ABB
3
Feeder Protection and Control
REF615
Product version: 2.0
1MRS756379 D
Issued: December 2007
Revision: D / 03 Mar 2009
1. Description
REF615, member of ABB’s 615 product
series, is a dedicated feeder protection IED
designed for the protection, measurement
and supervision of utility substations and
industrial power systems. Re-engineered from
the ground up, the IED has been guided by
the IEC 61850 standard for communication
and interoperability of substation automation
devices.
The IED provides main protection for over-
head lines and cable feeders in distribution
networks. The IED is also used as back-up
protection in applications, where an inde-
pendent and redundant protection system is
required.
Depending on the preconfiguration made,
the IED is adapted for the protection of
overhead line and cable feeders in isolated
neutral, resistance earthed, compensated and
solidly earthed networks. Once the standard
configuration IED has been given the appli-
cation-specific settings, it can directly be put
into service.
The 615 series IEDs support a range of com-
munication protocols including IEC 61850
with GOOSE messaging, IEC 60870-5-103,
Modbus
®
and DNP3.
2. Standard
configurations
The feeder protection IED REF615 is available
with six alternative standard configurations.
The table below indicates the functions sup-
ported by the different IED configurations.
Table 2. Supported functions
Functionality
A
B
C
D
E
F
Protection
Three-phase non-directional overcurrent,
low-set stage
•
•
•
•
•
-
Three-phase non-directional overcurrent,
high-set stage, instance 1
•
•
•
•
•
-
Three-phase non-directional overcurrent,
high-set stage, instance 2
•
•
•
•
•
-
Three-phase non-directional overcurrent,
instantaneous stage
•
•
•
•
•
•
Three-phase directional overcurrent,
low-set stage, instance 1
-
-
-
-
-
•
Three-phase directional overcurrent,
low-set stage, instance 2
-
-
-
-
-
•
Three-phase directional overcurrent,
high-set stage
-
-
-
-
-
•
Table 1. Standard configurations
Description
Std. conf.
Non-directional overcurrent and directional earth-fault protection
A and B
Non-directional overcurrent and non-directional earth-fault protection
C and D
Non-directional overcurrent and directional earth-fault protection with
phase-voltage based measurements
E
Directional overcurrent and earth-fault protection with phase-voltage based
measurements, undervoltage and overvoltage protection
F
Summary of Contents for relion REF615
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