Description

The ABB TK802F is a specialized Power Supply Cable engineered specifically for use with ABB SD802F (5A) and SD812F (10A) power supply units within the AC 800F (Freelance) Distributed Control System. This pre-assembled cable harness provides a secure, low-resistance electrical path to deliver stable 24V DC power from the source terminal block to the power supply module inputs. Designed for high reliability, the TK802F features robust connectors that lock firmly into the SD802F/SD812F terminals, preventing accidental disconnection due to vibration. It supports both single and redundant power supply configurations, enabling seamless load sharing between parallel units. By using the genuine TK802F, system integrators ensure optimal voltage regulation, minimize wiring time, and eliminate the risks associated with manual field wiring, such as polarity reversals or loose connections.

Application Scenarios

During the commissioning of a new wastewater treatment plant using ABB AC 800F, the electrical panel builder encountered intermittent “Low Voltage” alarms on the controller rack. Investigation revealed that the manually wired power cables to the SD812F power supplies had high resistance due to poor crimping, causing a significant voltage drop under load. The project team replaced the custom wiring with genuine ABB TK802F cables. The factory-terminated connectors of the TK802F ensured a perfect, low-resistance connection. Immediately, the voltage at the module inputs stabilized at 24.1V, clearing all alarms. Furthermore, when configuring redundant power, the TK802F allowed for quick and error-free paralleling of two SD812F units, ensuring the system remained online even when one power supply was tested for failure.