The Zimbabwe Tender We are Participating in for PVC Insulated Aluminium Overhead Service Cable

2024-07-03 14:49

Zimbabwe Tender PVC Insulated Aluminium Overhead Service Cable. we are participating in for Line Materials for ZETDC. The list of line items: Hard Drawn Aluminium Conductor; PVC/SWA Cables; Steel Reinforced Aluminium Conductor; PVC Insulated Aluminium Overhead Service Cable; Wire Galvanised Stay 7/8; Galvanised Stay Wire 7/12

PVC Insulated Aluminium Overhead Service Cable in Zimbabwe

25mm2 Aluminum Service Cable Construction

Overhead Service Cable Parameter

Description	Unit	Required
Reference standards		IEC/BS
Insulator material		PVC/FR UV STABILISED
Conductor materia		Aluminium
Conductor size	sq. mm	25
Minimum insulation radial thickness	mm	0.8
Minimum Averageinsulation radial thickness	mm	0.92
Set Insulation Radial thickness	mm	0.97
No of cores/Colour/Construction		2/BlackFig 8
Major diameter over insulation	mm	19
Minor diameter over insulation	mm	8.65
Method of installation		Air
Nominal Voltage	V	400V ph to ph /230V ph to Neutral
System Highest Voltage	V	440 V ph to ph 250V ph to Neutral
System Frequency	Hz	50
System Fault Leve	kA	31.5
No.of inner cores	ea	two
Tensile Strength of Conductor material	N/mm2	125~165
Conductor construction	Min No ofwires	7/2.21
Conductor diameter	mm	6.63
Conductor resistance at 20℃	ohm/k m	1.066
Operating ambient temperature	℃	1 to 40
Conductor maximum operating temperature	℃	70
Maximum current carrying capacity	A	92
Approximate Voltage Drop@power factor of 0.8 @50Hzand ambient air @ 30 Deg Celcius	mV/A/ m	2.7
Spark test-A.C.(r.ms.)-10 kV		No breakdown
Voltage test-A.C.(r.ms.)- 2.0kV		No breakdown
Colour of sheath		Black
Insulation tensile Strength	N/mm2	12.5
Insulation Elongation at break		125%
Insulation resistance to cracking	℃	Temp:150±2 Requirement: No crack
Type of despatch drum	ea	Treatedwooden

AAC Cable Parameters

Hard Drawn Aluminum Wasp Conductor
Item	Description	Unit	Requirement
1	Size	mm2	100
2	CodeName		WASP
3	Overall Diameter	mm	13.17
4	Stranding		7/4.39
5	Uhtimate Tensile Strength	kgf	1632
6	Mass per km	Kg/km	290
7	(Maximum)AC Resistance at 20℃	ohms	0.27
8	Overall Area	mm2	105.97
Hard Drawn Aluminum Ant Conductor
Item	Description	Unit	Requirement
1	Size	mm2	50
2	Code Name		Ant
3	Overall Diameter	mm	9.30
4	Stranding		7/3.10
5	Ultimate Tensile Strength	kgf	844
6	Mass per km	Kg/km	145
7	(Maximum)AC Resistance at 20℃	ohms	0.54
8	Overall Area	mm²	52.83
9	Current Rating	Amps	244

Conductor Constants Aluminum Conductors Steel Reinforced
		Requirement	Requirement
1	Nominal Area Sq.mm	50	100
2	Code Name	Rabbit	Dog
3	Strands Alum.	6/3.35	6/4.02
4	No/diam mm Steel	1/3.35	7/1.57
5	Overall diam mm	10.05	14.15
6	Geom Mean Rad.Mm	2.5125	3.538
7	Overall area Sq.mm	61.71	118.40
8	Breaking Load kg	1,876	3,335
9	moduhus oflnitial	6117	5765
10	Elasticity/Final	8085	7347
11	Coeff of linear expansion/deg.Cx 1/1000000	18.99	19.53

12	Mass kg/km
	Alum	144.62	260.53
	Steel	69.38	133.47
	Total	214.00	394.00

13	AC resistance ohms/km at 20 deg.C	0.556	0.306