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As a dedicated manufacturer with over a decade of experience, Jinhua Dika Electrical Equipment Co., Ltd. specializes in producing high-precision electrical measurement components for the global power industry. Our Single-phase LZZBJ9-10A Indoor Current Transformer is engineered to meet the rigorous demands of modern energy management, providing reliable and accurate current measurement for billing, protection, and monitoring systems. This product exemplifies our commitment to quality, which is underpinned by our comprehensive management system certifications, ensuring consistent performance and durability for our clients worldwide.
This indoor current transformer is designed for precise electrical energy measurement in medium-voltage applications. Its core function is to step down high primary currents to standardized, safe, and measurable secondary levels, enabling accurate monitoring by meters and protective relays.
- High Precision Measurement: The 0.2S accuracy class is a standout feature, indicating exceptional performance at low loads. This level of precision is crucial for revenue metering where even minor discrepancies can lead to significant financial implications over time.
- Robust Construction for Indoor Use: Built with high-grade materials and advanced resin casting technology, the transformer offers excellent insulation, moisture resistance, and mechanical strength, ensuring stable operation in controlled indoor environments like substations and switchgear cabinets.
- Wide Compatibility: With a 10kV voltage rating, it is suitable for a broad range of medium-voltage power distribution networks commonly found in industrial plants, commercial buildings, and utility installations.
- Safety and Reliability: The design prioritizes operational safety, effectively isolating the high-voltage primary circuit from the low-voltage secondary instrumentation, protecting both equipment and personnel.
The technical specifications of the LZZBJ9-10A are detailed below to provide a clear understanding of its capabilities:
| Parameter | Specification |
|---|---|
| Model | LZZBJ9-10A |
| Rated Primary Current (Ip) | Customizable (e.g., 100A, 200A, 400A, 600A) |
| Rated Secondary Current (Is) | 5A or 1A (Standard) |
| Accuracy Class | 0.2S |
| Rated Insulation Level | 10kV / 42kV (Power Frequency Withstand / Lightning Impulse) |
| Rated Output (VA) | 5VA, 10VA, 15VA (Selectable) |
| Frequency | 50Hz / 60Hz |
| Thermal Short-time Current (Ith) | Specified based on primary current rating |
| Dynamic Current (Idyn) | Specified based on primary current rating |
For clients, the benefits are direct and impactful: You gain a measurement device that minimizes energy accounting errors, enhances the reliability of your protection schemes, and requires minimal maintenance due to its solid construction. This translates into improved operational efficiency, reduced financial risk from metering inaccuracies, and long-term cost savings on equipment lifecycle.
Our operational strength provides a solid foundation for your trust. With an annual export value ranging between US$1 Million and US$1.5 Million and a presence in major markets across North America, Southeast Asia, Europe, and beyond, Dika Electrical has proven its capability to deliver on a global scale. We ship efficiently from key ports like Shanghai, Tianjin, Guangzhou, and Ningbo. Our manufacturing processes are guided by a robust framework of international standards, including ISO 9001 for quality management and ISO 14000 for environmental management. Choosing the LZZBJ9-10A means partnering with a reliable manufacturer committed to precision, durability, and customer satisfaction. Contact us today to discuss your specific requirements and discover how our current transformers can optimize your electrical systems.
Frequently Asked Questions (FAQ)
Q1: What does the "0.2S" accuracy class mean for this current transformer?
A1: The "0.2S" designation indicates a high-precision class suitable for revenue metering. It guarantees that the measurement error is within ±0.2% of the actual current value over a specified range, typically from 1% to 120% of the rated current. The "S" denotes a special extended range, offering superior accuracy at very low loads compared to standard 0.2 class transformers.
Q2: Is this transformer suitable for outdoor installation?
A2: No, the LZZBJ9-10A model is specifically designed for indoor applications. Its insulation and construction are optimized for controlled environments free from direct rain, excessive dust, and wide temperature fluctuations. For outdoor use, please inquire about our range of outdoor-type current transformers.
Q3: Can you provide custom primary current ratings?
A3: Yes, as a manufacturer, we offer a high degree of customization. While standard ratings are available, we can produce units with specific primary current ratings (e.g., 150A, 300A, 800A) to match your exact system requirements. Please provide your specifications for a tailored quotation.
Q4: What is the difference between a 5A and a 1A secondary current output?
A4: The secondary current (5A or 1A) is the standardized output signal to connected meters and relays. A 1A output is often preferred for long-distance cable runs as it reduces power loss (I²R loss) in the connecting wires. The choice depends on your existing system design and the connected devices' input requirements.
Q5: What standards does this current transformer comply with?
A5: Our LZZBJ9-10A is designed and tested in accordance with international standards such as IEC 61869-1 and IEC 61869-2, which cover instrument transformers for measurement and protection. This ensures global compatibility and performance reliability.
Q6: How do I determine the required VA (Volt-Ampere) burden rating?
A6: The VA rating indicates the transformer's capacity to supply power to connected devices (meters, relays, cables). You need to sum the burden (in VA) of all devices in the secondary circuit and the connecting wires. We recommend selecting a transformer with a VA rating slightly higher than your calculated total to ensure accurate performance. Our technical team can assist you with this calculation.
Q7: What is the typical delivery time for this product?
A7: For standard models, we generally maintain stock for prompt shipment. For customized orders, the lead time typically ranges from 15 to 30 working days, depending on the order quantity and specification complexity. Exact timelines will be confirmed upon order placement.
Q8: Do you provide installation guidance or technical support?
A8: Absolutely. We provide detailed product datasheets, wiring diagrams, and installation manuals with each shipment. Our engineering team is also available to offer technical support for system integration and answer any application-specific questions you may have.
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