ABB REF615 J User Manual

GUID-B55D0F5F-9265-4D9A-A7C0-E274AA3A6BB1 V1 EN
Figure 458: Inverse curve B characteristic of undervoltage protection
11.3.2.2 User-programmable inverse-time characteristics for undervoltage
protection
The user can define curves by entering parameters into the standard formula:
1YHT530004D05 D Section 11
General function block features
615 series 837
Technical Manual

ABB REF615 J Specifications

General

Type	Feeder Protection Relay
Nominal Frequency	50/60 Hz
Rated Current	1 A / 5 A
Binary Outputs	Up to 8
Communication Protocols	IEC 61850, Modbus, DNP3
Mounting	Flush mounting
Protection Functions	Overcurrent, Earth fault, Under/Over voltage
Operating Temperature	-25°C to +55°C
Ingress Protection	IP54
Weight	Approximately 1.5 kg