Determining the voltage linearity of a large impulse voltage divider used in the testing of ultra-high-voltage (UHV) equipment is a challenging task. This leads to the question of whether the uncertainty requirements, specified in the present edition of IEC60060 [1, 2], can be met in the UHV range. This paper presents the results of voltage divider linearity tests at voltages up to 2400 kV. Mea...

In most areas of East Java, the economic development still relies on agricultural sector. Meanwihle, since 2008, agroindustry has grown fast in Java. This situation should have impact towards higher growth lieu with lower regional disparity, or speed convergence improvment. However, reality seems to be different, where level inequality Java is far above National level. Thus, this study aims est...

Photocatalytic production of hydrogen peroxide (H2O2) with water and oxygen as clean source is considered to be a sustainable strategy. Resorcinol-formaldehyde (RF) resin has attracted much attention promising polymeric photocatalyst, but the inefficient charge transfer restricts its corresponding photocatalytic efficiency. Herein, design synthesis graphene quantum dots (GQDs) modified RF (RF-G...