HY5WZ series 6kv to 110kv Metal Oxide Surge Arrester (gapless
lightning arrester)
2. Environmental Conditions
3. Parameters
The zinc oxide arrester is the most advanced over-voltage protector
in the world, Due to make the risistor disc of core componet mainly adopt zine
oxide arrester. Compared with the conventional silicon carbide arrester, this
presciption of the product improves gr-eatly the volt-Ampere
characterisics of the resistor disc and increased through-current
capability at over-voltage so as to dring a rad-ical changes for
the characteristics of the arresters. Under the circumstance of
normal operating voltage, the current through the arrester is just
on microampere degree, When suff-ered from over-voltage, the arrester's excellent nonlinear characteristics will make the
current through the arrester incrase to several thousand amperse, while the arrester will be under the circulating state and release
over-voltage energy so as to protecting the power transmission
equipments against the demage caused by th over-voltage.
Usage & Feature
The Zinc Oxide lighting arrester protects the electrical equipments
in AC power systems against being damaged by atmos-pheric
over-voltage and operational over-voltage.
Pollution resistance, stable performance , best of creepage
distance , aunti-fouling .
The switch room consists of various functional circuits(including
grounding switches and load switches) sealed in the metal casing
and busbar between them. The shell is made of 3-inch cold rolled
steel plate(or unembroidered steel plate) welded. Each functional
loop includes a load switch and a grounding switch. The load switch
is composed of a vertical moving contact system and a static
contact at the lower end. When the switch is closed, the contact
moves downward and the load switch is connected. The ground switch
is composed of a moving contact knife and a static contact knife.
The upper and rear of the switch room are provided with 4
rectangular assemblers, and the front of the loop cabinet is
provided with observation Windows. An explosion-proof device is
installed at the rear of the ring cabinet.
parameter: It is used to limit the overvoltage hazard of the
parallel capacitor bank during operation of the vacuum switch and
the oil-less switch, protect the capacitor bank from damage and
absorb the energy of overvoltage.
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