Silicone rubber fuse cutout A type

3.3-36 kV

Drop out fuse

Product parameters:

  • Outdoor Cut out fuse
  • Rated voltage: 3kV, 10kV, 15kV, 24kV, 27kV, 33kV, 36kV
  • Current up to: 100A, 200A
  • Pole mounted
  • Standard: IEC, ANSI, GB
  • Type name: UNCO-1

General

Drop-out fuse cutout and load switching fuse cutouts are outdoor high voltage protection device. They are connected with the Incoming feeder of the distribution transformer or distribution lines. These are primary used to protect transformers or lines from short circuits and overloads and switching currents. The drop-out fuse unit is composed of insulator supports and a fuse tube, static contacts is fixed on two sides of Insulator support and moving contact Is installed on two ends of fuse tube. The interior of the fuse tube is the extinguishing tube, the exterior is made of phenolic compound paper tube or epoxy glass. Load switching cutout fuse provides stretch auxiliary contacts and arc-extinguishing ex-closure for switching on/off loading current.

In normal operation the fuse link is tightened to form the closed position. In fault current situation, the fuse link melts and an electrical arc is formed. The arc -extinguishing tube Is heated and explosion of gas occurs. This causes high pressure inside the tube and cause the tube to separate from the contacts. The strength of the contact is relaxed once the fuse elements melt

The cutout is now in the open position, the operator needs to switch the current off. Then with an insulated operating bar, the moving contact can be pulled off. The main contact and auxiliary contact is connected.

Standard
All UNISUN transformers are in conformity with IEC standards, Transformers in conformity with specific country standards can also be supplied. (IEEE, GB)

Layout

 

Technical date sheet

 
TypeRated  Voltage
(kV)
Rated  current
(A)
Breaking  current
(A)
Impulse  voltage
(kV)
Power-frequency  withstand  voltage (KV)Creepage  distance  (mm)Weight  (kg)Dimensions  (cm)
UNCO-110-1510010,00011042245738.5×34.5×10.5
UNCO-110-1520012,00011042245738.5 x 34.5×10.5
UNCO-210-1510010,000110402507.338.5 x 34.5×10.5
UNCO-210-1520012,000110402507.338.5 x 34.5×10.5
UNCO-310-151006,000110403407.549x27x11
UNCO-310-152008,000110403407.549x27x11
UNCO-410-1510010,000110402458.548.5x44x13.5
UNCO-410-1520012,000110402458.548.5x44x13.5
UNCO-515-2710010.000125453508.251.5x34x12
UNCO-515-2720012,000125453508.251.5x34x12
UNCO-615-2710010.000125453508.548x35x10.5
UNCO-615-2720012,000125453508.548x35x10.5
UNCO-715-2710010,000125453508.545×34.5×12
UNCO-715-2720012,000125453508.545×34.5×12
UNCO-824-271008,000150505301248.5×34.5×15
UNCO-824-2720010,000150505301248.5×34.5×15
UNCO-1333-361006000170706601556x38x14.5
UNCO-1333-362008000170706601556x38x14.5
UNCO-1433-3610010.0001707072015.563x38x14.5
UNCO-1433-3620012.0001707072015.563x38x14.5
UNCO-1533-361008,0001707082027.568x17x15
UNCO-1533-3620010,0001707082027.568x17x15
UNCO-1633-3610010,00017070720561x34x11.5
UNCO-1633-3620012,00017070720561x34x11.5

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