ABB RET615 Product Manual page 4
Relion 615 series.
transformer protection and control
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- Manual (100 pages) ,
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- Product manual (64 pages)
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Transformer Protection and Control
RET615
Product version: 2.0
Table 2. Supported functions
Functionality
1)
Protection
Stabilized and instantaneous differential protection for two-
winding transformers
Numerical stabilized low impedance restricted earth-fault
protection
High impedance based restricted earth-fault protection
Master Trip, instance 1
Master Trip, instance 2
HV-side protection
Three-phase non-directional overcurrent protection, low
stage, instance 1
Three-phase non-directional overcurrent protection, high
stage, instance 1
Three-phase non-directional overcurrent protection,
instantaneous stage, instance 1
Non-directional earth-fault protection, low stage, instance 1
Non-directional earth-fault protection, high stage, instance 1
Negative-sequence overcurrent protection, instance 1
Three-phase thermal overload protection for power
transformers, two time constants
Circuit breaker failure protection
LV-side protection
Three-phase non-directional overcurrent protection, low
stage, instance 2
Three-phase non-directional overcurrent protection, high
stage, instance 2
Three-phase non-directional overcurrent protection,
instantaneous stage, instance 2
Non-directional earth-fault protection, low stage, instance 2
Non-directional earth-fault protection, high stage, instance 2
Negative-sequence overcurrent protection, instance 2
Arc protection, instance 1
Arc protection, instance 2
4
1MRS756891 B
Issued: 01.10.2009
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ABB
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