Section 2 1MDU07212-YN Rev. C
REF601/REJ601 overview
12 REF601 / REJ601
Application Manual
Table 3: List of event types and related description
Sr.
No.
Event type Description Data considered
1 Power supply
presence
Unit ready contact activation will be stored as
an event. This unit ready contact is activated
when power supply is on and no internal
relay fault detected
Unit Ready
2 Trip circuit
supervision
When trip circuit becomes faulty, an event of
trip circuit faulty will be recorded. & when it
becomes health shall also record it as an
event
TCS fault ↑
TCS fault ↓
3 Setting
parameter
change
Settings (I>,I>>,I>>>,Io>,Io>> and
t>,t>>,t>>>,to>,to>>) alteration will be
captured as an event without setting value.
I>, I>>, I>>>, Io>,
Io>>, t>, t>>,t>>>,
to>, to>>
Circuit breaker failure protection settings -
IBF,I0BF,t Retrip,t Backup
Icbfp,I0cbfp,
t Retrip, t Backup
On change of Count value Count Value
Negative sequence setting change - I2> &
tI2>
I2>, tI2>
Phase discontinuity setting change - I2/I1> &
tI2/I1>
I2/I1>, tI2/I1>
Thermal protection setting change-
ϑ0,Ib, t↑, t↓s, t↓r, ϑalm, ϑtrip, ϑstrinhibit,
ϑEM
ϑ0,Ib, t↑, t↓s, t↓r,
ϑalm, ϑtrip,
ϑstrinhibit, ϑEM
Auto resclose function setting change -
Mode,CB Ready, Activate t Shot, Pulse tp,
cycle t1, cycle t2,cycle t3, cycle t4, Reclaim
tr, Block tb
O→I
Mode, CB
Ready, Activate t #
of Cycle, Pulse tp,
cycle t1, cycle t2,
cycle t3, cycle t4,
Reclaim tr, Block tb
4 Protection start Start event by I>,I>>, I>>> ,Io> OR Io>>will
be captured as individual event for both
rising & dropping
Start I> ↑
Start I>> ↑
Start I>>> ↑
Start I0> ↑
Start I0>> ↑
Start I> ↓
Start I>> ↓
Start I>>> ↓
Start I0> ↓
Start I0>> ↓
On I2> start both rising & falling signal Start I2> ↑
Start I2> ↓
On I2/I1> start both rising & falling signal Start I2/I1> ↑
Start I2/I1> ↓