ABB REF615 L User Manual

A070443 V3 EN
Figure 140: Extended operation area in directional earth-fault protection
4.2.2.6 Measurement modes
The function operates on three alternative measurement modes: "RMS", "DFT" and
"Peak-to-Peak". The measurement mode is selected with the Measurement mode
setting.
Table 291: Measurement modes supported by DEFxPDEF stages
Measurement mode
Supported measurement modes
DEFLPDEF DEFHPDEF
RMS x x
DFT x x
Peak-to-Peak x x
For a detailed description of the measurement modes, see the
Measurement modes section in this manual.
1YHT530004D05 D Section 4
Protection functions
615 series 285
Technical Manual

ABB REF615 L Specifications

General

Type	Feeder Protection Relay
Rated Frequency	50/60 Hz
Weight	Approx. 1.5 kg
Communication Protocols	IEC 61850, Modbus RTU, DNP3
Protection Functions	Overcurrent, Earth fault, Thermal overload, Under/Over voltage, Under/Over frequency
Enclosure	IP20