sdcs-02 construction standard for6 drawings fig.1 meter room fig.2 cable trench & cover fig.3...
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Saudi Electricity Company الشركة السعودية للكهرباء
SEC DISTRIBUTION CONSTRUCTION STANDARD SDCS-02
DATE: November 2016
SDCS-02
CONSTRUCTION STANDARD
FOR
UNDERGROUND DISTRIBUTION NETWORK
This specification is property of SEC and
subject to change or modification without any notice
Saudi Electricity Company الشركة السعودية للكهرباء
SEC DISTRIBUTION CONSTRUCTION STANDARD SDCS-02
DATE: November 2016G
Page 2 of 10
PART 10
INSTALLATION
OF
13.8 & 33 KV
METERED RING MAIN UNIT
SF6 ROOM SUBSTATIONS
Saudi Electricity Company الشركة السعودية للكهرباء
SEC DISTRIBUTION CONSTRUCTION STANDARD SDCS-02
DATE: November 2016G
Page 3 of 10
TABLE OF CONTENTS
Sr. No. DESCRIPTION PAGE
NO.
13.8/33 KV METERED RING MAIN UNIT SF6 ROOM
1 INTRODUCTION 4
2 SERVICE CONDITIONS AND SERVICE PARAMETERS 4
3 REVISION AND ADDITIONS 4
4 DESIGN OF METER ROOM 4
5 CIVIL CONSTRUCTION REQUIREMENTS 5
6 DRAWINGS 6-10
Fig.1 Meter Room 6
Fig.2 Cable trench & Cover 7
Fig.3 Front elevation Fig.4 Lighting arrangement 8
Fig.5 Door Details Fig.6 Window Details 9
Fig.7 Foundation Plan Fig.8 Roof Slab Plan 10
Fig.9 Tie Beam Detail Fig.10 Roof Beams detail 10
Fig.11 Column and foundation detail 10
Saudi Electricity Company الشركة السعودية للكهرباء
SEC DISTRIBUTION CONSTRUCTION STANDARD SDCS-02
DATE: November 2016G
Page 4 of 10
1 Introduction
This construction standard specifies the construction design of 13.8 & 33 KV
Metered Ring Main Unit SF6 Room Sub-station. This standard is intended to assist
the field engineers and technicians to achieve unified standard in construction to
ensure a satisfactory and economical level of service without operation restrictions
so that the operational errors are minimized for safety and reliability of the system.
2 Service conditions and system parameters
For construction and installation of Drawings, the service conditions and system
requirements shall be as given in the latest revision of SEC general requirements for
all Equipment/Material specification No. 01-SDMS-01 (latest revision). This SDMS
shall also be read in conjunction with SEC Purchase Order (PO) requirements.
3 Revision and additions.
This construction standard is subject to revision as new material and methods of
construction are developed. The latest revision of existing Drawings shall be
revised if feasible and new drawings needs to be developed involving work
expansion / modification.
4 Design of Meter Room
4.1 The following points are required to be considered at site during the selection of
Metered Ring Main Unit Room Design:
4.1.1 The minimum inner dimensions of the room shall be 5000mm x 4000mm
to install Meter Ring Main Unit into on RMU’s inside the room.
4.1.2 Room should be easily accessible without any obstruction.
4.1.3 Meter Room shall not be located on the top of sewerage system or water
tanks. However, in case if it is not possible to avoid such service the standard
height of the room and trench depth must be maintained (as shown in drawing).
4.2 Door and Cable entry pipes:
4.2.1 Access to the room shall be from the front by means of hinged metal
doors, fitted with a heavy-duty locking device to secure them at closed position
and one stainless steel hasp set for separate SEC standard pad locking.
4.2.2 Door shall be opened to outside the room either to the right or left hand
side. It shall be provided with door stoppers and locking at open position to
protect from swinging in order to protect the energy meter box to be fixed on the
right side of the front wall as well as to avoid accidents.
4.2.3 All door hinges and its fixing bolts & nuts shall be concealed and made of
rigid material.
4.2.4 Locking shall be as follows:
Handle shall be high grade stainless steel.
Saudi Electricity Company الشركة السعودية للكهرباء
SEC DISTRIBUTION CONSTRUCTION STANDARD SDCS-02
DATE: November 2016G
Page 5 of 10
Shall be operated by Central handle lock by using SEC standard key or pad
lock according to SEC specification SEC-02-02 latest revision.
4.2.5 The door shall be made of steel 2500mm wide and 3498mm high
excluding the door frame.
4.2.6 Ventilation louvers shall be shall be provided as shown in figure 5.
4.2.7 Door shall be bonded to any metal framework by a bolted removable 35
mm2 tinned copper braid.
4.3 For the entry & exit of SEC Cable in to and out of the meter room shall be 4
PVC pipes of 150mm diameter in compliance with latest revision of relevant SEC
Specification shall be provided.
4.4 Reinforced Concrete Cable Trench:
4.4.1 Reinforced Concrete Cable Trench 15cm thick shall be provided in the
room as shown in figure 1 & 2. The Trench shall be 600mm wide and 1300mm
deep as covered by removable Checkered steel plate.
4.4.2 Steel reinforcement 10mm diameter 20cm C/C on both directions to be
provided as reinforcement for concrete trench walls and bottom.
4.4.3 Steel angel LS to be fixed on the Concrete trench edge.
4.4.4 Lean Concrete 10cm thick to be placed under the trench.
4.4.5 The upper edge of the Cable trench shall be 50mm wider than the standard
width of the trench to form a grove of 25x10mm all around the trench for fixing of
the Trench Cover as shown in Fig.2.
4.4.6 Finishing Color
The interior of the meter room shall be adequately protected against
weather changes and painted with pure white Color with a smooth surface finish
as per SEC Specification 01-SDMS-01 latest revision as refer to (Civil Work
Requirements).
4.4.7 The room shall have minimum 2 Lead lamp light as shown in Fig.4.
5 Civil Construction Requirements:
All Civil Work shall be done according to SEC Unified (Civil Work Requirement)
latest revision.
6 Drawings
Fig.1 Meter Room Fig.2 Cable trench & Cover
Fig.3 Front elevation Fig.4 Lighting arrangement
Fig.5 Door Details. Fig.6 Window Details
Fig.7 Foundation Plan Fig.8 Roof Slab Plan
Fig.9 Tie Beam Detail Fig.10 Roof Beams detail
Fig.11 Column and foundation detail.
6200
200
2400 1300
200
4000
200
4400
200 200
2400x1000mm WINDOW WITH VENTILATION
FIG: 1 - 13.8 / 33KV METERED RING MAIN UNIT (SF-6)ROOM SIZE 5000mm x 4000mm
5000400 400
400 400
5400
6200
200
4000
4400
400
5200
400
400
5200
450
200
1300
2500x3500mm DOOR OPENING
1000
4-6"Ø PVC PIPECOVERED BY END CAPS
1250 2500 1250200 200
600
600
3500
600150 150
CA
BLE
TR
ENC
H D
EPTH
130
0mm
CO
VER
ED B
Y 8
mm
TH
ICK
NES
STR
ENC
H C
OV
ERA
C
A
B
HIGH VOLTAGE ROOM
450
4-6"Ø PVC PIPECOVERED BY END CAPS
CA
BLE
TR
ENC
H D
EPTH
130
0mm
CO
VER
ED B
Y 8
mm
TH
ICK
NES
STR
ENC
H C
OV
ER
R181
R181
R181
600
M.R.M.U
GROUND ROD AT EACH CORNER(COPPERWELD, 16mm DIA.)
GG
COMPRESSIONCONNECTOR
CABLE SCREEN
COMPRESSIONCONNECTOR
70mm sq.Ground Conductor
Saudi Electricity Company
SEC DISTRIBUTION CONSTRUCTION STANDARDSDCS-02
DATE: November 2016G
SEC
TIO
N C
TREN
CH
CO
VER
600
1300
650
10
8
25
650
LIFT
ING
HO
OK
ALL
PIE
CES
CU
TTO
EQ
UA
L LE
NG
TH
TREN
CH
CO
VER
8m
m T
HIC
K(S
TEEL
)
FIG
2: C
AB
LE T
REN
CH
& C
OV
ER
Saudi Electricity Company
SEC DISTRIBUTION CONSTRUCTION STANDARDSDCS-02
DATE: November 2016G
3500400
500 1450
500
400
500 145060
0 1300
FRO
NT
ELEV
ATI
ON
SEC
TIO
N A
-A
FIG
: 4 L
IGH
TIN
G A
RR
AN
GEM
ENT
3600
150
4000
1400
1200
100
400
400
4003600
SEC
TIO
N B
-BSC
ALE
1
:100
SCA
LE
1:1
00SC
ALE
1:
100
SCA
LE
1:1
00
2 ST
EP-U
PC
ompa
cted
Bac
kfill
ASH
PALT
LEV
EL 0
.00
600 1300
500
ASH
PALT
LEV
EL 0
.00
MET
ERB
OX12
5012
50
2500
3500
3500
2000
x 3
500m
mFU
LLY
LO
UV
ERED
DO
OR
2mm
FLY
MES
H IN
ALU
MIN
UM
FR
AM
E
2400
x 1
000m
mST
EEL
WIN
DO
W
Com
pact
ed B
ackf
ill
Com
pact
ed B
ackf
illA
SHPA
LT L
EVEL
0.0
0A
SHPA
LT L
EVEL
0.0
0
FIN
ISH
FLO
OR
LEV
EL +
50
4000
5000
LED
LA
MP
LIG
HT
500x
500m
m E
XH
AU
ST F
AN
WIT
H O
UTS
IDE
LOU
VER
S
3500400
500 1450
400
500 1450
600 1300
2 ST
EP-U
PC
ompa
cted
Bac
kfill
ASH
PALT
LEV
EL 0
.00
600 1300
ASH
PALT
LEV
EL 0
.00
1000
2400
2400
x 1
000m
mW
IND
OW
WIT
H S
TEEL
FLY
MES
H
LED
LA
MP
LIG
HT
1500
500
2500
x350
0mm
DO
OR
OPE
NIN
G
500x
500m
m E
XH
AU
ST F
AN
WIT
H O
UTS
IDE
LOU
VER
S
FIG
: 3 E
LEV
ATI
ON
& S
ECTI
ON
Saudi Electricity Company
SEC DISTRIBUTION CONSTRUCTION STANDARDSDCS-02
DATE: November 2016G
3500
1350
80
200
646
1000
SECTION D-D
SECTION E-E FIG: 6 WINDOWS DETAILSSCALE 1:50
PLAN2mm THK.LOUVERS
FIG: 5 DOOR DETAILSSCALE 1:50
2500
120013
00
2500
3498
2mm
GA
P
80
2mm
GA
P
FRONT VIEW
PLAN
10x10x1 ANGULARBAR DOOR FRAME4-20cm HINGES
200
200
200
200
2mm GAP2mm GAP2336
10x10x1 ANGULARBAR (DOOR FRAME)
2mm FLY MESH IN ALUMINUM FRAME
FRONT VIEW
2mm
FLY
MES
HIN
ALU
MIN
UM
FR
AM
E
1000
2400
IN ALUMINUM FRAME50x5mm STEEL SIRIP
2mm FLY MESH2mm LOUVER ANGULAR BAR
50x50x5mm
2mm LOUVER50x5mm STEEL SIRIP
1000
5050
50 2400 50
802
Saudi Electricity Company
SEC DISTRIBUTION CONSTRUCTION STANDARDSDCS-02
DATE: November 2016G
1400
5000
1200C1
F1
TB2
1400
1400
1200
1200C1
F1
450
TB1
TB1
3500
1400
1400
1200
1200
450
C1
F1
TB2
1400
1400
1200
1200C1
F1
450
FIG
: 7 F
OU
ND
ATI
ON
PLA
NSC
ALE
:
N
TS
5000
200
400 200
450
4000 200
450
400
200
FIG
: 8 R
OO
F SL
AB
PLA
NSC
ALE
:
N
TS
200
400
400 200 4000 200 400
200
6-10mmØ /m
4-12mmØ /m
1200
RB
1
400
200
5000
6-12mmØ /m
4-12mmØ /m
6-10mmØ /m
1200
1000
RB
1
SEC
TIO
N A
-ASC
ALE
:
NTS
200
40020
150
SEC
TIO
N B
-BSC
ALE
:
NTS
6-10mmØ /m
4-12mmØ /m
400
200
1200
RB
2
6-12mmØ /m
4000
200
RB
212
0010
00
40020
150
120
4-12mmØ /m
6-10mmØ /m
FIG
: 10
RO
OF
BEA
MS
DET
AIL
RO
OF
BEA
M (R
B1)
45020
035
00
C1
400
1000
450
C1
200
2-14mmØ (TYPICAL)
2-14mmØ (TYPICAL)
10mmØ STIRRUPS
@15
0mm
C.C
.
5-14mmØ
3-14mmØ
YY
400
200
3-14mmØ
10mmØ STIRRUPS
4-14mmØ
SEC
TIO
N Y
-Y
400
200
C1
5000
RO
OF
BEA
M (R
B2)
200
C1
400
2-14mmØ (TYPICAL)
2-14mmØ (TYPICAL)
10mmØ STIRRUPS
@15
0mm
C.C
.
5-14mmØ
3-14mmØ
ZZ
SEC
TIO
N Z
-Z20
0
400
3-14mmØ
10mmØ STIRRUPS
4-14mmØ
FIG
: 9 T
IE B
EAM
S D
ETA
IL
SCA
LE:
N
TS
SCA
LE:
N
TS
TIE
BEA
M (T
B1)
C1
450
3500
450 C1
10mmØ STIRRUPS
@15
0mm
C.C
.
3-14mmØ (TYPICAL)
3-14mmØ
3-14mmØ
Y1
Y1
10cm
TH
K. L
EAN
CO
NC
RET
ESE
CTI
ON
Y1-
Y1
200
500
3-14mmØ
10mmØ STIRRUPS
3-14mmØ
10cm
TH
K. L
EAN
CO
NC
RET
E
200
5000
C1
TIE
BEA
M (T
B2)
C1
200
Z1Z1
3-14mmØ
3-14mmØ
10cm
TH
K. L
EAN
CO
NC
RET
E
10mmØ STIRRUPS
@15
0mm
C.C
.
3-14mmØ (TYPICAL)
SEC
TIO
N Z
1-Z1
200
500
3-14mmØ
10mmØ STIRRUPS
3-14mmØ
10cm
TH
K. L
EAN
CO
NC
RET
E
REI
NFO
RC
EMEN
T C
OV
ER W
ITH
IN C
ON
CR
ETE
SHA
LL B
E:SL
AB
S-20
mm
FO
OTI
NG
S-75
mm
CO
LUM
NS
:-40m
m O
THER
S-40
mm
SPEC
IAL
NO
TE:
1400
1400
200
1200
450
120
370
PLA
N (F
1/C
1)
10-14mmØ BOTHWAYS
8-14mmØ
TIES 10mmØ
@ 1
50m
m C
.C.
200
500
3-14mmØ
3-14mmØ
10mmØ STIRRUPS ELEV ± 0.0
8-14mmØ
TIES 10mmØ
@ 1
50m
m C
.C. 10-12mmØ BOTHWAYS
300
10cm
TH
K. L
EAN
CO
NC
RET
E
1400
1200
1050
300
300
6-10mmØ (TOP) BOTHWAYS 100
Depth Variesas per site
SEC
TIO
N X
-X (F
1/C
1)
FIG
: 11
CO
LUM
N A
ND
FO
OTI
NG
DET
AIL
SCA
LE:
NTS
400
400
400
6-10mmØ /m
4-12mmØ
/m
RB
2
/m
B
RB
2
RB1
6-/10mmØ
B
4-12mmØ
6-12mmØ /mAlternate bend up bars /m
1000
(TY
PIC
AL) 6-10mmØ /m
A
4-12mmØ /m
6-12mmØ /m
1200
/m
RB1
6-12mmØ /m
4-12mmØ
A
GR
OU
ND
RO
D A
T EA
CH
CO
RN
ER(C
OPP
ERW
ELD
, 16m
m D
IA.)
Saudi Electricity Company
SEC DISTRIBUTION CONSTRUCTION STANDARDSDCS-02
DATE: September 2016G
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