Power Infrastructure
Composite-Housed Metal Oxide Lightning Arresters
ZTT / Jiangdong industrialised the 10–220 kV power-station-type composite-coat metal-oxide arrester in 2017. The arresters use a metal-oxide (MOV) block stack inside a silicone-rubber composite housing built with the same materials and processes as ZTT's composite insulators — high-strength epoxy resin glass fiber tube, advanced silicone rubber shed formula, labyrinth waterproof interfaces and 100% ultrasonic testing on the core.
Features & Characteristics
- ▪Metal-oxide (MOV) block stack in a composite silicone-rubber housing.
- ▪Voltage range 10 kV to 220 kV — industrialised 2017.
- ▪Same silicone rubber and core-rod technology as ZTT composite insulators.
- ▪Labyrinth waterproof end-fitting interface and ultrasonic-tested core.
Applications
- ▪Overvoltage protection at 10 – 220 kV power stations and substations.
- ▪Overhead line surge protection on distribution and sub-transmission systems.
- ▪Retrofit projects replacing porcelain-housed arresters.
Technical specifications
- Type
- Composite-housed metal-oxide surge arrester (power-station type)
- Voltage range
- 10 kV – 220 kV
- Housing material
- HTV silicone rubber over epoxy-resin glass fiber tube
- Industrialisation year
- 2017 (Jiangdong / ZTT)
- Applicable standards
- IEC 60383, IEC 61109, IEC 62217
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