DescriptionDrop-out fused cut out and load Switching fuse cutout
are of outdoor used high voltage protective device.To be connected
with incoming feeder of distribution line it mainly protect
transformer or lines from shortcircuit and overload, and on/off
loading current.Standard: IEC 60282-2 ComponentsDrop-out
fused cut out is composed of insulator supports and fuse tube.
Static contacts is fixed on insulator support and moving contact is
installed on two ends of fuse tube. Fuse tube is composed of:1.
Inside arc estinguishing tube2. Outer phenolic compound paper tube
or epoxy glass tubeLoad switching fuse cutout provides enforced
elastic auxiliary contacts and arc-extinguishing enclosure for
switching on/off loading current. Operating Principle1. When
working normally, fuse link tightened the fuse tube to be close
position.2. If system occur faults, big fault current melts fuse
immediately and take place electric arc, which makesarc
extinguishing tube being heated and explode a lot of gases. This
will produce high pressure and blow off the arc along with tube.3.
After fuselink melt moving contact has no tightened strength,
mechanism is locked and fuse tube dropout.4. Cutout now is in
open position. Operator shall use insulating Link Rod to pull the
moving contact.Main ParameterTypeRated Voltage (kV)Rated Current
(A)Breaking Current (A)Impulse Voltage Bil (BIL)Power Frequency
withstand voltageLeakage Distance (mm)Weight (kg)Dimension
(cm)HRW-1212100630011040250640X36X11.5HRW-121220010000110402506TypeRated
Voltage (kV)Rated Current (A)Breaking Current (A)Impulse Voltage
Bil (BIL)Power Frequency withstand voltageLeakage Distance
(mm)Weight (kg)Dimension
(cm)HRW-333310010000170708501290X40X17HRW-3333200125001707085012 /*
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