Transformer Testing Instrument

Product Overview

When alternating voltage exists at both ends of a high-pressure sleeve, the medium inside the insulator becomes polarized, causing fixed charges to redistribute or the centers of positive and negative charges to shift. As the polarity of alternating current alternates continuously, this redistribution of charges also occurs ceaselessly, a process known as charging and discharging. This charging and discharging process involves the flow of current, which we refer to as capacitive current. In an ideal state, the flow of capacitive current only transfers energy without any loss, thus no heat is generated during this process.

However, in reality, under the influence of an electric field, insulators will irreversibly convert a portion of electrical energy into heat, resulting in loss known as dielectric loss. If the dielectric loss is significant, the heat generated from the conversion of electrical energy will increase the temperature of the dielectric, leading to gradual heating and aging (brittleness, decomposition, etc.). If the temperature continues to rise, it may even melt or char the dielectric, losing its insulating properties and causing thermal breakdown. The magnitude of dielectric loss is an important indicator of insulating performance.

ED8010The Type Transformer Bushing Insulation Online Monitoring System is used for continuous dielectric loss measurement of the main transformer's three-phase bushings. This device features an integrated structure, employs Fourier Transform Digital Filtering technology, and offers fully automatic and intelligent measurement, ensuring highly stable measurement data even under strong interference. The measurement results are displayed on a large-screen LCD.