S-1 — المواصفات العامة للتركيبات الكهربائية
D الكابلات والأسلاك
الصفحة 26 في الوثيقة الأصلية
عرض PDFD. CABLES & WIRES:
D.1. STANDARDS:
D.1.1 Cables and wires shall comply with the following standards as appropriate:-
IEC/BS EN 60502-1
Power cables with extruded insulation and their accessories
for rated voltages from 1 kV (Um = 1,2 kV) up to 30 kV
(Um = 36 kV) - Part 1: Cables for rated voltages of 1 kV
(Um = 1,2 kV) and 3 kV (Um = 3,6 kV)
IEC/BS EN 60228 Conductors of insulated cables
BS EN 10257-1
Zinc or zinc alloy coated non-alloy steel wire for armouring
either power cables or telecommunication cables
BS 5467 Electric cables -Thermosetting insulated, armoured cables for
voltages of 600/1000 V and 1900/3300 V
BS 6004
Electric cables - PVC insulated and PVC sheathed cables for
voltages up to and including 300/500 V, for electric power
and lighting
BS EN 50525-2-71
Electric cables - Low voltage energy cables of rated voltages
up to and including 450/750 V (U0/U) Cables for general
applications.
IEC 60227-1 Polyvinyl chloride insulated cables of rated voltages up to
and including 450/750 V - Part 1: General requirements
IEC 60227-2 Part 2: Test methods
IEC 60227-3 Part 3: Non-sheathed cables for fixed wiring
IEC 60227-4 Part 4: Sheathed cables for fixed wiring
IEC 60227-5 Part 5: Flexible cables (cords)
IEC 60227-6 Part 6: Lift cables and cables for flexible connections
BS 2897 Specification for wrought aluminium for electrical purposes.
Strip with drawn or rolled edges
IEC 60245-1 Rubber insulated cables - Rated voltages up to and
including 450/750 V - Part 1: General requirements
IEC 60245-2 Part 2: Test methods
IEC 60245-3 Part 3: Heat resistant silicone insulated cables
IEC/BS EN 60702-1 Mineral insulated cables and their terminations with a rated
voltage not exceeding 750 V - Part 1: Cables
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D.1.2 Cable termination shall comply with the following standard specifications:-
BS 6121-1 Mechanical cable glands - Armour glands – Requirements
and test methods
BS EN 50262 Cable glands for electrical installations
IEC/BS EN 60702-2 Mineral insulated cables and their terminations with a rated
voltage not exceeding 750 V - Part 2: Terminations
IEC/BS EN 61238-1 Compression and mechanical connectors for power cables
for rated voltages up to 30 kV (Um = 36 kV) - Part 1: Test
methods and requirements
D.2 MULTI-CORE 600/1000 VOLT PVC INSULATED ARMOURED (PVC/SWA/PVC)
CABLE:
D.2.1 The conductors shall be stranded of plain annealed copper or aluminium wires of high
conductivity.
D.2.2 The conductors shall be insulated by PVC and the core insulation shall be coloured as stated
below for identification.
D.2.3 The bedding shall consist of an extruded layer of PVC for which a single layer of galvanized
steel wires shall be provided as armouring and earth continuity conductor.
D.2.4 The cable shall have final serving over the armour comprising of a black extruded PVC sheath.
D.2.5 The PVC used for the core insulation, bedding and sheath shall be of the hard type and the
insulation of the cable shall conform to Type TI3, Table 1 of BS EN 50363 -3:2005. The PVC
used for the sheath shall be to Type 9, Table 1 of BS: 7655-4.2:2000.
D.2.6 The core of multi-core PVC insulated armoured and non -armoured cables shall be identified by
the following colours.
Number of Cores Colour
Two Red, Black
Three a) Red, Yellow, Blue
b) Red, Black, Green/Yellow
Four Red, Yellow, Blue, Black
NOTE - When a single core PVC/SWA/PVC cable is required the armouring shall be
single layer aluminum wires.
D.3 MULTI- CORE 600/1000VOLT PVC INSULATED NON-ARMOURED, PVC
SHEATHED (PVC/PVC) CABLE:
The cable shall be as D.2 above in every respect except without armouring.
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D.4 MULTI-CORE 600/1000 VOLT ARMOURED CROSS-LINKED POLYETHYLENE
CABLE:
D.4.1 The conductor shall have stranded annealed copper or aluminium wires of high conductivity.
D.4.2 The conductor shall be insulated by extruded cross -linked polyethylene (XLPE) compound,
suitable to permit operation of the cables at a maximum sustained conductor temperature of
90°C.
D.4.3 The bedding and over sheath shall be extruded PVC of the heat resisting and hard type
complying with Type 9, Table 1of relevant B.S. or equivalent.
D.4.4 The armouring shall be of single layer galvanized steel wires.
D.4.5 Identification of cores shall be as follows:
Number of Cores Colour
Two Red, Black
Three a) Red, Yellow, Blue
b) Red, Black, Green/Yellow
Four Red, Yellow, Blue, Black
NOTE - The armouring for single core XLPE/SWA/PVC cable shall be single layer
aluminum wires.
D.5 SINGLE CORE PVC INSULATED CABLES (NON-ARMOURED):
D.5.1 The conductors shall be from plain annealed copper or aluminium wires of high conductivity.
D.5.2 Conductors of nominal cross-sectional area of 4 mm2 and above (4 mm² included) shall be of
stranded wires.
D.5.3 Conductors of nominal cross-sectional area of 1.5 and 2.5 mm2 may be solid wires, but stranded
wires are preferable.
D.5.4 The insulation shall be from hard PVC complying with Type TI3, Table 1 of BS EN 50363 -
3:2005.
D.5.5 The P.V.C. insulation of the cores shall be identified by the following colours:
Phase conductor Red, Yellow, Blue
Neutral conductor Black
Earth conductor Green/Yellow
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D.6 FLEXIBLE CORDS:
D.6.1 Flexible cords shall be 450/750 Volt, Three core.
D.6.2 Flexible cords shall be circular, silicon rubber insulated, glass fiber braided.
D.6.3 The conductors shall be tinned annealed copper.
D.6.4 Identification of cores shall be Brown, Blue and Green/Yellow
D.7 PVC SHEATHED M.I.C.C. CABLES:
D.7.1 M.I.C.C. cables of 1000 Volt grade shall be of copper solid conductors mineral insulated.
D.7.2 Seals for M.I.C.C. cables shall be of the cold screw -on pot type consisting of a brass pot
complete with anchoring wedges and caps.
NOTE - Heat shrinkable termination is acceptable.
D.7.3 All saddle shall be of copper of the spacer bar stand-off pattern.
D.8 SUBMITTALS:
The following shall be submitted for approval:
a) Full technical details and Manufacturer's catalogues of each type & size of the wire and
cable proposed to be used in the Electrical works.
b) Copy of test certificate from an Independent Testing Authority confirming that the wires
and cables are complying with the relevant clauses of this specification.
c) A sample of each type & size of the wire & cable proposed to be used to M.E.W central
work shop for testing and approving.
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D.1. STANDARDS:
D.1.1 Cables and wires shall comply with the following standards as appropriate:-
IEC/BS EN 60502-1
Power cables with extruded insulation and their accessories
for rated voltages from 1 kV (Um = 1,2 kV) up to 30 kV
(Um = 36 kV) - Part 1: Cables for rated voltages of 1 kV
(Um = 1,2 kV) and 3 kV (Um = 3,6 kV)
IEC/BS EN 60228 Conductors of insulated cables
BS EN 10257-1
Zinc or zinc alloy coated non-alloy steel wire for armouring
either power cables or telecommunication cables
BS 5467 Electric cables -Thermosetting insulated, armoured cables for
voltages of 600/1000 V and 1900/3300 V
BS 6004
Electric cables - PVC insulated and PVC sheathed cables for
voltages up to and including 300/500 V, for electric power
and lighting
BS EN 50525-2-71
Electric cables - Low voltage energy cables of rated voltages
up to and including 450/750 V (U0/U) Cables for general
applications.
IEC 60227-1 Polyvinyl chloride insulated cables of rated voltages up to
and including 450/750 V - Part 1: General requirements
IEC 60227-2 Part 2: Test methods
IEC 60227-3 Part 3: Non-sheathed cables for fixed wiring
IEC 60227-4 Part 4: Sheathed cables for fixed wiring
IEC 60227-5 Part 5: Flexible cables (cords)
IEC 60227-6 Part 6: Lift cables and cables for flexible connections
BS 2897 Specification for wrought aluminium for electrical purposes.
Strip with drawn or rolled edges
IEC 60245-1 Rubber insulated cables - Rated voltages up to and
including 450/750 V - Part 1: General requirements
IEC 60245-2 Part 2: Test methods
IEC 60245-3 Part 3: Heat resistant silicone insulated cables
IEC/BS EN 60702-1 Mineral insulated cables and their terminations with a rated
voltage not exceeding 750 V - Part 1: Cables
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D.1.2 Cable termination shall comply with the following standard specifications:-
BS 6121-1 Mechanical cable glands - Armour glands – Requirements
and test methods
BS EN 50262 Cable glands for electrical installations
IEC/BS EN 60702-2 Mineral insulated cables and their terminations with a rated
voltage not exceeding 750 V - Part 2: Terminations
IEC/BS EN 61238-1 Compression and mechanical connectors for power cables
for rated voltages up to 30 kV (Um = 36 kV) - Part 1: Test
methods and requirements
D.2 MULTI-CORE 600/1000 VOLT PVC INSULATED ARMOURED (PVC/SWA/PVC)
CABLE:
D.2.1 The conductors shall be stranded of plain annealed copper or aluminium wires of high
conductivity.
D.2.2 The conductors shall be insulated by PVC and the core insulation shall be coloured as stated
below for identification.
D.2.3 The bedding shall consist of an extruded layer of PVC for which a single layer of galvanized
steel wires shall be provided as armouring and earth continuity conductor.
D.2.4 The cable shall have final serving over the armour comprising of a black extruded PVC sheath.
D.2.5 The PVC used for the core insulation, bedding and sheath shall be of the hard type and the
insulation of the cable shall conform to Type TI3, Table 1 of BS EN 50363 -3:2005. The PVC
used for the sheath shall be to Type 9, Table 1 of BS: 7655-4.2:2000.
D.2.6 The core of multi-core PVC insulated armoured and non -armoured cables shall be identified by
the following colours.
Number of Cores Colour
Two Red, Black
Three a) Red, Yellow, Blue
b) Red, Black, Green/Yellow
Four Red, Yellow, Blue, Black
NOTE - When a single core PVC/SWA/PVC cable is required the armouring shall be
single layer aluminum wires.
D.3 MULTI- CORE 600/1000VOLT PVC INSULATED NON-ARMOURED, PVC
SHEATHED (PVC/PVC) CABLE:
The cable shall be as D.2 above in every respect except without armouring.
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D.4 MULTI-CORE 600/1000 VOLT ARMOURED CROSS-LINKED POLYETHYLENE
CABLE:
D.4.1 The conductor shall have stranded annealed copper or aluminium wires of high conductivity.
D.4.2 The conductor shall be insulated by extruded cross -linked polyethylene (XLPE) compound,
suitable to permit operation of the cables at a maximum sustained conductor temperature of
90°C.
D.4.3 The bedding and over sheath shall be extruded PVC of the heat resisting and hard type
complying with Type 9, Table 1of relevant B.S. or equivalent.
D.4.4 The armouring shall be of single layer galvanized steel wires.
D.4.5 Identification of cores shall be as follows:
Number of Cores Colour
Two Red, Black
Three a) Red, Yellow, Blue
b) Red, Black, Green/Yellow
Four Red, Yellow, Blue, Black
NOTE - The armouring for single core XLPE/SWA/PVC cable shall be single layer
aluminum wires.
D.5 SINGLE CORE PVC INSULATED CABLES (NON-ARMOURED):
D.5.1 The conductors shall be from plain annealed copper or aluminium wires of high conductivity.
D.5.2 Conductors of nominal cross-sectional area of 4 mm2 and above (4 mm² included) shall be of
stranded wires.
D.5.3 Conductors of nominal cross-sectional area of 1.5 and 2.5 mm2 may be solid wires, but stranded
wires are preferable.
D.5.4 The insulation shall be from hard PVC complying with Type TI3, Table 1 of BS EN 50363 -
3:2005.
D.5.5 The P.V.C. insulation of the cores shall be identified by the following colours:
Phase conductor Red, Yellow, Blue
Neutral conductor Black
Earth conductor Green/Yellow
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D.6 FLEXIBLE CORDS:
D.6.1 Flexible cords shall be 450/750 Volt, Three core.
D.6.2 Flexible cords shall be circular, silicon rubber insulated, glass fiber braided.
D.6.3 The conductors shall be tinned annealed copper.
D.6.4 Identification of cores shall be Brown, Blue and Green/Yellow
D.7 PVC SHEATHED M.I.C.C. CABLES:
D.7.1 M.I.C.C. cables of 1000 Volt grade shall be of copper solid conductors mineral insulated.
D.7.2 Seals for M.I.C.C. cables shall be of the cold screw -on pot type consisting of a brass pot
complete with anchoring wedges and caps.
NOTE - Heat shrinkable termination is acceptable.
D.7.3 All saddle shall be of copper of the spacer bar stand-off pattern.
D.8 SUBMITTALS:
The following shall be submitted for approval:
a) Full technical details and Manufacturer's catalogues of each type & size of the wire and
cable proposed to be used in the Electrical works.
b) Copy of test certificate from an Independent Testing Authority confirming that the wires
and cables are complying with the relevant clauses of this specification.
c) A sample of each type & size of the wire & cable proposed to be used to M.E.W central
work shop for testing and approving.
29