1100 Volts Three & Half Core Unarmoured Cables
(Aluminium Conductor) Type 'AYY'  to IS:1554(I) - 1988
				Normal Cross-Sectional Area of Conductor in mm2
Sr			Main	25	35	50	70	95	120	150	185	240	300	400	500	630
No.	Description	Unit	Neutral	16	16	25	35	50	70	70	95	120	150	185	240	300
	CONSTRUCTION DETAILS
	Conductor
1	Minimum number of wires
	a) Main conductor	nos.		6	6	6	12	15	15	15	30	30	30	53	53	53
	b) Neutral Conductor	nos.		6	6	6	6	6	12	12	15	15	15	30	30	30
2	Shape
	a) Main conductor										Shaped stranded
	b) Neutral Conductor			Circulated								Shaped Stranded
				Compacted
	Insulation
3	Type										PVC Compound Type A to IS:5831
4	Nominal thickness
	a) Main Core	mm		1.2	1.2	1.4	1.4	1.6	1.6	1.8	2.0	2.2	2.4	2.6	3.0	3.4
	b) Neutral Core	mm		1.0	1.0	1.2	1.2	1.4	1.4	1.4	1.6	1.6	1.8	2.0	2.2	2.4
5	Colour Scheme for identification										Red, Yellow, Blue, Black (Neutral Core)
	Inner Sheath & Outer Sheath
	(Applied for one operation)
6	Type										PVC Compound Type ST1 to IS:5831
7	Colour										Black
8	Minimum thickness of inner sheath	mm		0.3	0.3	0.3	0.4	0.4	0.5	0.5	0.5	0.6	0.6	0.7	0.7	0.7
9	Nominal thickness of outer sheath	mm		2.0	2.0	2.0	2.2	2.2	2.4	2.4	2.6	3.0	3.2	3.4	3.8	4.0
10	Dia over all Laid up core	mm		16.93	18.94	22.74	27.3	31.57	34.51	38.58	42.8	48.33	53.71	59.21
11	Dia over Inner Sheath	mm		17.93	19.94	23.74	28.5	32.77	35.91	39.98	44.4	49.93	55.71	61.21
12	Approximate overall diameter of cable	mm		22.13	24.14	27.94	33.08	37.37	40.91	44.98	49.80	56.13	62.31	68.21
	ELECTRICAL CHARACTERISTICS
13	Resistance of conductor per 1000m length of completed cables
	a) Maximum d.c. resistance at 20 Deg C main conductor	ohm		1.200	0.868	0.641	0.443	0.320	0.253	0.206	0.164	0.125	0.100	0.078	0.061	0.469
	b) Maximum d.c. resistance at 20 Deg. C Neutral conductor	ohm		1.910	1.910	1.200	0.868	0.641	0.443	0.443	0.320	0.253	0.206	0.164	0.125	0.100
	c) a.c. resistance at 70 Deg C for main cond			1.440	1.042	0.770	0.532	0.385	0.304	0.248	0.198	0.152	0.122	0.0962	0.0962	0.0608
14	Continuous current rating (a.c.) of cables under stranded conditions
	i) When laid direct in ground	amps		76	92	110	135	165	185	210	235	275	305	335	360	400
	ii) When laid in ducts	amps		63	77	95	115	140	155	175	200	235	260	290	305	340
	iii)When laid in air	amps		70	86	105	130	155	180	205	240	280	315	375	410	470
15	Reactance per 1000m length of cable at 50 HZ	ohm		0.054	0.050	0.050	0.046	0.043	0.042	0.042	0.042	0.041	0.040	0.040	0.040	0.040
16	Star Capacitance per 1000 m length of cable	Micro		0.072	0.80	0.80	0.84	0.88	0.92	0.92	0.92	0.92	0.92	0.96	0.96	0.96
		farad
17	Minimum volume resistivity of Insulation	Ohmcm									1 X 10 13 AT 27 Deg C and 1 x 10 10 at 70 Deg C
18	Maximum permissible shortcircuit Current for duration of one second	kilo amps		1.900	2.660	3.800	5.320	7.220	9.120	11.400	14.060	18.240	22.800	30.400	38.00	47.880
19	Voltage drop per 1000m length of cable (assuming cbl 3 phase a.c. systems)
	a) When laid direct in ground	volts		190	166	147	125	112	99	91	81	76	69	60	54	51
	b) When laid in ducts	volts		157	139	127	106	95	83	76	69	65	59	52	45	43
	c) When laid in air	volts		175	155	140	120	105	97	89	81	78	71	68	61	59
	GENERAL :
20	Approximate net weight per 1000 m length of finished cable	kg		647	767	1022	1338	1731	2123	2492	3113	3964	4900	6066
21	Standard length of cable (Subject to a manufacturing tolerance +/-5%							500							250
22	Drum Dimensions-
	a) Approximate overall height	mm		1250	1250	1450	1550	1650	1650	1850	2050	2265	1850	2050	2265	2465
	b) Approximate outer width	mm		855	855	855	910	1130	1130	1180	1180	1420	1180	1240	1350	1450
23	Approximate gross weight of drum	kg		480	540	710	940	1210	1425	1745	2190	2950	1750	2220	2860	3540
24	Minimum bending radius for laying of CBL										12  x  Overall Diameter of Cable
25	Recommended pulling force:
	a) When conductor pulled by pulling eye	N									30 x Total Conductor Area in mm2
	b) When cable pulled with stocking	N									5 x D2 where D is the Overall Diameter of cable in mm