Ultra-high voltage electric contact point

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Tungsten-family electric contact point manufactured by the power metallurgy method provides excellent electrical conduction, hardness, mechanical strength, and resistance to shock, and ARC and abrasion at high contact pressure.

Youngjin Metal developed 80% tungsten + 20% copper electric contact point in 1993, using internal technology only, and provided it to domestic ultra-high voltage breaker manufacturers since then.

 

Type

Composition
(%)

DENSITY

Electric conductivity
 IACS (%)

Hardness
( HRB )

Applications

Copper
Tungsten

20:80

15.1~15.7

32~42

95~105

Extra-high voltage breaker, ARC TIP, GCB, OCB, GLBS, ASS, ARD contact of ACB, and ATS. Contact of the tap conversion transformer, starter contact for automobiles, electrode spot welding tips for discharging process.

25:75

14.3~15.1

37~47

90~100

30:70

13.7~14.5

43~53

85~95

35:65 13.2~14.0

45~55

80~90
40:60 12.8~13.7

47~57

78~90

 

MAKER

G I S

G C B

Hyosung

72.5KV 20KA

145/169KV 40/50/63KA

170KV 31.5/50KA

220KV 40KA

245 / 300KV 50KA

362KV 40 / 63KA

420 / 550 / 800KV

145KV 40/50KA
169KV 40KA
170KV 31.5/50KA

245KV 40KA

362KV 40/50KA

LSIS

170KV 50KA
362KV 50KA

-

Dongnam

170KV 50KA

-