Amps X 100 MILLBROOK PS HV SWBD (Nom. kV=3.3, Plot Ref. kV=3.

3)
.5 1 3 5 10 30 50 100 300 500 1K 3K 5K 10K
1K 1K

500 SEL 487E - P 500 CB 6271

OC1
300 Schweitzer 300
487E-3,-4
Relay3 - OL CT Ratio 200:1
±

ABB C3 - IEC Cls C Ext. Inverse R

SPAM 150C Pickup = 0.28 (0.05 - 3.2 Sec - 1A)
CT Ratio 250:5 Time Dial = 0.7 SEL 487E
100 100
Curve (Hot, Ip = FLA) 3x = 7 s, 5x = 2.33 s, 8x = 0.889 s
Pickup = 0.85 (0.5 - 1.5 xCT Sec)
t6x = 5 Relay1 - P - 51
50 50
Weighting factor p = 20 OC1
Inst = 3.2 (0.5 - 20 xCT Sec) ALSTOM
30 Time Delay = 0.05 s MCGG X2/X3
30
Relay1 - 3P (Min)
CT Ratio 1500:5
13.03kA @ 3.3kV Extremely Inverse
10MVA TX
Pickup = 1.1 (0.05 - 2.4 xCT Sec)
Time Dial = 0.15 10 MVA
10 10
3x = 1.5 s, 5x = 0.5 s, 8x = 0.19 s
Cable1 - P
5 9 - 1/C 630 mm² 5 ±

Copper XLPE
Seconds

Seconds
Tc = 90C
3 3
Plotted - 3 x 630 mm²

Cable1
1 Present Max Ia" Source PD 1
9-1/C 630
0.411kA @ 132kV

.5 .5
Present Max Ia" at HV SWBD
22.49kA @ 3.3kV ±
.3 .3
I>

Present Min Ia" at HV SWBD Relay1

CB1
11.58kA @ 3.3kV
.1 .1
Present Min Ia" Source PD
0.29kA @ 132kV
.05 .05

.03 .03

Present-Max I"k at HV SWBD

CB3
26.15kA @ 3.3kV

.01 .01
.5 1 3 5 10 30 50 100 300 500 1K 3K 5K 10K

Amps X 100 MILLBROOK PS HV SWBD (Nom. kV=3.3, Plot Ref. kV=3.3) ±

Relay3

umps Load Side