BS 7846 600/1000V Mica XLPE SWA LSZH Fire Resistant Cable - 2-5 Core & Multicore - Fire Performance Cable

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BS 7846 600/1000V Mica XLPE SWA LSZH Fire Resistant Cable - 2-5 Core & Multicore

600/1000V BS 7846 fire resistant cable with copper conductors, mica glass tape, XLPE insulation, steel wire armour and an LSZH sheath. Includes 2-5 core and multicore sizes for fixed power and control circuits.

600_1000V Mica+XLPE Insulated, LSZH Sheathed,Armoured Power Cables to BS 7846 (2-5 Cores & Multicore).pdf Contact us

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APPLICATION

BURY CABLE BS 7846 600/1000V fire resistant cable is intended for fixed power and control circuits where a mica fire barrier, steel wire armour and an LSZH sheath are specified. The range covers 2-5 core and multicore constructions for building services and infrastructure projects.

Typical project settings include power stations, rail and underground passenger systems, airports, hospitals, hotels, high-rise buildings and petrochemical facilities. Suitability for an essential circuit depends on the required fire performance, cable size, installation conditions and supporting test evidence.

This page describes the mica glass tape and XLPE version. HEPR and crosslinked polyolefin insulation are options subject to specification confirmation.

KEY FEATURES

600/1000V rating with Class 2 stranded annealed copper conductors.
Mica glass tape fire barrier and XLPE GP8 insulation.
Galvanized steel wire armour for mechanical protection.
LSZH LTS1 outer sheath; black as standard, with other colours on request.
Original tables cover 2, 3, 4 and 5 cores, plus 7, 12, 19, 27 and 37 cores.

STANDARDS

Basic design to BS 7846

FIRE PERFORMANCE

Circuit Integrity	IEC 60331-21; EN 6387; BS 8491
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

VOLTAGE RATING

600/1000V

CABLE CONSTRUCTION

Conductor : Annealed copper wire, stranded according to BS EN 60228 class 2.

Fire Barrier : Mica glass tape.

Insulation : XLPE type GP 8 according to BS 7655-1.3. HEPR type GP 6 according to BS 7655-1.2 or crosslinked polyolefin material type EI 5 according to BS EN 50363-5 can be offered as option.

Bedding : Extruded layer of polymeric material.

Armouring : Galvanized steel wire.

Outer Sheath : Extruded layer of polymeric material LTS 1 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

2-core : Brown and blue.

3-core : Brown, black and grey.

4-core : Blue, brown, black and grey.

5-core : Green-and-yellow, blue, brown, black, grey.

Sheath Colour : Black; 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 : 8 x Overall Diameter

CONSTRUCTION PARAMETERS

Conductor		FRP600-mRZ1MZ1-R
No. of Cores × Cross-sectional Area	Conductor Class	Nominal Insulation Thickness	Nominal Bedding Thickness	Nominal Steel Wire Armour Diameter	Nominal Sheath Thickness	Approx. Overall Diameter	Approx. Weight
No.×mm²		mm	mm	mm	mm	mm	kg/km
2 cores
2×1.5^a	2	0.6	0.8	0.9	1.3	13.5	345
2×2.5^a	2	0.7	0.8	0.9	1.4	14.9	413
2×4^a	2	0.7	0.8	0.9	1.4	16.0	478
2×4^a&c	2	0.7	0.8	1.25	1.4	16.7	581
2×6^a	2	0.7	0.8	0.9	1.4	17.2	555
2×6^a&c	2	0.7	0.8	1.25	1.4	17.9	666
2×10^a	2	0.7	0.8	0.9	1.5	19.2	708
2×10^a&c	2	0.7	0.8	1.25	1.5	19.9	832
2×16^a	2	0.7	0.8	1.25	1.5	22.0	1036
2×25^a	2	0.9	0.8	1.25	1.6	25.7	1386
2×25^b	2	0.9	0.8	1.25	1.6	23.5	1311
2×35^a	2	0.9	1.0	1.6	1.7	29.0	1918
2×35^b	2	0.9	1.0	1.6	1.7	26.5	1814
2×50^b	2	1.0	1.0	1.6	1.8	28.5	2330
2×70^b	2	1.1	1.0	1.6	1.9	32.0	2968
2×95^b	2	1.1	1.2	2.0	2.0	36.0	4085
2×120^b	2	1.2	1.2	2.0	2.1	39.0	4846
2×150^b	2	1.4	1.2	2.0	2.2	42.0	6223
2×185^b	2	1.6	1.4	2.5	2.4	48.0	7479
2×240^b	2	1.7	1.4	2.5	2.5	52.0	9137
2×300^b	2	1.8	1.6	2.5	2.6	57.0	10937
2×400^b	2	2.0	1.6	2.5	2.8	62.0	13316
3 cores
3×1.5^a	2	0.6	0.8	0.9	1.3	14.1	384
3×2.5^a	2	0.7	0.8	0.9	1.4	15.6	467
3×4^a	2	0.7	0.8	0.9	1.4	16.8	551
3×4^a&c	2	0.7	0.8	1.25	1.4	17.5	659
3×6^a	2	0.7	0.8	0.9	1.4	18.0	652
3×6^a&c	2	0.7	0.8	1.25	1.4	18.7	768
3×10^a	2	0.7	0.8	1.25	1.5	20.9	985
3×16^a	2	0.7	0.8	1.25	1.6	23.4	1269
3×25^a	2	0.9	1.0	1.6	1.7	28.4	1953
3×25^b	2	0.9	1.0	1.6	1.7	26.5	1874
3×35^a	2	0.9	1.0	1.6	1.8	31.0	2393
3×35^b	2	0.9	1.0	1.6	1.8	28.5	2286
3×50^b	2	1.0	1.0	1.6	1.8	32.0	2952
3×70^b	2	1.1	1.0	1.6	1.9	35.0	3852
3×95^b	2	1.1	1.2	2.0	2.1	40.0	5312
3×120^b	2	1.2	1.2	2.0	2.2	44.0	6364
3×150^b	2	1.4	1.4	2.5	2.3	49.0	8113
3×185^b	2	1.6	1.4	2.5	2.4	53.0	9706
3×240^b	2	1.7	1.4	2.5	2.6	58.0	12045
3×300^b	2	1.8	1.6	2.5	2.7	63.0	14536
3×400^b	2	2.0	1.6	2.5	2.9	70.0	17866
4 cores
4×1.5^a	2	0.6	0.8	0.9	1.3	15.1	433
4×2.5^a	2	0.7	0.8	0.9	1.4	16.7	532
4×4^a	2	0.7	0.8	0.9	1.4	18.1	637
4×4^a&c	2	0.7	0.8	1.25	1.4	18.8	856
4×6^a	2	0.7	0.8	1.25	1.5	20.3	901
4×10^a	2	0.7	0.8	1.25	1.5	22.6	1159
4×16^a	2	0.7	0.8	1.25	1.6	25.3	1516
4×25^a	2	0.9	1.0	1.6	1.7	30.8	2341
4×25^b	2	0.9	1.0	1.6	1.7	29.5	2286
4×35^a	2	0.9	1.0	1.6	1.8	33.7	2898
4×35^b	2	0.9	1.0	1.6	1.8	32.0	2824
4×50^b	2	1.0	1.0	1.6	1.9	35.0	3628
4×70^b	2	1.1	1.2	2.0	2.1	41.0	5188
4×95^b	2	1.1	1.2	2.0	2.2	45.0	6585
4×120^b	2	1.2	1.4	2.5	2.3	50.0	8520
4×150^b	2	1.4	1.4	2.5	2.4	55.0	10071
4×185^b	2	1.6	1.4	2.5	2.6	60.0	12149
4×240^b	2	1.7	1.6	2.5	2.7	66.0	15217
4×300^b	2	1.8	1.6	2.5	2.9	70.0	18373
4×400^b	2	2.0	1.8	3.15	3.2	81.0	23960
5 cores
5×1.5	2	0.6	0.8	0.9	1.4	16.3	495
5×2.5	2	0.7	0.8	0.9	1.4	18.0	603
5×4	2	0.7	0.8	0.9	1.5	19.7	739
5×4^b	2	0.7	0.8	1.25	1.5	20.4	869
5×6	2	0.7	0.8	1.25	1.5	21.9	1031
5×10	2	0.7	0.8	1.25	1.6	24.6	1356
5×16	2	0.7	1.0	1.6	1.7	28.7	2010
5×25	2	0.9	1.0	1.6	1.8	33.6	2762
5×35	2	0.9	1.0	1.6	1.9	36.9	3440
5×50	2	1.0	1.2	2.0	2.0	42.4	4700
5×70	2	1.1	1.2	2.0	2.2	48.2	6186
Multicore
7×1.5	2	0.6	0.8	0.9	1.4	17.5	574
7×1.5^c	2	0.6	0.8	1.25	1.4	18.2	687
7×2.5	2	0.7	0.8	0.9	1.4	19.3	711
7×2.5^c	2	0.7	0.8	1.25	1.4	20.0	837
7×4	2	0.7	0.8	1.25	1.5	21.8	1024
12×1.5	2	0.6	0.8	1.25	1.6	22.7	968
12×2.5	2	0.7	0.8	1.25	1.6	25.5	1218
12×4	2	0.7	0.8	1.25	1.5	28.8	1725
19×1.5	2	0.6	1.0	1.6	1.6	26.1	1255
19×2.5	2	0.7	0.8	1.6	1.7	30.5	1844
19×4	2	0.7	1.0	1.6	1.7	33.2	2285
27×1.5	2	0.6	1.0	1.6	1.7	31.7	1856
27×2.5	2	0.6	1.0	1.6	1.7	35.7	2367
27×4	2	0.7	1.0	1.6	1.9	39.2	2993
37×1.5	2	0.7	1.0	1.6	1.7	34.9	2223
37×2.5	2	0.7	1.0	1.6	1.7	39.4	2878
37×4	2	0.7	1.2	2.0	2.0	44.8	4109

^a Circular or compacted circular stranded conductor (Class 2).

^b Shaped stranded conductor (Class 2).

^c Cables with alternative armour wire size.

SELECTION NOTES

Specify core count, conductor size, circuit duty and installation method. Have the circuit designer check current capacity, voltage drop, fault duty and protective conductor arrangements.
Match the exact table row, including suffixes a, b or c. Conductor shape and armour wire size can change diameter and weight. Use the corresponding values for glands, supports and routing.
The listed operating limit is 90°C, with 250°C for a 5-second short circuit and a minimum bending radius of 8 times overall diameter. These are separate limits; confirm the installation design.
Confirm the required fire test, classification and duration against reports for the supplied construction. Standard references alone do not establish a project-specific fire survival rating.
HEPR/EI5 insulation and UV, oil, hydrocarbon, rodent or termite resistance are optional. Request the exact construction and supporting data before specifying these properties.

RELATED CABLE TYPES

Compare the following constructions against the circuit specification; their voltage ratings and protection arrangements differ.

BS 7629-1 300/500V mica silicone rubber screened LSZH cable - a screened mica/silicone rubber construction.
BS 7629-1 300/500V silicone rubber screened LSZH cable - a screened silicone rubber construction.
BS 7211 300/500V XLPE LSZH cable with bare copper CPC - unarmoured fixed wiring; this version has no mica fire barrier.

FAQ

What is the standard insulation for this product?

XLPE GP8 over a mica glass tape fire barrier. HEPR GP6 and EI5 crosslinked polyolefin are optional constructions, not the default insulation on this page.

Is this a screened BS 7629-1 cable?

No. This is a 600/1000V BS 7846 steel wire armoured construction. The related 300/500V screened products have different constructions and circuit requirements.

Does this page confirm a particular fire survival duration?

No specific duration or classification is stated. Confirm the required test conditions and results for the supplied cable using the relevant test report.

What do the table suffixes mean?

Suffix a denotes circular or compacted circular Class 2 conductors; b denotes shaped Class 2 conductors; c denotes an alternative armour wire size. Retain the suffix when requesting a quoted construction.

What information is needed for a quotation?

Send the core count, conductor cross-section, quantity, installation environment and required fire test evidence. Include any sheath or insulation options and preferred drum lengths.