accelerated zero sequence over-current
Adaptive Over-current Protection
backup over-current protection
calculation of over current protection
Complex voltage-started over current protection
directional over current
directional over current-based-protection
directional over-current protection
electronic over-current protector
instantaneous over current tripping
Inverse Time Over-current
inverse time over-current protector
low energy over-current relay
low-frequency over-current protection
moving coil type over-current relay
neutral over-current relay