Remote indication interface
Type RIS-FM

The remote indication system type RIS-FM is designed to transmit information from overhead line fault indicators type FLA4 either to a SCADA system or directly to users via Short Message Service (SMS). This makes the RIS-FM suitable both as an easily integrated component within a SCADA environment and as a lightweight, stand-alone solution.
The RIS-FM gathers data on:
- Faults
- Network events (current on/off, voltage on/off)
using short-range radio communication with the FLA4 fault indicators. It then forwards this data as human-readable SMS messages to up to five recipients.

Each message provides details about the type of event along with additional information, such as fault types, fault current levels, or the current network status. Furthermore, the RIS-FM can be configured to send periodic "heartbeat" SMS messages, which include the battery status and load current of each monitored overhead line fault indicator.

Configuration by remote control

The type RIS-FM can be fully configured using the remote control type HS2. The configuration of the SIM card PIN and the telephone numbers of the recipients is stored on an SD card and the remote control sends this data via short range radio to configure the RIS-FM. Additional parameters, such as the unique station ID or the heartbeat interval, can be conveniently adjusted on-site using the remote control. This eliminates the need for a computer during field operations.

Operation

In the event of a fault, the overhead line indicators type FLA4 transmit event data to the nearby RIS-FM remote indication system via their integrated short-range radio module as can be seen in below figure. Once the data has been received, the RIS-FM forwards the information as SMS messages to up to five recipients.
All overhead line indicators type FLA4 are equipped with short-range radio modules. This enables the RIS-FM to be installed together with new indicators or to be easily retrofitted to existing installations.

Installation and energy harvesting

The RIS-FM is installed directly onto the medium-voltage line within the range of the overhead line indicators. Mounting can be performed under live conditions with the aid of an adapter and hot stick. Once installed, the RIS-FM harvests energy directly from the line. The harvested energy is stored in internal supercapacitors, significantly reducing the load on the internal batteries and extending their service life.

Features and Benefits

Stand-alone remote indication system:
Easy to integrate, no additional hardware or server software required.

Bidirectional short range radio connection to fault indicators of the FLA4 and FLA3.1 product line

Configurable by remote control

Up to 5 recipients

Human-readable SMS messages

Transmitted information:
- Fault events (including event details like type of fault and fault current)
- Network events (current on/off, voltage on/off)

Configurable heartbeat SMS with battery status and load current of each monitored FLA4

Power supply:
- super-capacitors charged by energy harvesting from network
- 3 lithium battery (LiSOCl2) type A / 3.6V / 3600 mAh