General
Piree-phase combined type combined overcoat zinc oxide lightning arrest, one kind of naw type protecting elsctric equipment for protecting the Insulation of electric equipment term over-voltage harm Jt restricts the over-voltage among phases effectively while restricting the over-voltage between phase and ground .It Is wrdely used for protectlno vacuum switch .rotating electrical machines, parallel connector compensation capacitor ,power plant and transformer substation and eo on. The combined type lightning arrester has run for several decadss of years. The practice proves that It Is an operable measure lor effectively restricting ovar-voltaga among phases. Inside the lightning arrester .with good voltage-current charactariaiio and absorbing over-voltage capacity, large capacity zinc oxide resistance piece Is used as main component which provide reliable protection for protected equipments- H Is widely selected and usod forelecirlo power system at present.
Technical Standard
National standard GB 11032-2010 gapless metal oxida lightning arrester is implamBntBd for product. J B/T 8952-2005 combined overcoat galpess metal oxide lightning ar raster for AD system. JB/T14096-2005 AD three-phase combined type gaplless metal oxldo lightning arrestor.
Product Features
1. Use four components star shape conneclion design, thus obtain the protection between phase and ground and among phased; for the crafty allowance In structure one combined type lightning arrestor plays an role of six common lightning arresters, ovenxme the disadvantage that three lightning arresiera can not protect over-voltage among phases at the same time.
2. Combined type structure, small in dimension and light in weight, llexible in installation, greatly utilize and reduce th© application room; especially suitable for the Installation In the switch cabinet.
3. Silicon rubber overcoat uses one step pressing o1 die stamping .with good sealing, ami-pollution, explosion proof and damp proof performance .high dielectriG strengih, leakAge trace proof( anti-electric eroaion, heat poof(cold resistant and aging resistant and aging resistant performance.
4. Combined type lighting arrester can bo either gapless type or series connection gap type.
Sevice Conditions
a. Height above sea level is not above 1 SOOmeters
b. Ambient temperaiure:-40aC- +4(TC
c. The max wind velocity la not beyond 35m/s
d. Earthquake Intensity, the area ot 7 degree or below
b. Power voltage exerted on lightning arrsstsr for long periods is not beyond the oontinuous operating voltage of lighting arrester f. Power frequency:48HZ-62HZ
Model Dascrlpltlon
User Notice
1. In transportation, storage .opening box and installation, never strongly bump; prior to usage chock whether the appearance ia in order.
2. Prior to putting into U8e( m&asur© DC.U1 mA,its value shall not be less than regulated value; measure leakAge cunent lx under 75% u1Ma,lx^50MA, after putting into use, regularly (five years) measure DC.ul mA one time, compare with the initial value, the change rate shall not above ±5%
3. Do ne«d the special maintenance and clean,
Three phase composite zinc oxide arrester model list
Current three phase composite zinc oxide arresters are under the transition period from old models to models regulated In the new trade standard JB/T 8459-2011 Product Model Formulation Method for Arresters .To facilitate our clients to make rational model saiection on products purchase and wipe away the misunderstandings In applications, our company lists the modelsandfunctlonsof several products In the following table for reference and application of our clients
Technical Parameters Of Three Phase Modular Lighting Arrestfir
