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Fuse disconnect switch FLa 15/6410
medium-voltagehigh-voltage3-pole

Fuse disconnect switch - FLa 15/6410 - Fritz Driescher & Söhne GmbH - medium-voltage / high-voltage / 3-pole
Fuse disconnect switch - FLa 15/6410 - Fritz Driescher & Söhne GmbH - medium-voltage / high-voltage / 3-pole
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Characteristics

Type
fuse
Voltage level
medium-voltage, high-voltage
Number of poles
3-pole
Other characteristics
outdoor
Certifications
VDE
Primary current

400 A, 630 A

VAC

12 kV, 24 kV, 36 kV

Description

The outdoor switch-disconnector FLa 15/6400 and FLa 15/6410 (with fuse holders mounted below) have been developed for upright assembly. The switches comply with the regulations as per DINEN 62271-103 VDE 0671-103.The principle design and mounting dimensions correspond to the outdoor disconnecting switches 6400and 6410 as given in catalogue 751.The arc-extinguishing device which is shunted in the ON position and is of the quick-make, quick-break type, has been adopted from the proven switch-disconnector FLa 15/60 (catalogue 762) which is used as a line sectionalizer. All arching chambers are filled at the factory with approx. 0.5 litres of Shell Diala D switchgear oil. The main application for the switch-disconnectors FLa15/6400 and FLa 15/6410 is as feeder switch for pole mounted transformer stations. The base frames are welded from sectional steel and the operating shaft swhich are mounted in bronze bearings are hot-galvanized. All insulators used in the construction are made of cycloaliphathic cast resin. All contacts with flat terminations in accordance with DIN 46206 and double contact blades are made ofelectrolytic copper are silver-plated and form loop less current paths. The fuse holder contacts are designed to take HVHBC (high-voltage, high breaking capacity fuses)(catalogue 791) in accordance with DIN 43625.Adequate cross sections and suitable contact pressures mean that the switches still function easily and properly after many years of operation. Outdoor operating mechanisms as described in our catalogue 776 are available for operating switch-disconnectors and earthing switches.

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