Porcelain lighting arrester 33kV

6-72 kV

Surge arrester

Product parameters:

  • Lighting arrester
  • Rated voltage: 3kV, 10kV, 15kV, 24kV, 27kV, 33kV, 36kV
  • Current up to: 100A, 200A
  • Pole mounted
  • Standard: IEC, ANSI, GB
  • Type name: YH5W, YH10W

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 voltageMaximum continuous
operation voltage
Max.
residual voltage
2000 μs Square wave
current Impulse withstand
4/10 μs
High current impulse
Steep Current ImpulseSwitching
current impluse
Lightning
Current impulse
kV(rms)kV(rms)kV(crest)kV(crest)kV(crest)A (crest)kA(crest)
YH5W-332.559.57.7910065
YH5W-665.11915.41810065
YH5W-997.6528.523.12710065
YH5W-10108.336273010065
YH5W-11119.538.5303310065
YH5W-121210.23830.83610065
YH5W-151512.747.538.54510065
YH5W-181815.35746.25410065
YH5W-21211766.553.96310065
YH5W-242419.57661.67210065
YH5W-272721.985.569.38110065
YH5W-303024.49576.59010065
YH5W-333326.810484.79910065
YH5W-36362911492.410810065
YH5W-424234.1132.3100.112610065
TypeRated voltageMaximum continuous operation voltageMax. residual voltage2000 μs Square wave current Impulse withstand4/10 μs
High current impulse
Steep Current ImpulseSwitching current impluseLightning Current impulse
kV(rms)kV(rms)kV(crest)kV(crest)kV(crest)A (crest)kA(crest)
YH10W-332.559.57.79250100
YH10W-665.11915.418250100
YH10W-997.6528.523.127250100
YH10W-10108.3362730250100
YH10W-11119.538.53033250100
YH10W-121210.23830.836250100
YH10W-151512.747.538.545250100
YH10W-181815.35746.254250100
YH10W-21211766.553.963250100
YH10W-242419.57661.672250100
YH10W-272721.985.569.381250100
YH10W-303024.49576.590250100
YH10W-333326.8104.584.799250100
YH10W-36362911492.4108250100
YH10W-424234.1133100.1126250100
YH10W-484839152126150400100
YH10W-545443171139162400100
YH10W-606048208160180400100
YH10W-666653.4230172198400100

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