Fault Alarm
•
High Load Alarm
•
Deadman
•
Watchdog
•
Arc-flash Reduction
Maintenance System
(ARMS) status indication
•
Communication systems
and protocols:
Communication to a host
computer or a Breaker
Interface Module (BIM)
is possible with both the
Digitrip 520MC and Digitrip
1150+ trip units . Network
command and control
communications is achieved
with translators to common
protocols, such as Modbus
®
INCOM
TM
and Profibus
®
and
Ethernet . External power
must be supplied to the
breaker .
Trip unit data is
communicated using
the appropriate protocol
and interface . Modules
catalog numbers PMINT
and MMINT are compact
devices that support
common interfaces, and
are DIN rail mounting .
They output all information
available in the trip unit to
the field bus including:
•
Status
•
Current
•
Voltage
•
Power
•
Energy
•
Diagnostic information
(such as overcurrent,
phase asymmetry and
overvoltage)
Power relay module
