Phase-to-phase short-circuit protection, based on phase by phase comparison of the
currents on motor and generator windings.
Characteristics

• instantaneous tripping
• fixed high set point for fast tripping for violent faults, with no restraint
• percentage-based characteristic with fixed slope and adjustable low set point
• tripping restraint according to percentage characteristic activated by detection of:

*external fault or machine starting
*sensor saturation or disconnection
*transformer energizing (harmonic 2 restraint)

Released for:Schneider Electric Nigeria