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Help CenterOpen Type Current Transformer LMZK-10 for 10kV System, 150/5A Ratio
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As a professional manufacturer of electrical equipment, Jinhua Dika Electrical Equipment Co., Ltd. is proud to introduce our high-performance Open Type Current Transformer LMZK-10. Engineered for robust and reliable operation in demanding 10kV power distribution systems, this current transformer is designed to provide accurate and stable current measurement for energy metering, protection relays, and system monitoring. With over a decade of experience serving global markets and a commitment to stringent quality control, we deliver products that ensure the safety and efficiency of your electrical infrastructure.
The LMZK-10 is a window-type (open-type) current transformer, meaning it can be conveniently installed around an existing busbar or cable without the need to disconnect the primary conductor. This feature significantly reduces installation time and cost. Its primary application is in medium-voltage switchgear, ring main units, and outdoor substations where precise current sensing is critical for system protection and revenue metering.
Core Product Features & Technical Advantages:
- Open Core Design: Allows for easy installation and maintenance on live busbars or cables, minimizing downtime.
- High Accuracy: Available in accuracy classes such as 0.5 and 0.5S, ensuring precise measurement for billing and protection purposes.
- Robust Insulation: Utilizes high-quality epoxy resin or composite insulation materials, providing excellent dielectric strength and long-term stability in 10kV environments.
- Wide Dynamic Range: The 150/5A ratio is suitable for a broad range of load currents, offering flexibility in various applications.
- Compact & Lightweight: Designed for space-constrained installations within switchgear panels.
- Low Power Loss: Optimized magnetic core design reduces losses, enhancing overall system efficiency.
- Customizable Options: We offer various ratios, accuracy classes, and secondary output configurations (e.g., 1A or 5A secondary) to meet specific project requirements.
Detailed Technical Specifications:
| Parameter | Specification |
|---|---|
| Rated System Voltage | 10 kV |
| Standard Current Ratio | 150/5 A (Other ratios available) |
| Accuracy Class | 0.5, 0.5S, 1.0 (Typical options) |
| Rated Frequency | 50Hz / 60Hz |
| Rated Thermal Short-Circuit Current (Ith) | Specification available upon request |
| Rated Dynamic Current (Idyn) | Specification available upon request |
| Insulation Class | Class A or higher as per standard |
| Ambient Temperature Range | -25°C to +40°C (Operating) |
Benefits for Your Project:
- Reduced Installation Costs: The open-type design eliminates the need for primary conductor disassembly.
- Enhanced Safety: Reliable insulation and construction protect personnel and equipment.
- Improved System Reliability: Accurate current data ensures protective devices operate correctly, preventing faults.
- Future-Proof: Customizable specifications allow the CT to adapt to potential system upgrades.
- Global Compatibility: Designed to meet international standards like IEC 61869, facilitating use in projects worldwide.
Frequently Asked Questions (FAQ):
Q1: What is the main advantage of an open-type current transformer like the LMZK-10?
A: The primary advantage is installation flexibility. It can be mounted around an existing energized busbar or cable, saving significant time and labor compared to through-type CTs which require conductor disconnection.
Q2: Can I get the LMZK-10 with a current ratio other than 150/5A?
A: Yes. As a manufacturer, we offer customization. Common alternative ratios like 200/5A, 100/5A, or 300/5A are available. Please inquire with your specific requirements.
Q3: Is this current transformer suitable for both metering and protection applications?
A: Yes, but the required accuracy class may differ. For precision energy metering (billing), classes like 0.5S are recommended. For protection relays (overcurrent, differential), class 5P or 10P might be specified. We produce units for both applications; please specify your intended use.
Q4: What standards does this product comply with?
A: The LMZK-10 is manufactured in compliance with international standards such as IEC 61869 and equivalent national standards (e.g., GB 1208 in China). Detailed test reports can be provided.
Q5: How do I determine the correct CT ratio for my application?
A: The ratio is selected based on the maximum expected load current in your system. It should be higher than the maximum load but within the CT's accurate measurement range. Our technical team can assist you in selection.
Q6: What is the delivery lead time for standard and customized orders?
A: Standard models (like 150/5A) typically have shorter lead times. For customized ratios or special specifications, lead time may vary. We provide clear timelines upon order confirmation.
Q7: Do you provide technical support during installation?
A: Yes, we offer comprehensive technical documentation, including wiring diagrams and installation manuals. Further support is available upon request.
Q8: What are the packaging and shipping terms?
A: Products are securely packed in wooden cases for export. We ship from major Chinese ports like Shanghai, Tianjin, Guangzhou, and Ningbo, with extensive experience delivering to markets worldwide.
Trust in Jinhua Dika Electrical Equipment Co., Ltd. is built on a solid foundation of quality and global experience. Our annual export value of US$1-1.5 million and presence in diverse markets across North America, South America, Europe, Asia, Africa, and Oceania attest to the reliability and acceptance of our products. Our operational framework is guided by a commitment to quality management principles. The LMZK-10 Open Type Current Transformer embodies this commitment, offering a dependable, cost-effective solution for your 10kV system needs. Contact us today to discuss your specifications, request samples, or place an order for a product designed to perform.
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