MAJURO ATOLL DISTRIBUTION SYSTEM

POWER SOURCE: 13800kVA & 4160kVA
SECONDARY POWER: 120/208 Volt 60Hz
HOURS OF OPERATION:  24 hours, 7 days a week.
DISTRIBUTION TRANSFORMER: 280 Pole mount (15 - 75kVA)
117 Pad-mount (15 - 1000kVA)
DISTRIBUTION SYSTEM: Overhead and Underground.
FEEDER ONE: Total run 146,885ft (27.81 miles)
TOWN FEEDER ONE: Total run 15,894ft (3.01 miles)
FEEDER TWO: Total run 16,110ft (3.05 miles)
TOWN FEEDER TWO:

Total run 3,855ft (0.731 miles)

FEEDER THREE:  Total run 7,160ft (1.356 miles)
   

Primary Pole Assets (Pole mounted transformers are listed separately below.)

Item Description

Quantity

Primary poles

266

Single Cross Arms

357

Double Cross Arms

159

HV Ball Pin Insulators

891

HV Dead End Insulators

493

Single LV Insulators

685

3 Rack Mounted LV Insulators

85

4 Rack Mounted LV Insulators

283

HV Cutouts

511

Surge Arrestors (separate from arrestors included on transformers)

129

Down Guys

98

Stub Guys

7

Sidewalk Guys

3

Pole Braces

6

3" HV Weather heads

26

4" HV Weather heads

42

5" HV Weather heads

2

6" HV Weather heads

4

1 ¼" LV Weather heads

20

1 ¼" LV Weather heads

10

2" LV Weather heads

91

3" LV Weather heads

17

4" LV Weather heads

11

HV Shrink Terminators

157

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13.8KV Pole Mounted Transformer (Single Phase)

Location

Rating, kVA

15 25 37.5 50 75
Feeder 1

2

21

37

19

7

Feeder 2

3

3

25

51

11

Total

5

24

62

70

18

4160V Pole Mounted Transformers (Single Phase)

Location

Rating, kVA

15 25 37.5 50 75
TF1 1 9 28 27 10
TF2 0 0 0 0 0
LAURA 1 22 7 4 3

Total

1 22 36 32 13

Secondary Pole Assets

Item Description

Quantity

Secondary poles

760

Single LV insulators

1183

3 Rack Mounted LV insulators

153

4 Rack Mounted LV insulators

5

Down Guys

17

Stub Guys

0

Sidewalk Guys

1

Pole Braces

0

1 ¼" LV Weatherheads

87

1 ½" LV Weatherheads

25

2" LV Weatherheads

184

3" LV Weatherheads

7

4" LV Weatherheads

1

13.8 KV Padmount Transformers

Location

Rating, kVA

15 25 30 37.5 45 50 75 112.5 125 150 200 225 300 500 750 1000
Fdr 1 0 0 0 1 1 29 13 3 0 2

1

3

5 3 1 2
Fdr 2 0 1 1 0 3 1 3 2 0 2 0

1

10 5 0 1
Fdr 3 0 0 0 0 0 1 2 0 0 1 0 0 3 1 2 1
TF2 U/G 0 0 0 0 0 1 9 0 0 2 0

1

0 1 0 0

Total

0 1 1 1 4 32 27 5 0 7

1

5

18 10 3 4

4160V Padmount Transformers

Location

Rating, kVA

15 25 30 37.5 45 50 75 112.5 125 150 225 300 500 750 1000
Ejit 0 0 0 0 0 4 1 0 0 0 0 1 0 0 0
TF 1 0 0 2 0 0 1 1 1 0 1 3 0 0 0 0
TF2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Laura 8 1 0 0 0 12 4 0 0 1 1 1 0 0 0

Total

8 1 2 0 0 17 6 1 0 2 4 2 0 0 0

13.8KV/ 4160V Padmount Substation Transformers

Location

Quantity

Rating, kVA

Jenrok Substation

1

3150

Uliga Substation

0

0

Laura Substation

1

1500

Total

2

 

HV Circuit Breakers (VCBS and OCBS)

Location

Type

Voltage Rating

Quantity

Laura

VCB

4160V

1

Airport Substation

VCB

13.8KV

1

Kessai Switching Station

VCB

13.8KV

1

Momotoro Switching Station

VCB

13.8KV

1

Uliga Substation

VCB

13.8KV

1

Jenrok Substation

VCB

4160V

1

MIHS Switching Station

VCB

4160V

1

Total

   

7

Padmount Switches

Location

Voltage Rating

Quantity

Feeder 1

13.8KV

35

Feeder 2

13.8KV

7

Feeder 3

13.8KV

7

Town Feeder 2 UG

13.8KV

5

Total

 

54

Conductors

Description

Quantity
Total # 2/0 AWG Bare Copper Conductor (includes overhead phase

Conductors and overhead and direct buried neutral)

409,739 LF

Total # 2/0 AWG XLP Shielded Insulated Conductor (direct buried XLP

Insulation rated at 15KV)

447,792 LF

#2 AWG Triplex Cable (two 600V insulated and one bare neutral)

163,707 LF

#4 AWG Triplex Cable (two 600V insulated and one bare neutral

209,486 LF

#6 AWG Triplex Cable (two 600V insulated and one bare neutral

150,890 LF

#2 Insulated, Single Conductor (insulation rated at 600V)

55,216 LF

#4 Insulated, Single Conductor (insulation rated at 600V)

74,174 LF

#6 Insulated, Single Conductor (insulation rated at 600V)

53,100 LF

#6 Bare copper (pole grounding conductor and oil)

14,500 LF

PVC Conduit (Schedule 40)

Size

Quantity

1 ¼"

14,600 LF

1 ½"

4,400 LF

2"

38,000 LF

3"

3, 800 LF

4"

15,700 LF

5"

100 LF

6"

200 LF

 

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