bil subdivisionn

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Camarines Norte State College

College of engineering and Industrial Technology

Daet, Camarines Norte

Electrical Engineering Department

A design entitled

DESIGN OF DISTRIBUTION SYSTEM OF BIL SUBDIVISION

Is presented to the faculty of College of Engineering and Industrial Technology

In partial fulfillment to the requirements in our subject

Electrical Power Transmission and Distribution

( EE 22 )

By:

Bendrian Z. Babagay

Arjay N. Icatlo

Michael D. Limboy

Engr. Aileen S. SalvadorInstructor

March 2010


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PREFACE

This work is one of a requirement in the course Bachelor of Science in Electrical

Engineering

The designers become more exposed when it comes to designing a transmission

system, and hoping that this knowledge to improve more once they have a particular job.

The research paper includes the design of transmission and distribution lines for

different loads such as residential, commercial, institutional, and industrial loads.


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ACKNOWLEDGMENT

The designers would like to extend their greatest gratitude to the persons who help

bringing this design possible.

Their parents, who brought them into this earth and gave them life, for their

undying love and support

Their classmates, for their support, criticisms, and encouragement

Their instructress, for the ideas, guidance and motivation

Above all, the Almighty God, from who came all the wisdom and knowledge this

world possessed.

The designers

Bendrian Z. BabagayArjay N. Icatlo

Michael D. Limboy


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INTRODUCTION

Electrical phenomena are omnipresent in nature, so mankind started from simple

observations and slowly built his understanding of electricity. Since we all know that the

creation of the world exists in two occurrences, the day and night. Let us stress the time of

darkness, imagine the world without light at night. Ancient people lie on the discovery of

fire so that anyone creates an insight which will contribute to the discovery of electricity.

After electricity was on the zenith of study in everywhere in the world, the invention

of the different machine took place around 19th century. Large industry, motor vehicles

and other automatic and manually operated machine were now on top as proof of modern

civilization and technology. All of this invention was developed and improved through the

aid of electricity and if the latter is concern, we must know how to use and conserve it

wisely for the purpose of minimizing the cost of operation, maintenance and damage to

nature. The invention of transformer is the main reason of this study for isolating and

giving emphasis to the word substation. The word substation comes from the daysbefore the distribution system become a grid. Substation is used to step down the

incoming voltage supply so that the requirements of the domestic and industrial are met.

A reliable and stable supply of electric power is considered a necessity for

development. Nowadays, center of economic and commercial establishments in a certain

place consider electric power as the heart of their business. The design objective for the

substation is to provide as high level of reliability and flexibility as possible while satisfying

system requirements and minimizing total investment cost. With these ideas, the

researchers pave to install an Industrial Substation at Central Plaza area which is the

center of commercial industry in the province of Camarines Norte. It aims to distinguish

the convenience and effectivity as well as the continuity of power service between power

systems existing at Central Plaza and compared it to the above mentioned.


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DEFINITION OF TERMS:

AMPERE. The practical unit for measuring flow of current, when a one ohm resistance

is connected to one volt source, one ampere will flow.

AMPACITY. The current in amperes, which a conductor can carry continuously under

the conditions of use without exceeding its temperature rating

ASSEMBLY. A combination of all or of apportion of component parts included in an

electric apparatus, mounted on a supporting frame or panel, and properly

intertwined.

AUTOMATIC. Self-acting operating by its own mechanism when actuated by some

impersonal influence

BUILDING. A structure that stands alone or that is cut-off from adjoining structures by

firewalls with all openings therein protected by approved fire doors.

BUILDINGS, INSTITUTIONAL. Include school buildings, hospitals, museums,

display centers, government buildings and the like.

BUS. A conductor, a group of conductors, in the switchgear assemblies which serves

as a common connection for two or more circuits

CIRCUIT

CIRCUIT, BRANCH. The circuit conductors between the final overcurrent

device protecting the circuit and the outlet(s)

CIRCUIT BREAKER. A device designed to open and close a circuit by

non-automatic means and to open the circuit automatically on a

predetermined overcurrent without damage to itself when properly applied

within its rating.

COVERED. A conductor encased within material of composition or thickness that is not

recognized by the code as electrical insulation.

CUT-OUT. An assembly of a fuse supports with either, a fuse holder, fuse carrier, or

disconnecting blade.

DEMAND FACTOR. The ratio of the maximum demand of a system, or part of system,

to the total connected load of a system, to the total connected load of a system or

the part of the system under consideration.

DISCONNECTING MEANS. A device that, or group of devices, or other means by

which the conductors of a circuit can be disconnected from their source of supply.


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DROP. The voltage drop that occurs across a resistor due to current flow through the

resistor

DWELLING, MULTIFAMILY. A fixed, stationary, or portable self-contained, electrically

utilization equipment which words or symbols design to convey information or

attract attention

DWELLING, MULTIFAMILY. A building that contain three or more dwelling unit

ELECTRICAL SIGN. A fixed, stationary, or portable self-contained, electrically

utilization equipment which words or symbols design to convey information or

attract attention

ESTABLISHMENTS.

ESTABLISHMENTS, COMMERCIAL. Include department stores, stadiums

condominiums, convention centers, restaurants, etc. used for business or

profit.

ESTABLISHMENTS, INDUSTRIAL. A building or part of a building (other than

office or exhibit space) where persons are employed in manufacturing

processes or in the handling of materials, as distinguished from dwelling,

offices and like occupancies.

FEEDER. A circuit conductor between the service equipment, or the generator

switchboard of an isolated plant, and the final branch-circuit overcurrent device

FUSE. An overcurrent protective device with a circuit-opening fusible member which is

heated and severed by the passage of overcurrent through it

GROUND. A conducting connection, whether intentional or accidental, between

electrical circuit equipment and the earth

ILLUMINATION. Density of the luminous flux on a surface; it is the quotient of the flux

by the open area of the surface when the latter is uniformly illuminated.

INSTALATIONS. An assembly of electric equipment in a given location on designed

for coordinated operation, and properly erected and wired.

JOINT. A connection between two or more conductors

LIGHT. For the purpose of illumination, light is visually evaluated as radiant energy.

LOAD CENTER. A point at which the load of a given area is assumed to be

concentrated

LOAD, PEAK. The maximum load consumed or produced by a unit or group of units in

a stated period of time. It may be maximum instantaneous load or the maximum


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average load over a designated interval of time.

MAXIMUM DEMAND. The largest of all the demands which have occurred during the

specific period of time

OVERCURRENT. Any current in excess of the rated of equipment or the ampacity of a

conductor

PANELBOARD. A single panel or group of panel units designed for assembly in the

form of a single panel, including buses, automatic overcurrent devices to be place

in cabinet or cut-out box placed in or against a wall or partition and accessible only

from the front.

SPLICE. A joint between two wires which possesses mechanical strength as well as

good electrical conductivity


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SELECTION OF TRANSFORMERS:

Sample solution for transformer selection

Given:

Load density for different end users

Highly Urbanized cities and industrial

Estates

20-24 VA per square meters

Not highly urbanized cities 15-20 VA per square meters

Towns and Subdivisions 10-15 VA per square meters

Rural areas 3-10 VA per square meters

We are designing a subdivision we consider 10 15 VA per square meters.

The loads for residential is classified into 3 class the Class A, Class B, and Class C.

We assigned the lowest value of the bracket to the Class C which has less electricity

consumption, the highest value to class A with the highest electricity consumption, and for

the class B we assigned the average value.

Below are the VA per square meter of the different classification of residential loads:

Class A 15 VA/sq. mtrs.

Class B 12.5 VA/sq. mtrs.

Class C 10 VA/sq. mtrs.

Equipment 0001

No of customer served =13

Type of load = Class A (15VA)

Total Area =300 sq. mtrs.

For KVA demand


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For KW demand

For the size of transformer refer to Table 1

Since the demanded is 58,500 VA, it is between 50 and 75 KVA transformer then we

should select the highest one.

Table 1 Standard FLC of single-phase transformer.

KVA 120 V 240V 480V 600 V

1 833 4.17 2.08.. 1.67

1 1/2 125 6.25 313 2.5

2 16.7 8.33 4.17 3.33

3 25. 12.5 6.25 5

5 41.7 20.8 10.4 8.337 1/2 62.5 31.3. 15.6 12.5

10 83.3 41.7 20.8 16.7

15 125 62.5 31.3 25

20 167 83.3 41.7 333

25 208. 104 52.1 41.730 250 125 62.5 50

37 313 156 78 625

50. 417 208 104 833

75 625 313 156 125


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Other Computation

Equipment no 01

Number of costumer served Area

Class A 13 300

Industrial

KW Demand 46800 W

KVA Demand58500

VA

Recommended Transformer 75KVA

Equipment no 02


Class A 9 300

Class B 12 154

KW Demand 50880 W

KVA Demand63600

VARecommended Transformer 75KVA

Equipment no 03


Class B 24 154

Institutional 1 1549

KW Demand 56787 W

KVA Demand70984

VA



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Equipment no 04


Class C 43 72

KW Demand 24768 W

KVA Demand30960

VA

Recommended Transformer 37.5KVA

Equipment no 05


Class C 21 72

KW Demand 12096 W

KVA Demand15120

VA


Equipment no 06


Commercial 1 775

Commercial 3 590

KW Demand 30540 W

KVA Demand38175

VA


Equipment no 07


Class B 12 154

Class C 25 72

KW Demand 32880 W


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KVA Demand41100

VA


Equipment no 08,09,10


Industrial 1 6286

KW Demand 62860 W

KVA Demand78575

VA

Recommended Transformer 30KVA each

Equipment no 11


Institutional 1 1936

KW Demand 24781 W

KVA Demand

30976

VA

Recommended Transformer 37.5KVA

Equipment no 12


Institutional 1 500

street lighting 108

KW Demand 13152 W

KVA Demand16440

VA

Recommended Transformer 20 KVA


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Sample voltage drop computation

From the table on the cable hand book from Phelps dodge the constant reactance of

Aluminum conductor steel reinforced is 0.097 per km and the resistance is 0.000876

per km.

From the equation With a distance of 47.88 m from pole 002 to pole 003

For the current:

VA demand = 58500 VA

Sending Voltage = 230 volts

Substituting the values to the equation we have


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VOLTAGE DROP CO

Primary

Voltage DropNo of Wires Distance

KW

demandVoltage Current

L

Reac

Phase A 1 260.3 180000 7620 23.62 0.0

Phase B 1 370.1 175000 7620 22.97 0.0

Phase C 1 377.60 175000 7620 22.97 0.0

Secondary

Voltage Drop

No of

Wires Distance

KW

demand Voltage Curr

Equipment no 0001 From pole 002 to 004 1 89.0958500

VA230 254

Equipment no 0002 From pole 003A to003E

1 112.1963600

VA230 276

Equipment no 0003 From pole 004A to004C

1 72.2170984

VA230 308

Equipment no 0004 From pole 005 to006C

1 212.4830960

VA230 134

Equipment no 0005 From pole 007 to007C

1 101.2215120

VA230 65.

Equipment no 0006 From pole 008 to 009 1 28.0930540

VA230 132

Equipment no 0007 From pole 011 to011B

1 92.2832880

VA230 142


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Table 2.0 Resistance Rating per Miles

ACSR

ALUMINUM COPPER

EQUIVAL

ENT

AWG

MCM

RESISTANCE

AWG

MCM

AREA

Square

Inches

Ohms Per

Mile (61 %at

25 C)

6 0.021 8 3.56

5 0.026 72.82

2.24

4 0.033 6 2.24

4 0.033 6

3 0.041 5 1.78

2 0052 4141

1.41

2 0.052 4 1.12

1 0.066 3

1/0 0.083 2 0.885

2/0 0105 10.702

0.556

3/0 0.132 1/0 0.441

4/0 0.166 2/0

1197 1,680


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Table 2.1 Electrical Characteristics of Single Phase 60-Hz Distribution Transformers.

Size, Single Phase KVAImpedance Percent Z

Percent Voltage Drop through Transformerwith Full-load Current

Cu Loss % Core Loss %

97.5 % pf 80 % pf 50 % pfSingle-Phase Transformer, Voltage, Rating: 2400/4160 to 120/230

3 2.7 32.90 2.56 2.7 2.4 2.27 0.935 2.7 38.40 2.46 2.7 2.51 2.12 0.72

7.5 2.7 43.5 2.35 2.66 2.58 1.96 0.6410 2.7 45.9 2.29 2.66 2.62 1.88 0.57

15 2.8 51.6 2.21 2.71 2.76 1.74 0.5125 2.8 56 2.08 2.64 2.79 1.56 0.46

37.5 2.9 61.8 1.95 2.62 2.9 1.37 0.394

50 2.9 64.7 1.84 2.56 2.89 1.24 0.37275 3.5 69.4 1.99 2.94 3.45 1.24 0.37

100 3.5 69.9 1.96 2.93 3.45 1.2 0.37

Table 2.2Aluminum Conductor Steel Reinforced (ACSR)

NominalSectionalArea-mm

Number and SectionalArea-mm

TensionLoad kg

Weightkg/km

AmpacityConductor DCResistance at

12/km Aluminum Steel

19 6/2.0 1/2.0 698 76.12 180 1.5232 6/2.5 1/2.5 1400 128.6 230 0.899

58 6/3.5 1/3.5 1980 233.1 340 0.49790 6/4.2 1/42 2770 335.5 530 0.345

95 6/4.5 1/4.5 3180 385.2 530 0.301120 30/3.2 7/2.3 5550 573.7 600 0.233160 30/3.6 7/2.6 6990 732.6 730 0.182

200 30/2.9 7/2.9 8620 911.7 780 0.147240 30/3.2 7/3.2 10210 1110 900 0.12

330 26/4.0 7/3.1 10930 1320 1000 0.0888410 26/4.5 7/3.5 13890 1673 1100 0.0702

520 54/3.5 7/3.5 15600 1969 1380 0.0559610 54/3.8 7/3.8 18150 2320 1500 0.0474

STANDAR FUSE LINK AMPERE RATING

1,2,3,6,8,10,12,15,20,25,30,40,50,60,70,80,90,100,110,125,150,175,200,225,250,300,350,400,450,500,6

00,700,800,900,1000,1200,1600,2000,4000,5000,6000


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DESIGN FOR STREET LIGHTING

For the minor roads we were using a single sided lighting arrangement

For a minor road having one side arrangement, and road with of 8 meters, we

should use a 70 watts lamps and a luminaire spacing bracket of 10 40 but considered to

have a spacing of 15 meters. The mounting height will be 8 meters and the mast arm

length to be 1.5 meter.

Illustration:

For the rural highways we were using a single sided lighting arrangement

For rural highways having one side arrangement, the road with of 8 meters, we

should use a 150 watts lamps and a luminaire, we considered 20 meters as the spacing.

The mounting height will be 8 meters and the mast arm length will be 1.5 meters.

Illustration:

20.000 Meters

8.0

00Meters


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Table 3 Specification Guide for Roadway Lighting

Road

Classification

Road

Width,meters

Arrangement

Lamp

Wattage,watts

Luminaire

Spacing,meters

Mounting

Height,meters

Mast

Arm

Length,

meters

Express

10Twin central

250 25-35 12 1.5

15 250 20-35 12 3.0

30

Opposite

250 20-45 12 1.5

25 250 20-40 12 1.5

30 250 20-30 12 1.5

36 250 20-25 12 1.5

40 250 20-22 12 1.5

Major

10One-side

250 10-40 10 1.5

15 250 10-45 12 3.0

10Twin Central

150 20-37 10 1.5

15 250 20-43 12 3.0

20

Opposite

150 20-40 10 3.0

25 250 20-45 10 1.530 250 20-45 10 1.5

36 250 20-45 12 3.0

40 250 20-45 12 3.0

Collector

10One-side

150 10-40 10 1.5

15 250 10-50 12 3.0

10Twin Central

150 20-40 10 1.5

15 150 20-37 12 3.0

20Opposite

150 20-47 10 1.5

25 250 20-48 10 1.5

Rural Highway

8

One-side

150 10-38 8 1.5

10 150 10-37 8 3.0

15 150 15-38 10 3.0

10Twin Central

150 20-45 10 3.0

15 150 20-39 12 3.0


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20 Opposite 150 20-45 8 1.5

Minor

4

One-side

70 10-40 8 1.5

6 70 10-40 8 1.5

8 70 10-40 8 1.5

10 70 10-39 8 1.5

10 Twin Central 70 20-35 8 1.5

15 Staggered 70 10-20 8 1.5

15 Opposite 70 20-40 8 1.5


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SPECIFICATION FOR CONSTRUCTION:

1. General

All construction work shall be done in a thorough and workmanlike manner

in accordance with the Staking Sheets, Plans and Specifications, and the

Construction Drawing.

2. Distribution of Poles

In distributing of poles, large choice, closed grain poles shall be used for

transformers, dead-end, angle and corner poles.

3. Distribution Transformer

The transformer should be designed and manufactured with the latest

applicable provision of ANSI, NEMA, or any recognized equivalent standards.

The transformer shall be rated 13.2 kV primary 240 V secondary, 60 Hertz.

4. Lightning Arrester

Proper selection of an arrester type and rating shall involve the

consideration of the following criteria.

a) Rated voltage

b) Maximum continuous over voltage capacity

c) Protection absorption capability

d) Energy absorption capacity

e) Pressure relief capability

5. Cut-Out

Cut-out support should have the following

a) Joint less current path

b) Silver to silver contact

c) Copper alloy casting should be used on fusetube and bottom support

d) Interchangeable fusetube

e) Solid porcelain insulator with cemented steel rods on top, bottom and back

6. Taps and Jumper

Jumper in other loads connected to line conductor shall have sufficient

slack to allow free movement of the conductor. Where slack is not shown on

construction drawing it will be provide by at least two bonds in vertical plane, of one

in a horizontal plane, or the equivalent. In areas where Aeolian vibration occurs,

special measure to minimize the effect of jumper break shall be used as specified.

7. Splices and Dead ends


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Conductor shall be spliced dead end as shown on the construction drawing.

There shall be not more than one splice per conductor in any span and splicing

sleeves shall be located near conductor support. Maintain also 3050mm or more

separation between the splice and the conductor support. No splice shall be

located in grade 13 crossing span and preferable not in adjacent spans.

8. Guys and Anchors

Guys shall be placed before the conductor are strung and shall be

attached to the pole as shown in the construction drawing. All anchors and rods

shall be in line with the strain and shall be so installed that approximately 15cm of

the rod remain out of the ground. In cultivated fields or other location, as deemed

necessary, the projection of the anchor rod above earth may be increased to

maximum of 30cm to thoroughly tamp to the full depth. When a cone anchor is

used, the hole after the anchor has been set in place, shall be backfilled with

course crushed rocks for 60cm above the anchor, tamping during the filling with

the remainder of the hole to be backfilled and tampered with dirt.

9. Locknuts

A locknut shall be installed with each nut or other fastener on all bolts or

threaded hardware such as insulator pins, upset bolts, double arming bolts, etc.

10. Conductors

Conductor shall be handled with care; conductor shall not be stamped

on nor run over by vehicles. Each reel shall be examined and the wire shall be

inspected for cuts, kinks, or other injuries. Injured portion shall be cut and

conductor spliced. The conductors properly mounted on pulled over suitable

rollers or stringing blocks shall be carefully mounted on pole or cross arm if

necessary to prevent binding while stringing. The neutral conductor shall bemaintained on one side of the pole (preferable the road side) for tangent

construction and for angles not exceeding 30 degrees.

11. Hot Line Clamp and Connectors

Connectors and hot line clamps suitable for the purpose shall be installed

as shown on guide drawings. On all hot line clamp installations, the clamp

and jumper shall be so installed so that they are permanently bonded to the

load side of the line, allowing the jumper to be energized when the clamp is


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disconnected. This applies in all cases, even where the line layout is such that

the trip line is in actuality the main back to the power source. Do not install hot

line clamps directly to the power ACSR conductors. Use tapping armor rods on

top saddles. Before installing hot line clamp to the surface of tapping armor rods,

clean thorough by wire brushing and apply a suitable inhibitor to the area of the

tapping armor rod coming in all contact with the hot line clamp.

12. Lightning Arrester Gap Settings

The external gas electrodes of lightning arrester, combination arrester

cutout units, and the transformer moun ted arrester shall be adjus ted to

the manufacturer's recommended spacing. Care shall be taken that the

adjusted gap is not disturbed when the equipment is installed.

13. Conductor Ties

Ties shall be in accordance with Construction Drawings. Hot line ties shall

not be used at grade B crossings.

14. Sagging of Conductors

Conductor shall be sagged with the conductor manufacturer's

recommendations except that a maximum increase of 7.6cm of the

specif ied sag i n any span wi ll be acceptable but in no circumstances shall a

decrease in the specified sag be allowed.

15. Secondary and Service drops

Secondary conductors may be bare or covered wire or

multi-conductor service cable. Conductor for secondary under build on

primary lines is normally bare except in those instances where prevailing

conditions may limit primary span length to the extent that covered wire

or service cable type. Secondary and service drops shall be so installed as

not to obstruct climbing space. There shall not be more than one splice per

conductor in any span, and splicing sleeves shall not be located near the

conductor support. Maintain 3m or more separation between the splice

and the conductor support. Where the same covered conductors or


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service cables are to be used for the same secondary and service drop

they may be installed in one continuous run.

16. Ground

Ground rod shall be driven in undistributed earth in accordance with

the construction drawing. Where aluminum ground wire is used, it must be

terminated above ground at a galvanized ground rod or splice by a

compression connector to copper steel ground wire extension to the

ground rod of which the top of the ground rod shall be 30cm or more

below the surface of the earth. The ground wire shall be space two feet (2

ft) apart except for a distance of 2.40m above the ground rod and 2.40m

down from the top of the pole where they shall have at least two

connections from the frame case or tank to the multi-grounded neutral

conductor. The equipment shall be interconnected and attached to a

common ground wire.


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TECHNICAL SPECIFICATION

The National Grid Corporation of the Philippines (NGCP), Labo Branch

loc at ed at Talobatib, Labo, Camarines Norte will be the commercial source of the

distribution system of BIL Subdivision. This power source 69kV, three phase

line came from the said substation.

From the source there will be a process of stepping down the voltage from 69

kV to 13.2 kV down to 7620V to 240V. Through the distribution transformers

situated along the different strategic location within the subdivision premises.

Each distribution transformer wi ll have a specific number of consumers to be served.

This expanded radial type of distribution system will be effective enough to

meet the expansion and development requirements of BIL Subdivision for the

year to come. To effectively meet the said requirements, it shall conform to the

proper choice of equipment for the case of power distribution.


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Calculation of Primary Line Main Fuse Cutout No. 1 at Pole No. 1

Tabulation Load

Transfo rmer No. Pole No. A B C1 002 75

2 003A 753 004A 75

4 005 37.55 007A 20

6 009 50

7 011 50

8 007 309 007 30

10 007 3011 003D 37.5

12 010 20Total 180 175 175

Total KVA per phase:

Phase A: 180KVA

Phase B: 175KVA

Phase C: 175 KVA

Solving for the total KVA in the Feeder

KVAT = 3 (Highest KVA/)

= 3 (180)

KVA T = 540 KVA

Solving for Feeder Line Current

I = KVAT/ 3 (Primary Voltage)

= 540/3 (13.2)

I = 23.62 Amp.

For Fuse Rating:I t = ( I ) 3 0 0 %

= 23.62 (300%)I t = 70.86 Amp.

Use = 3 - 80 A Fuse cutout at pole No. 1

For the rating and lightning:

E L = 1 3 . 2 K V /3

= 7 . 6 2 K V

U s e 3 - 1 0 K V s t a t i o n t y p e L i g h t n i n g A r r e s t e r ,

1 2 7 m m d i s t a n c e f r o m b u s h i n g


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Calculation of Primary Line Fuse Cutout No. 2 at Pole No. 4

Tabulation Load

Transfo rmer No. Pole No. A B C1 002 75

2 003A 754 005 37.5

11 003D 37.5

Total 75 75 75


Phase A: 75KVA

Phase B: 75KVA

Phase C: 75 KVA



= 3 (75)

KVA T = 225 KVA



= 225/3 (13.2)

I = 9.84 Amp.


= 9.84 (300%)I t = 29.52 Amp.



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Calculation of Primary Line Fuse Cutout No. 3 at Pole No. 3

Tabulation Load

Transfo rmer No. Pole No. A B C3 004A 75

5 007A 206 009 50

7 011 50

12 010 20Total 75 70 70


Phase A: 75KVA

Phase B: 70KVA

Phase C: 70 KVA



= 3 (75)

KVA T = 225 KVA



= 255/3 (13.2)

I = 9.84 Amp.


= 9.84 (300%)I t = 29.82 Amp.



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Table of General Information

Transformer No Residential Load Commercial

Load

Institutional

Load

Industrial

LoadClass A Class B Class C

1 13

2 9 12

3 24 1

4 43

5 21

6 4

7 12 25

8 1

9 1

10 111 1

12 2

Total 22 48 89 4 4 1


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Tabulation of Connection IV Pole

Pole Residentia

Commerci

Institution

Industrial

001

002 5003 4

003-A 3

003-B 3

003-C 3

003-D 3 1

003-E 8

004 4

004-A 7004-B 11

004-C 6 1

005 8

005-A 7

006 5

006-A 7

006-B 6

006-C 6007 7 1

007-A 9

007-B 2

007-C 3

008 2

009 2

011 15

011-A 12

011-B 9

Total 153 4 2 1


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Summary of Total KVA

A. Residential Customers C. Commercial Customer

B. Industrial Customers

Transformer No.8 30

9 30

10 30

Total 90

Transformer No. KVA

1 75

2 75

3 50

4 37.5

5 20

7 50

Total 307.5

Transformer No. KVA

6 50

Total 50

D. Institutional Customer

Transformer No. KVA

3 25

11 37.5

12 20

Total 82.5


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Single Line Diagram of 500 KVA Substation

500 KVA 3 phase transformerprimary voltage 13200 voltssecondary voltage 7620 volts

80 A Main fuse cutout

3 phase 4 wireMain Feeder

Single Phase DistributionTransformer

Single Phase DistributionTransformer

Three phase DistributionTransformer

69KV Bus

Fuse cutout No. 230 A

Fuse cutout No. 330 A


33/37

BILL OF MATERIALS

Construction of 8 poles with -3 phases primary lines and 7 poles with single phase

secondary lines.

Descriptions UnitPrice

NOOFITEMS

No ofPole

Extendedcost

Anchor, Expanding, 10,000 Lbs, 8 Way, GalvanizedSteel

1,422.96 6 8 68,302.08

Bolt, Carriage 3/8" X 4-1/2" 14.49 2 8 231.84

Bolt, Machine, 1/2" X 6" 34.11 2 8 545.76

Bolt, Machine, 5/8" X 12" 69.90 1 8 559.20

Bolt, Machine, 5/8" X 16" 114.66 2 8 1,834.56

Bolt, Single Upset, 5/8" X 12" 171.03 1 8 1,368.24Brace, Crossarm, 28" Steel or Wood (Each) 165.06 2 8 2,640.96

Brace, Crossarm, 60" - 18" Drop (Pair) 1,263.87 1 8 10,110.96

Insulator, Pin Type, Porcelain, ANSI Class 55 - 3 225.00 6 8 10,800.00

Nut, Lock, Mf Type, 3/8" 13.08 2 8 209.28

Nut, Lock, Mf Type, 1/2" 15.39 2 8 246.24

Nut, Lock, Mf Type, 5/8" 18.15 3 8 435.60

Rod, Armor, Preformed, For #2 ACSR, Single Set 357.24 7 8 20,005.44

Lag, Screw, 1/2" X 4" 24.00 8 8 1,536.00

Wire, Tie, Aluminum, Alloy, Soft, #4 AWG (Ft.) 7.26 9 8 522.72

Bolt, Oval Eye, 3/4" X 10" 267.93 6 7 11,253.06

Pin, Crossarm, Steel, 5/8" X 10-3/4" 732.45 6 7 30,762.90

Insulator, Spool, 1-3/4", ANSI Class 53 - 2 45.00 1 7 315.00

Washer, Round, 1-3/8" Dia. X 12 Ga. 13.08 2 7 183.12

Crossarm, Wood, 3-3/4" X 4-3/4" X 10' 3,990.00 1 7 27,930.00

Crossarm, Wood, 3-1/2" X 4-1/2" X 8' 2,595.60 1 7 18,169.20

Total 207,962.16


34/37

Construction of 2 poles with -3 phase primary lines and single phase secondary lines. With

Pole Type Conventional, 20 KVA Transformer


Pole Type Conventional, 37.5 KVA Transformer

Bolt, Machine, 5/8" X 12" 69.90 2 2 279.60

Washer, Square, Flat 2-1/4" X 2-1/4" X 3/16" 20.55 2 2 82.20

Connector, Compression, #1/0 - #2/0 ACSR Run To #1/0 - #2/0 199.74 4 2 1,597.92

Transformer, Pole Type, Conventional, 15 KVA 84,300.00 2 -



Transformer, Pole Type, Conventional, 37.5 KVA 138,747.00 1 2 305,621.22

Transformer, Pole Type, Conventional, 50 KVA 152,810.61 1 2 -Transformer, Pole Type, Conventional, 75 KVA 236,760.00 2 -

Clamp, Hot Line, #2 - #4/0 ACSR Main to #2 - #4/0 417.78 1 2 835.56

Connector, Split Bolt 534.15 1 2 1,068.30

Wire, Ground, Aluminum Ec. Grade, #4 (Ft.) 13.23 6 2 158.76

Cutout And Arrester Combination W/ Load Break 15,019.98 1 2 30,039.96

Cutout And Arrester Combination 12,101.04 1 2 24,202.08

Nut, Lock, Mf Type, 5/8" 18.15 2 2 72.60

Rod, Tapping, Preformed, For #2/0 ACSR 176.01 1 2 352.02

Total 58,689.00

Bolt, Machine, 5/8" X 12" 69.90 2 2 279.60


Connector, Compression, #1/0 - #2/0 ACSR Run To #1/0 - 2/0 199.74 4 2 1,597.92


Transformer, Pole Type, Conventional, 20 KVA 104,147.19 2 208,294.38


Transformer, Pole Type, Conventional, 37.5 KVA 138,747.00 1 2 -








Nut, Lock, Mf Type, 5/8" 18.15 2 2 72.60


Total 364,310.22


35/37





Bolt, Machine, 5/8" X 12" 69.90 2 3 419.40


Connector, Compression, #1/0 - #2/0 ACSR Run To #1/0

- #2/0199.74 4 3 2,396.88




Transformer, Pole Type, Conventional, 37.5 KVA 138,747.00 3 -


Transformer, Pole Type, Conventional, 75 KVA 236,760.00 1 3 1,253.34

Clamp, Hot Line, #2 - #4/0 ACSR Main to #2 - #4/0 417.78 1 3 1,253.34





Nut, Lock, Mf Type, 5/8" 18.15 2 3 108.90


89,286.84

Bolt, Machine, 5/8" X 12" 69.90 2 3 279.60Washer, Square, Flat 2-1/4" X 2-1/4" X 3/16" 20.55 2 3 82.20

Connector, Compression, #1/0 - #2/0 ACSR Run To #1/0 -#2/0

199.74 4 3 1,597.92

Transformer, Pole Type, Conventional, 15 KVA 84,300.00 - -



Transformer, Pole Type, Conventional, 37.5 KVA 138,747.00 - -


Transformer, Pole Type, Conventional, 75 KVA 236,760.00 1 3 -






Nut, Lock, Mf Type, 5/8" 18.15 2 3 72.60


Total 88,033.50


36/37

Construction of 1 poles with -3 phase primary lines, With 3 - Pole Type Conventional, 30

KVA Transformer


Crossarm, Wood, 3-3/4" X 4-3/4" X 8' 3,210.00 1 1 3,210.00

Bolt, Carriage 3/8" X 4-1/2" 14.49 2 1 28.98Lag, Screw, 1/2" X 4" 24.00 4 1 96.00

Bolt, Double Arming, 5/8" X 14" 136.50 4 1 546.00

Connector, Compression, #1/0 - #2/0 ACSR Run To #1/0 #2/0 199.74 3 1 599.22


Clamp, Hot Line, #2 - #4/0 ACSR Main to #2 - #4/0 417.78 3 1 1,253.34


Conductor, Bare, ACSR #2, AWG. 6/1 (MTS.) 39.03 12 1 468.36

Insulator, Spool, 1-3/4", ANSI Class 53 - 2 45.00 3 1 135.00


Brace, Crossarm, 28" Steel or Wood (Each) 165.06 2 1 330.12

Bracket, Transformer, Secondary, W/ 1-3/4" Spool 511.89 2 1 1,023.78

Bracket, Cluster Type 511.89 2 1 1,023.78

Nut, Lock, Mf Type, 3/8" 13.08 2 1 26.16

Nut, Lock, Mf Type, 5/8" 18.15 2.00 1 36.30

Wire, Tie, Aluminum, Alloy, Soft, #4 AWG (Ft.) 7.26 6.00 1 43.56

Rod, Armor, Preformed, For #2 ACSR, Single Set 357.24 3.00 1 1,071.72

Total 424,889.73

Wires and poleswires

primary

Conductor, Bare, ACSR #2, AWG. 6/1 (MTS.) 39.03 1,100.00 42,933.00

secondary


Neutral


148,314.00

Pole

Primary

Pole, Steel, 35 ft. 23,000.00 391,000.00 391,000.00

Secondary

Pole, Steel, 30 ft. 15,000.00 165,000.00 165,000.00

556,000.00

Total Php2,589,955.33


37/37

Some Computation of Individual Transformers:

Equipment No. 0011 (tap on the pole No. 010 institutional load (85% PF, 90% DF)

Pole No. Load Description KVA DF(%) MDKVA

010 Park and Street Lighting 34.4 90% 30.98

Calculations:

Use 1 37.5 KVA single transformer, tap at pole no. 010

Primary Voltage 13.2/7.62 KV

Secondary Voltage 115/230 V

For use cutout:

Use 1- 8 A fuse link @ 100 A fuse cutout

bil subdivisionn

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