AN 2 & 3 ETAP DATA
1. AN2&3(ETAP data for Filter)
For AN-2&3, The configuration for 13.8KV banks is (ungrounded& single star) and the configuration for
34.5KV banks is (ungrounded& double star).
Design in ETAP:



Capcitor only
Total Filter [total C + Total L]
Filter for each step
Diffrence between effective(required KVAR) & Installed KVAR:
SN
1
2
3
4
5
6
7
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BANKS
Total SF2, M-SG201-A/B(13.8 KV)
Total SF3, 2M-SG201-A/B(34.5 KV)
STEP1-SF2, M-SG201-A/B(13.8 KV)
STEP2-SF2, M-SG201-A/B(13.8 KV)
STEP3-SF2, M-SG201-A/B(13.8 KV)
STEP1-SF3, 2M-SG201-A/B(34.5 KV)
STEP2-SF3, 2M-SG201-A/B(34.5 KV)
KVAR effective
KVAR installed
2450
2450
350
700
1400
1000
1400
3063
3144
438(3PH×146)
876(3PH×292)
1749(3PH×583)
1284(3PH×(4×107))
1860(3PH×(4×155))
AN 2 & 3 ETAP DATA
2. ETAP Input patameter defenations
SN
1
2
3
4
Parameter
Filter type
KVAR
μF
Rated KV
5
6
7
Max. KV
XL1
Q Factor
8
Max. I
Defenation
Single tuned,(A filter type that has a single tuned frequency point.)
This is 1-phase kvar for capacitor C1.
Capacitance of the capacitor
This is rated kV in rms for capacitors C1. It is rated voltage for the capacitor. the
rated kV for Wye connection to be entered should be VL-L/√3 (or if Delta connection
then VL-L) Vendor provide this value and it is depend on the R.M.S
voltage(fundamental + Harmonic) and the raised voltage.
This is maximum kV in rms for capacitor C1.it is equal 1.1 × Rated KV
This is XL1 in ohms for inductor L1.
This is the Q factor (XL1/RL1) for inductor L1.when the Q=100, then the RL1(real
resistance of the reactor and it is different that the etxternal resistor for RLC filter to
do damping)=0.01 × XL1
This is the maximum I in rms(fundamental + Harmonic ) for inductor L1.you can
assume it equal 1.25×I1 if ungrounded capacitor bank and equal 1.35×I1 if grounded
capacitor bank.the Max.I differ from the rating current for the reactor which
provided by the Vendor, because the vendor will apply marginal factor for the
design(estimated Ir.m.s × 1.25), and also estimate the harmonic level, for example if
the fundamental current(I1) = 100 A, then to apply maximum consideration for the
harmonic, you can estimate that the fifth Harmonic current equal 100A(or 0.5I1 or at
least 0.35I1), so the Ir.m.s=141.42, then apply the 1.5 margin then the reactor rating
current=212 A, but the Ir.m.s to be entered in ETAP= 125A, for the protection
purpose.
3. SF2, M-SG201-A/B(13.8 KV)
Outdoor metal enclosed capacitor bank operated (350+700+1400)kvar at 13.8kV L-L, 60 Hz, in
ungrounded, single wye connection. Each phase of each step is arranged with 1 series groups of 1 parallel
connected capacitor units.
Multiple units ungrounded single Wye
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AN 2 & 3 ETAP DATA
Table-1 Total filter [2450 KVAR & 13.8 KV SCB at AN-2&3] & ungrounded & Single Wye
Capacitor C1
KVAR
μF
RATED KV
MAX. KV
Inductor L1
1020
32.280
9.155
10.0705
XL1
Q Factor
MAX I
4.44
100
128 (R.M.S Current)
Table-2 Step-1 [350 KVAR & 13.8 KV SCB at AN-2&3] & ungrounded & Single Wye
Capacitor C1
KVAR
μF
RATED KV
MAX. KV
Inductor L1
146
4.610
9.155
10.0705
XL1
Q Factor
MAX I
31.06
100
18 (R.M.S Current)
Table-3 Step-2 [700 KVAR & 13.8 KV SCB at AN-2&3] & ungrounded & Single Wye
Capacitor C1
KVAR
μF
RATED KV
MAX. KV
Inductor L1
292
9.22
9.155
10.0705
XL1
Q Factor
MAX I
15.532
100
36 (R.M.S Current)
Table-4 Step-3 [1400 KVAR & 13.8 KV SCB at AN-2&3] & ungrounded & Single Wye
Capacitor C1
KVAR
μF
RATED KV
MAX. KV
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Inductor L1
583
18.45
9.155
10.0705
XL1
Q Factor
MAX I
7.766
100
73 (R.M.S Current)
AN 2 & 3 ETAP DATA
4. SF3, 2M-SG201-A/B(34.5 KV)
Outdoor metal enclosed capacitor bank operated 2450 (1000+1450)kVar at 34.5kV L-L, 60 Hz, in
ungrounded, double wye connection.
Multiple units ungrounded double Wye
Table-5 Total filter [2450 KVAR & 34.5 KV SCB at AN-2&3] & ungrounded & Double Wye
KVAR
μF
RATED KV
MAX. KV
Capacitor C1
CHECK
OR
1048
262
5.16
5.16
23.194
11.597
25.5134
12.7567
Inductor L1
XL1
Q Factor
MAX I
27.78
100
51 (R.M.S Current)
Table-6 Step-1 filter [1000 KVAR & 34.5 KV SCB at AN-2&3] & ungrounded & Double Wye
KVAR
μF
RATED KV
MAX. KV
Capacitor C1
CHECK
OR
428
107
2.11
2.11
23.194
11.597
25.5134
12.7567
Inductor L1
XL1
Q Factor
MAX I
67.971
100
21 (R.M.S Current)
Table-7 Step-2 filter [1450 KVAR & 34.5 KV SCB at AN-2&3] & ungrounded & Double Wye
KVAR
μF
RATED KV
MAX. KV
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Capacitor C1
CHECK
OR
620
155
3.06
3.06
23.194
11.597
25.5134
12.7567
Inductor L1
XL1
Q Factor
MAX I
46.9354
100
30 (R.M.S Current)