2
3. Features
Eaton Arc Flash Relay System
MN026010EN March 2016 www.eaton.com
3.5 Indication
●
●
Power available LED
●
●
System health LED
●
●
Trip relay activation LED’s
●
●
Sensor channel activation LED’s
●
●
Overcurrent element pickup LED’s
3.6 Self Monitoring
Complete system self monitoring provides the highest
level of dependability by continuously monitoring all internal
system functions along with external connections between
modules, light sensors or loops and current transformers.
3.7 Breaker Failure
The circuit breaker failure protection (CBFP) is initiated
when a light signal and second trip criteria signal (e.g. over-
current), if applicable, is active for above the set CBFP time
of either 100 or 150 ms. The trip relay T2 and binary output
BO1 will operate after the set time delay.
3.8 Communications
Because of the simplicity of the system, all monitoring is
done through contact outputs on the modules. The advan-
tage of this approach is that cybersecurity issues are non-
existent.
3.9 Configuration
Easy configuration and setup with 4 dip switches to select
one of many different standard sensor channel configura-
tions for Light or Light & Current tripping.
Figure 1. Double Ended Substation Using Point Sensors.
EAFR-110P
EAFR-110P
ERROR
POWER
SET
T1
T2
S1
IL1
S2
IL2
S3
IL3
S4
Ig
S5
BI1
BI2
HSO1
BO1
HSO2
T3
T4
Eaton Arc Flash Relay
EAFR-110P
EAFR-110P
ERROR
POWER
SET
T1
T2
S1
IL1
S2
IL2
S3
IL3
S4
Ig
S5
BI1
BI2
HSO1
BO1
HSO2
T3
T4
Eaton Arc Flash Relay
EAFR-101
EAFR-101
ERROR
T1,T3,T4
T2,T4
POWER
SET
S1
S2
S3
S4
S5
BI1
BI2
BO1
Eaton Arc Flash Relay
EAFR-101
EAFR-101
ERROR
T1,T3,T4
T2,T4
POWER
SET
S1
S2
S3
S4
S5
BI1
BI2
BO1
Eaton Arc Flash Relay
CS:2,A
CS:2,A
CS:0
CS:0
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
CB
