Electrical Engineering Guides

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
GIS CT

What to Pay Attention to When Selecting and Installing GIS Current Transformers?

Hi everyone, I'm James, and I've been working with current transformers (CTs) for 10 years. Today, I rsquo;ll talk about what you need to watch out for when selecting and installing GIS current transformers. Part 1: Key Considerations During Selection 1. Accuracy Class Protection-grade CTs: Used for

By James 07/07, 2025
CT

What should be noted when choosing a current transformer for a 10kV station transformer circuit?

Practical Experience Sharing from an Electrical Engineer in the Field By James, 10 Years in the Electrical Industry Hi everyone, I'm James , and I've been working in the electrical industry for 10 years. From early involvement in substation design and equipment selection, to later taking charge of r

By James 07/04, 2025
VT/ PT

Impact Analysis of Voltage Transformer Installation on Line Side vs. Load Side of Power Inlet Circuit Breaker for (ATS)

Automatic backup switching (ABTS) devices are core components ensuring the safe, reliable, and stable operation of factory power grids. Their startup logic strictly follows the dual criteria of "loss of voltage in the working power supply + no - current detection", effectively avoiding misjudgments

By James 07/03, 2025
Dry type transformer

Installation and Commissioning of 10kV Dry-Type Transformers

By James, 10 Years of Electrical Equipment Maintenance Experience Hi everyone, I rsquo;m James, and I rsquo;ve been working in electrical equipment fault repair for 10 years. Over the past decade, I rsquo;ve worked in factories, substations, and distribution rooms of all sizes, involved in the insta

By James 07/01, 2025
Dry type transformer

What aspects need attention during the installation of dry-type transformers?

1 Pre - installation Preparation As a front - line installer, I know very well that the preparation work before installing a dry - type transformer must be thorough. First, I will carefully review the design drawings and technical documents, and check one by one the technical parameters such as the

By James 07/01, 2025

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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

What to Pay Attention to When Selecting and Installing GIS Current Transformers?

What should be noted when choosing a current transformer for a 10kV station transformer circuit?

Impact Analysis of Voltage Transformer Installation on Line Side vs. Load Side of Power Inlet Circuit Breaker for (ATS)

Installation and Commissioning of 10kV Dry-Type Transformers

What aspects need attention during the installation of dry-type transformers?

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