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TRF It A LV 1ph FLT

This document contains information about fault protection settings for a distribution system. It includes the details of a 58.55kA line-to-ground fault at 0.415kV, and settings for the ground overcurrent protection devices including two circuit breakers and a relay. It also lists the device models, sensor types and pickup thresholds used for the ground fault protection scheme.

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PRADEEP T K
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22 views1 page

TRF It A LV 1ph FLT

This document contains information about fault protection settings for a distribution system. It includes the details of a 58.55kA line-to-ground fault at 0.415kV, and settings for the ground overcurrent protection devices including two circuit breakers and a relay. It also lists the device models, sensor types and pickup thresholds used for the ground fault protection scheme.

Uploaded by

PRADEEP T K
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Per Unit

.005 .01 .03 .05 .1 .3 .5 1 3 5 10 30 50 100


1K Normalized (shifted) TCC 1K
Line-to-Ground (Sym) fault: 58.55kA @ 0.415kV
Adj Bus: MDB IT A
500 500
Connector: MDB IT A 0G ACB - Lump4
SQOP File: Untitled
300 Data Rev: Base 300

Configuration: Normal
Date: 10-16-2020

100
MDB IT A IC 100
Square-D MICROLOGIC 6.0
Sensor = 4000
50
Ground Pickup = B (640 Amps) 50
Ground Band = 0.2 (I^x)t = OUT
TFR IT A SBEF RELAY - G
58.55 kA @ 0.415 kV OC1
30 30
t1: 0.14 s, t2: 0.2 s
AREVA
P122
CT Ratio 3000:1
Definite Time
10 Pickup = 0.25 (0.002 - 1 xCT Sec) 10
Time Dial = 0.35
MDB IT A 0G ACB 3x = 0.35 s, 5x = 0.35 s, 8x = 0.35 s
5 Square-D MICROLOGIC 6.0 58.55 kA @ 0.415 kV 5

Seconds
Seconds

Sensor = 3200 t1: 0.35 s


3 Ground Pickup = A (500 Amps) 3
Ground Band = 0.1 (I^x)t = OUT
58.55 kA @ 0.415 kV
t1: 0.08 s, t2: 0.14 s

1 1

.5 .5

.3 .3

.1 .1

MDB IT A TFR
IC IT A SBEF RELAY
R
.05 .05
4000 A
.03 .03

100 kA
MDB IT A 0G ACB

.01 3200 A .01


.005 .01 .03 .05 .1 .3 .5 1 3 5 10 30 50 100
150 kA
Per Unit ETAP Star 18.1.1C

Project: EITC data centre Date: 10-16-2020


Location: SAHAMA SN: POWERSYS_1
Contract: Rev: Base
Engineer: AWAIS Fault: Ground(Normalized)
Filename: C:\ETAP 1811\FRIEBERG\EITC data centre.OTI

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