HEAT SHRINK BUS BAR TUBE

CLEA

RA

NC

E W

ITH

INSU

LAT

ION

85

115

200

65

105

150

285

75

55

70

140

35

65

100

190

45

160

220

320

120

VOLTAGE UN-INSULATED BUS BARS (mm)

MEDIUM WALL TUBE (GMB)PH. TO PH (mm) PH TO GR.(mm)

HEAVY WALL TUBE (GHB)PH TO PH.(mm) PH TO GR.(mm)

17.5 KV

24 KV

36 KV

12 KV

Therm

al

01. Accelerated ageing 120 C for 500 hrs ASTM D2671

2 a. Tensile Strength 10 N/mm (Mpa) (min.) ASTM D638

b. Ultimate Elongation 250 % (min.) ASTM D638

2. Low Temp. Flexibility No Cracking ASTM D26710

(-40 C for 4 hrs)

03. Heat Shock (250 C for 30 min.) No cracking or flowing ESI 09-11

04. Shrink Temperature 125 C IEC 216

0 05. Continuous Temp. Limit -40 to +115 C IEC 216

Ele

ctr

ical 1. Dielectric Strength 22 KV/mm.(min.) ASTM D149

142. Volume Resistivity 1 x 10 Ohm.cm min ASTM D257

3. Dielectric constant 5 (max.) ASTM D150

flame failure up to

3.25 KV for 20 min.

4. Resistant to track & erosion No Tracking, erosion or ASTM D2303

Physi

cal

TEST DESCRIPTION RECORDED VALUE TEST METHOD

21. Tensile Strength 12 N/mm (MPA) (min.) ASTM D638

2. Ultimate Elongation 300% (min.) ASTM D638

3. WaterAbsorption 0.5% (max.) ASTM D570

34. Density 1.20 ± 0.2 gm/cm ASTM D792

5. Hardness 45 ± 10 shore D ASTM D2240

TEC

HN

ICA

L S

PEC

IFIC

AT

ION

-: F

EAT

UR

ES &

BEN

IFIT

S :

- 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.

Application ofHeat ShrinkBus Bar Tubes

Technical Qualification Report : QR 1016

Bus Tube is heat shrinkable tube designed to insulate busbar systems up to 36KV & to protect against accidental flashover. The tubes

are manufactured from high quality non tracking crosslinked polyolefin material. Meets ANSI C37.20.2 standards for MV switchgear

application up to 36 KV.

GMB / GHB Series TubesGSC Series Tubes

RoHSREACHCompliance

BUS BAR SELECTION CHART

16 6 30 11 18 7 12GMB 16/6

GMB 25/8

GMB 30/12

GMB 40/16

GMB 50/20

GMB 75/28

GMB 85/32

GMB 100/38

GMB 120/45

GMB 150/60

GMB 180/72

GMB 210/84

GMB 250/100

25

30

40

50

75

85

100

120

150

180

210

250

8

12

16

20

28

32

38

45

60

72

84

100

2.0

2.5

2.5

2.5

2.5

3 .0

3 .0

3 .0

3 .0

3 .0

3 .0

3 .0

3 .0

25

25

25

25

25

25

25

15

25

25

20

20

16

25

33

38

63

69

83

104

132

151

239

264

30

38

50

63

94

107

126

150

200

226

257

314

10

16

21

24

40

44

53

66

84

96

152

168

20

25

32

40

60

68

80

96

127

144

164

200

Medium Wall Tube [Upto 24KV]

GHB 25/8

GHB 30/12

GHB 40/16

GHB 50/20

25

30

40

50

8

12

16

20

3.7

4 .0

4 .0

4 .0

25

25

25

25

20

28

35

45

28

33

45

54

13

18

22

29

20

25

32

40

Heavy Wall Tube [Upto 36KV]

Thin Wall Tube [Up to 3.3KV]

GSC 20/10

GSC 16/8

GSC 30/15

GSC 40/20

GSC 50/25

GSC 60/30

GSC 70/35

GSC 80/40

GSC 100/50

GSC 150/75

GSC 180/90

20

16

30

40

50

60

70

80

100

150

180

10

8

15

20

25

30

35

40

50

75

90

0.78

0.69

0.86

0.96

0.96

0.96

1.10

1.27

1.40

1.40

1.50

100

50

50

25

25

25

25

25

25

25

100

22

16

33

44

53

64

72

86

104

151

179

25

18

38

52

65

75

90

100

125

190

236

14

10

21

28

34

41

46

55

66

96

114

16

12

24

33

41

48

57

64

80

121

150

mm (max.) mm mtrs . min . max. min. max. mm (min .)

Gala Size d Reel length Rectangular Bars(W+B)

D Round BarT (+10% )

Te

ch

nic

al

Dra

win

gs

W W

BOR

B

GMB 65/25 65 25 2.7 25 53 82 34 52

GHB 75/28

GHB 85/32

GHB 100/40

GHB 120/58

75

85

100

120

28

32

40

58

4.0

4.0

4.2

4.2

20

20

20

15

53

69

83

94

69

100

102

125

34

44

53

60

47

68

GHB 65/25 65 25 4.0 25 50 62 32 43

72

85

GHB 205/85

GHB 250/120

205

250

85

120

4.2

4.2

15

15

239

264

250

314

152

168

164

200

GHB 150/60

GHB 180/70

150

180

60

70

4.2

4.2

15

15

168 122

196 160

78

102

105

125