Simplify the Splitter Box Using Dual-Cable Monitoring

The technical note provides information on using Littelfuse’s SE-134 and SE-134 C, a ground-wire monitor and ground-fault relay combination that is microprocessor based and used with resistance-grounded or solidly grounded systems, to reduce splitter box complexity and cost.

Protecting the two cables that are terminated with the SE-TA 12A series and SE-TA12B Termination Assembly only takes a single unit of the SE-134, SE-134C, or a more recent version.

Using a SE-TA 12A-series and SE-TA12B as a set creates the parallel combination that fulfills the 6-V Zener requirement of the SE-134 as a valid ground-check-loop termination.

For the purpose of energizing each cable independently, the splitter box must be equipped with live-end cover fitted with an SE-TA12A-series and another with an SE-TA12B.

An important note that can be reviewed with greater clarity in Littelfuse’s exact technical note, states that an SE-TA6A-series Termination Assembly cannot be used under any circumstances in the dual-termination application.

As cautionary reminder, be aware that the SE-134 and SE-134C are used to monitor a single cable terminated with an SE-TA6A-series Termination Assembly so it is inadvisable to use the SE-TA6A series for dual-termination applications because one cable will be left unmonitored.

Visit Littelfuse.com to learn more about the SE-134 and SE-134C. 
By Maximilian Teodorescu