Wind Power Application Example (Light Only Condition) - Eaton EAFR-101 User Manual

6.2 Wind Power Application Example (Light Only
Condition)
The EAFR-101 may be applied using arc light only as the
tripping criteria.
The example in Figure 20 shows a typical wind power
scheme where a permanent magnet synchronous genera-
tor (PMSG) is applied with a converter cabinet and LV/MV
transformer.
The EAFR-101 is equipped with four point sensor chan-
nels and each channel may have up to three sensors (type
EAFR01) connected in series allowing for up to 12 point sen-
Figure 20. Typical Wind Power Applications by EAFR-101 and EAFR-101D.
T3
S5
S1
T1
Eaton Arc Flash Relay
POWER
ERROR
T1,T3,T4
T2,T4
S1
S2
S3
S4
S5
S2
BI1
BI2
BO1
SET
T2
EAFR-101
S3
T4
EAFR-101 Arc Point Sensor Relay User Manual MN026004EN February 2016 www.eaton.com
sors. In this application, three sensor channels with three
sensors in each channel are utilized. In the event of arc light
in any of the compartments containing a sensor, the EAFR-
101 relay will execute a trip to all three circuit breakers in
7 ms thus clearing the arc fault in total time of 7 ms + CB
opening time. Additionally, an electronic lock-out relay (T3)
is utilized to provide the lock-out function ensuring the fault
is recognized and corrected prior to putting the generator
back into service (safety loop).
G
CB
6. Application Examples
CB
CB
13