SRMU Functionality Smart Ring Main Units (RMUs) incorporate advanced technologies
to enhance the monitoring, control, and management of
distribution networks.
Protection Relay
LV Compartment
SF6 Gas Indicator
L/R Selector Switch
ON & Off Push Buttons
MV Compartment
Earth Fault Indicator
Battery
AC/DC supply and battery charger
RTU with integrated modem and antenna
Cable test compartment
Product features
Control and Measuring Function
GIS ELA SF6 ring switchgear is equipped with an integrated Remote Terminal Unit (RTU) for remote monitoring and control via the control center.
The local RTU is connected to the control center, providing status information from RTU to the data center.
Status Information from RTU to Data Center
• Close/Open status for each CB/LBS.
• Earth status for each circuit.
• Lock/Unlock status for each circuit.
• Selector switch status (local/remote).
• SF6 Gas pressure (low/normal).
• Power supply status.
• Door open/close status.
Analog Measurements
• Phase voltages (A, B, C).
•Phase currents (A, B, C).
• Frequency.
• Total active power [kW].
• Total reactive power [kVAR].
• Total apparent power [kVA].
RTU
• The RTU is a remote configuration device that collects and encodes data into a transmittable format, sending it back to the central or master station.
• It collects information from the master device, implements processes directed by the master, and is equipped with sensors, measurement outputs, inputs, alarms, and communication ports.
