BS EN 50525-3-31 Fire Resistant Power Cables Mica+LSZH Insulated, Non-sheathed (Single Core) 300/500V

FFX100 05mZ1-U/R/K (CU/MGT+LSZH 300/500V Class 1/2/5)

Fire Resistant Cable APPLICATION

Fire resistant cables are used in power stations, mass transit underground passenger systems, airports, petrochemical plants, hotels, hospitals and high-rise buildings — environments where circuit integrity must be maintained during a fire to keep emergency lighting, fire alarms, lifts and critical control systems operational.
In these applications, the cable is required to continue supplying power under direct fire exposure, which is why our FFX100 series is tested to BS 6387 and IEC 60331 for circuit integrity.

Fire Resistant Cable STANDARDS

Basic design adapted from BS EN 50525-3-31

Fire Resistant Cable 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	IEC 60754-2; EN 50267-2-2
Minimum Smoke Emission	IEC 61034-2; EN 61034-2

Fire Resistant Cable VOLTAGE RATING

300, 500V

Fire Resistant Cable CABLE CONSTRUCTION

Conductor: Copper conductor according to BS EN 60228 class 1/2/5.
Fire Barrier: Mica glass tape.
Insulation: Thermoplastic compound of type TI 7 to EN 50363-7.
Insulation Option: UV resistance, hydrocarbon resistance, oil resistance, anti-rodent and anti-termite properties can be offered as option.

Fire Resistant Cable COLOUR CODE

Black, Blue, Brown, Grey, Orange, Pink, Red, Turquoise, Violet, White, Green and Yellow. Bi-colours of any combination of the above mono-colours are permitted.

Fire Resistant Cable Physical AND THERMAL PROPERTIES

Maximum temperature range during operation: 70°C
Maximum short circuit temperature (5 Seconds): 160°C
Minimum bending radius: 4 x Overall Diameter

Fire Resistant Cable CONSTRUCTION PARAMETERS

Conductor		FFX100 05mZ1-U/R/K
No. of Cores × Cross-sectional Area	Conductor Class	Nominal Insulation Thickness	Min. Overall Diameter	Max. Overall Diameter	Approx. Weight
No.×mm2		mm	mm	mm	kg/km
1×0.5	1	0.6	2.9	3.3	13.5
1×0.75	1	0.6	3.1	3.5	16.5
1×1.0	1	0.6	3.2	3.7	19.7
1×0.5	2	0.6	3.0	3.4	14.4
1×0.75	2	0.6	3.2	3.6	17.3
1×1.0	2	0.6	3.3	3.8	21.3
1×0.5	5	0.6	3.1	3.5	14.2
1×0.75	5	0.6	3.2	3.7	17.7
1×1.0	5	0.6	3.4	3.8	20.7

Note: The parameters listed above are nominal values as per cable standards. Actual values may vary due to material and manufacturing process variations. For precise specifications or customized requirements, please contact us for further information.

Fire Resistant Cable Electrical PROPERTIES

Conductor operating temperature: 70°C
Ambient temperature: 30°C

Fire Resistant Cable Current-Carrying Capacities (Amp)

Conductor Cross-sectional Area	Single-phase a.c.	Three-phase a.c.
mm2	a	a
0.5	3	3
0.75	6	6
1.0	10	10
Note: These values apply to the majority of cases. Further information should be sought in unusual cases eg.: (i) When high ambient temperatures are involved, ie. above 30°C (ii) Where long lengths are used (iii) Where ventilation is restricted (iv) Where the cords are used for other purposes, ego internal wiring of apparatus.

Fire Resistant Cable Voltage Drop (Per Amp Per Meter)

Conductor crosssectional 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
0.5	93	93	93	93	80	80	80	80
0.75	62	62	62	62	54	54	54	54
1.0	46	46	46	46	40	40	40	40

Note: *Spacings larger than one cable diameter will result in a large voltage drop.