IEC 61850 / Function
block name
ANSI
Function description
NS2PTOC
46I2
Negative-sequence time overcurrent protection for machines
VR2PVOC
51V
Voltage-restrained time overcurrent protection
Voltage protection
UV2PTUV
27
Two-step undervoltage protection
OV2PTOV
59
Two-step overvoltage protection
ROV2PTOV
59N
Two-step residual overvoltage protection
OEXPVPH
24
Overexcitation protection
LOVPTUV
27
Loss-of-voltage check
STEFPHIZ
64
100% Stator ground fault protection, 3rd harmonic based
Frequency protection
SAPTUF
81
Underfrequency function
SAPTOF
81
Overfrequency function
SAPFRC
81
Rate-of-change frequency protection
Table 3:
Control and monitoring functions
IEC 61850 / Function
block name
ANSI
Function description
Control
SESRSYN
25
Synchrocheck, energizing check and synchronizing
SMBRREC
79
Autorecloser
STBRREC
79
Autorecloser
SCILO
3
Logical node for interlocking
BB_ES
3
Interlocking for busbar grounding switch
A1A2_BS
3
Interlocking for bus-section breaker
A1A2_DC
3
Interlocking for bus-section disconnector
ABC_BC
3
Interlocking for bus-coupler bay
BH_CONN
3
Interlocking for 1 1/2 breaker diameter
BH_LINE_A
3
Interlocking for 1 1/2 breaker diameter
BH_LINE_B
3
Interlocking for 1 1/2 breaker diameter
DB_BUS_A
3
Interlocking for double CB bay
DB_BUS_B
3
Interlocking for double CB bay
DB_LINE
3
Interlocking for double CB bay
ABC_LINE
3
Interlocking for line bay
AB_TRAFO
3
Interlocking for transformer bay
Table continues on next page
Section 1
1MRK 511 245-UUS -
Introduction
12
650 series ANSI
Engineering Manual