Electrical Engineering Guides

Electric transformer

Managing Microbial Contamination in Specialty Transformer Oil: Causes, Effects, and Treatment Methods

1 Overview Cases of transformer oil contaminated by microorganisms have been reported both domestically and internationally. Individual transformer manufacturers, user units, and research institutions have conducted specialized studies, but all focused on power transformers. This paper targets speci

By Rockwell 07/28, 2025
Electric transformer

Vibration Monitoring and Fault Diagnosis for High-Voltage Shunt Reactors

1 Vibration Monitoring and Fault Diagnosis Technology for High - Voltage Shunt Reactors 1.1 Measuring Point Layout Strategy Vibration characteristic parameters (frequency, power, energy) of high - voltage shunt reactors are fully recorded in operation logs. For vibration analysis, focus on resolving

By Felix Spark 07/24, 2025
Instrument Transformer

Principles Faults and Online Diagnosis of Electronic Current Transformer Secondary Circuits

1 Principle and Role of Electronic Current Transformers 1.1 Working Principle of ECT An Electronic Current Transformer (ECT) is a key device for managing safe power system operations, converting large currents into manageable small-current signals for measurement and control. Unlike traditional tran

By Felix Spark 07/22, 2025
Combined transformer

What Technical Means Are Used for 35kV Combined Transformer Fault Diagnosis？

For fault diagnosis and handling of 35kV combined transformers, the following technical means can be adopted: Insulation Fault Diagnosis Use equipment such as high-voltage test transformers, power frequency withstand voltage testers, and partial discharge detection systems to conduct a comprehensive

By Felix Spark 07/21, 2025
current transformer

What Are the Common Faults of Low-Voltage Voltage Transformers and Their Solutions？

Open - Circuit Fault on the Secondary Side Open - circuit in the secondary side is a typical fault of low - voltage voltage transformers, showing abnormal voltmeter readings (zero/fluctuation), faulty power meters, buzzing noises, and core overheating. When open - circuited, the secondary voltage sp

By Felix Spark 07/18, 2025
current transformer

Impact of Long-Term Immersion on Epoxy-Insulated Low-Voltage Current Transformers

1 Introduction Low - voltage current transformers for metering, with a through - core type epoxy resin structure, are widely used in distribution transformer areas and for small - to - medium - sized industrial and commercial electricity consumption. As a range expander for electric energy metering,

By Felix Spark 07/17, 2025
current transformer

What Are Common Faults of Low-Voltage Current Transformers and How to Handle Them？

Low-voltage current transformers, as indispensable measurement and protection devices in power systems, often encounter various faults when used in combination with other power equipment due to environmental factors, equipment linkage issues, and improper installation and maintenance. These faults n

By Felix Spark 07/17, 2025
AIS VT/PT

How to Solve Single-Phase Grounding Fault Judgment for 3-Phase 4PT in Ungrounded Systems？

In 10 kV and 35 kV ungrounded systems, single - phase grounding faults cause minimal current, so protection rarely trips. Per regulations, operation is limited to 2 hours; prolonged undetected faults may worsen, even damaging switches. While the State Grid promotes small - current grounding line sel

By Felix Spark 07/15, 2025
AIS VT/ PT

What Are the Common Failures of AIS Voltage Transformers?

Hey everyone! I rsquo;m Felix, a 10-year veteran in the power system industry. Today, we rsquo;re going to dive into an important topic mdash; what are the common failures of Air Insulated Switchgear (AIS) voltage transformers? How do you identify these issues, and how can they be resolved? Let rsqu

By Felix Spark 07/14, 2025
AIS CT

Fault Analysis and Diagnosis on Current Transformer

Current transformers are numerous in substations and are key equipment to ensure the normal operation of the system. If a current transformer fails, it will cause the circuit breaker to trip and may even evolve into a power outage event, which will have an adverse impact on the safe and stable opera

By Felix Spark 07/14, 2025
AIS CT

What does the maintenance of current transformers involve?

Fault Prevention and Handling of Current Transformers 1 Handling of Oil Leakage in Current Transformers Oil - immersed current transformers are most prone to oil leakage. Common oil - leakage parts mainly include the secondary outlet box, the upper and lower sealing surfaces of the porcelain sleeve,

By Felix Spark 07/14, 2025
AIS CT

What does the maintenance of current transformers involve?

1 Basic Operation Requirements The technical parameters of current transformers shall meet the actual operation needs. Carefully check the nameplate of the current transformer to confirm whether its technical parameters meet the requirements. Current transformers for metering must be selected with r

By Felix Spark 07/14, 2025

Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

All

Managing Microbial Contamination in Specialty Transformer Oil: Causes, Effects, and Treatment Methods

Vibration Monitoring and Fault Diagnosis for High-Voltage Shunt Reactors

Principles Faults and Online Diagnosis of Electronic Current Transformer Secondary Circuits

What Technical Means Are Used for 35kV Combined Transformer Fault Diagnosis？

What Are the Common Faults of Low-Voltage Voltage Transformers and Their Solutions？

Impact of Long-Term Immersion on Epoxy-Insulated Low-Voltage Current Transformers

What Are Common Faults of Low-Voltage Current Transformers and How to Handle Them？

How to Solve Single-Phase Grounding Fault Judgment for 3-Phase 4PT in Ungrounded Systems？

What Are the Common Failures of AIS Voltage Transformers?

Fault Analysis and Diagnosis on Current Transformer

What does the maintenance of current transformers involve?

What does the maintenance of current transformers involve?

Recommended Topics