ABB Relion REC615, Техническое руководство

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Name Type Values (Range) Unit Description
Angle U23B - IL1B FLOAT32 -180.00...180.00 deg Angle phase B to phase
C voltage - phase A cur-
rent (b)
Angle U31B - IL2B FLOAT32 -180.00...180.00 deg Angle phase C to phase
A voltage - phase B cur-
rent (b)
Angle U12B - IL3B FLOAT32 -180.00...180.00 deg Angle phase A to phase
B voltage - phase C cur-
rent (b)
3.9 Nonvolatile memory
The relay does not include any battery backup power. If the auxiliary power is lost,
critical information such as relay configuration and settings, events, disturbance
recordings and other critical data are saved to the relay’s nonvolatile memory. The
relay’s real-time clock keeps running via a 48-hour capacitor backup.
• Up to 1024 events are stored. The stored events are visible in LHMI, WHMI and
Event viewer tool in PCM600.
• Recorded data
- Fault records (up to 128)
- Maximum demands
• Circuit breaker condition monitoring
• Latched alarm and trip LEDs' statuses
• Trip circuit lockout
• Counter values
3.10 Sensor inputs for currents and voltages
This chapter gives short examples on how to define the correct parameters for
sensors.
Sensors have corrections factors, measured and verified by the sensor
manufacturer, to increase the measurement accuracy of primary values.
Correction factors are recommended to be set. Two types of correction
factors are available for voltage and rogowski sensors. The Amplitude
correction factor is named
Amplitude corr. A(B/C) and Angle correction
factor is named
Angle corr A(B/C). These correction factors can be found
on the Sensor's rating plate. If the correction factors are not available,
contact the sensor manufacturer for more information.
Rogowski sensor setting example
In this example, an 80 A/0.150 V at 50 Hz sensor is used and the application
has a 150 A nominal current (In). As the Rogowski sensor is linear and
does not saturate, the 80 A/0.150 V at 50 Hz sensor also works as a 150
A/0.28125 V at 50 Hz sensor. When defining another primary value for the
sensor, also the nominal voltage has to be redefined to maintain the same
transformation ratio. However, the setting in the protection relay ( Rated
1MRS758755 C Basic functions
REC615 & RER615
Technical Manual
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