FZW32-405 series high voltage AC Vacuum load switch is applied in the three-phase, AC50Hz, rated voltage up to 40.5KV, rated current 1250A electric-supplying network. Mainly applied in three-phase RMU net pr ending electric-supply city distribution station and industrial electrical equipments, with load-control and short-circuit protection.
The load switch can match relative manual operation mechanism or electrica motor operation mechanism.
Altitude: below 3000m
Air temperature maximum is +40ºC, minimum is -30ºC.
Relative temperature: diary average ≤95%, monthly average ≤90%
No frequent shrink shock.
1. Vacuum arc blow out, no explosive danger, no need to inspect
2. Isolation knife switch are interactive to three-phase vacuum arc extinguish chamber, obvious fracture exists when breaking.
3. Component parts all adopt stainless steel material, bottom bracket adopts stainless steel material or carbon steel material of hot-galvanized with UV protection coating To ensure device normally run in outdoor environment.
4. Strong breaking capacity, safety, reliable, long electrical life, frequent operation.
5. Widely used in rural network, city network, reconstruction of rail distribution wires
|Rated Voltage ||40.5KV|
|Rated active power load breaking current||1250A|
|5% rated active power load breaking current||62.5A|
|Rated cable charging breaking current||25A|
|Power frequency withstand voltage(1min)||arc extinguishing chamber fracture:68KV|
phase, to earth: 95KV; isolation fracture: 110KV
|lightning impluse withstand voltage(peak)||phase, to earth: 185KV; isolation fracture: 215KV|
|Rated short-time withstand current(Moving reliable current)||25KA|
|Rated short-circuit duration||4s|
|Rated peak withstand current(Moving reliable current)||63KA|
|Rated short-circuit closing current||63KA|
|Manual operation moment||≤300N.m|
|Mechanism life||10000 times|
|Rated active power load current breaking times||>100 times|
|Vacuum extingushing chamber conact admitted wearing thickness||0.6mm|
|Earthing knife switch mechanical life||2000 times|
|Earthing knife switch moving rereliability|| 40KA|
Vacuum arc-extinguish chamber
|Contact open clearnce||13±1mm|
|Average breaking speed||1.4±0.2m/s|
|Three phases closing synchronization||≤5ms|
|Three phases breaking synchronizaton||≤2ms|
|air clearance between charged bodies and to earth ||>420mm|
|Auxiliary circle resistance||400μΩ ≤ R ≤ 1000μΩ |Packing and shipping
|Isolation knife switch pressure||500±50N|
|Inlet outlet ends resistance||≤150μΩ|
|Contact knife final leaving point to static contacts distance small fracture/big fracture||≥180/420mm|
-- Wooden box for products.
-- Shipping mark according to customer's request.
-- Bulk production will be deliveried by sea and air.Our Service
-- We have our own factory, professional manufacturer
-- We can send you samples within one week.
-- We do OEM & ODM services .
-- We control quality strictly, quality problem: 100% compensation or change
Warmly welcome to visit our factory. Welcome customer or your agent to inspect before order or lading.