09 HV Switchgear

UNDERGROUND CONSTRUCTION MANUAL

HV SWITCHGEAR Go to SECTION INDEX Back to MAIN INDEX

DESCRIPTION DWG

INDEX

31/5/11

62 5254 1 1

5229/1

5229/3

CONSTRUCTION CONSTRUCTION DESCRIPTION DWG

5234/1

5229/2

HARD COPYUNCONTROLLED

HV SWITCHGEAR

C. Noel

A. Bletchly

L. Burton

Construction code guide - Foundation & site finishConstruction code guide - 22kV Ring main unit

Construction code guide - 11kV Ring main unit

Location in council parklandsLocation in council parklands 5234/2

Location in residential allotments 5233

5230

Outdoor RMU with precast concrete fdn -Site finish concrete suround

5217

RING MAIN UNIT

5232/15232/2

Culvert Foundation details - MaterialCulvert Foundation details - Construction

11RMU/ASL

5236/15236/2

ABB 11kV ring main unit Safelink - Material11RMU/O/ASL2S1F11RMU/O/ASL2S2F

11RMU/O/ASL3S1F11RMU/O/ASL3S

11RMU/O/ASL4S

ABB 11kV ring main unit Safelink -Construction

Site preperation sloping site - Maximum cut & fill

5237/1

5237/2

5238/15238/2

5253/1ABB 11kV Safeplus / Safering - HV switchgear schematic

ABB 11kV Safeplus / Safering - Material

5243/15243/2

22RMU/O/FGA2S1F F & G 22kV ring main unit - MaterialF & G 22kV ring main unit - Construction22RMU/O/FGA2S2F

22RMU/O/FGA3S1F

22RMU/O/FGA2S1CB

22RMU/O/FGA3S

22RMU/O/FGA4S22RMU/O/FGA1S1CB1F22RMU/O/FGA1S1CB2F

5252/15252/2

F & G 22kV ring main unit - SchematicF & G 22kV ring main unit - Schematic

5252/3F & G 22kV ring main unit - Schematic

ABB 11kV Safelink - HV switchgear schematic

ABB 11kV Safelink - HV switchgear schematic

ABB 11kV Safeplus / SaferingConstruction

5255/1Ring main unit installation5255/2Ring main unit installation5255/3Ring main unit installation5255/4Ring main unit installation

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED

Ergon Energy Corporation LtdABN 50 087 646 062 Dwg ShFILE: 5

UNDERGROUND DISTRIBUTION

5217

C.Lindsay

23/11/01

62 5217 1

SITE FINISH CONCRETE SURROUNDOUTDOOR RMU WITH PRECAST CONCRETE FDN

F

30

00

F

F 2800F

Concrete EdgeBeam

F

Fall

F

F

FFall

Fall

F

F

surround slab cast

F

SiteBoundary(Level Site)

A_

PLAN

FO

OT

PA

TH

AlignmentR.P. Street

F

Reinforced concrete

around plinth

between plinth andAbelflex sealant joint

concrete slab

NOTES:

2. Reinforced concrete surround slab: a) 100/125mm thick slab: b) 11 TM trench mesh reinforcement in centre of slab: c) 25 MPa grade concrete: d) Finish by wood float or by nylon broom.

4. The concrete slab is to slope away from plinth falling at a slope of 1 in 25.

5. Cable apertures through the precast concrete plinth shall be backfilled to 50mm from the top of plinth. A 30mm deep layer of 1:16 ratio weak mix concrete shall be placed to seal aperture.

6. The surface of the surround slab may be finished with a stencil pattern surface to match the surrounding pavements of the development. (Use Textcrete or equivalent product. Construct to suppliers specifications).

3. The top face of the concrete surround slab shall be 100mm Min. above the final surface level (when turf is laid).

LineGroundFinished

_

SECTION ABackfillCable PitRefer note 1.

F

Earth grid underconcrete edge beam

FallF

FFall

50 F

F

F

F100

Min

.

F

F

HV SWITCHGEAR

_

SECTION B

Concrete edge beam to perimeter 150 wide x 150 deep below finished surface.Foundation

Finish ground line

_

B

F

C. Noel

A. Bletchly

F

Construction Type

11RMUF/ASL

Pre-cast foundation

1. Backfill Cable Pit with bedding sand and compact in place. Refer TRENCHING Drawing No. 5227.

B 02.11.11

B

Refer Note 7

F

F

F

7. Concrete slab to be cast in separate sections on side/s where cables enter/exit to allow future access. Provide Abelflex between sections and around plinth.


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



EXAMPLE:-

CONSTRUCTIONSVOLTAGE

CONSTRUCTION CODE GUIDE

Code shown within dashed boxappears on relevant constructiondetail drawings in this manual.

A

522962 5229 1T.Borg

11kV RING MAIN UNIT CONSTRUCTION CODE

11 RMU/O/ASL 2S1F

11 = 11kV RMU = Ring Main Unit

LOCATION

O = Outdoor

HV SWITCHGEAR

ASL = ABB SafeLink

ASP = ABB SafePlus

ASR = ABB SafeRing

CONFIGURATION

2S1F = 2 switch + 1 fuse


3S = 3 switch

4S = 4 switch


1S1CB1F = 1 switch + 1 circuit breaker + 1 fuse

1S1CB2F = 1 switch + 1 circuit breaker + 2 fuse

2S1CB = 2 switch + 1 circuit breaker

11RMU/O/ASL2S1F = 11kV, Ring Main Unit, outdoor, ABB SafeLink, 2 switches + 1 fuse.

C. Noel

A. Bletchly

111kV RING MAIN UNIT

9/9/10HV SWITCHGEARHARD COPY

UNCONTROLLED

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED




5229 262 5229 2

C. Noel

A. Bletchly

EXAMPLE:-

Required only where foundationis not provided by others.


A

FOUNDATION AND SITE FINISH

3/5/11

RING MAIN UNIT FOUNDATION & SITE FINISH CONSTRUCTION CODE

11 RMUF / ASL

11 = 11kV

VOLTAGE RMU FOUNDATION

RMUF = Ring Main Unit Foundation

HV SWITCHGEAR

ASL = ABB Safelink

11RMUF/ASL = 11kV, Ring main unit foundation, ABB Safelink

L. Burton

HV SWITCHGEARHARD COPYUNCONTROLLED

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



EXAMPLE:-

CONSTRUCTIONSVOLTAGE



A

5229 362 5229 3T.Borg

22kV RING MAIN UNIT CONSTRUCTION CODE

22 RMU/O/FGA 3S1F

22 = 22kV RMU = Ring Main Unit

LOCATION

O = Outdoor

HV SWITCHGEAR CONFIGURATION


FGA = Felton & Guillaume (F&G) 1S1CB1F = 1 switch + 1 circuit breaker + 1 fuse1S1CB2F = 1 switch + 1 circuit breaker + 2 fuse

2S1CB = 2 switch + 1 circuit breaker


3S = 3 switch


4S = 4 switch

22RMU/O/FGA3S1F = 22kV, Ring Main Unit, outdoor, Felton and Guillaume (F&G), 3 switches + 1 fuse.

C. Noel

A. Bletchly

22kV RING MAIN UNIT

9/9/10HV SWITCHGEARHARD COPY

UNCONTROLLED

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



FO

OT

PA

TH

NOTES:

PLAN

L. Burton

MAXIMUM CUT & FILL

(shown dashed)

30

00

800

A_

FIL

L

100

MA

X

R.P. StreetAlignment

_

150

MA

X

CU

T

2800

SECTION A

2. Ergon Energys 3000mm x 2800mm (minimum) site shall be levelled and surrounding area graded to ensure NO PONDING of water occurs.

523062 5230 1

8.3.11 SITE PREPARATION SLOPING SITE

Outline of RMU foundation over

1. Refer drawing 5226 for installation requirements.

3. No services other than the Ergon Energys electric cables shall pass through this RMU site.

4. Clear access to the RMU shall be maintained for Ergon Energys personnel & heavy equipment.

6. Mature landscaping (including trees, sprinklers etc) shall not encroach onto the RMU site.

7. The finished surface of the adjacent footpath, in front of the RMU cabinet, shall be level to ensure that the cabinet doors will swing into the fully open position.

FF

F

F

F

F

F

F

F

F

F

F

F


= =

==

SiteBoundary

F

5. After installation is complete the site surface is to be finished with a concrete slab. (Refer drawing 5217).

HV SWITCHGEAR

A.Bletchly

C.Noel


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



NOTES:

B 1/2 DISC

L. Burton

1. Foundation design details are as follows:1

ASSY QTYDESCRIPTIONMATERIAL

1523262 5232 1

583-2 CulvertUnstable soils are soft clay to sandy gravel with a soil strength 50-150 kPa. Stable soils are very stiff clay to shale/rock with soil strength of150kPa or higher.

2. Lift the culvert separately with 4 x 1.3 tonnes Reid Swiftlift lifting eyes.

3. Position the top face of the culvert at the finished ground level of the site, as detailed on the Projects Civil Construction drawings.4. Do NOT remove the culvert end wall knockouts.

5. The culvert shall be constructed level. Under no circumstances shall it be allowed to tilt forward towards the footpath.

7. Refer drawing No. 5217 for site finish concrete surround.

CULVERT FOUNDATION DETAILS

A. Bletchly

C. Noel

4/5/11

MATERIAL


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton 523262 5232 1

8.3.11

C. Noel

A. Bletchly

F

_

SECTION A

B_

=

=

A_

3000 S

ite

Compact pit sandSECTION B

_

PLAN

Backfill with approvedsuitable material andcompact in place


2800 SiteF

F

FF

FFF

F

SiteBoundary

F

Finished GroundLine (Site)

Cableentry

Assy 583-2

Footpath

F

Precast concreteplinth suppliedwith RMU

F

F

HV cables

F

F

F

F

F

StableUn-stable100

50

F

F

1180 S

table

12

80

Un

stab

le

2

Construction Type

11RMU/ASLF

F

F

F= =

CULVERT FOUNDATION DETAILSCONSTRUCTION


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton 523362 5233 1

8/3/11

C. Noel

A. Bletchly

F

F

FO

OT

PA

TH

R.P. StreetAlignmentF

6000

F

F

30

00

NOTE:

Real Property Boundary

F

F2800

Dwelling

Dwelling

As

Req

dA

s R

eqd

FF

FF

Ring main units may be in 1 or 2 allotments

F

A reduction in dwelling setbackof 6000mm from the R.P. StreetAlignment will require relocationof the ring main unit to an alternative site to achieve the acceptable separation.

LOCATION IN RESIDENTIAL ALLOTMENTSHV SWITCHGEARHARD COPY

UNCONTROLLED

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton 523462 5234 1

C. Noel

A. Bletchly

10.3.11

NOTES:

Parklands

1.

2.

3.

2.5m Min.

2.5

m M

in.

4.

Apron

PLAN

Dwelling

Real PropertyBoundary

1.5m Min.


FOOTPATH

Kerb

ROAD2.0

m

F

F

F

F

F

F

F

F

F

F

F

F

F

F

Dwelling

1.5

m

Min

.

F

F

SiteBoundary

As Reqd

3.0m

Away from residential dwellings and surroundingproperties to minimise visual and sound impact;

As close as possible to the road kerb to allow 24 hourall weather access for personnel, a coventional craneand heavy equipment.

ReferNote 4

ReferNote 4

F

F

F

F

RMU SET BACK FROM R.P. STREET ALIGNMENT

When planting vegetation in parklands, ensure vegetationdoes not encroach on the ring main unit site.Take into consideration the fully matured size of vegetationto allow continuing access to the site.

A ring main unit in parkland shall be located:

The location of ring main unit sites is based on acceptable separation to adjacent dwellings located as shown. Any reduction in the 1.5m minimum dimension shown on the drawings requires a corresponding relocation of the ring main unit site to maintain the acceptable separation.

LOCATION IN COUNCIL PARKLANDS

A 3.0m wide cable and access easement or road reserveshall be provided between the ring main unit site and the R.P. Street Alignment.

1


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton 523462 5234 2

C. Noel

A. Bletchly

10.3.11

FOOTPATH

ROAD

Parklands

Kerb

PLAN

Dwelling


6.0m Min.

F

SiteBoundary

F

F

F

F

F

As Reqd


FOOTPATH

ROAD

Parklands

Kerb

PLAN

Dwelling

F

SiteBoundary

F

F

F

F

F


Less than6.0m

2.5m Min.F

F

1.5mMin.

F

F

Refer Note 4Sheet 1.


RMU ADJOINING R.P. STREET ALIGNMENT

LOCATION IN COUNCIL PARKLANDS

2


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton

ASSY DESCRIPTIONQTY

NOTES:

10/3/11

567-9

62 5236 1 5236

C. Noel

A. Bletchly

567-1

567-5567-3

567-7

555-4555-5555-7555-8555-9555-10

11kV ABB safelink 2 switch 1 fuse c/w cubical and plinth



11kV ABB safelink 3 switch c/w cubical and plinth

11kV ABB safelink 4 switch c/w cubical and plinth

1

2S1F 2S2F 3S1F3S 4S

1.

2.

The gland plates supplied with the units are not required to be fitted on the ground mounted RMU

3.

The HV cables must be clamped to the unistrut provided as per construction standards and the opening on the plinth for cable entry must be filled with a weak concrete mix and compacted

MATERIAL - FREESTANDING RING MAIN UNIT

ASSY DESCRIPTION QTY

3

1

1

1

1

1MATERIAL

MATERIAL - HV FUSE - EACH CIRCUIT

Refer note 1

555-2 Cartridge fuse link 10A HRCCartridge fuse link 20A HRC

Cartridge fuse link 25A HRC





Designer to nominate HV fuse link current rating

CONTRACT No. 2008 / 024 / T

ABB 11kV RING MAIN UNIT SAFELINKHV SWITCHGEARB 24.11.11

B

4.

Designer to nominate the position(s) of the outgoing cable circuits (Refer dwg 5237 for schematic) as follows:* Radial feeders - switch disconnector(s) provided with CFI unit(s)* Ring feeders - determine the circuit arrangement in consultation with system operations staff.


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton

10/3/11HARD COPYUNCONTROLLED

62 5236 2 5236

C. Noel

A. Bletchly


2

Construction Type

11RMU/O/ASL2S1F

11RMU/O/ASL2S2F

11RMU/O/ASL3S

11RMU/O/ASL3S1F

11RMU/O/ASL4S

Assy Selection567-1 to 9 and555-2 to 10

F

F

F

Concrete plinth

F

Refer HV CONSTRUCTION drawing no. 5244 or 5245 for feeder cable connections

Side View Plan

F

Lifting points4 x M12 ferrules

Lifting points4 x M12 ferrules

CONSTRUCTIONABB 11kV RING MAIN UNIT SAFELINKHV SWITCHGEAR

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton


62 5237 1 5237

C. Noel

A. Bletchly

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

F

2S1F 11kV ABB safelink RMU 2 switch 1 fuse

F

Note:

(CFI) on this switch disconnector unitRepresents circuit fault indicator

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

F


F

Note:


FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

F


FEEDERCABLE

F

F

Note:


1

ABB 11kV SAFELINK - HV SWITCHGEARSCHEMATIC

HV SWITCHGEAR

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton

10/3/11

62 5237 2 5237

C. Noel

A. Bletchly

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

F

F

Note:


2

F

FEEDERCABLE

F

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

F

F

Note:


F

4S 11kV ABB safelink RMU 4 switch 3S 11kV ABB safelink RMU 3 switch

ABB 11kV SAFELINK - HV SWITCHGEARSCHEMATIC


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton 62 5238 1 5238

C. Noel

A. Bletchly

ASSY DESCRIPTIONQTY

NOTES:

578-1

578-5578-3

1

1.


For circuit breaker setting refer to protection.

1S1CB1F 1S1CB2F 2S1CB

1

1

MATERIAL

9/5/11

1

11kV ABB safeplus RMU 1 switch 1 circuit breaker 1 fuse c/w cubical and plinth

11kV ABB safeplus RMU 1 switch 1 circuit breaker 2 fuse c/w cubical and plinth

11kV ABB safering 2 switch 1 curcuit breaker c/w cubical and plinth

ABB 11kV SAFEPLUS / SAFERINGHV SWITCHGEARB 24.11.11

B

2. Designer to nominate the position(s) of the outgoing cable circuits (Refer dwg 5253 for schematic) as follows:* Radial feeders - switch disconnector(s) provided with CFI unit(s)* Ring feeders - determine the circuit arrangement in consultation with system operations staff.


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton


62 5238 2 5238

C. Noel

A. Bletchly

9/5/11

2CONSTRUCTION

Assy Selection 578-1, 3 or 5

F

Lifting point

F

Lifting point

F

Lifting point

FF

ABB 11kV SAFEPLUS / SAFERINGHV SWITCHGEAR

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton

ASSY DESCRIPTIONQTY

16/3/11

579-9

62 5243 1 5243

C. Noel

A. Bletchly

579-1

579-5579-3

579-7

579-11

1

2S1F 2S2F 3S1F3S 4S



CONSTRUCTION

22kV F&G 2 switch 1 fuse c/w cubical & plinth

579-13579-15



22kV F&G 3 switch c/w cubical & plinth

22kV F&G 4 switch

22kV F&G 1 switch 1 circuit breaker 1 fuse c/w cubical & plinth

22kV F&G 1 switch 1 circuit breaker 2 fuse c/w cubical & plinth

22kV F&G 2 switch 1 circuit breaker c/w cubical & plinth

1S1CB1F 1S1CB2F 2S1CB

1

1

1

1

1

1

1

NOTE:

1.

1

Designer to nominate HV fuse links

F&G 22kV

2. For circuit breakers refer to protection for setting

556-3556-4556-7

Cartridge fuse link 16A



3 6 3 3 6

QTY2S1F 2S2F 3S1F3S 4S 1S1CB1F 1S1CB2F 2S1CB

ASSY DESCRIPTION

MATERIAL - HV FUSE - EACH CIRCUIT

HV SWITCHGEARB 24.11.11

B

Designer to nominate the position(s) of the outgoing cable circuits (Refer dwg 5252 for schematic) as follows:* Radial feeders - switch disconnector(s) provided with CFI unit(s)* Ring feeders - determine the circuit arrangement in consultation with system operations staff.

3.


A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton


62 5243 2 5243

C. Noel

A. Bletchly

HV SWITCHGEARF&G 22kV RING MAIN UNIT


Construction Type

CONSTRUCTION

22RMU/O/FGA2S1F

22RMU/O/FGA2S2F

22RMU/O/FGA3S1F

22RMU/O/FGA2S1CB

22RMU/O/FGA3S

22RMU/O/FGA4S

22RMU/O/FGA1S1CB1F

22RMU/O/FGA1S1CB2F

Assy Selection579-1 to 15 and556-3 to 7

F

Refer HV CONSTRUCTION drawing no. 5044 for feeder cable connection

2

9/5/11

Lifting point

F F

Lifting point

Lifting point

F

F

F

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton


62 5252 1 5252

C. Noel

A. Bletchly

HV SWITCHGEAR

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

F

F

Note:


FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

F

Note:


FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

F

Note:


1SCHEMATIC

9/5/11F & G 22kV RING MAIN UNIT

2S1F 22kV F & G ring main unit

2 switch, 1 fuse


2 switch, 2 fuse


3 switch, 1 fuse

F F F

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton


62 5252 2 5252

C. Noel

A. Bletchly

HV SWITCHGEAR

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

F

Note:


2

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

F

Note:


SCHEMATICF & G 22kV RING MAIN UNIT

4S 22kV F & G ring main unit

4 switch

3S 22kV F & G ring main unit

3 switch

F F F F

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton


62 5252 3 5252

C. Noel

A. Bletchly

HV SWITCHGEARF & G 22kV HV SWITCHGEAR

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

F

Note:


F

Note:


F

Note:

Represents circuit fault indicator

F

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

F F

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

3

9/5/11

1S1CB1F 22kV F & G ring main unit

1 switch, 1 circuit breaker, 1 fuse

(CFI) on this switch disconnector unit

1S1CB2F 22kV F & G ring main unit


2S1CB 22kV F & G ring main unit

2 switch, 1 circuit breaker

SCHEMATIC

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



L. Burton


62 5253 1 5253

C. Noel

A. Bletchly

HV SWITCHGEAR

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

F

Note:


F

Note:


F

Note:

Represents circuit fault indicator

F

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

F F

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

FEEDERCABLE

1

9/5/11

(CFI) on this switch disconnector unit

HV SWITCHGEAR - SCHEMATIC

1S1CB1F 11kV ABB Safeplus ring main unit


1S1CB2F 11kV ABB Safeplus ring main unit


2S1CB 11kV ABB Saferingring main unit

2 switch, 1 circuit breaker

ABB 11kV SAFEPLUS / SAFERING

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



1 SITE

INSTALLATION

General1.1

Stable (soil conditions)

Free from steep batters

Flood freeLevel (topography) where possible

1.4

1.2

1

1/6/11

Site Size

1.3

URD

Along coastal areas the site must be located as far as possiblefrom the shoreline and sheltered from salt spray.

Common earthing sitesLevel sites - 3000mm width x 2800mm depth.Retaining wall sites - 3400mm width x 3000mm depth.

The site shall be to the satisfaction of Ergon Energy, including

A site should not be located where impact by traffic is likely and,if at a truncated section of the street alignment or other non-regular shaped site the following shall apply:

The specified rectangular size of the site shall not be reduced.

a) In the Road Reserve:-

The Developer shall obtain all necessary approvals from theDepartment of Transport or the Local Authority.

b) On Freehold property (including residential or parkland):-

The Developer shall provide Ergon Energy with a registeredeasement at no cost to Ergon Energy.


L. Burton

A. Bletchly

C. Noel

62 5255 1 5255

HV SWITCHGEARRING MAIN UNIT

The minimum area required to accommodate a ring main unitshall be:

Ring Main Unit Orientation

The developer shall provide a ring main unit site(s) asrequired by Ergon Energy at no cost to Ergon Energy. The site shallbe included in the road reserve, or located on freehold property.No ring main units are to be located in Trustee Reserves.

Where the developer required the ring main unit to be included:

Acceptable separation of ring main unit to adjacent dwellings is provided if the front of dwellings are set back 6.0m from the R.P. Street Alignment and the padmount is located as shown in drawings No. 5233, 5234 Sheets 1 or 2.

Developments including streets where the allowable dwelling set back is less than 6.0m will require ring main unit siting on either an alternative street, where the dwelling set back is 6.0m, or in Parklands.

RING MAIN UNIT INSTALLATION

Free from other services

The front edge of the ring main unit shall be as near to parallel as possible to the R.P. Street Alignment.

Ring main units shall be oriented such that the HV panels are easily accessible from the dedicated footpath.

A ORIGINAL ISSUE

DRAWN

DATE

PASSED

APPROVED



2

1 SITE

1.5

(CONTD)Commercial and Industrial or Landscaped Areas

1.6 Parklands - for other than URD

1.7

Cabling Only

Cabling and Access

2 SITE PREPARATION

Sites shall be prepared in accordance with the includedconstruction drawings.

3 CONSTRUCTION OF RETAINING WALLS

4

4.1 Uniculvert

Cabling and Access Requirement

A 3.0m wide easement, or road reserve, from the front ofthe site is required for cabling and access.

62 5255 2 5255

HV SWITCHGEAR

INSTALLATIONRING MAIN UNIT

1/6/11

C. Noel

A. Bletchly

L. Burton

Whether the ring main unit is for the sole use of thatcomplex, or is required as part of the distribution network, theowner is required to grant Ergon Energy an easement for thering main unit site, access and cabling.

Obtain the necessary approval for an easement to accommodate the ring main unit, cabling and access to site.

Acceptable separation of ring main unit to adjacent dwellings isshown in drawings No. 5234 Sheets 1 & 2.

Should the cabling route not be available in conjunction withaccess, a 1.0m wide cable easement is required to the frontof the ring main unit. Additionally 2.0m x 3.0m (ring main unit site width) is required immediately in front to allow spreading ofcables for entry to the ring main unit and also include the buriedearth cable.

Retaining walls shall be constructed around the perimeter of aring main unit site where:

A change in ground level of 300mm or more occurs within 2.0mof the boundary of the ring main unit site.

RING MAIN UNIT FOUNDATION

Separation of 5.0m between ring main unit and thenearest room or habitable area should be providedwhere possible.

Uniculvert foundations shall not be constructed where site andground conditions do not provide an even or equal bearingcapacity for the ring main unit.

Uniculvert foundations for stable soil conditions shallbe constructed in accordance with Drawing No. 5232.


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4 (CONTD)Unstable SitesWhere sites are very unstable, and conventional foundationconstruction techniques as described in this document cannotbe applied, a special design shall be required.

5 BACKFILLING AND FINAL SITE FINISH

5.1 Common Earthing Sites

6

6.1

ADDITIONAL REQUIREMENTSCommercial and Industrial Installation

All backfill of the site must be compacted before final site finish inaccordance with the applicable drawing.

Easy access for a mobile crane must be available for the purpose ofinstallation or replacement.

Ergon Energy cable conduits for the development may be placed inthe substation site and shall pass down the sides of the uniculvertfoundation. No conduits shall pass through or under the uniculvertfoundation. Conduits shall be 750mm minimum depth below thefinished surface level. The substation site surface is to be finishedwith a concrete slab (refer to drawing No. 5004). The 2.0m apron infront of the substation cabinet shall be finished with a concrete slabsectioned with construction joints for ease of future removal.

6.2

An additional 2.0m apron shall be provided in front of, and for thefull width of the site (ie 4.8m depth). This will provide a safeworking platform and access around latched open doors foremergency operations.

C. Noel

A. Bletchly

1/6/11

L. Burton 26 5255 3 5255

RING MAIN UNIT FOUNDATION

In such circumstances, the developer shall obtain a certifieddesign from a Civil Engineer (RPEQ) for Ergon Energysconsideration. No special designs for ring main unitfoundation construction shall be used without the approval ofErgon Energy.

The preferred location of ring main unit sites atcommercial and industrial developments is at the real propertystreet alignment. Switchgear cabinet doors shall face theadjoining footpath.

Ring main units shall be located on the development inareas where clear, all weather access is provided for personneland heavy equipment at all times.

Ring Main Units in Landscaped AreasWhere the ring main unit is located in a landscapedarea (gardens) the following shall apply:

The ring main unit site surface is to be finished with a concrete slab(refer to drawing No. 5217).

The 2.0m apron in front of the ring main unit site shall be finished witha concrete slab sectioned with construction joints for ease of futureremoval.


4.2

Sealing of the cable apertures in the precast concrete plinthand construction of the concrete surround slab over theground surface shall be in accordance with drawing No. 5217.

Should the site be located in restricted areas such as carparks and between buildings, an additional minimum 2.0m of clear access shall be provided in front of, and for the full width of the site (ie 4.8m depth). This will provide a safe working platform and access around latched open doors for emergency operations.


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6.2 (CONTD)

6.3

7

Ring Main Unit in Landscaped AreasWhen planting vegetation in landscaped areas and gardens,ensure vegetation does not encroach on the ring main unitsite. Take into consideration the fully matured sizeof vegetation to allow continuing access to the site.

Ergon Energy cable conduits for the development may beplaced in the ring main unit site and shall pass down the sidesof the uniculvert foundation. No conduits shall pass throughor under the uniculvert foundation. Conduits shall be 750mmminimum depth below the finished surface level.

Ring Main Units Installation in ParklandsWhere the ring main unit is located in CouncilParklands, the installation shall be in accordance with therequirements of drawing No. 5234 Sheets 1 or 2.A 2.0m apron as specified in Clause 6.2 shall be provided.

No buildings/residences, fences, including their foundations, LVswitchboard earths, or metalic objects are permitted within theclearance zone around the RING MAIN UNIT.Clearance to Telstra assets shall be as noted on EARTHINGdrawing No. 5221 Sheet 1.

62 5255 4 5255


1/6/11

C. Noel

A. Bletchly

L. Burton

SPACING BETWEEN RING MAIN UNIT AND OTHER METAL OBJECTS


A ORIGINAL ISSUE

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00 HV Switchgear01 HV Switchgear Index Sh1

5217 Sh1 Outdoor RMU with Precast Conc Fdn5229 Sh1 Construction Code Guide 11kV RMU5229 Sh2 Construction Code Guide Foundation and Site Finish5229 Sh3 Construction Code Guide 22kV RMU

5230 Sh1 Site Preparation Sloping Site Max Cut and Fill5232 Sh1 Culvert Foundation Details Material5232 Sh2 Culvert Foundation Details Construction

5233 Sh1 Location in Residential Allotments5234 Sh1 Location in Council Parklands5234 Sh2 Location in Council Parklands

5236 Sh1 ABB 11kV RMU Safelink Material5236 Sh2 ABB 11kV RMU Safelink Construction

5237 Sh1 ABB 11kV Switchgear - HV Switchgear Schematic5237 Sh2 ABB 11kV Safelink - HV Swtichgear Schematic

5238 Sh1 ABB 11kV Safeplus,Safering Material5238 Sh2 ABB 11kV Safeplus, Safering Construction

5243 Sh1 FandG 22kV Construction5243 Sh2 FandG 22kV RMU Construction

5252 Sh1 FandG 22kV RMU Schematic5252 Sh2 FandG 22kV RMU Schematic

5252 Sh3 FandG 22kV HV Switchgear Schematic5253 Sh1 ABB 11kV Safeplus, Safering HV Switchgear Schematic5255 Sh1 RMU Installation5255 Sh2 RMU Installation5255 Sh3 RMU Installation5255 Sh4 RMU Installation

09 HV Switchgear

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