CP SB1

CP SB1 is a switchbox accessory designed to work with CPC 100 and TESTRANO 600 for automated tap changer and transformer testing. It eliminates the need for manual reconnection during multi-tap or multi-winding testing, greatly improving speed and operator safety. The device automatically switches between test leads under PTM control, allowing seamless execution of winding resistance, ratio, and short-circuit tests. CP SB1’s robust design ensures reliable operation in demanding substation conditions. With its ability to streamline complex testing sequences, CP SB1 enhances productivity for field crews while maintaining high measurement accuracy.

Key Features

• Automated lead switching

• Speeds up transformer testing

• Safe, hands-free operation

• Fully integrated with PTM

• Rugged field-ready hardware

Applications

• Power transformer testing

• OLTC testing sequences

• Multi-winding resistance measurement

• Ratio and vector group verification

Keywords

CP SB1, transformer test switchbox, automated switching unit, CPC accessory, TESTRANO accessory