On Load Break Switch(Disconnector)
++++General
FW1 type Outdoor on load break switch (switch disconnector) contained in this list are destined to switch stub lines and ring main lines or transformers( It can be equipped with MV HRC fuse links as short circuit protection function) or for switching under on load conditions.
FW1 type switch comply with IEC/IEEE and DVE-recommendation standards. Especially comply with DIN VDE 0670 part 3 and IEC publication IEC-60265, IEC-129.
++++Service environment
a) Air temperature: Maximum temperature: +75ºC; Minimum temperature:-45ºC
b) Humidity: Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level: Maximum installation altitude: 2500m
d) Ambient air not apparently polluted by corrosive and flammable gas, vaporetc.
e) No frequent violent shake
Features and benefits
Compact design
All steel parts either in stainless steel or hot-dip galvanized
Solid and stable base frame
Main contact with icing protection
Insulators available in porcelain or alternatively in silicone
Minimal sag for the line-connection thanks to the two fixed terminals
Completely maintenance antirust AL alloy -Arc chamber
Switching-off procedure without external arc
Short circuit making capacity under specific conditions possibleFixing on the supporting structure either by clamping (free setting) or screwing (holes in the base frame)
Easy on-site installation and setting
High reliability: up to 1' 000 cycles (depending on the making current)
All conducting parts either silver, nickel or tin-plated
Practically maintenance-free
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