Heat Shrink Bus Bar Sleeve

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Table of Content

5. Selection Chart – Thin Wall Tube [Up to 3.3KV]

6. Selection Chart – Medium Wall Tube [Up to 24KV]

7. Selection Chart – Heavy Wall Tube [Up to 36KV]

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 & Benefits

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.

Applications

Diagram

Selection Chart – Thin Wall Tube [Up to 3.3KV]

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
	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

Selection Chart – Medium Wall Tube [Upto 24KV]

Selection Chart

Medium Wall Tube [Upto 24KV]

Gala Size	D	d	T (±10%)	Reel Length	Rectangular Bars (W+B)		Round Bar Ø mm
	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	15	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

Selection Chart – Heavy Wall Tube [upto 36KV]

Selection Chart

Heavy Wall Tube [upto 36KV]

Gala Size	D	d	T (±10%)	Reel Length	Rectangular Bars (W+B)		Round Bar Ø mm
	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°C 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°C for 4 Hrs.)	No Cracking	ASTM D2671
Heat Shock (250°C for 30 Min.)	No Cracking or flowing	ESI 09-11
Shrink Temperature	125°C	IEC 216
Continuous Temperature limit	-40°C to +115°C	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	57	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

Certificates

FAQs

1. What is a Heat Shrink Shroud?

A Heat Shrink Shroud is a protective sleeve made from cross-linked polymer material that shrinks when heat is applied. It provides insulation, sealing, and mechanical protection for cables, joints, and terminations.

2. How does a Heat Shrink Shroud work?

When heat is applied using a heat gun or torch, the shroud shrinks uniformly and tightly wraps around the cable or joint, creating a secure and sealed covering.

3. What material is Heat Shrink Shroud made of?

It is typically made from cross-linked polyolefin material, often containing carbon black for UV resistance and weather protection.

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