ABB REF 542plus Installation Manual

A051090
Fig. 3.2.-1 Trusted sites selection in the Internet browser
A further setting required for user authentication services is the enable setting
for proxy connections, See Fig. 3.2.-2. It can be found in the Internet
Options; Advanced. Browse to HTTP1.1 settings and enable Use HTTP 1.1
through proxy connections.
12
REF 542plus
Multifunctional Protection and Switchbay
Control Unit
Installation Manual for Web Interface
Installation manual
1MRS755865

ABB REF 542plus Specifications

General

Category	Control Unit
Frequency	50/60 Hz
Display	LCD
Communication Protocols	IEC 61850, Modbus, DNP3
Inputs	Digital and Analog
Outputs	Relay Outputs
Power Supply	24-48 V DC / 100-240 V AC
Protection Functions	Overcurrent, Earth Fault
Protection Degree	IP20
Storage Temperature	-40°C to +70°C
Humidity	5 to 95 % non-condensing