Скачать или смотреть 20. Enjoypowers' Power Quality Course: How to choose the appropriate size of CT

Welcome to our in-depth video on selecting the appropriate Current Transformers (CTs) for active power quality solutions! 🌟

Video Outline
In this video, we guide you through the critical steps involved in selecting the right CTs for measuring currents in power quality projects. Understanding these steps is essential for ensuring accurate detection of harmonic and reactive power components in real-time.

Key Topics Covered:

Introduction to Current Transformers (CTs) in Power Quality Solutions:

Explanation of the role of CTs in measuring currents and detecting harmonic and reactive power components.
Step-by-Step Guide to Selecting CTs:

Step 1: Understand System Voltage Level and Maximum Load Current

Ensure the insulation level of the CT matches or exceeds the system voltage (e.g., 400V, 690V, 10kV).
Example: For a system with a maximum load current of 500A, the CT must be rated to cover this range.
Step 2: Determine the CT's Turns Ratio

Explanation of the CT turns ratio (primary-side current to secondary-side current).
Common turns ratios: 100:5, 200:5, 400:5, etc.
How to set the turns ratio on the AHF (or SVG) HMI.
Step 3: Consider the Accuracy of the CT

Importance of CT accuracy in measuring current.
Common accuracy levels: 0.1, 0.2, 0.5, 1.0 (corresponding to errors of 0.1%, 0.2%, 0.5%, 1.0%).
Recommendation: Select 0.5 class or higher accuracy for power quality projects.
Step 4: Check the Rated Load of the CT

Ensure the rated load meets the requirements of the total impedance of the secondary (impedance when the secondary current is 5A ≥ 5VA).
Practical Example:

Example selection for a power quality project with system voltage 400V and maximum load current 400A.
Typical selection: 400V, 500:5 turns ratio, 0.5 accuracy class, 5VA CT.
Importance of Accurate CT Selection:

How accurate CT selection impacts the performance and reliability of power quality solutions.
Ensuring effective harmonic and reactive power detection for optimal system performance.
Why This Video Matters
Selecting the right Current Transformers is crucial for achieving accurate measurements and ensuring the effectiveness of power quality solutions. This video provides a clear and logical guide to help you make informed decisions for your specific project requirements.

Join us as we explore the essential steps for selecting CTs and demonstrate their practical applications in real-world power quality projects. Don't forget to like, comment, and subscribe for more expert content on power quality and electrical systems! ⚡️

About Enjoypowers
Enjoypowers is the largest power quality manufacturer in China, with a cumulative shipment of 4GW in 2023. Our extensive range of power quality modules (30A-200A) supports various voltage levels (220Vac, 400Vac, 415Vac, 480Vac, 690Vac, 800Vac) and installation options (rack-mounted, wall-mounted, vertical).

Our products integrate seamlessly with:
Schneider BlockSet Cabinets
ABB MNS Cabinets
Siemens SIVACON S8 Cabinets
Eaton xEnergy Cabinets
Rockwell CENTERLINE 2100 Cabinets

Why Power Quality Matters
With the rapid expansion of new energy sources, ensuring high power quality is more crucial than ever. Traditional passive solutions are no longer sufficient, making way for active solutions like AHF and SVG, which offer superior performance at comparable costs.

Learn More
For more information about our products and solutions, visit our website: https://www.enjoypowers.com

Don't forget to like, comment, and subscribe for more expert insights and updates! ⚡️

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