Busbar Sleeve For 66 kv
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.
Extra Heavy Wall Tube [Upto 66KV]
- Gala Size
- D mm
- d mm
- T±10%
- Length
- GEHB 50/20
- 50
- 20
- 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
- GEHB 150/60
- 150
- 60
- 6.2
- 1500
D ,d : internal diameter ;T : Thickness
TECHNICAL SPECIFICATION
- Properties
- Value
- Standard
- 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
- 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
- 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 |