ABB REG316 4 Series - Page 9

REG 316*4 1MRB520049-Uen / Rev. B ABB Switzerland Ltd
1-3
1.2. Application
The REG 316*4 numerical generator protection has been
designed for the high-speed discriminative protection of small
and medium size generators. It can be applied to units with or
without step-up transformer in power utility or industrial power
plants.
REG 316*4 places relatively low requirements on the perform-
ance of c.t’s and v.t’s and is independent of their characteristics.
1.3. Main features
REG 316*4’s library of protection functions includes the follow-
ing:
· generator differential (Diff-Gen)
· transformer differential (Diff-Transf )
· definite time over and undercurrent (Current-DT)
· provision for inrush blocking
· peak value overcurrent (Current-Inst)
· voltage-controlled overcurrent (Imax-Umin)
· inverse time overcurrent (Current-Inv)
· directional definite time overcurrent (DirCurrentDT)
protection
· directional inverse time overcurrent (DirCurrentInv)
protection
· definite time NPS (NPS-DT)
· inverse time NPS (NPS-Inv)
· definite time over and undervoltage (Voltage-DT)
· peak value overvoltage (Voltage-Inst)
· underimpedance (Underimped)
· underreactance (MinReactance)
· power protection (Power)
· stator overload (OLoad-Stator)
· rotor overload (OLoad-Rotor)
· frequency (Frequency)
· rate-of-change frequency protection (df/dt)
· overexcitation (Overexcitat)
· inverse time overexcitation (U/f-Inv)
· voltage comparison (Voltage-Bal)
· overtemperature (Overtemp)
· 100 % stator ground fault (Stator-EFP)
· 100 % rotor ground fault (Rotor-EFP)
· pole slipping (Pole-Slip)