ABB REF615 L User Manual

GUID-A9898DB7-90A3-47F2-AEF9-45FF148CB679 V1 EN
Figure 456: Inverse curve C characteristic of overvoltage protection
11.3.1.2 User programmable inverse-time characteristics for overvoltage
protection
The user can define the curves by entering the parameters using the standard formula:
1YHT530004D05 D Section 11
General function block features
615 series 833
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