Circuit Breaker Failure Protection (Cbfp); Connections - Eaton EAFR-101S User Manual

The current monitoring signal in this application is coming
from an external over-current relay through the binary input
channel BI3. The position of the breaker can be manually
connected with either the main busbar or reserve busbar.
For indicating the precise breaker location, its position infor-
mation is sent to EAFR-101S via the binary input channel
BI1 (main busbar) or BI2 (reserve busbar).
The trip contact T1 is responsible for tripping the breaker.
The trip contact T3 gives trip alarm information synchronic-
ally.
The connection of this example application is also shown in
Section 8: Wiring Diagram.

6.2 Circuit Breaker Failure Protection (CBFP)

The EAFR-101S includes a selective circuit breaker failure
function that can be enabled by the dipswitch settings (see
Section 3.5: Dipswitch Settings). When enabled, the break-
er failure function activates when the tripped breaker fails
to operate. The breaker failure function is activated if the
EAFR-101S detects the presence of light after a set operat-
ing time. When the EAFR-101S is set to operate on light
and current, both parameters must persist to activate CBFP .
Breaker failure can be set to operate either on 100 ms or
150 ms delay (see Section 3.5: Dipswitch Settings).
EAFR-101S Arc Point Sensor Relay User Manual MN026005EN February 2016 www.eaton.com

7. Connections

Figure 17. EAFR-101S Terminals at the Rear Plate.
X2
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
S2/S3/S4 Chan
S1 Channel
T1 / T2 Latch
CBFP Time
Config.
Select
L = Light
C = Current
N L = Non Latch
7. Connections
X1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
ON OFF
L L+C
L L+C
N L
100 150
SW1
19