Description
What it is
Medium voltage fuse for short-circuit protection. The HH type (current-limiting, high breaking capacity) interrupts faults in milliseconds, limiting the let-through energy (I²t); there are also expulsion fuses for fuse cutout.
Application
Indicated for the protection of transformers, motors, and capacitors in primary substations and medium voltage networks.
Standard and compliance
Follows the IEC 60282-1 standard, for use in medium voltage installations according to NBR 14039 and NR-10.
Technical specifications
- Type
- Medium voltage fuse
- Standard
- IEC 60282-1
- Application
- Protection of transformers, motors, and capacitors in substations and medium voltage networks
- Voltage class
- 15–36 kV (confirm)
Frequently asked questions
What is the difference of the HH fuse?+
The HH is a current-limiting fuse with high breaking capacity: it interrupts the short-circuit ultra-fast, reducing the peak and let-through energy.
How to size the current?+
It depends on the transformer/load power and the voltage class. Confirm the nominal current (A) and the size (e.g., U6) of the reference.
Which standard does it meet?+
IEC 60282-1 (ABNT NBR IEC 60282-1).
ℹ Enriquecido por cruzamento com fontes técnicas e catálogos de fabricante. A CONFIRMAR no datasheet do fornecedor: seção/bitola, tensão nominal exata, corrente e dimensões.
