Internal #_x000D_

Diameter Diameter
Acutual IR value
Over Over
Sr. No. Item Description Drum No. Length in minimum
Insulation conductor
Meters (MΩ)
("D" in mm) ("d" in mm)
1 5Cx2.5 sqmm (Cu) PCI-2490 1011 15.56 3.26 2.09
2 3Cx2.5 sqmm (Cu) PCI-1852 662 8.92 3.26 2.09
3 4Cx6 sqmm (Al) PCI-2459 500 0 4.45 3.69
4 4Cx6 sqmm (Al) PCI-2465 529 0 4.45 3.69
5 4Cx16 sqmm (Al) PCI-2634 1000 13.56 6.31 4.77
6 2Cx6 sqmm PCI-2462 400 0 4.45 3.69
7 3.5Cx70 sqmm (Al) PCI-2443 795 11.81 11.35 10.29
8 10Cx2.5 sqmm PCI-2509 994 11.33 3.26 2.09
9 5Cx2.5 sqmm (Cu) PCI-2492 1002 17.15 3.26 2.09
10 3Cx2.5 sqmm (Cu) PCI-2473 1000 6.47 3.26 2.09
11 4Cx6 sqmm (Al) PCI-2457 809 0.713 4.45 3.69
12 3.5Cx70 sqmm (Al) PCI-2440 491 34.1 11.35 10.29
13 3Cx2.5 sqmm (Cu) PCI-2476A 95 21.3 3.26 2.09
14 4Cx16 sqmm (Al) PCI-2455 200 1.451 6.31 4.77
15 19Cx2.5 sqmm (Cu) PCI-2533 497 15.58 3.26 2.09
16 19Cx2.5 sqmm (Cu) PCI-2531 489 5.99 3.26 2.09
17 14Cx2.5 sqmm (Cu) PCI-2517 999 1.9 3.26 2.09
18 14Cx2.5 sqmm (Cu) PCI-2520 1002 2.22 3.26 2.09
19 14Cx2.5 sqmm (Cu) PCI-2523 605 0.695 3.26 2.09
20 3.5Cx70 sqmm (Al) PCI-2439 116 15.7 11.35 10.29
21 14Cx2.5 sqmm (Cu) PCI-2518 587 4.58 3.26 2.09
22 10Cx2.5 sqmm PCI-2500 993 7.17 3.26 2.09
23 5Cx2.5 sqmm PCI-2488 1009 0 3.26 2.09
24 10Cx2.5 sqmm PCI-2502 992 0 3.26 2.09
25 3Cx2.5 sqmm (Cu) PCI-2470 600 2.67 3.26 2.09
26 10Cx2.5 sqmm PCI-2507 3.26 2.09
27 4Cx6 sqmm (Al) PCI-2460 211 5.54 4.45 3.69
28 3Cx2.5 sqmm (Cu) PCI-2474 863 9.44 3.26 2.09
PCI-2238/
29 19Cx2.5 sqmm (Cu) 175 0.05 3.26 2.09
2538
30 7Cx2.5 sqmm PCI-2496 10 - 3.26 2.09
 Internal #_x000D_

Insulation Reistance
constant "K" =
Remarks
LR/[(1000xLog10(D/d)] in
MΩ Km
81.48 0.193
30.58 0.193
0.00 Voltage Not injected 0.081
0.00 Voltage Not injected 0.081
111.59 0.122
0.00 Voltage Not injected 0.081
220.50 0.043
58.33 0.193
89.00 0.193
33.51 0.193
7.09 0.081
393.21 0.043
10.48 0.193
2.39 0.122
40.11 0.193
15.17 0.193
9.83 0.193
11.52 0.193
2.18 0.193
42.77 0.043
13.92 0.193
36.88 0.193
0.00 Voltage Not injected 0.193
0.00 Voltage Not injected 0.193
8.30 0.193
Empty Drum avialable i.e.
0.00
cable used. 0.193
14.37 0.081
42.20 0.193
0.05 Partial voltage injected. 0.193
Only 10 Mtr cable availablein
drum. Rest used. 0.193
 Internal #_x000D_

Acutual IR value
Sr. No. Item Description Location of Cable Length in minimum
Meters (MΩ)

1 7Cx2.5 sqmm Bay 429 - 89B to 429 - RTA 160 137

2 5Cx2.5 sqmm Bay 429 - 89BE to 429 - RTA 170 73.3
3 5Cx2.5 sqmm Core 1 -(Bay 427 CT) CT Interpole R to Phase 18 221
4 5Cx2.5 sqmm Core 2 -(Bay 427 CT) CT Interpole R to Phase 18 227
5 5Cx2.5 sqmm Core 3 -(Bay 427 CT) CT Interpole R to Phase 18 394
6 5Cx2.5 sqmm Core 4 -(Bay 427 CT) CT Interpole R to Phase 18 219
7 5Cx2.5 sqmm Core 5 -(Bay 427 CT) CT Interpole R to Phase 18 178
8 5Cx2.5 sqmm Core 1 -(Bay 427 CT) CT Interpole B to Phase 18 228
9 5Cx2.5 sqmm Core 2 -(Bay 427 CT) CT Interpole B to Phase 18 203
10 5Cx2.5 sqmm Core 3 -(Bay 427 CT) CT Interpole B to Phase 18 254
11 5Cx2.5 sqmm Core 4 -(Bay 427 CT) CT Interpole B to Phase 18 512
12 5Cx2.5 sqmm Core 5 -(Bay 427 CT) CT Interpole B to Phase 18 218
13 3Cx2.5 sqmm Bay 427 CB (CBMB to Kiosk) 70 90.2
14 5Cx2.5 sqmm 425 RBS to DCDB (Control room) 300 21.7
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
 Internal #_x000D_

Diameter Diameter Insulation Reistance

Over Over constant "K" =
Remarks
Insulation conductor LR/[(1000xLog10(D/d)] in
("D" in mm) ("d" in mm) MΩ Km
3.26 2.09 113.53 0.193
3.26 2.09 64.54 0.193
3.26 2.09 20.60 0.193
3.26 2.09 21.16 0.193
3.26 2.09 36.73 0.193
3.26 2.09 20.42 0.193
3.26 2.09 16.59 0.193
3.26 2.09 21.26 0.193
3.26 2.09 18.93 0.193
3.26 2.09 23.68 0.193
3.26 2.09 47.73 0.193
3.26 2.09 20.32 0.193
3.26 2.09 32.70 0.193
3.26 2.09 33.72 0.193