Heat Shrinkable Tubes/Heat Shrink Sleeves

Heat Shrink Bus Bar Sleeve

Bus Sleeve is heat shrinkable busbar Sleeve designed to insulate busbar system up to 36kV & to protect against accidental flash-over. The Sleeve are manufactured from high quality cross-linked polyolefin material. Meet ANSI C37.20.2 standard for MV switchgear application up to 36kV.

-: FEATURES & BENIFITS :-

Reduce Busbar clearance.
Prevent Busbar from chemical corrosion effected by strong acid, alkali, salt etc.
Solve the problem of insulation among Busbar in Bus Duct.
Halogen free, flame retardant.
High dielectric strength.
Highly Flexible for use on straight or angled bars without creasing.

Technical Qualification Report : QR 1019

SELECTION CHART

Thin Wall Tube [Up to 3.3KV]

Gala Size	D	d	T (±10% )	Reel length	Rectangular Bars (W+B)		Round Bar Ø
	mm(min.)	mm(max.)	mm	mtrs.	Min.	max.	Min.	max.
GSC 16/8	16	8	0.69	100	16	18	12	12
GSC 20/10	20	10	0.78	100	22	25	14	16
GSC 30/15	30	15	0.86	50	33	38	21	24
GSC 40/20	40	20	0.96	50	44	52	28	33
GSC 50/25	50	25	0.96	25	53	65	34	41
GSC 60/30	60	30	0.96	25	64	75	41	48
GSC 70/35	70	35	1.10	25	72	90	46	57
GSC 80/40	80	40	1.27	25	86	100	55	64
GSC 100/50	100	50	1.40	25	104	125	66	80
GSC 120/60	120	60	1.40	25	110	150	70	96
GSC 150/75	150	75	1.40	25	151	190	96	121
GSC 180/90	180	90	1.50	25	179	236	114	150

Medium Wall Tube [Upto 24KV]

Gala Size	D	d	T (±10% )	Reel length	Rectangular Bars (W+B)		Round Bar Ø
	mm(min.)	mm(max.)	mm	mtrs.	Min.	max.	Min.	max.
GMB 16/6	16	6	1.70	25	11	18	7	12
GMB 25/10	25	10	2.50	25	16	30	12	20
GMB 30/12	30	12	2.10	25	25	38	16	25
GMB 40/16	40	16	2.10	25	33	50	21	32
GMB 50/20	50	20	2.10	25	38	63	24	40
GMB 65/25	65	25	2.20	25	53	82	34	52
GMB 75/28	75	28	2.50	25	63	94	40	60
GMB 85/32	85	32	2.50	25	69	107	44	68
GMB 100/38	100	38	3.00	25	83	126	53	80
GMB 120/45	120	45	3.00	25	104	150	66	96
GMB 150/60	150	60	3.30	20	132	200	84	127
GMB 180/72	180	72	3.00	20	151	226	96	144
GMB 205/85	210	84	3.10	1.5	239	257	152	164
GMB 250/100	250	100	3.10	1.5	264	314	168	200

Heavy Wall Tube [upto 36KV]

Gala Size	D	d	T (±10% )	Reel length	Rectangular Bars (W+B)		Round Bar Ø
	mm(min.)	mm(max.)	mm	mtrs.	Min.	max.	Min.	max.
GHB 25/8	25	8	3.20	25	20	28	13	20
GHB 30/12	30	12	3.50	25	28	33	18	25
GHB 40/16	40	16	3.50	25	35	45	22	32
GHB 50/20	50	20	3.50	25	45	54	29	40
GHB 65/25	65	25	3.50	25	50	62	32	43
GHB 75/28	75	28	3.50	20	53	69	34	47
GHB 85/32	85	32	3.50	20	69	100	44	68
GHB 100/38	100	38	3.70	20	83	102	53	72
GHB 120/45	120	45	3.70	20	94	125	60	85
GHB 150/60	150	60	3.70	15	122	168	78	105
GHB 180/70	180	70	3.70	15	160	196	102	125
GHB 205/85	205	85	3.70	1.5	239	250	152	164
GHB 250/120	250	120	4.20	1.5	264	314	168	200

TECHNICAL SPECIFICATION

TEST DESCRIPTION
RECORDED VALUE
TEST METHOD

Physical

Tensile Strength
9 N/mm² (MPA)(min.)
ASTM D638

Ultimate Elongation
350% (min.)
ASTM D638

Water Absorption
0.5 % (max.)
ASTM D570

Density
1.20 ± 0.2 gm/cm³
ASTM D792

Hardness
45 ± 10 shore D
ASTM D2240

Thermal

Accelerated Ageing
(150^oC for 1200 Hrs)
IEC 60684-2

Tensile Strength
7.7 N/mm² (Mpa)
ASTM D 638

Ultimate Elongation
300 % (Min.)
ASTM D638

Low temperature Flexibility
(-40^oC for 4 Hrs.)
No Cracking
ASTM D2671

Heat Shock (250^oC for 30 Min.)
No Cracking or flowing
ESI 09-11

Shrink Temperature
125^oC
IEC 216

Continuous Temperature limit
-40^oC to + 115^oC
IEC 216

Electrical

Dielectric Strength
22 KV/mm. (Min.)
ASTM D149

Volume Resistivity
1 x 10¹³ Ohm.cm(min.)
ASTM D257

Dielectric Constant
5 (Max.)
ASTM D150

CLEARANCE WITH INSULATION
VOLTAGE	MEDIUM WALL TUBE (GMB)				HEAVY WALL TUBE (GHB)				UN-INSULATED BUSBARS (mm) AS PER IEC 71-2
	PH to PH (mm)		PH to GR (mm)		PH to PH (mm)		PH to GR (mm)
	Rectangular	Round	Rectangular	Round	Rectangular	Round	Rectangular	Round
12 kV	65	55	75	65	35	30	45	40	120
17.5 kV	85	70	105	85	55	50	65	60	160
24 kV	115	95	150	125	70	60	100	90	220
36 kV	200	150	285	205	140	130	190	180	320