High Voltage Transformer Bushing
01
DIN 10NF250 Transformer Bushing Insulators
Video
Size
H=295mm
D=140mm
Creepage Distance: 305mm
Rated Voltage: 10KV
Rated Current: 250A
Usage
The primary usage of a DIN 10NF250 bushing is:
Electrical Connection: To provide a safe and insulated point of connection between the internal low-voltage windings of a distribution transformer and the external electrical circuit (like cables or busbars).
Insulation
To insulate the live low-voltage conductor (carrying up to 250A at voltages up to 1kV) from the grounded metal tank of the transformer. This prevents short circuits and ensures safety.
Sealing
In oil-filled transformers, the bushing also helps to provide a leak-proof seal where the conductor exits the tank, preventing oil from escaping and moisture/contaminants from entering.
Therefore, you will typically find DIN 10NF250 bushings installed on the low-voltage (LV) side of oil-filled distribution transformers used in power grids to step down voltage for commercial or residential use.
Advantages of DIN 10NF250 Transformer Bushing Insulators
DIN 10NF250 Transformer Bushing Insulators offers several key advantages, making it a reliable choice for medium-voltage transformer applications. Here’s why it stands out:
1. High Electrical Insulation Performance
Optimized for Transformer systems with excellent dielectric strength.
Low partial discharge levels, ensuring long-term reliability.
Effective creepage distance design to prevent tracking and flashovers, even in polluted or humid environments.
2. Robust Mechanical Strength
Withstands high mechanical loads (e.g., wind, ice, and conductor tension).
Durable construction (porcelain or composite polymer) resistant to cracking and deformation.
Vibration-resistant, ideal for transformers in industrial or high-load environments.
3. Weather and Environmental Resistance
UV-resistant (if polymer-based) or highly glazed (if porcelain) to prevent degradation.
Hydrophobic properties (in silicone rubber composite types) reduce moisture absorption.
Corrosion-resistant metal parts (e.g., aluminum or stainless steel flanges).
4. Compliance with DIN Standards (German Engineering Quality)
Guaranteed compatibility with European power systems.
Rigorously tested for electrical, thermal, and mechanical performance.
Interchangeable with other DIN-standard bushings, simplifying replacements.
5. Long Service Life & Low Maintenance
Stable performance over decades with minimal aging.
No regular cleaning needed (if using composite insulators with self-cleaning properties).
Resistant to thermal cycling, preventing cracks due to temperature fluctuations.
6. Versatile Applications
Suitable for oil-filled or dry-type transformers.
Used in indoor/outdoor installations (depending on material).
Compatible with renewable energy systems (wind farms, solar substations).