General description

The SCB 10 is an efficient and reliable unit for fast isolation of a faulty part on a medium voltage (MV) distribution line. It operates either autonomously by automatic opening of the downstream line or in the connection with the control centre which is controlling the fault-isolation process. By using the SCB 10, duration of outages and number of unnecessary reclosings are drastically reduced. The results: decreased costs associated with unreliable network and increased service quality.

The complete sectionalizer consists of Control Box SCB 10, motorized MV line switch with current transformers and potential transformer for auxiliary supply of the equipment. 

Control box

• Fault current indicator KI 20 with surge arresters between the device and CT
• Power supply unit with AC/DC converter and sealed lead batter
• Surge arresters for supply voltage
• Wiring with fuses and relays