 Distance protection
with five impedance measuring zone (ANSI 21, 21N)
longitudinal
differential protection (LDF ***) with second/fifth harmonic (ANSI
87L)
Four stages
earth fault protection (ANSI 50N, 51N, 67N)
Autoreclosing (ANSI 79, 25)
Fault
locator (ANSI 21FL)
Weak infeed end logics
Start blocking
function
Fuse-failure
supervision function with or without time delay for blocking command
generation (ANSI 21FL)
Power swing
blocking function
Breaker failure
protection function (ANSI 50BF)
Current circuits
supervision function (ANSI 52)
Broken primary
conductor supervision function (ANSI 52)
16 selectable
setting groups
Analogue inputs:
- current: 5 pcs. (RLI 401D, RLI 401i), 4 pcs. (RLI 401)
- voltage: 5 pcs.
Binary inputs:
16 pcs.
Binary outputs:
9 pcs.
Interfaces
(connection to SCADA):
- RS 485 electrical (integrated): RLI 401, RLI 401i
- Interface module (Ethernet/Optical/Electrical): RLI 401D
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