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Apr 13,2026
First, remember this easy-to-remember mnemonic for on-site recall: 1. Ask about the symptoms; 2. Inspect the appearance; 3. Disconnect the fault in sections; 4. Measure parameters; 5. Test run to prevent recurrence. Step 1: Ask (Understand the Fault Symptoms) First, ask the operator to clarify the situation before starting any work: When did it break down? How did it break down? Were there any unu...
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Apr 28,2026
The Electrical Industry is Undergoing a Transformation! Four Core Technologies Supporting the Future of New Power Systems With the advancement of "dual-carbon" goals and the accelerated implementation of new power systems, the electrical industry has long since moved beyond the old model of "traditional operation and maintenance," ushering in a profound transformation towards greening, intelligenc...
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May 05,2026
In power systems, transformers, as core equipment, undertake the crucial task of voltage conversion. However, due to manufacturing defects, environmental factors, and long-term operational wear, various faults frequently occur—oil leakage, abnormal oil levels, damage to the oil conservator bladder, deformation of the cooling system, and abnormal internal noises are common problems. These issues no...
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Jun 09,2026
As global industries continue to modernize, the demand for reliable, efficient, and intelligent power distribution systems is growing rapidly. Manufacturing facilities, commercial buildings, energy projects, and public infrastructure all rely on stable electrical networks to ensure continuous operation. At ZDDQ(Anhui Zhongdian Electric Co., Ltd.), we are dedicated to providing advanced electrical ...
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Jun 13,2026
A factory operates on a three-phase, four-wire power supply system. Recently, due to a break in the external neutral wire and the absence of protective circuits such as zero-sequence current protection in the distribution system, multiple PLCs and instruments were damaged, resulting in production and financial losses. Below, we discuss how to diagnose and prevent neutral wire breakage...
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