The NH system is classified among plug-in fuse systems and is composed of: * fuse-base, (possibly including terminal covers and phase barriers) * fuse-link with blade contact * fuse-link replacement device (LV HRC fuse puller) Since the design of this system cannot guarantee non-interchangeabili
ty of rated current, it must be handled by a qualified professional. NH-fuse links gTr are used for the protection of transformers. The time/current characteristic is especially adapted to that of the protected transformer and implies optimal selectivity to NH-fuse links characteristic gG. The fuses can be loaded with 1,3 times nominal current for up to 10 hours. The fuse link operates at 1,5 times nominal transformer current within 2 hours. Features
Maximum transformer capacity (up to 1,3 x In)
Reduction of unnecessary interruption of operation
Precise cut off of overload
Characteristic adapted to the transformer
Resistant to ageing
Selectivity to fuse links gG
High current limiting
High breaking capacity
Easy selection between transformer and fuse link
Applications
Protection of transformers
The NH system is classified among plug-in fuse systems and is composed of: * fuse-base, (possibly including terminal covers and phase barriers) * fuse-link with blade contact * fuse-link replacement device (LV HRC fuse puller) Since the design of this system cannot guarantee non-interchangeability of rated current, it must be handled by a qualified professional. NH-fuse links „gTr“ are used for the protection of transformers. The time/current characteristic is especially adapted to that of the protected transformer and implies optimal selectivity to NH-fuse links characteristic gG. The fuses can be loaded with 1,3 times nominal current for up to 10 hours. The fuse link operates at 1,5 times nominal transformer current within 2 hours.
Features
- Maximum transformer capacity (up to 1,3 x In)
- Reduction of unnecessary interruption of operation
- Precise cut off of overload
- Characteristic adapted to the transformer
- Resistant to ageing
- Selectivity to fuse links gG
- High current limiting
- High breaking capacity
- Easy selection between transformer and fuse link
Applications
- Protection of transformers
