Electrical Engineering Guides

Electric transformer

High-Efficiency Production Process of Special Transformers: Process Flow, Quality Control, and Performance Benchmarking

A certain special transformer manufacturing enterprise, which has been producing special transformers such as split - phase - shifting rectifier transformers, rectifier transformers for electrolysis, and transformers for submerged arc furnaces for more than 20 years. Now, an evaluation is made on th

By Leon 07/28, 2025
Electric transformer

What Are the Theories Selection and Applications of Small Neutral Point Reactors in 500kV Substations？

1 Relevant Theories of Small Neutral Point Reactors in 500kV Substations 1.1 Definitions and Roles A reactor is a key power system component that controls the phase relationship between AC current and voltage, divided into inductive and capacitive types. Inductive reactors limit short-circuit curren

By Echo 07/25, 2025
Instrument Transformer

How to Select and Install 35kV Combined Instrument Transformers in Plateau Areas？

In real-world engineering projects, selecting and installing 35kV combined instrument transformers isn't just a matter of "buying and installing" mdash; it requires a comprehensive evaluation of many factors, such as environmental conditions, equipment performance, and maintenance convenience. Only

By James 07/22, 2025
Instrument Transformer

What Key Aspects Matter for Combined Instrument Transformer Installation？

The installation quality of combined instrument transformers directly affects whether they can operate safely and stably. Therefore, during the installation process, several key aspects must not be overlooked mdash; such as foundation construction, grounding, sealing checks, testing and commissionin

By James 07/22, 2025
current transformer

What Are Key Points for Configuration Selection and Installation of Low-Voltage Current Transformers？

1. Selection of Low - Voltage Current Transformer Configuration There are many factors leading to wrong selection of low - voltage current transformers in civil construction projects. For example, common factors include design problems: the calculated coefficient designed for the load of electrical

By James 07/16, 2025
AIS VT/PT

What Are the Essentials for Selecting and Installing 66kV Outdoor AIS Voltage Transformers？

Hey everyone! I'm James, a professional with over 10 years of experience installing voltage transformers. Today, I want to talk about the selection and installation of Air Insulated Switchgear (AIS) voltage transformers in 66kV outdoor substations. These devices are critical for measurement and prot

By James 07/15, 2025
AIS CT

How to select a current transformer?

1 Role of Current Transformers Current transformers are used to sense the magnitude of current and isolate the primary system from the secondary system. The primary winding of a current transformer used in a power system is connected in series in the primary high - voltage system, and the secondary

By James 07/14, 2025
AIS CT

What should be noted when selecting and installing current transformers for air-insulated switchgear?

The selection and installation of current transformers for air-insulated switchgear (AIS CT) directly affect the measurement accuracy, protection reliability, and operational safety of power systems. It is necessary to comprehensively consider equipment characteristics, system requirements, and envi

By James 07/12, 2025
Outdoor VT/PT

What to Pay Attention to When Replacing Siemens Outdoor Voltage Transformers with ABB Ones?

Hey everyone, I rsquo;m James, and I rsquo;ve been working with outdoor voltage transformers (VTs) for 10 years. From the early days of tagging along with my mentor on job sites, wiring up equipment, and debugging systems, to now leading substation projects and dealing with all kinds of complex fiel

By James 07/11, 2025
Outdoor CT

What should be noted when selecting and installing outdoor current transformers?

Hey everyone, I'm James, and I've been working with current transformers (CTs) for 10 years. From running around job sites with my mentor, wiring and debugging equipment, to now leading substation projects and handling all kinds of complex CT issues mdash; I rsquo;ve worked with a lot of outdoor cur

By James 07/09, 2025
GIS VT/ PT

What should be noted when selecting and installing GIS voltage transformers?

In power systems, voltage transformers in GIS (Gas Insulated Switchgear) play a crucial role in voltage measurement and relay protection. Selecting the right model and installing it correctly is vital for the stable operation of the equipment. The following points should be noted regarding selection

By James 07/08, 2025
GIS VT/ PT

Operation Method for PT Resonance in 500kV GIS Switching Station

1. Causes of Resonance A 500kV GIS switching station is designed following the principle of ldquo;primary equipment intelligence and secondary equipment networking rdquo;. The PT high - voltage side has no disconnector and is directly connected to the bus GIS. Through the analysis of fault recording

By James 07/08, 2025

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High-Efficiency Production Process of Special Transformers: Process Flow, Quality Control, and Performance Benchmarking

What Are the Theories Selection and Applications of Small Neutral Point Reactors in 500kV Substations？

How to Select and Install 35kV Combined Instrument Transformers in Plateau Areas？

What Key Aspects Matter for Combined Instrument Transformer Installation？

What Are Key Points for Configuration Selection and Installation of Low-Voltage Current Transformers？

What Are the Essentials for Selecting and Installing 66kV Outdoor AIS Voltage Transformers？

How to select a current transformer?

What should be noted when selecting and installing current transformers for air-insulated switchgear?

What to Pay Attention to When Replacing Siemens Outdoor Voltage Transformers with ABB Ones?

What should be noted when selecting and installing outdoor current transformers?

What should be noted when selecting and installing GIS voltage transformers?

Operation Method for PT Resonance in 500kV GIS Switching Station

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