【 開発目的 】
【 性能 】
■ モールド変圧器 : 50mm（前後左右方向，片側あたり）
■ 油 入 変圧器 : 30mm（ 〃 ）
Earthquake-Resistant Device for Transformers
By minimizing damages to the transformers caused by earthquakes, Earthquake-Resistant Device for Transformers can contribute to our customer’s BCP.
【 Purpose 】
As a result of the affected electric equipment survey conducted immediately after the Great East Japan Earthquake it became clears that tremors to the transformers were the cause of many of the power outages that occurred. If the transformers were damaged, energy supply to the load was disrupted which ultimately led to an impact on customer’s Business Continuity Plan (BCP). Adding to the problem is the fact that transformers are produced upon acceptance of an order, with the manufacturing process taking 2-3 months under normal circumstances; however, in a market where demand outstrips supply this period can be even longer. Consequently, it is critical that much importance is placed on ensuring that transformers are sound and robust.
【 Capabilities 】
The device can be applied to all types of our transformers, which are able to suppress displacement of secondary terminals, within the following lengths.
■ Molded transformer : 50mm (in all directions, one-sided)
■ Oil transformer : 30mm ( 〃 )
Moreover, the performance verification was confirmed via experiments which vibrated the transformers using 3D vibrations which replicated the seismic waves produced by earthquakes.
【 Features 】
Below are three features of our equipment that cannot be found in other manufacturer’s products.
1) The devices can be installed in transformers which are not compliant with JEM-TR252(The old type or combined use with vibration-proof transformers)
2) The device is designed for standard seismic intensity 2.0.
3) The device has been tested to withstand a series of 7.0 earthquakes
※ JEM-TR252 : The guideline by the Japan Electrical Manufactures’ Association (JEMA)