Fuse Cutouts

The NGTK - Expulsion Fuse Cutout provides safe and reliable protection to the distribution networks. The cutouts are designed to offer excellent protection solutions against system overloads and short circuit fault currents. The unique design phenomenon is to enable rapid fault clearance at a faster time.

Salient features

Resistance to ageing
U.V Retardant
Very High Dielectric Strength
Protection of ingress of moisture
Application Flexibility
Trouble free operation
Outstanding performance

Standards & Design Testing

IS - 9385 - 2
IEC 60282 - 2
NEMA SG-2-1986
ANSI C37.41.1994
ANSI C37.42-J 989

Applications

The Expulsion Fuse Cutouts (DDLO's) is manufactured suitable for system ratings from 10 kV to 36 kV. The main applications of the Expulsion Fuse Cutouts are for protection of overhead distribution systems, transformers and capacitors. These cutouts are compatible for "K" Type and "T" type fuselinks, current ratings from 1 A to 200 A may be used. The selection of the fuselinks depends on the type and rating for a particular application and the type of equipment required to be protected against overloads and other fault currents. For the detail pertaining to the selection of the fuselinks, references shall be taken from the Fuse Selection Chart provided by the manufacturer.

Ratings

The Rating of the Expulsion Fuse Cutouts (DDLO) is expressed in terms of voltage & current rating.

Standard voltage rating are maintained between 1 1/12 kV, 22/24 kV and 33/36 kV.

The fuse cutouts are capable of carrying a maximum current of 100A and 200A.

Hookstick

ESWARI's HookStick is first attached to a universal pole atleast six feet long. It is then positioned across the front of the NGT K Cutout, with the HookStick anchor hung on the attachment hook on the far side of the cutout. The pull ring of the fuse tube or disconnect blade is engaged with HookStick's pull-ring hook and held fast with HookStick's pull-ring latch. As the universal pole is pulled downward with a firm, steady stroke, and as HookStick is extended to its maximum length, the cutout is opened and the current is diverted through HookStick - at the same time HookStick's opening stroke, its internal trigger trips, the charged operating spring is released, the internal contact are separated, and the circuit is positively interrupted.