General description

The TN 10 remote terminal unit is designed for the telecontrol of line disconnectors in medium-voltage distribution networks. Through its digital inputs and outputs and through its data interface, it is possible to remotely control the intelligent devices, electric-motor drive and other devices located at the line-disconnector site. It is adapted for direct connection to the GSM modem enabling data transmission through the public GSM network.

Technical data

• 8 digital inputs
• 4 digital outputs
• 2 interfaces (RS-232)
• software flash-memory of 128 kB
• 64 kB battery-backup memory for storing the data about individual events
• 32 kb static memory for storing the operating parameters
• real-time clock
• battery backup for the real-time clock and the static memory

Inputs and outputs are parametrised according to the required functions (alarms, status signalling, control) by means of a personal computer, connected to a data input. The other data input is intended for connection with an intelligent device, such as a fault-current indicator. The protocol for the communication with the intelligent device can be prepared optionally, according to the device's characteristics or the customer's specification. It is possible to upgrade the device by means of additional analog and digital inputs, digital outputs, communication interfaces etc..

The communication with the control centre is based on the DNP3.0 protocol, however, optionally also other protocols can be implemented, according to the customer's requirements/specifications. The signalling and control are possible also by means of SMS messages.