In order to identify the running defects of the switching devices early and avoid
major losses caused by accidents, Ruitong Electrical and Xi'an Jiaotong University
jointly developed and designed the online Monitoring Device for Switching Electrical
Equipment (RT-OMD/SD), which is mainly composed of the special sensor , signal
transmission and processing unit, communication network and background software.
The special sensor monitors the temperature, mechanical characteristics and insulation
status, and converts physical signals into electrical signals; the signal transmission and
processing unit receives the transmitted electrical signals and transmits them to the
background through the communication network; after receiving the signals, the
background software conducts fault diagnosis and life prediction to the switching
devices with fault diagnosis expert system.
Main Technical Parameters:
Product Models:
The online monitoring device for switching electrical equipment (RT-OMD/SD)
adopts the cordwood structure, so that users may select different monitoring objects
and monitoring channels as needed.
Remarks: Users may select different monitoring objects and monitoring channels as needed
Monitoring Board Name Main Technical Parameters
Monitoring Circuit Board for
Infrared Temperature Rise
Simultaneously monitors the temperature rise of the 6-channel busbar
and the 1-channel ambient temperature and humidity; accuracy: 3K.
Monitoring Circuit Board for
Mechanical Characteristics
Monitors the closing coil current (3 channels), the displacement curve (1 channel),
the energy storage motor voltage and current curve (2 channels), and the status
information of switching on, switching off and energy storage.
Monitoring Circuit Board for
Insulated Status (Leakage Current)
It can monitor 6 leakage currents at the same time;
Accuracy: 5uA
Product Models:
The online monitoring device for switching electrical equipment (RT-OMD/SD) adopts the cordwood structure, so that users may select different monitoring objects and monitoring channels as needed.
Remarks: Users may select different monitoring objects and monitoring channels as needed.
Category Type Monitoring Objects Basic Functions
Basic Type RT-OMD/SD-T Temperature Temperature monitoring function
Enhanced A Type RT-OMD/SD-TM Temperature and mechanical properties
Temperature monitoring function; mechanical property monitoring function
Enhanced B Type RT-OMD/SD-TI Temperature and insulation status
Temperature monitoring function; insulation status monitoring function
Full-featured Type RT-OMD/SD-TMI Temperature,mechanical properties,
insulation status
Temperature monitoring function; mechanical property
monitoring function; insulation status monitoring function
