Also available in presentation mode…
General description
LOK 30-GSM is a fault indicator for medium-voltage distribution lines, with in-built communication equipment for the remote signaling of detected faults. The alarm signal that the indicator generates after having detected a fault is transmitted in the form of SMS messages through the public GSM network to a predetermined subscriber/receiver.
The difference between the fault indicators LOK 30-GSM and LOK 20 is that in the former's casing besides fault-detection electronics also a communication control unit and a GSM module are built. The control unit communicates with the detection unit and with the GSM module, generates alarm messages and stores information about the faults detected (date, hour). The GSM module is an industrial modem for the transmission of data, messages, and speech through the GSM network.
Technical data
The communication control unit is microprocessor-based and contains:
- an 8-bit microcontroller
- 128 kB of software flash-memory
- up to 64 kB of battery-backup memory storing the data about the faults detected
- up to 32 kb of memory (EEPROM) for storing the operating parameters
- real-time clock
- an interface with 8 digital inputs and 4 digital outputs - optionally
- an RS-232 interface
All the components of the device are built into a common water-proof aluminium casing. On the outside, the casing looks the same as the one of LOK 20, except that there is a GSM antenna mounted on it. The indicator is powered by a battery, which is charged by solar cells.
