1.4.3 Functions, codes and symbols
All available functions are listed in the table. All of them may not be applicable to all
products.
Table 1: Functions included in the relays
Function IEC 61850 IEC 60617 ANSI
Protection
Three-phase non-di-
rectional overcurrent
protection, low stage
PHLPTOC1 3I> (1) 51P-1 (1)
PHLPTOC2 3I> (2) 51P-1 (2)
Three-phase non-di-
rectional overcurrent
protection, high
stage
PHHPTOC1 3I>> (1) 51P-2 (1)
PHHPTOC2 3I>> (2) 51P-2 (2)
Three-phase non-di-
rectional overcurrent
protection, instanta-
neous stage
PHIPTOC1 3I>>> (1) 50P/51P (1)
PHIPTOC2 3I>>> (2) 50P/51P (2)
Three-phase direc-
tional overcurrent
protection, low stage
DPHLPDOC1 3I> -> (1) 67-1 (1)
DPHLPDOC2 3I> -> (2) 67-1 (2)
Three-phase direc-
tional overcurrent
protection, high
stage
DPHHPDOC1 3I>> -> (1) 67-2 (1)
DPHHPDOC2 3I>> -> (2) 67-2 (2)
Three-phase voltage-
dependent overcur-
rent protection
PHPVOC1 3I(U)> (1) 51V (1)
PHPVOC2 3I(U)> (2) 51V (2)
Non-directional
earth-fault protec-
tion, low stage
EFLPTOC1 Io> (1) 51N-1 (1)
EFLPTOC2 Io> (2) 51N-1 (2)
Non-directional
earth-fault protec-
tion, high stage
EFHPTOC1 Io>> (1) 51N-2 (1)
EFHPTOC2 Io>> (2) 51N-2 (2)
Non-directional
earth-fault protec-
tion, instantaneous
stage
EFIPTOC1 Io>>> (1) 50N/51N (1)
Directional earth-
fault protection, low
stage
DEFLPDEF1 Io> -> (1) 67N-1 (1)
DEFLPDEF2 Io> -> (2) 67N-1 (2)
DEFLPDEF3 Io> -> (3) 67N-1 (3)
Directional earth-
fault protection, high
stage
DEFHPDEF1 Io>> -> (1) 67N-2 (1)
Table continues on the next page
Introduction 1MRS757644 H
26 620 series
Technical Manual