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Busbar Sleeve For 66 kv

Bus tubes

Bus Tube is heat shrinkable tube designed to insulate busbar systems up to 66KV & to protect against accidental flash-over. The tubes are manufactured from high quality non tracking cross-linked polyolefin material. Meets ANSI C37.20.2 standards for switchgear application up to 66 KV.

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.
Bustube
Extra Heavy Wall Tube [Upto 66KV]
  • Gala Size
  • D mm
  • d mm
  • T±10%
  • Length
  •  
  • (min .)
  • (max.)
  • mm
  • mm
  • GEHB 50/25
  • 50
  • 25
  • 6.2
  • 1500
  • GEHB 75/28
  • 75
  • 28
  • 6.2
  • 1500
  • GEHB 100/38
  • 100
  • 38
  • 6.2
  • 1500
  • GEHB 120/45
  • 120
  • 45
  • 6.2
  • 1500
  • GRT(HW) 85/30
  • 85
  • 30
  • 5
  • 1.5
  • GRT(HW) 100/38
  • 100
  • 38
  • 5
  • 1.5
  • GRT(HW) 120/45
  • 120
  • 45
  • 5
  • 1.5
  • GRT(HW) 140/50
  • 140
  • 50
  • 5
  • 1.5

D ,d : internal diameter ;T : Thickness

TECHNICAL SPECIFICATION
  • Properties
  • Value
  • Standard
  • Physical
  •  
  •  
  • Tensile Strength
  • 12 N/mm2 (MPA)(min.)
  • ASTM D638
  • Ultimate Elongation
  • 350% (Min.)
  • ASTM D638
  • Density
  • 1.20 ± 0.2 gm/cm3
  • ASTM D792
  • Hardness
  • 45 ± 10 Shore D
  • ASTM D2240
  • Water Absorption
  • 0.5 % (max.)
  • ASTM D570
  • Thermal
  •  
  •  
  • Accelerated Ageing
  • (120oC for 500 Hrs)
  • ASTM D2671
  • a. Tensile Strength
  • 10 N/mm2 (Mpa) (min.)
  • ASTM D 638
  • b. Ultimate Elongation
  • 250 % (min.)
  • ASTM D638
  • Low temperature Flexibility (-40oC for 4 Hrs.)
  • No Cracking
  • ASTM D2671
  • Heat Shock (250oC for 30 Min.)
  • No Cracking or flowing
  • ESI 09-11
  • Shrink Temperature
  • 125°C
  • IEC 216
  • Continuous Temperature limit
  • -40°C to + 105° C
  • IEC 216
  • Electrical
  •  
  •  
  • Dielectric Strength
  • 22 KV/mm. (Min.)
  • ASTM D149
  • Volume Resistivity
  • 1 x 1014 Ohm.cm(min.)
  • ASTM D257
  • Dielectric Constant
  • 5 (Max.)
  • ASTM D150
  • Resistant to track & erosion
  • No Tracking, erosion or flame failure up to 3.25 KV for 20 min.
  • ASTM D2303
Clearances With Insulation
  • Voltage
  • Phase to Phase (mm)
  • Phase to Ground (mm)
  • UN-INSULATED BUS BARS
  • 66 KV
  • 390
  • 520
  • 630
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