On June 16, 2020, the first batch of lightning arrester destined for Chile implemented FAT test. A total of 125 pieces of this batch of goods will be divided into 220kv 110kv and 66kv models. They will be shipped to Chile for the project GUARDIAMARINA y SS.EE. La Polvora y Hualqui.

The FAT test content is as follows:

Contents

Surge Arrester Sampling

Number of samples: 9 unit

220kv (No.: 01, 02, 03) / 110kv (

No.: 07, 08, 09) / 66kv (No.: 05, 06)

2. Electrical Test

•D.C. 1mA reference voltage

•A.C . reference voltage

•Residual voltage at nominal discharge current

•Leakage current at 0.75 time of D.C. 1mA reference voltage( μA

•Continuous operating current at

•Continuous operating voltage( μ A)

•Partial discharge level( pC

3. Physical test

•Appearance Arrester size, color and uniformity, Nameplate

•Creepage distance mm

•Connection fitting size and condition

•Galvanized measurement of metal parts

Dingli and Elecnor Chile S.A signed this agreement in March 2019.