Underground Construction Manual Issue 12 - ergon.com.au · CONSTRUCTION MANUAL ... d d it io n a l if r e q ’d. 8.0 m M in. (R o d) 2 0.0 m M in. (D e e p D ri ll e d) (ref. note

UNDERGROUND CONSTRUCTION MANUAL

EARTHING Go to SECTION INDEX Back to MAIN INDEX

DESCRIPTION DWG

INDEX

60 5132 11

CONSTRUCTION CONSTRUCTION DESCRIPTION DWG

C. Noel

A. Bletchly

C

F

03.06.11 EARTHING03/06/11

T.Borg

5161/1

5161/2

11kV PADMOUNTED SUBSTATION

EARTHING CONSTRUCTION

EPM11/COM

EAU

EARU

EADDCU

5013/1

5013/2

EPM11/SEP

EAU

EARU

EADDCU

5014/1

5014/2

11kV & LV cable connection & GPO separate

5014/4

5014/3



EPM22/COM

EAU

EARU

EADDCU

22kV Padmounted substation common earth 5123/1

5123/2

EPM22/SEP

EAU

EARU

EADDCU

5125/1

5125/2

22kV Padmounted substation separate earth

22kV & LV cable connection & GPO separate 5125/3

PILLAR / DISTRIBUTION CABINET


EAU

EARU

EMEN Electricity supply pillar and distribution cabinet 5085

5250


ERMU11/COM

EAU

EARU

EADDCU

5221/1

5221/2

11kV Ring Main Unit common earth

D 14.01.14

5294/1

11kV Padmounted substation

Construction code guide - MEN and additional

earthing

Construction code guide - Padmounted

Substation & Ring Main Unit earthing

Minimum separation between Ergon earthing

systems, Telstra plant & fire hydrants

common earth arrangement - material


common earth arrangement - material

separate earth arrangement - material

separate earth arrangement - material

earthing modifications Contract QESI No.30/98

11kV & LV cable connection separate earthing

modifications Contract No.2004/037/T

arrangement - material

22kV Padmounted substation common earth

arrangement


22kV Padmounted substation separate earth

arrangement

earthing modifications Contract QESI No.30/98


11/22kV Ring Main Unit common earth

arrangement

11/22kV Ring Main Unit separate earth

arrangement



5294/211/22kV Ring Main Unit separate earth

arrangement

E 19.05.16


22/11kV PADMOUNTED AUTO TRANSFORMER

5353/1

5353/2

EPM22-11 22/11kV Padmounted Auto Transformer

earth arrangement - material

22/11kV Padmounted Auto Transformer

earth arrangement

5340/1

5340/2



common earth arrangement - material - community title

common earth arrangement - community title

22kV Padmounted substation common earth 5341/1

community title - materials

5341/3

5341/222kV Padmounted substation common earth

community title

22kV Padmounted substation common earth

community title

5125/4Separate earthing modifications

F 11.04.18

11kV RING MAIN UNIT

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED

Ergon Energy Corporation Ltd

ABN 50 087 646 062Dwg Sh

FILE: 5

UNDERGROUND DISTRIBUTION

EARTHING

5161

EXAMPLE:-

EARTH

E

21/11/01

E PM11/COM

SYSTEMVOLTAGEEQUIPMENT

PM = Padmount Substation

E PM11/COM = Earthing 11kV padmounted substation with common earth system

CONSTRUCTION CODE GUIDE

SEP = Separate Earth

COM = Common Earth

60 5161 22

detail drawings in this manual.

appears on relevant construction

Code shown within dashed box

A

B 18.3.11

C

RMU = Ring Main Unit

PADMOUNTED SUBSTATION & RING MAIN UNIT EARTHING - CONSTRUCTION CODE

PADMOUNTED SUBSTATION & RING MAIN UNITA.Bletchly

T.Borg

C.Noel

C 19.05.16

22-11 = 22kV to 11kV

22 = 22kV

11 = 11kV

}Omit for 22kV to 11kV

HARD COPYUNCONTROLLED

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED


ABN 50 087 646 062Dwg Sh

FILE: 5


�L. Burton

��

20.4.11��

�

��

��

525060 5250 1

EARTHING

SYSTEMS, TELSTRA PLANT & FIRE HYDRANTS

MINIMUM SEPARATION BETWEEN ERGON EARTHING

2.0 meters

0.3 meters

0.3 meters

0.3 meters

10.0 meters0.3 meters

10.0 meters

10.0 meters

0.3 meters 0.3 metersPillar 1.0 meters

2.0 meters 0.3 meters

0.3 meters

10.0 meters

10.0 meters

2.0 meters

0.3 meters

0.3 meters

0.3 meters

0.3 meters

10.0 meters

10.0 meters

10.0 meters

A. Bletchly

C. Noel

Type of Earthing System

Communication Pillars / Cabinets

Cable pits / Manholes

Miscellaneous Earths

Payphones In Plastic Conduit

Cable Plastic Sheathed /

Jacketed

Telephone Exchange

Radio Sites

Street mounted

equipment housings

Padmount Transformer

CMEN

Ground Mounted

Transformer CMEN

SEPARATE

LV

HV

SEPARATE

LV

HV

Free Standing Switchgear

With HV earth bonded

to CMEN

Without HV earth bonded

to CMEN

Fire Hydrants

QUICK REFERENCE MINIMUM SEPARATIONS BETWEEN ERGON EARTHING SYSTEMS & COMMUNICATION PLANT

Communication Plant Types Communication Cable Types

15.0 meters - Note 1











NOTES:

1. NBN FDH site to be minimum 10.0m as per NBN Co. requirements.

�

B 13.02.12

B


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�DRAWN

DATE

PASSED

APPROVED


ABN 50 087 646 062Dwg Sh

FILE: 5


NOTES:

DEEP DRILL EARTHING:

DEEP DRILL EARTH TESTING:

Connection grid to earth bar

Earth rod additional

Earth rod additional depthAR

1

41.

2.

3.

EARTHING

2

5013

MATERIAL - COMMON EARTH

ASSY

525-1

526-1

ASSY

524-1

524-2

525-2

MATERIAL - ADDITIONAL EARTH

DESCRIPTION QTY

QTYDESCRIPTION

Earth - deep drilled526-2

Earth connector additional

COMMON EARTH - MATERIAL

Earth padmounted substation

160 5013 1

earthing added as necessary.

installation shall be tested after 7 days and additional

is not achieved prior to completion of work on site the

days after earthing is installed. Where specified resistance

Specified earth resistance may not be achieved for some

SEPARATION FROM COMMUNICATIONS:

5/2/03

For separation from other communications assets refer Standards Section.

ADDITIONAL EARTHING:

- Bare earth cable = 2.0m

- Earth rod = 2.0m

cabinets, cable pits/manholes, payphones or miscellaneous earths:

Provide the following minimum separation to communications pillars/

B 28.04.14

C

C. Noel

A. Bletchly

T. Borg

Refer design.

Sites with high fault current may require less than 1.0 ohm connected.

of 200mm from the R.P. Street Alignment.

If required, locate in the Electricity Footpath Allocation at a minimum

communications.

below ground if necessary to achieve the required separation to

Bury at 200mm deep and provide orange caution tape laid 100mm

or

below ground if required separation to communications is achievable;



- Earth rod = 0.3m

(conduit):

Provide the following minimum separation to communications cable


enhancing compound. Do not add water.

The holes are to be refilled immediately with dry earth

A drilling rig using 75mm bit is required.

(minimum of 20m unless good moisture is reached).

35mm bare copper cable deep drilled to moisture.

Provide orange caution tape laid 250mm below ground over grading ring.

Site grading ring on footpath shall be laid 500mm below ground.

Refer drawing no 5014.

earth grid is connected to MEN then Separate LV earthing is required.

If the required resistance specified by design cannot be achieved when

C 22.10.15


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED


ABN 50 087 646 062Dwg Sh

FILE: 5


PLAN

FO

OTP

AT

H

F FF

F F

F

F F

F

F

F

F

F

F

F

F

F

F

F

F

F

FF

F

F

F

FF F

FF

FF

F

F

F

F

F

F

F

F

F

F

F

1200-

A

if required shown thus.

Additional earthing

526-2

524-1 and 2 or

Assy selection

Alignment

R.P. Street

250(ref)

500

100

Assy 525-1

100

Boundary

Site

3000 b

oundary

100

100250

2800 boundary600

(Additional)

(Additional Rod)

(Deepdrilled, Cable)

A

-

Assy 525-2

Assy 525-1

edge beam

under concrete

Earth grid

50

Assy 526-1

Earth Bar

Substation

Earth Bar

Substation

Bar

LV Earth

Bar

Neutral

MEN.

N

DISCONNECTED

10 ohm Max.CONNECTED

Earth Bar

Substation

Assy 526-1

LV

HV

100

SECTION

5013

EARTHING

COMMON EARTH ARRANGEMENT

and 525-2

Assy 525-1

Construction Type

EPM11/COM

EAU

EARU

EADDCU

60 5013 22

Earth Grid

5/2/03B 28.04.14

D

C. Noel

A. Bletchly

T. Borg


Deep drill 2

0.0

m Min.

Earth rod 8.0

m Min.

Additio

nal if req’d.

8.0

m Min. (R

od)

20.0

m Min. (D

eep Drilled)

(ref. note 2)

1 ohm Max.

orange

Caution tape

250

500

22.10.15C

11.04.18D

(ref)

365

A ORIGINAL ISSUE

DRAWN

DATE

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APPROVED


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FILE: 5


NOTES:






41.

2.

3.

EARTHING

2


ASSY

525-1

526-1

ASSY

524-1

524-2

525-2


DESCRIPTION QTY

QTYDESCRIPTION




1










- Earth rod = 2.0m



C. Noel

A. Bletchly

T. Borg

Refer design.





- Earth rod = 0.3m

(conduit):





Refer drawing no 5014.

earth grid is connected to MEN then Separate LV earthing is required.


534060 5340 1

25/08/15

COMMON EARTH - MATERIAL - COMMUNITY TITLE

2

below ground.


separation shall be minimum 40m.

twice the depth of the drilled hole, e.g. for 20m hole

The separation between earth rods shall be at least






4.

side-by-side, but not using the same bolt.

Tails for earth mat are to be connected to substation earth bar

5.

be spaced minimum 4m.

2 x earth rods depth from previous rods, e.g. single earth rods shall

Additional earth rods should be installed with minimum separation of


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED


ABN 50 087 646 062Dwg Sh

FILE: 5


F FF

F F

F

(Additional)

(Additional Rod)

(Deepdrilled, Cable)A

-

Assy 525-2 Assy 525-1

orange

Caution tape

50

Assy 526-1

Earth Bar

Substation

Earth Bar

Substation

Bar

LV Earth

Bar

Neutral

MEN.

N

DISCONNECTED

10 ohm Max.CONNECTED

SECTION

EARTHING

Construction Type

EPM11/COM

EAU

EARU

EADDCU

2

Earth Grid

5/2/03B 28.04.14

C. Noel

A. Bletchly

T. Borg


(ref. note 2)

1 ohm Max.

C 6.8.15

earth grid

HV / LV

alignment

R.P. street

5000

4800

PLAN

300

534060 5340 2

COMMON EARTH ARRANGEMENT - COMMUNITY TITLE

1300 1300

400

1065

1065

500

250

earth bar

Substation

526-2

524-1 & 2 or

Assy Selection

Assy 525-1 & 2

(refer note 4)

Assy 526-1

Assy 525-1

A

of note 5

shall be as per requirements

Separation between earth rods

Additional earthing as req’d.


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED


ABN 50 087 646 062Dwg Sh

FILE: 5


EARTHING

5014


Connection L.V. earth to earth bar



1

1

5

1.

2.

MATERIAL - SEPARATE EARTH

ASSY

525-1

526-1

545-1


ASSY

524-1

524-2

525-2

DESCRIPTION

DESCRIPTION QTY

QTY



SEPARATE EARTH - MATERIAL

NOTES:

3.Refer sheet 3 for separate earthing modifications.


60 5014 11

4.1



2






1.



5/2/03

ADDITIONAL L.V. EARTHING:

ADDITIONAL H.V. EARTHING:

B 10.10.05

D

564-50

558-10 ï»¿Conduit bend H.D. 40 dia. 300R

Conduit UPVC 40dia. H.D. orange AR

C 28.04.14

C. Noel

A. Bletchly

T. Borg


- HV earth cable (site earth) = 15.0m

- HV earth rod = 15.0m

- LV earth rod or cable = 0.3m



- HVearth cable (site earth) = 0.3m


(conduit):


If required, Refer detail on sheet 2.

resistance to earth values shown. Refer design.

"Frequented" or "Special" sites - Earth system may require less than the

Extend conduit and bend 300mm beyond H.V. earth cable.

ï»¿L.V. earth cable in 40mm dia. heavy duty PVC conduit and 90î�� 300R

from the R.P. Street Alignment.

If required, locate in the Electricity Footpath Allocation at a minimum of 200mm

ground if necessary to achieve the required separation to communications.

Bury at 200mm deep and provide orange caution tape laid 100mm below

or

ground if required separation to communications is achievable;









D 23.05.16


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED


ABN 50 087 646 062Dwg Sh

FILE: 5



6

2



EARTHING



ASSY

525-1

526-1

DESCRIPTION QTY

QTYDESCRIPTIONASSY

524-1

524-2

525-2


5123





60 5123 11

2513-1 Connection earth bar to cover plate

AR

QTYDESCRIPTIONASSY

513-5

MATERIAL - PLATFORM EARTH



2






NOTES:

1.

2.

3.



communications.

below ground if necessary to achieve the required separation to


or

below ground if required separation to communications is achievable;




- Earth rod = 0.3m

(conduit):



- Earth rod = 2.0m





Connection earth bar to service platform

B

D

10.10.055/2/03

C 28.04.14

C. Noel

A. Bletchly

T. Borg






Refer design.


is required. Refer drawing No. 5125.

the earth grid is connected to the system MEN then separate LV earthing


D 22.10.15

over grading ring.

below ground. Provide orange caution tape laid 250mm below ground

cable (conduit) lay the section of grading ring on the footpath 500mm

If necessary to achieve the required separation to communications


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED


ABN 50 087 646 062Dwg Sh

FILE: 5


PLAN

FO

OTP

AT

H

-

-

F

FF

F

F

FF

FF

F

F

F

F

F

F

F

F

F

F

F

F

F

FF

EARTHING



Assy 525-2 Assy 525-1

Alignment

R.P.Street

Assy 525-1

6000 boundary

526-2

524-1 and 2 or

Assy selection


Additional earthing if required.

Additio

nal

4000 b

oundary

orange

tape

Caution

Boundary

Site

Earth Bar

Substation

Bar

L.V. Earth

MEN.

DISCONNECTED

10 ohm Max.

CONNECTED

500

250

SECTION A

A

5123

and 525-2

Assy 525-1

N

60 5123 22

EPM22/COM

EAU

EARU

EADDCU

Construction Type

(Additional)

(Additional Rod)


Assy 513-1

Assy 513-5

Earth Grid Earth Grid

Neutral Bar

F

Refer Note 1.

B

D

513-5

Assy

F

H.V.

F

F

L.V.513-1

Assy

F

Assy 513-5

Bar

L.V. Earth

F

Earth Bar

StationF

Assy 513-1

Assy 513-5 Assy 526-1

Assy 526-1

F

F

Earth Bar

Station

Assy 513-1

F

21.4.045/2/03

C 28.04.14

C. Noel

A. Bletchly

T. Borg

8.0

m Min. (R

od)

20.0

m Min. (D

eep Drilled)

Deep drill 2

0.0

m Min.

Earth rod 8.0

m Min.

(ref. note 2)

1 ohm Max.

F

F

300

F

F300

F

F

Line

Ground

1390

F

F

300

F 1800F

D 15.06.15


A ORIGINAL ISSUE

DRAWN

DATE

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APPROVED


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FILE: 5



6

2



EARTHING



ASSY

525-1

526-1

DESCRIPTION QTY

QTYDESCRIPTIONASSY

524-1

524-2

525-2





1


AR

QTYDESCRIPTIONASSY

513-5




NOTES:





C. Noel

A. Bletchly

Refer design.


is required. Refer drawing No. 5125.

the earth grid is connected to the system MEN then separate LV earthing



534160 5341 1L. Burton

25/8/15

COMMON EARTH - MATERIAL - COMMUNITY TITLE


- Earth rod = 0.3m

(conduit):



- Earth rod = 2.0m





1.

2.

shall be minimum 40m

the depth of the drilled hole. E.G. for 20m hole spearation

The separation between earth rods shall be at least twice





35mm† bare copper cable deep drilled to moisture.






below ground.


3.

be spaced min 4.0m.

2 x earth rods depth from previous rods. E.G. Single earth rods shall

Additional earth rods should be installed with minimum separation of

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED


ABN 50 087 646 062Dwg Sh

FILE: 5


PLAN

FO

OTP

AT

H

-

F

F

F

FF

F

F

F

EARTHING


Assy 525-1A

2

H.V.

F

F

L.V.F

Assy 513-5

F

F

Assy 513-1

Assy 513-5 Assy 526-1

Assy 526-1

F

F

C. Noel

A. Bletchly


L. Burton

26/8/15

4600 b

oundary

Alignment

R.P.Street

526-2

524-1 and 2 or

Assy selectionBoundary

Site

and 525-2

Assy 525-1

513-1

Assy

Bar

L.V. Earth

Earth Bar

Station

COMMON EARTH - COMMUNITY TITLE

Refer sheet 3 for Section A.

6700 boundary

300

300

400

300

534160 5341 2

be as p

er re

quire

ments of note 3.

Separation b

etw

een e

arth rods s

hall

Additio

nal earthin

g as required.

F

FF

MEN.

DISCONNECTED

10 ohm Max.

N


Neutral Bar

(ref. note 2)

1 ohm Max.

Earth Bar

Substation

Bar

L.V. Earth

CONNECTED

1100

2100

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED


ABN 50 087 646 062Dwg Sh

FILE: 5


-

EARTHING


Assy 525-2 Assy 525-1

SECTION A

EPM22/COM

EAU

EARU

EADDCU

Construction Type

(Additional)

(Additional Rod)


Assy 513-1

Assy 513-5

Assy 513-1

C. Noel

A. Bletchly

L. Burton

26/8/15

G.L.

Earth Bar

Station

Orange

Caution Tape

Assy 513-5

250500

COMMON EARTH - COMMUNITY TITLE

Refer sheet 2 for plan view

360 5341 3

5341


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED


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FILE: 5


NOTES:

EARTHING


1.

2.

Earth - deep drilled

Earth rod additional depth


AR

1

1

7

MATERIAL - SEPARATE EARTH

ASSY

525-1

526-1

545-1


ASSY

524-1

524-2

526-2

DESCRIPTION QTY

QTYDESCRIPTION

5125

SEPARATE EARTH - MATERIAL



Connection L.V. earth to earth bar

3.Refer sheet 3 for separate earthing modifications.

60 5125 11

AR

QTYDESCRIPTIONASSY

513-5



1

4.



2








5/2/03


B

D

ground if necessary to achieve the required separation to communications.


or

ground if required separation to communications is achievable;


- HV earth cable (site earth) = 15.0m

- HV earth rod = 15.0m


cable pits/manholes, payphones or miscellaneous earths:

Provide the following minimum separation to communications pillars/cabinets,

from the R.P. Street Alignment.

If required, locate in the Electricity Footpath Allocation at a minimum of 300mm

Extend conduit and bend 300mm beyond H.V. earth cable.

ï»¿L.V. earth cable in 40mm dia. heavy duty PVC conduit and 90î�� 300R

resistance to earth values shown. Refer design.

"Frequented" or "Special" sites - Earth system may require less than the

- HVearth cable (site earth) = 0.3m


Provide the following minimum separation to communications cable (conduit):

If required, Refer detail on sheet 2.

ADDITIONAL L.V. EARTHING:

ADDITIONAL H.V. EARTHING:

10.10.05

564-50 Conduit UPVC 40 dia. H.D. orange

558-10 ï»¿Conduit bend H.D. 40 dia. 300R

AR

C. Noel

A. Bletchly

T. Borg

C 28.04.14






D 23.05.16

grading ring.

ground. Provide orange caution tape laid 250mm below ground over

(conduit) lay the section of grading ring on the footpath 500mm below

If necessary to achieve the required separation to communications cable


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED


ABN 50 087 646 062Dwg Sh

FILE: 5


PLANF

OO

TP

AT

H

F

F

F

F

F

F

F

F

F

F

EARTHING


SEPARATE EARTH ARRANGEMENT

Assy 525-1

LV E

arth

if required.

Additio

nal

4000 b

oundary

526-2

524-1 and 2 or

Assy selection

Alignment

R.P.Street

6000 boundary

L.V.

Bar

Neutral N

CONNECTED

(ref. note 2)

10 ohm Max.

5125

Assy 526-1

Assy 525-1 2 700

F

F

Bar

LV Earth

Bar

Main Earth

F

F

H.V.

F

F

EPM22/SEP

EAU

EARU

EADDCU

Construction Type

(Additional)

(Additional Rod)


60 5125 22

545-1

Assy

F

Assy 513-1

F

MEN.

DISCONNECTED

10 ohm Max.

F

F

F

F

Deep drill 2

0.0

m Min.

Earth rod 8.0

m Min.

F

F

F

Grid

Earth

Earth

L.V.

513-1

Assy

F

Assy 513-5

F

barrier kerb

Outline of concrete

5/2/03

Refer note 1F

35mm

hard drawn

Cable, PVC

B

D

F

Earth Bar

Station

F

Assy 513-5

526-2

524-1 and 2 or

Assy selection

F

FF

F

F

to earth cable/rod/deep drill hole.

Provide min.2.0m from site side & rear boundries

PADMOUNTED SUBSTATIONS dwg No. 5177.

Confine within clearance zone as shown in

Additional HV earthing if required shown thus.

10.10.05

2.2

mif required

Additio

nal

Min.

300

300

300 Min.

Assy 558-10

F

Refer note 4

Assy 564-50

C 06.05.14

C. Noel

A. Bletchly

T. Borg

8.0

m Min. (R

od)

20.0

m Min. (D

eep Drill)

D 23.05.16

F

F2100


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED


ABN 50 087 646 062Dwg Sh

FILE: 5


22/11/01

1

Assy 552-2

EARTHING

5125

ASSY

552-2

MATERIAL

DESCRIPTION QTY

SEPARATE EARTHING MODIFICATIONS

Attach CAUTION label Assy 552-3 to inside face of LV door.

WARNING

EARTHINGSEPARATE HV & LV

TO THIS TRANSFORMER

NOT BE USED ADJACENT

240V APPLIANCES MUST

NOT BE REPLACED BY A GPO

THIS WARNING NOTICE MUST

FRAME TO ANY METALLIC SURFACE

CLEARANCE FROM TRANSFORMER

MAINTAIN A TWO METRE MIN.

1552-3

Warning label

Caution label

Neutral Bar

required and the following modifications shall be made.

earth value is not achieved, separate LV earthing is

Where the specified combined HV and LV resistance to

Neutral Bar

F

F

60 5125 33

22kV AND LV CABLE CONNECTION AND GPOB 30.06.15

B

C. Noel

A. Bletchly

T. Borg

Connect LV earth (insulated cable) to LV Earth Bar.

Station Earth Bar.

HV earth (bare cable) is to remain connected to the

1.

2.

3.

4.

5.

Remove link between station earth bar and LV earth bar.

F

label Assy 552-2 near GPO mounting position.

insulating panel to cover openings and fit WARNING

Remove lights and make wiring safe. Install

from frame

insulated

LV Earth Bar

F


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23/05/16EARTHING

5125

SEPARATE EARTHING MODIFICATIONS

C. Noel

A. Bletchly

T. Borg 460 5125 4

22kV PADMOUNT SUBSTATION

SECTIONLV

SECTIONTRANSFORMER

TRANSFORMER FRAME LV FRAME

RM6 MV SECTION

RM6 FRAME

KIOSK EARTH BAR

F

Refer note 1, sheet 3.Link to be removed.


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1

1.

524-2

524-1

ASSY


505-1

ASSY


DESCRIPTION QTY

DESCRIPTION QTY

EARTHING

5085

ELECTRICITY SUPPLY PILLAR AND

DISTRIBUTION CABINET

1505-2

Earth MEN to LV pillar

2.

NOTES:

60 5085 1

5/2/03

1.


B 10.09.14

D

C. Noel

A. Bletchly

T. Borg

- 2 & 6 module or Flood zone pillar

Earth MEN to LV distribution cabinet

C 15.06.15

LV connected resistances apply at all locations.

1

3.

f

f

f

f

F

f

F

F

F

F

Finished Ground Line

Caution Tape

250

4.0m Min. (Single rod)

8.0m Min. (Double rod)

N

End of feeder - 10 ohm Max.

Elsewhere - 30 ohm Max.

L.V. DISCONNECTED

Min

500

524-1 and 2

524-2 or

Assy Selection

505-1 or 2

Assy Selection

(shown)

Electricity Supply

Pillar (tall)

Common MEN System - 1 ohm Max.

Separate MEN System - 10 ohm Max.

- Distribution Cabinet

- Commercial and Industrial Pillar

- Linking Pillar

An earth must be fitted at every:

customer’s switchboard.

circuit, but be no further than 180m from the furthermost

An earth must be fitted at every 4th supply pillar on a

pillars are not normally earthed.

radial feed of the main’s cable. 240mm† Al. crossroad

An earth must be fitted at the end supply pillar of each

allocation at a minimum 200mm from the R.P. street alignment.

All earthing shall be located in the electricity footpath

EMEN

EAU

EARU (Additional Rod)

(Additional)

Construction Type

23.02.17D

L.V. CONNECTED

if required (refer note 4)

Additional earthing

refer Standards Section.

For separation from other communications assets


miscellaneous earths:

cable pits/manholes, payphones or

communications cable (conduit), pillars/cabinets,

Provide the following minimum separation to

4.

however can be just the earth cable buried in the trench.

Additional earthing can include additional earth electrodes,


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EARTHING

529460 5294 2

11/22kV RING MAIN UNIT

SEPERATE EARTH ARRANGEMENT

C. Noel

29.04.14

A. Bletchly

T. Borg 2

PLAN

FO

OTP

AT

H

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

F

Grid

Earth

Assy 526-1

526-2

524-1 and 2 or

Assy selection

Alignment

R.P. Street

100

Assy 525-1

100

3000 b

oundary

100

100

2800 boundary

100CONNECTED

and 525-2

Assy 525-1

ERMU22/SEP

EAU

EARU

EADDCU

(Additional)

(Additional Rod)


Construction Type

surround slab

Outline of concreteF

2.0

m

if required

Additio

nal

FEarth Bar

Switchgear

ERMU11/SEP

Assy 526-1

875F

F100

715

F250

(ref. note 1)

10 ohm Max.


B 05.08.14

B

edge beam

under concrete

Earth grid

Assy 525-1

Assy 525-2

SECTION A

-

200

100

Assy 526-1

orange

Caution tape

Assy 526-1

boundaries to earth cable/rod/deep drill hole.

Provide min. 2.0m from site side & rear

HV SWITCHGEAR dwg No. 5290.

Confine within clearance zone as shown in

Additional HV earthing if required shown thus.

A

-

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6

2

AR

EARTHING


ASSY DESCRIPTION QTY

QTYDESCRIPTIONASSY

525-2




1



2






NOTE:

1.




C. Noel

A. Bletchly

T. Borg






Refer design.


535360 5353 1

22/11kV PADMOUNTED AUTO TRANSFORMER05.02.16


- Earth rod = 0.3m

(conduit):


524-2

524-3

Earth rod additional depth

Earth rod additional - suit 70mm† cable

526-4 Earth - deep drilled to suit 70mm† cable

525-3 Earth Padmounted Auto Transformer

526-3 Connection grid to earth bar - 70mm† cable

earth cable / rod / deep drilled hole.

Provide minimum 2.0m from site side and rear boundaries to

clearance zone as shown in Padmounted Substation drawing no. 5357.

Additional earthing if required shall be as per sheet 2. Confined within


- Earth rod = 15.0m




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PLAN

-

F F

F

F

EARTHING


Earth Bar

Substation

10 ohm Max.

SECTION A

2

EAU

EARU

EADDCU

Construction Type

(Additional)

(Additional Rod)



C. Noel

A. Bletchly

T. Borg 535360 5353 2

05.02.1622/11kV PADMOUNTED AUTO TRANSFORMER

F

F

F

F


Additional earthing

7000 boundary

Line

Ground

500

250

F

F

F

orange

tape

Caution

F

F

FO

OTP

AT

H

-

A

6000 b

oundary

Assy 525-2 Assy 525-3

526-2

524-2 and 3 or

Assy selection

and 525-2

Assy 525-3

F

Assy 525-3

F

Assy 526-3

Earth Bar

Substation

CONNECTED

(ref. note 1)

barrier kerbOutline of concrete

EPM22-11


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Documents

Underground Construction Manual Issue 12 - ergon.com.au · CONSTRUCTION MANUAL ... d d it io n a l if r e q ’d. 8.0 m M in. (R o d) 2 0.0 m M in. (D e e p D ri ll e d) (ref. note