Fire Performance Cables -Draka

Why Fire Performance Cables are so important ?

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Major accidents which have resulted in the death of many innocent people, have taught us that the safety of the occupants are users in public, commercial and industrial environments is of paramount importance. Every possible safety designed to prevent and protect against loss of life and damage to property should be specified and installed.

One such safety feature in the use of fire performance cables for critical safety system, Including fire alarms, emergency lighting, PA system, CCTV system, emergency power supplies and smoke & shutters.

The correct selection and installation of these “life saving” cables help ensure that in the event of an emergency, vital safety system will continue to operate to assist an orderly evacuation of the premises and to aid the emergency services in gaining quick and effective entry to deal with the hazard.

 

At Prysmain Group, we understand what is required form a fire performance cable and we appreciate the pressures faces by specifiers and consultant in selecting the correct cable from the range available. For nearly twenty years, our special cables have been servicing the needs of market by designing and manufacturing the widest rang of fire performance cables available today.

 

APPLICATION

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Our fire performance cables are specifically designed to facilitate the quick and orderly evacuation of the building occupants in the events of an emergency. Purpose designed to maintain circuit integrity to a host of critical safety systems, including fire alarms, emergency lights, CCTV systems and emergency power supplied MAX-FOH

 

 

Choosing The Right Cables, and The Right Manufacturer

Issues to take note when comparing with other cables,

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1. Some brands are OEM cables and carry certification from the original manufacturers.

2. Some conductor used may be undersized conductor, and hence cheaper.

3. Some brands use only one layer of mica tape for all conductor size with less than the recommended over-lapping.

4. Insulation used is cheaper PVC instead of LSHF material, hence the cable is actually not low Smoke Halogen Free compliant.

5. Cheaper polymer are used to reduce cost, but are without sufficient flame and smoke suppressant.

6. Thickness of insulation and sheathing are thinner to reduce cost.

7. Other cables may only have in-house testing reports and not certification from a recognised 3rd party verification agency.

 

Safety in NEVER a compromise when it comes to fire protection !

 

 

 

  

STANDARDS AND APPROVALS
BS 6387/SS 299
Part 1: 1994 – Fire, Fire with Water & Fire with Mechanical Shock Tests

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The following test is the nationally recognised United Kingdom and Singapore test used to determine if a cable is capable of maintaining circuit integrity under fire conditions, fire with water and fire with mechanical shock. These tests use a number of alternative time and temperature parameters and depending on the level achieved by the cable, a corresponding letter is assigned to denote the category the cable passed.

Resistance to fire :	Symbol
650°C for 3 hours	A
750°C for 3 hours	B
950°C for 3 hours	C
950°C for 20 minutes	S

 

Resistance to fire and water :	Symbol
650°C for 15 min	W

 

 

Resistance to fire  and mechanical shock :	Symbol
650°C for 15 minutes, with 30 second hammer blows	X
750°C for 15 minutes, with 30 second hammer blows	B
950°C for 15 minutes, with 30 second hammer blows	C

During the tests the cables are energized at their rated voltage.
MAX-FOH cables meet the highest categories of BS 6387 i.e. C, W & Z

 

 

IEC 61034 – Smoke Density Test

This test measures the smoke emission from electric cables during fire. The test is carried out in a 3m cubed chamber where a cable sample is subjected to fire. The smoke emission and density are measured by transmitting a beam of light across the inside of the chambers to a photo electric cell which measures the amount of light received All MAX-FOH cables comply to IEC 61034 requirement.

 

 

 

 

 

Additional Consideration

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As well as requirements written into international and British cable standards, there are other essential criteria which designers and consultants need to consider – is the cable able to withstand voltage spikes, transmit date prevent flame propagation?

All MAX-FOH cables do comply with these additional benefits, including the added advantage that MAX-FOH requires fewer joints in a cable run compare to mineral, reducing the risk of weak links in the chain. MAX-FOH does not require complicated and is therefore quicker and easier to install.

 

CONSTRUCTION OF CABLE

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Construction	MAX-FOH 500 mullti-cores	MAX-FON-OSCR 500V twisted pair	MAX-FOH 0.6/1KV	MAX-FOH-I 0.6/1KV	MAX-FOH-125 0.6/1KV
Conductor	Stranded annealed copper	Stranded annealed copper	Stranded annealed copper	Stranded annealed copper	Stranded annealed copper
Fire Barrier	Mica tape	Mica tape	Mica tape	Mica tape	Mica tape
Insulation	Cross-linked polythylene (XLPE)	Cross-linked polyethylene (XLPE)	Cross-linked polyethylen	Cross-linked EVA** (XLEVA)<Orange>	Cross-linked EVA** (XLEVA)
Shield*	Optional*	Aluminium foil with tinned copper drain wire	Aluminium foil with tinned copper drain wire	-	Aluminum foil with tinner copper drain wire
Filler*	LSHF filler or polypropylene split yam	LSHF filier or polypropylene split yam	LSHF filier or polypripylene yam	-	LSHF filier or polypripylene yam
Binder Tape*	Polyester tape	Polyester tape	Polyester tape	-	Polyestes tape
Bedding	Low smoke halogen free (LSHF) compound (black)	Low smoke halogen free (LSHF) compound (black)	Low smoke halogen free (LSHF) compound (black)	-	Low smoke halogen free (LSHF) compound (black)
Amour*/#	Galvanised steel wire (aluminium or copper wire for single core)	Galvanised steel wire (aluminium or copper wire for single core)	Galvanised steel wire (aluminium or copper wire for single core)	-	Galvanised steel wire (aluminium or copper wire for single core)
Sheath	Low smoke halogen free(LSHF) compound (Orange)	Low smoke halogen free(LSHF) compound (Orange)	Low smoke halogen free(LSHF) compound (Orange)	-	Low smoke halogen free (LSHF) compound (Orange)

 

 

Optional: Depending on requirement

# Braided armour also available on request

XLEVA (Cross-linked Ethylene Vinyl Acetate) material used are suitable for operating temperature of 110°C up to 125°C

XLPE (Cross-linked Polyethylene) material used for operating temperature of 90°C

No. of cores	Identification of cores
	Option 1	Option 2
1	Natural	Other color on request
2	Brown, blue	Red, Black
3	Brown, Black, Grey	Red, Yellow, Blue
4	Brown, Black, Grey, Blue	Red, Yellow, Blue, Black
5	Brown, Black, Grey, Blue	Red, Yellow, Blue, Black, Green/Yellow
6 and above	Black with white numbering

Note: Special construction and design to customers’ specification can be upon request

 

Applicable Stanards

IEC 60502-1 AS/NZS 3198	Extruded solid dielectric insulated power cable for rated voltage of 1 kV up to 30kV
IEC 60228  BS 6360 AS/NZS 1125	Conductor of insulated cables
IEC 60754-1  BS 6425-2 AS/NZS 1160.5	Test on gases evolved during combustion of electric cables-Determination of the amount of halogen acid gases
IEC 60754-2  BS 6426-2 AS/NZS 1160.5.4	Test on gases evolved during combustion of electric cables-Determination of degree of acidity of gases evolved by measuring pH and conductivity
IEC 60331  AS/NZS 1160.5.5	Fire resistant characteristics of electric cable (750°C for 90 minutes)
IEC 60332 Part 1  BS 4066 Part 1	Test on electric cables under fire conditions-Test on a single vertical insulated wire or cable
IEC 60332 Part 3  BS 4066 Part 3 Category A,B,C/ AS/NZS 1660.5.1	Measurement of smoke density of cables burning under defined conditions
BS 6387  SS 299 Part 1	Performance requirements for cables required to maintain circuit integrity under fire condition Category C  : tested at 950°C for 3 hours Category W : fire with water Category Z   : fire with mechanical shock
BS 6724	Armoured cables for electricity supply having thermosetting insulation with low emission of smoke and corrosive gases when affected by fire
BS 7211	Thermosetting insulated cables (non-armoured) For electric power and lighting with low emission of smoke and corrosive gases when affected by fire
BS 7846	600/1000V armoured fire-resistant electric cables having low emission of smoke and corrosive gases when affected by fire
AS/NZS 3013	Electrical installations – Classification of the fire and mechanical performance of wiring system

* Standards applied will vary depending on cable construction

 

Comparision between test standards IEC 60331 Part 21 & SS 299 Part 1

Ref	Description	IEC 60331 Part 21	0.6/1 kV cables	Data cables	Optical fiber cables	SS 299 Part 1	0.6/1 kV cables	Data cables	Optical fiber cables
1	Resistance to FIRE alone Flame temperature / Duration	750°C/90 min	✔	✔	✔	Cat A - 650°C/3hr. Cat B - 750°C/3hr. Cat C - 950°C/3hr. Cat S - 650°C/20min.	✔
2	Resistance to FIRE with mechanical shock Flame temperature / Duration Mechanical shock	830°C/120min Every 5min	✔			Cat X - 650°C/3hr. Cat Y - 750°C/3hr. Cat Z - 950°C/3hr. Every 30 sec.	✔
3	Resistance to FIRE with water spray Flame temperature / Duration	Not available				Cat w - 650°C/15min.	✔
4	Other tests Electrical requirements for completed cables Bending characteristics Resistance of cable to impact	Not available	✔			Available	✔

 

 

MAX-FOH Insulate and sheathed MAX-FOH (OSCR) Insulate and sheathed

500Vac. Unarmored and Armoured with Shield

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Conductor	Plain stranded annealed copper Class 2	Plain stranded annealed copper Class 2
	0.5 mm² up to 4 mm²	0.5 mm² up to 2.5 mm²
Fire Barrier :	Mica Glass Tape	Mica Glass Tape
Insulation :	XLPE compound	XLPE compound
Bedding :	LSHF compound	LSHF compound
Shield :	Optional	Aluminium foil with tinned copper drain wire
Armouring :	Optional	Optional
Sheate :	LSHF compound	LSHF compound
UV Resistance :	Optional	Optional
Anti -Termite :	Optional	Optional
Insulation Colours :	Blue, Brown, Black, Grey	Black & White-numbering
Bedding Colours :	Black	Black
Sheath Colours :	Orange (Standard)	Orange (Standard)
Reference Standard :	BSEN 50288-7	BSEN 50288-7
Voltage : U๐/U	500V	500V
Circuit Integrity : Up to 1 mm²	IEC 60331-21,SS 299-1	IEC 60331-21,SS 299-1
1.5 mm² up to Max. mm²	IEC 60331-21,SS 299-1 BS 6387 Cat C, W, Z	IEC 60331-21,SS 299-1 BS 6387 Cat C, W, Z
Test Standard
Flame Retardant :
Single Vertical cable	ICE 60223-1, BS 4066-1, BS EN 50266-1	ICE 60223-1, BS 4066-1, BS EN 50266-1
Bunched cables	ICE 60223-1, BS 4066-3, BS EN 50266-2	ICE 60223-1, BS 4066-3, BS EN 50266-2
Halogen gases :	ICE 60754-1, BS 6425-1, BS EN 50267-1	ICE 60754-1, BS 6425-1, BS EN 50267-1
Corrosiveness & Conductivity :	ICE 60754-2, BS 6425-2, BS EN 50267-2	ICE 60754-2, BS 6425-2, BS EN 50267-2
Smoke Emission :	IEC 61034-2, BS 7622-2, BS EN 61034-2	IEC 61034-2, BS 7622-2, BS EN 61034-2

 

500Vac. Unarmoured and Armoured Fire Resistant Cables

core	Unarmoured /cable						Armoured /cable
	Nominal area of conductor	No.& Diameter of wires	Insulation Thickness	Sheath Thickness	Approx. diameter overall	Approx. weight	Bedding Thickness	Armour wire Thickness	Sheath Thickness	Approx. diameter overall	Approx. weight
	mm²	No./mm	mm	mm	mm	Kg/km	mm	mm	mm	mm	Kg/km
1	0.5	7/0.30	0.6	0.8	4.8	27	-	-	-	-	-
	0.75	7/0.37	0.6	0.8	5.0	31	-	-	-	-	-
	1	7/0.43	0.6	0.8	5.2	35
	1.5	7/0.53	0.6	0.9	5.7	45
	2.5	7/0.67	0.6	0.9	6.3	59
	4	7/0.85	0.6	0.9	6.9	77
2	0.5	7/0.30	0.7	1.0	8.4	89	1.0	0.9	1.4	13.6	348
	0.75	7/0.37	0.7	1.0	8.9	101	1.0	0.9	1.4	14.1	371
	1	7/0.43	0.7	1.0	9.2	112	1.0	0.9	1.4	14.4	392
	1.5	7/0.53	0.7	1.0	9.8	132	1.0	0.9	1.4	15.0	428
	2.5	7/0.67	0.7	1.1	11.3	181	1.0	0.9	1.4	15.1	454
	4	7/0.85	0.7	1.1	12.3	232	1.1	0.9	1.5	16.6	551
3	0.5	7/0.30	0.6	1.0	9.0	97	1.0	0.9	1.4	14.2	368
	0.75	7/0.37	0.6	1.0	9.4	111	1.0	0.9	1.4	14.6	394
	1	1/0.43	0.6	1.0	9.8	125	1.0	0.9	1.5	15.0	418
	1.5	7/0.53	0.6	1.1	10.5	151	1.0	0.9	1.5	15.9	469
	2.5	7/0.67	0.7	1.1	12.0	208	1.0	0.9	1.5	16.0	504
	4	7/0.85	0.7	1.0	13.2	273	1.1	0.9	1.4	17.3	610
4	0.5	7/0.30	0.6	1.0	9.8	112	1.0	0.9	1.5	15.0	404
	0.75	7/0.37	0.6	1.0	10.3	130	1.0	0.9	1.5	15.7	442
	1	1/0.43	0.6	1.0	10.7	146	1.0	0.9	1.5	16.1	471
	1.5	7/0.53	0.6	1.1	11.7	184	1.1	0.9	1.5	17.1	532
	2.5	7/0.67	0.7	1.1	13.2	248	1.1	0.9	1.5	17.2	578
	4	7/0.85	0.7	1.2	14.7	337	1.1	0.9	1.5	18.5	692

E Unarmoured fire resistant cables
F Armoured fire resistant cables

* Multicore unarmoured and armoured fire resistant cables are available upon request

 

 

500V, Unarmored and Armoured Shielded Fire Resistant Cables

 

 

core	Unarmoured /cable						Armoured /cable
	Nominal area of conductor	No.& Diameter of wires	Insulation Thickness	Sheath Thickness	Approx. diameter overall	Approx. weight	Bedding Thickness	Armour wire Thickness	Sheath Thickness	Approx. diameter overall	Approx. weight
	mm²	No./mm	mm	mm	mm	Kg/km	mm	mm	mm	mm	Kg/km
1	0.5	7/0.30	0.6	1.0	8.7	69	1.0	0.9	1.3	13.8	327
	0.75	7/0.37	0.6	1.0	9.1	78	1.0	0.9	1.3	14.2	347
	1	1/0.43	0.6	1.0	9.5	86	1.0	0.9	1.3	14.6	364
	1.5	7/0.53	0.6	1.1	10.1	101	1.0	0.9	1.3	15.2	395
	2.5	7/0.67	0.7	1.1	11.5	136	1.0	0.9	1.3	16.6	467

core	Unarmoured /cable						Armoured /cable
	Nominal area of conductor	No.& Diameter of wires	Insulation Thickness	Sheath Thickness	Approx. diameter overall	Approx. weight	Bedding Thickness	Armour wire Thickness	Sheath Thickness	Approx. diameter overall	Approx. weight
	mm²	No./mm	mm	mm	mm	Kg/km	mm	mm	mm	mm	Kg/km
2	0.5	7/0.30	0.6	1.1	13.0	129	1.1	1.25	1.3	18.8	602
	0.75	7/0.37	0.6	1.2	13.9	154	1.2	1.25	1.4	19.9	666
	1	1/0.43	0.6	1.2	14.5	171	1.2	1.25	1.4	20.5	703
	1.5	7/0.53	0.6	1.2	15.5	203	1.2	1.25	1.4	21.5	768
	2.5	7/0.67	0.7	1.3	17.5	274	1.3	1.25	1.4	23.9	926

core	Unarmoured /cable						Armoured /cable
	Nominal area of conductor	No.& Diameter of wires	Insulation Thickness	Sheath Thickness	Approx. diameter overall	Approx. weight	Bedding Thickness	Armour wire Thickness	Sheath Thickness	Approx. diameter overall	Approx. weight
	mm²	No./mm	mm	mm	mm	Kg/km	mm	mm	mm	mm	Kg/km
4	0.5	7/0.30	0.6	1.3	15.4	195	1.2	1.25	1.4	21.4	760
	0.75	7/0.37	0.6	1.3	16.5	234	1.3	1.25	1.5	22.7	846
	1	1/0.43	0.6	1.3	17.2	264	1.3	1.25	1.5	23.4	901
	1.5	7/0.53	0.6	1.3	18.4	321	1.3	1.25	1.6	24.8	1012
	2.5	7/0.67	0.7	1.4	21.0	444	1.4	1.25	1.7	27.6	1241

G Unarmoured fire resistant cables
H Armoured fire resistant cables

* Multipairs unarmoured and armoured shielded fire resistant cables are available upon request

 

 

MAX-FOH Insulated and sheathed	MAX-FOH Insulated, armoured and sheathed
MAX-FOH Insulated, non – sheathed	MAX-FOH-125 Insulated and sheathed

Conductor	Plain stranded annealed copper Class 2	Plain stranded annealed copper Class 2	Plain stranded annealed copper Class 2	Plain stranded annealed copper Class 2
	1.5 mm² up to 630 mm²	1.5 mm² up to 630 mm²	1.5 mm² up to 630 mm²**	1.5 mm² up to 630 mm²**
Fire Barrier :	Mica Glass Tape	Mica Glass Tape	Mica Glass Tape	Mica Glass Tape
Insulation :	XLPE compound	XLPE compound	XLPE compound	XLPE compound
Bedding :	-	LSHF compound	-	-
Armouring :	-	Aluminium foil with tinned copper drain wire	-	-
Sheate :	LSHF compound	LSHF compound	-	LSHF compound
UV Resistance :	Optional	Optional	Optional	Optional
Anti -Termite :	Optional	Optional	Optional	Optional
Insulation Colours :	Natural	Natural	Orange (standard)	Whitle
Bedding Colours :	-	Black	-	-
Sheath Colours :	Orange (Standard)	Orange (Standard)	Orange (Standard)	Orange (Standard)
Voltage : U๐/U	600/1000V	600/1000V	600/1000V	600/1000V
Circuit Integrity : Up to 1 mm²	ICE 60331, SS 299-1/BS 6387 Cat C,W,Z(for 300/500V, 450/750V, 600/1000V)	ICE 60331, SS 299-1/BS 6387 Cat C,W,Z(for 300/500V, 450/750V, 600/1000V)	ICE 60331, SS 299-1/BS 6387 Cat C,W,Z(for 300/500V, 450/750V, 600/1000V)	ICE 60331, SS 299-1/BS 6387 Cat C,W,Z(for 300/500V, 450/750V, 600/1000V)
Test Standard
Flame Retardant:
Single Vertical cable	ICE 60332-1, BS 4066-1, BS EN 50266-1	ICE 60332-1, BS 4066-1, BS EN 50266-1	ICE 60332-1, BS 4066-1, BS EN 50266-1	ICE 60332-1, BS 4066-1, BS EN 50266-1
Bunched cables	ICE 60332-3, BS 4066-3, BS EN 50266-2	ICE 60332-3, BS 4066-3, BS EN 50266-2	ICE 60332-3, BS 4066-3, BS EN 50266-2	ICE 60332-3, BS 4066-3, BS EN 50266-2
Halogen gases :	ICE 60754-1, BS 6425-2, BS EN 50267-2-1	ICE 60754-1, BS 6425-2, BS EN 50267-2-1	ICE 60754-1, BS 6425-2, BS EN 50267-2-1	ICE 60754-1, BS 6425-2, BS EN 50267-2-1
Corrosiveness & Conductivity :	ICE 60754-2, BS 6425-2, BS EN 50267-2-2	ICE 60754-2, BS 6425-2, BS EN 50267-2-2	ICE 60754-2, BS 6425-2, BS EN 50267-2-2	ICE 60754-2, BS 6425-2, BS EN 50267-2-2
Smoke Emission :	ICE 61034-2, BS 7622-2, BS EN 61034-2	ICE 61034-2, BS 7622-2, BS EN 61034-2	ICE 61034-2, BS 7622-2, BS EN 61034-2	ICE 61034-2, BS 7622-2, BS EN 61034-2

 

Cable Type : MAX-FOH-I / MAX-FOH  
Constructions : Insulated, non-sheathed Insulated and sheathed 
Material : Composition Copper/MGT/XLEVA Copper/MGT/XLPE/LSHF 
Standard : IEC 60502-1 
Voltage : 600/1000V

Single core:

Conductor cross sectional area	No.& Diameter of wires	Insulation Thickness	Cable overall diameter	Cable weight	Insulation Thickness	Sheath Thickness	Cable overall diameter	Cable weight
1 x 1.5	7/0.53	0.7	4.0	30	0.7	1.4	6.6	60
1 x 2.5	7/0.67	0.8	4.5	40	0.7	1.4	7.0	73
1 x 4	7/0.85	1.0	5.4	60	0.7	1.4	7.6	93
1 x 6	7/1.04	1.0	6.0	90	0.7	1.4	8.1	120
1 x 10	7/1.35	1.0	7.0	130	0.7	1.4	9.0	160
1 x 16	7/1.70	1.0	8.1	190	0.7	1.4	10.1	230
1 x 25	7/2.14	1.2	9.8	300	0.7	1.4	12.0	330
1 x 35	19/1.53	1.2	11.0	400	0.7	1.4	13.3	450
1 x 50	19/1.78	1.4	12.8	540	0.7	1.4	14.8	600
1 x 70	19/2.14	1.4	14.5	740	1.1	1.4	16.7	810
1 x 95	19/2.52	1.6	16.9	1020	1.1	1.5	18.9	1100
1 x 120	37/2.03	1.6	18.4	1250	1.2	1.5	20.9	1340
1 x 150	37/2.25	1.6	20.7	1540	1.4	1.6	23.1	1650
1 x 185	37/2.52	2.0	23.0	1930	1.6	1.7	25.6	2630
1 x 240	61/2.25	2.2	23.0	2510	1.7	1.4	28.4	3260
1 x 300	61/2.52	2.4	28.9	3130	1.8	1.8	31.3	3260
1 x 400	61/2.85	2.6	32.1	3960	2.0	1.9	34.7	4100
1 x 500	61/3.20	2.8	39.7	6330	2.2	2.1	38.8	5180
1 x 630	127/2.52	-	-	-	2.4	2.2	43.3	6590
1 x 800	127/2.85	-	-	-	2.6	2.3	48.0	8300
1 x 1000	127/3.20	-	-	-	2.8	2.5	53.5	10470

 

Cable Type : MAX-FOH-AWAConstructions : Insulated, non-sheathed 
Material : Composition Copper/MGT/XLEVA Copper/MGT/XLPE/LSHF 
Standard : IEC 60502-1 
Voltage : 600/1000V

Single core:

Conductor cross sectional area	No.& Diameter of wires	Diameter under armour	Armour wires diameter	Sheath Thickness	Cable overall diameter	Cable weight
1 x 1.5	7/0.53	-	-	-	-	-
1 x 2.5	7/0.67	-	-	-	-	-
1 x 4	7/0.85	-	-	-	-	-
1 x 6	7/1.04	-	-	-	-	-
1 x 10	7/1.35	-	-	-	-	-
1 x 16	7/1.70	-	-	-	-	-
1 x 25	7/2.14	-	-	-	-	-
1 x 35	19/1.53	-	-	-	-	-
1 x 50	19/1.78	13.8	1.25	1.5	19.5	800
1 x 70	19/2.14	15.7	1.25	1.5	21.7	1130
1 x 95	19/2.52	17.7	1.25	1.6	23.9	1450
1 x 120	37/2.03	19.4	1.6	1.6	26.3	1770
1 x 150	37/2.25	21.4	1.6	1.7	28.5	2130
1 x 185	37/2.52	23.7	1.6	1.8	31.0	2580
1 x 240	61/2.25	26.5	1.6	1.9	34.0	3220
1 x 300	61/2.52	29.2	1.6	1.9	36.7	3890
1 x 400	61/2.85	32.8	2.0	2.1	41.5	5000
1 x 500	61/3.20	36.5	2.0	2.2	45.4	6150
1 x 630	127/2.52	40.8	2.0	2.3	49.9	7670
1 x 800	127/2.85	45.7	2.5	2.5	56.2	9780
1 x 1000	127/3.20	50.8	2.5	2.6	61.5	12080

 

 

MAX-FOH Insulated and sheathed	MAX-FOH-SWA Insulated, armoured and sheathed
MAX-FOH-125 Insulated and sheathed	MAX-FOH-125-SWA Insulated, armoured and sheathed

Conductor	Plain stranded annealed copper Class 2	Plain stranded annealed copper Class 2	Plain stranded annealed copper Class 2	Plain stranded annealed copper Class 2
	1.5 mm² up to 400 mm²	1.5 mm² up to 400 mm²	1.5 mm² up to 400 mm²**	1.5 mm² up to 400 mm²**
Fire Barrier :	Mica Glass Tape	Mica Glass Tape	Mica Glass Tape	Mica Glass Tape
Insulation :	XLPE compound	XLPE compound	XLPE compound	XLPE compound
Bedding :	-	LSHF compound	-	-
Armouring :	-	Aluminium foil with tinned copper drain wire	-	-
Sheate :	LSHF compound	LSHF compound	-	LSHF compound
UV Resistance :	Optional	Optional	Optional	Optional
Anti -Termite :	Optional	Optional	Optional	Optional
Bedding Colours :	-	Black	-	-
Sheath Colours :	Orange (Standard)	Orange (Standard)	Orange (Standard)	Orange (Standard)
Voltage : U๐/U	600/1000V	600/1000V	600/1000V	600/1000V
Circuit Integrity : Up to 1 mm²	ICE 60331, SS 299-1/BS 6387 Cat C,W,Z(for 300/500V, 450/750V, 600/1000V)	ICE 60331, SS 299-1/BS 6387 Cat C,W,Z(for 300/500V, 450/750V, 600/1000V)	ICE 60331, SS 299-1/BS 6387 Cat C,W,Z(for 300/500V, 450/750V, 600/1000V)	ICE 60331, SS 299-1/BS 6387 Cat C,W,Z(for 300/500V, 450/750V, 600/1000V)
Test Standard
Flame Retardant:
Single Vertical cable	ICE 60332-1, BS 4066-1, BS EN 50266-1	ICE 60332-1, BS 4066-1, BS EN 50266-1	ICE 60332-1, BS 4066-1, BS EN 50266-1	ICE 60332-1, BS 4066-1, BS EN 50266-1
Bunched cables	ICE 60332-3, BS 4066-3, BS EN 50266-2	ICE 60332-3, BS 4066-3, BS EN 50266-2	ICE 60332-3, BS 4066-3, BS EN 50266-2	ICE 60332-3, BS 4066-3, BS EN 50266-2
Halogen gases :	ICE 60754-1, BS 6425-2, BS EN 50267-2-1	ICE 60754-1, BS 6425-2, BS EN 50267-2-1	ICE 60754-1, BS 6425-2, BS EN 50267-2-1	ICE 60754-1, BS 6425-2, BS EN 50267-2-1
Corrosiveness & Conductivity :	ICE 60754-2, BS 6425-2, BS EN 50267-2-2	ICE 60754-2, BS 6425-2, BS EN 50267-2-2	ICE 60754-2, BS 6425-2, BS EN 50267-2-2	ICE 60754-2, BS 6425-2, BS EN 50267-2-2
Smoke Emission :	ICE 61034-2, BS 7622-2, BS EN 61034-2	ICE 61034-2, BS 7622-2, BS EN 61034-2	ICE 61034-2, BS 7622-2, BS EN 61034-2	ICE 61034-2, BS 7622-2, BS EN 61034-2

 

Cable Type : MAX-FOH / MAX-FOH-SWA
Constructions : XLPE Insulated, LSHF bedding, Steel weir armoured and LSHF sheathed
Material Composition : Copper/MGT/XLPE/LSHF 
Standard : 600/1000V

2 core:

Conductor cross sectional area	No.& Diameter of wires	Insulation Thickness	Sheath Thickness	Cable overall diameter	Cable weight	Diamete	Armour wires diameter	Sheath Thickness	Cable overall diameter	Cable weight
2 x 1.5	7/0.53	0.7	1.8	11.3	180	9.7	0.9	1.8	15.1	435
2 x 2.5	7/0.67	0.7	1.8	12.1	210	1.5	0.9	1.8	15.9	493
2 x 4	7/0.85	0.7	1.8	13.2	270	11.6	0.9	1.8	17.0	576
2 x 6	7/1.04	0.7	1.8	14.3	340	12.7	1.25	1.8	18.8	777
2 x 10	7/1.35	0.7	1.8	16.3	380	14.7	1.25	1.8	20.8	901
2 x 16	7/1.70	0.7	1.8	19.7	540	16.9	1.25	1.8	23.5	1230
2 x 25	7/2.14	0.9	1.8	22.5	780	20.4	1.6	1.8	27.7	1780
2 x 35	19/1.53	0.9	1.8	25.3	1030	23.3	1.6	1.8	30.4	2150
2 x 50	19/1.78	1.0	1.8	28.4	1320	26.3	1.6	1.9	33.7	2600
2 x 70	19/2.14	1.1	1.8	32.4	1800	30.3	1.6	2.0	37.9	3300
2 x 95	19/2.52	1.1	2.0	37.0	2450	34.9	1.6	2.1	43.5	4570
2 x 120	37/2.03	1.2	2.1	40.6	3000	38.3	2.0	2.2	47.1	5310
2 x 150	37/2.25	1.4	2.2	44.9	3710	42.4	2.0	2.4	51.6	6280
2 x 185	37/2.52	1.6	2.3	19.8	4570	47.5	2.0	2.5	57.9	8150
2 x 240	61/2.25	1.7	2.5	56.0	5920	53.3	2.5	2.7	64.1	9920
2 x 300	61/2.52	1.8	2.6	61.6	7280	59.1	2.5	2.9	70.3	11790

3 core:

Conductor cross sectional area	No.& Diameter of wires	Insulation Thickness	Sheath Thickness	Cable overall diameter	Cable weight	Diamete	Armour wires diameter	Sheath Thickness	Cable overall diameter	Cable weight
3 x 1.5	7/0.53	0.7	1.8	12.0	200	10.3	0.9	1.8	15.7	477
3 x 2.5	7/0.67	0.7	1.8	12.8	245	11.2	0.9	1.8	16.6	544
3 x 4	7/0.85	0.7	1.8	14.0	315	12.3	0.9	1.8	17.7	641
3 x 6	7/1.04	0.7	1.8	15.2	400	13.6	1.25	1.8	19.7	867
3 x 10	7/1.35	0.7	1.8	17.3	500	15.7	1.25	1.8	21.8	1033
3 x 16	7/1.70	0.7	1.8	19.9	720	18.1	1.25	1.8	24.7	1460
3 x 25	7/2.14	0.9	1.8	24.1	1060	22.0	1.6	1.8	29.2	2130
3 x 35	19/1.53	0.9	1.8	27.0	1390	24.9	1.6	1.8	32.1	2600
3 x 50	19/1.78	1.0	1.8	30.3	1810	28.2	1.6	1.9	35.7	3180
3 x 70	19/2.14	1.1	1.8	35.0	2540	33.1	1.6	2.0	41.7	4570
3 x 95	19/2.52	1.1	2.0	39.5	3390	37.4	1.6	2.1	46.2	5690
3 x 120	37/2.03	1.2	2.1	43.5	4190	41.2	2.0	2.2	50.2	6680
3 x 150	37/2.25	1.4	2.2	48.5	5140	46.0	2.0	2.4	56.4	8610
3 x 185	37/2.52	1.6	2.3	53.5	6390	51.0	2.0	2.5	61.6	10220
3 x 240	61/2.25	1.7	2.5	60.2	5920	57.7	2.5	2.7	68.7	15070
3 x 300	61/2.52	1.8	2.6	66.4	10290	63.5	2.5	2.9	74.9	15070

 4 core:

Conductor cross sectional area	No.& Diameter of wires	Insulation Thickness	Sheath Thickness	Cable overall diameter	Cable weight	Diamete	Armour wires diameter	Sheath Thickness	Cable overall diameter	Cable weight
4 x 1.5	7/0.53	0.7	1.8	13.0	230	11.3	0.9	1.8	16.7	532
4 x 2.5	7/0.67	0.7	1.8	14.0	290	12.3	0.9	1.8	17.7	616
4 x 4	7/0.85	0.7	1.8	15.2	380	13.6	0.9	1.8	19.7	842
4 x 6	7/1.04	0.7	1.8	16.6	480	15.0	1.25	1.8	21.1	990
4 x 10	7/1.35	0.7	1.8	19.0	640	17.3	1.25	1.8	23.4	1212
4 x 16	7/1.70	0.7	1.8	22.1	920	20.0	1.25	1.8	27.3	1890
4 x 25	7/2.14	0.9	1.9	26.5	1390	24.4	1.6	1.9	31.6	2580
4 x 35	19/1.53	0.9	2.0	29.7	1770	27.6	1.6	2.1	35.0	3110
4 x 50	19/1.78	1.0	2.2	33.9	2350	32.0	1.6	2.2	40.6	4340
4 x 70	19/2.14	1.1	2.3	38.9	3260	36.8	1.6	2.3	45.6	5520
4 x 95	19/2.52	1.1	2.4	44.1	4490	41.6	1.6	2.5	50.6	7000
4 x 120	37/2.03	1.2	2.6	48.5	5470	46.2	2.0	2.7	56.6	8940
4 x 150	37/2.25	1.4	2.8	53.6	6790	51.1	2.0	2.8	61.9	10650
4 x 185	37/2.52	1.6	2.6	59.7	8400	51.0	2.0	2.8	68.2	12700
4 x 240	61/2.25	1.7	2.8	67.1	10870	57.7	2.5	3.0	75.6	15710
4 x 300	61/2.52	1.8	3.0	74.0	13500	63.5	2.5	3.2	82.5	18820

 

  Multic 1.5 mm² core:

Conductor cross sectional area	No.& Diameter of wires	Insulation Thickness	Sheath Thickness	Cable overall diameter	Cable weight	Diamete	Armour wires diameter	Sheath Thickness	Cable overall diameter	Cable weight
6 x 1.5	7/0.53	0.7	1.8	15.2	280	13..6	1.25	1.8	19.7	750
7 x 1.5	7/0.53	0.7	1.8	15.2	295	13.6	1.25	1.8	19.7	765
10 x 1.5	7/0.53	0.7	1.8	19.0	410	13.6	1.25	1.8	23.5	990
12 x1.5	7/0.53	0.7	1.8	19.6	460	15.0	1.25	1.8	24.1	1070
14 x 1.5	7/0.53	0.7	1.8	20.6	520	17.3	1.6	1.8	25.8	1290
16 x 1.5	7/0.53	0.7	1.8	21.7	580	20.0	1.6	1.8	26.9	1390
19 x 1.5	7/0.53	0.7	1.8	22.9	660	24.4	1.6	1.8	28.1	1510
24 x 1.5	7/0.53	0.7	1.8	26.7	830	27.6	1.6	1.9	32.1	1830
27 x 1.5	7/0.53	0.7	1.8	27.3	900	32.0	1.6	1.9	32.7	1510
37 x 1.5	7/0.53	0.7	1.8	30.5	1180	36.8	2.0	2.0	37.3	2640

 

 Multic 2.5 mm² core:

Conductor cross sectional area	No.& Diameter of wires	Insulation Thickness	Sheath Thickness	Cable overall diameter	Cable weight	Diamete	Armour wires diameter	Sheath Thickness	Cable overall diameter	Cable weight
6 x 2.5	7/0.67	0.7	1.8	16.5	335	14.9	1.25	1.8	21.0	860
7 x 2.5	7/0.67	0.7	1.8	16.5	380	14.9	1.25	1.8	21.0	890
10 x 2.5	7/0.67	0.7	1.8	20.7	530	19.1	1.25	1.8	25.9	1300
12 x2.5	7/0.67	0.7	1.8	21.4	610	19.8	1.25	1.8	26.6	1400
14 x2.5	7/0.67	0.7	1.8	22.4	686	20.8	1.6	1.8	27.6	1510
16 x 2.5	7/0.67	0.7	1.8	23.7	770	21.1	1.6	1.8	28.9	1650
19 x 2.5	7/0.67	0.7	1.8	25.0	880	23.4	1.6	1.8	30.2	1800
24 x 2.5	7/0.67	0.7	1.8	29.2	1100	27.6	1.6	1.9	34.6	2200
27 x 2.5	7/0.67	0.7	1.8	29.8	1210	28.2	1.6	1.9	35.2	2330
37 x 2.5	7/0.67	0.7	1.9	33.7	1610	32.3	2.0	2.0	40.6	3220

 

SELECTION OF CROSS-SECTIONAL

AREA OF CONDUCTOR

In order to choose the right power cable, one has to consider:

• the current
• the voltage drop
• the shot circuit rating
• the installation methods
• the ambient temperature
• the frequency and harmonic current
• maximum safe length at short circuit
  
   

Current Rating

---

When electric current. ows through the conductor of a cable, the electrical resistance of the conductor generate heat. When a temperature greater than that allowed is reached is reached by the cable due to heat generation, a larger conductor size (with lower electrical resistance) has to be selected. Other important considerations are methods of installation of the cable and ambient temperature. Calculation which takes into account all criteria are described in EIT standard 2001-56 and rather complex. In general, preferences is given to standard current rating tables which are issued by national standardization bureaus. The current rating are based on the following standard conditions of the installation.

• Maximum operating temperature of conductor       = 90°C, 110-125°C
• Ambient air temperature                                      =40°C
• Ground temperature                                            =30°C
  

 

Voltage Drop

---

Another important factor for the determination of the conductor size is the voltage drop. The voltage drop of the cable at a given current is caused by losses in the cable. In case of a too high voltage drop, it is necessary to choose a bigger conductor size. The voltage drop in a cable demotes the different in voltage at the beginning and at the end of the cable. It depends on:

• the current carried
• the power factor
• the length of the cable
• the resistance of the cable
• reactance of the cable
   

The permissible voltage drop is usually stated as a percentage of the circuit voltage.
According to EIT standard 2001-56 regulation, it is stipulated that the total voltage drop for any particular cable run most be such the voltage drop in the circuit of which the cable forms apart does not exceed 5% of the nominal voltage of the supply.

 

Selection of Cable based On Voltage Drop and Current using tables

---

Since the actual power factor of the load is usually not known, the most practical approach to the question of the voltage drop is to assume the worst condition, i.e. power factor equal to one and the conductor is at maximum operating. The voltage drop values given in the tables are based on these assumptions.

The values of the voltage drop (Vd) are tabulated for a current of one Ampere for 1 metre run, the value of voltage drop needs to be multiplied by the length of the run, in metre, and by the current, in Ampere that the cables are to carry.

V = Vd x I x L

Where V          = Voltage

Vd                    = Approximate Voltage drop/Ampere/metre

I                       = Current in Ampere per phase

L                      = Route length in metres

 

Examples:

---

Given that the supply voltage is 400V, 3 phase 50Hz and that the cable used is a 4C Cu/mica/XLPE/SWA-LSHF fire resistant cable. Required cable is to be installed in ground and to carry a 250 Amp load per phase over a route length of 100 m. Cable installed is to be in compliance with EIT standard 2001-56 regulation