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Summary

The nozzle is an insulator which is used as a circuit breaker for SF6 gas. The circuit breaker of SF6 gas opens and shuts an electric-circuit for power- transmission-lines and distribution-lines that are installed in high-voltage substations of more than 66kV.
The nozzle is part of excellent insulation to prevent arcing across two poles.

Lintersection method : The circuit-breaker extinguishes the arc with SF6 gas, in the case of two poles intersecting.

Physical properties of PTFE

Particle size : AVG 20§­ÀÇ PTFE
FILLER : AL2O3, BN, GLASS, MOS2 etc

---------------------------------------- PTFE + AL2O3
PROPERTY
MEASURING METHOD
UNIT
RESULT
Specific gravity
ASTM D4894
g/§¨
2.24
Tensile strength CD
ASTM D4894
§ç
30.6
Elongation CD
ASTM D4894
%
350
Hardness
NEEDLE
SHORE D
63~65


Capability

MAIN NOZZLE : 300KV, 40KA GCB
INNER NOZLE : 145KV 40KA GCB



[ nozzle inner drawing of arc extinguish ]


Molding

Clean process

Operator clothing
The plating is performed on the mold
Clean room of exhaust system


MCT, CNC MACHINING

Processing equipment
Lathe
3 stand
General -purpose milling
1 stand
CNC MACHINING
2 stand
MCT MACHINING
2 stand

Inspection standard (alien substances and defects)

Inner surface
  Size (entire inner surface) L : 0 ¡Â L ¡Â¥õ0.3mm
  Gap : d ¡Ã5mm
  Quantity (standard for a circle of ¥õ20mm) m : 0 ¡Â m ¡Â2 ea

Outer surface

  Size (entire outer surface) L : 0 ¡Â L ¡Â¥õ0.8mm
  Gap : d ¡Ã20mm
  Quantity (standard for a circle of ¥õ100mm) m : 0 ¡Âm ¡Â10 ea