in Downtime via Interlocking Date 3 rd March 2012 A tripping occurred since the Areva panels had a tripping command system if the DC supply failed This was removed by removing that function from the panel and a alarm using a contractor with a reset operation was ID: 308419
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Slide1
Reduction in Downtime via Interlocking
Date: 3rd March 2012
A tripping occurred since the Areva panels had a tripping command system if the DC supply failed.This was removed by removing that function from the panel and a alarm using a contractor with a reset operation was madeFor future purposes a downtime of 60 minutes was avoided.
1Slide2
How did the failure happen?
2Slide3
K1 (N.C.)
Push Button
(
N.O)
K2 (N.O
.)
a1
b1
g
h
K2
K1
MCB
Output
Fed by
UPS Power
Hooter
SLD of the Hooter Circuit
K1 (N.C.)
K2 (N.C.)
e
f
e1
f1
Fed by
UPS Power
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Load loss per hour
70,000
INRBreakdown on transmission line will create breakdown for hours:60
minutes
Total savings
70,000.00
INR
Savings Calculations
Now if the DC fails the Hooter will show the fault.
There is also a ‘Reset Button’ to accept the fault and bring it back to normal condition.
This is not a one time saving it is applicable for the future also.
Now Downtime of Unit 1, 2, 5 and
Gyaanpeeth
from DC failure can be avoided.
Hooter would run and action can be taken in time.
*
This is not a one time saving. For future there will be no downtime due to this reason.
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