Fire Resisting Cable

Fire Resisting Cables

450/750V Mica+XLPE Insulated, LSZH Sheathed Power Cables to BS 7211 (Single Core)

FFX300 07mRZ1-U/R (CU/MGT+XLPE/LSZH 450/750V Class 1/2)

APPLICATION

The cables are mainly used in power stations, mass transit underground passenger systems, airports,

petrochemical plants, hotels, hospitals and high-rise buildings.

STANDARDS

Basic design adapted from BS 7211:2012

FFX300 07mRZ1-U/R (CU/MGT+XLPE/LSZH 450/750V Class 1/2)

FIRE PERFORMANCE

Circuit Integrity

IEC 60331-21; BS 6387

Flame Retardance (Single vertical wire or cable test)

IEC 60332-1-2; EN 60332-1-2

Reduced Fire Propagation (Vertically-mounted bundled wires & cables test)

IEC 60332-3-24; EN 60332-3-24

Halogen free

IEC 60754-1; EN 50267-2-1

No Corrosive Gas Emission

IEC60754-2; EN 50267-2-2

Minimum Smoke Emission

IEC 61034-2; EN 61034-2

VOLTAGE RATING

450/750V

CABLE CONSTRUCTION

Conductor : Annealed copper conductor, solid or stranded according to BS EN 60228 class 1 or class 2.

Fire Barrier : Mica glass tape.

Insulation : XLPE type GP 8 according to BS 7655-1.3. Crosslinked polyolefin material type EI 5 according to EN

50363-5 can be offered as option.

CPC (Circuit Protective Conductor) : Uninsulated copper conductor.

Outer Sheath : Extruded LSZH type LTS 4 according to BS 7655-6.1.

Outer Sheath Option : UV resistance, hydrocarbon resistance, oil resistance, anti-rodent and anti-termite

properties can be offered as option.

COLOUR CODE

Insulation Colour : Brown or blue.

Sheath Colour: White; other colours can be offered upon request.

PHYSICAL AND THERMAL PROPERTIES

Maximum temperature range during operation : 90°C

Maximum short circuit temperature (5 Seconds) : 250°C

Minimum bending radius :

OD<8mm : 4 × Overall Diameter

8mm≤OD≤12mm : 5 × Overall Diameter

OD>12mm : 6 × Overall Diameter

CONSTRUCTION PARAMETERS


Conductor

FFX300 07mRZ1-U/R

No. of Cores × Cross-sectional Area

Conductor Class

Nominal Insulation Thickness

Nominal Sheath Thickness

Min. Overall Diameter

Max. Overall Diameter

Approx. Weight

No.×mm²

 

mm

mm

mm

mm

kg/km

1×1.0

1

0.7

0.8

4.9

5.8

30

1×1.5

1

0.7

0.8

5.2

6.0

38

1×2.5

1

0.7

0.8

5.6

6.5

51

1×4

1

0.7

0.8

6.2

7.3

70

1×6

1

0.7

0.8

6.7

7.8

95

1×1.0

2

0.7

0.8

5.0

5.9

35

1×1.5

2

0.7

0.8

5.3

6.2

43

1×2.5

2

0.7

0.8

5.7

6.6

56

1×4

2

0.7

0.9

6.3

7.4

77

1×6

2

0.7

0.9

6.9

8.1

104

1×10

2

0.7

0.9

7.7

9.1

147

1×16

2

0.7

0.9

8.6

10.2

211

1×25

2

0.9

1.0

10.4

12.4

325

1×35

2

0.9

1.1

11.6

13.8

489

ELECTRICAL PROPERTIES

Conductor operating temperature : 90°C

Ambient temperature : 30°C

Current-Carrying Capacities (Amp) according to BS 7671:2008 table 4E1A


Conductor cross-sectional area

Ref. Method A (enclosed in conduit in thermally insulating wall etc.)

Ref. Method B (enclosed in conduit on a wall or in trunking etc.)

Ref. Method C (clipped direct)

Ref. Method F (in free air or on a perforated cable tray, horizontal or vertical etc) Touching

Ref. Method G (in free air) Spaced by one cable diameter

2 cables, single-phase a.c. or d.c.

3 or 4 cables, three-phase a.c.

2 cables, single-phase a.c. or d.c

3 or 4 cables, three-phase a.c.

2 cables, single-phase a.c. or d.c. flat and touching

3 or 4 cables, three-phase a.c. flat and touching or trefoil

2 cables, single-phase a.c. or d.c. flat

3 cables, three-phase a.c. flat

3 cables, three-phase a.c. trefoil

2 cables, single-phase a.c. or d.c. or 3 cables three-phase a.c. flat

Horizontal

Vertical

1

2

3

4

5

6

7

8

9

10

11

12

mm²

A

A

A

A

A

A

A

A

A

A

A

1.0

14

13

17

15

19

17.5

-

-

-

-

-

1.5

19

17

23

20

25

23

-

-

-

-

-

2.5

26

23

31

28

34

31

-

-

-

-

-

4

35

31

42

37

46

41

-

-

-

-

-

6

45

40

54

48

59

54

-

-

-

-

-

10

61

54

75

66

81

74

-

-

-

-

-

16

81

73

100

88

109

99

-

-

-

-

-

25

106

95

133

117

143

130

161

141

135

182

161

35

131

117

164

144

176

161

200

176

169

226

201

Voltage Drop (Per Amp Per Meter) according to BS 7671:2008 table 4E1B


Conductor cross-sectional area

2 cables d.c.

2 cables, single-phase a.c.

3 or 4 cables, three-phase a.c.

Ref. Methods A&B (enclosed in conduit or trunking)

Ref. Methods C, F&G (clipped direct, on trays or in free air)

Ref. Methods A&B (enclosed in conduit or trunking)

Ref. Methods C, F&G (clipped direct, on trays or in free air)

Cables touching

Cables spaced*

Cables touching, Trefoil

Cables touching, flat

Cables spaced*, flat

1

2

3

4

5

6

7

8

9

mm²

mV/A/m

mV/A/m

mV/A/m

mV/A/m

mV/A/m

mV/A/m

mV/A/m

mV/A/m

1.0

46

46

46

46

40

40

40

40

1.5

31

31

31

31

27

27

27

27

2.5

19

19

19

19

16

16

16

16

4

12

12

12

12

10

10

10

10

6

7.9

7.9

7.9

7.9

6.8

6.8

6.8

6.8

10

4.7

4.7

4.7

4.7

4.0

4.0

4.0

4.0

16

2.9

2.9

2.9

2.9

2.5

2.5

2.5

2.5

 

 

r

x

z

r

x

z

r

x

z

r

x

z

r

x

z

r

x

z

r

x

z

25

1.85

1.85

0.31

1.90

1.85

0.190

1.85

1.85

0.28

1.85

1.60

0.27

1.65

1.60

0.165

1.60

1.60

0.190

1.60

1.60

0.27

1.65

35

1.35

1.35

0.29

1.35

1.35

0.180

1.35

1.35

0.27

1.35

1.15

0.25

1.15

1.15

0.155

1.15

1.15

0.180

1.15

1.15

0.26

1.20

Note: *Spacings larger than one cable diameter will result in a large voltage drop.
r = conductor resistance at operating temperature
x = reactance
z = impedance