Product Description:
The SA-1 relay is a three-phase high-speed relay
used for differential protection of ac generator and
motors. With proper selection of current transformers,
the relay is unaffected by dc transients associated
with asymmetrical through short circuit conditions.
The restraint circuit of each phase consists of a center-tapped transformer, a resistor, and a full-wave
rectifier bridge. The outputs of all the rectifiers are
connected in parallel. The parallel connection of rectifiers is a maximum voltage network. Hence, the
voltage applied to the filter circuit is proportional to
the phase current with the largest magnitude.
Welcome to contact the sales manager:
Sales manager : John Yang
Mobile / WhatsApp : +86 18150117685
Email: sales3@askplc.com
Skype : sales3@askplc.com
