សៀវភៅណែនាំអ្នកប្រើប្រាស់ សំណួរ និងចម្លើយចម្លើយ
ថ្ងៃទី 04 ខែសីហា ឆ្នាំ 2025 - 04:25 ព្រឹក
To properly connect the CTs to the អង្គភាពគ្រប់គ្រងកុងតាក់ Schneider Electric SC150អនុវត្តតាមជំហានទាំងនេះ ដូចដែលបានរៀបរាប់នៅក្នុងការណែនាំអំពីការដំឡើង៖
1. Correct Wiring Orientation: When fitting the CTs on the cables, ensure that the HAUT/TOP marking faces upward, and the wire exit is downward. This is crucial for proper installation.
2. Re-insert Shielding: Make sure that the shielding of each MV cable is re-inserted inside the corresponding CT before connecting it to the ground. This step is essential for safety and proper functioning.
3. Grounding Connection: The blue wire on the CT secondary (S2) is internally connected to the blue wire with a round terminal. Connect this blue wire with the round terminal to the same frame ground as the cubicle to ensure proper grounding.
4. Safety Precautions: Always use grounded external CTs for current inputs to prevent electrical hazards. Ensure that all electrical power on the MV network is turned off before working on or installing CTs on the MV cable.
5. Current Sensor Specifications: The current sensors used for measuring must be 1 A or 5 A secondary with a security factor limiting the current to 100 A secondary - 1 s. Always follow the specified standards for current sensors.
6. Proper Tools and Techniques: Use appropriate tools to perform cabling on the connectors, such as a suitable screwdriver and crimped end-pieces. Strip the wires appropriately before connecting them to the connectors as per the recommendations in the installation guide.
By following these guidelines and instructions provided in the Schneider Electric SC150 Switch Control Unit installation guide, you can ensure a safe and proper connection of the CTs to the switch control unit.
បន្ថែមមតិយោបល់ថ្មី។