Overview of JLS-10 Outdoor Oil-Immersed Combined Transformer

The JLS-6, JLS-10 Outdoor Oil-Immersed Combined Transformer is an advanced power metering solution designed for outdoor applications. Featuring a moisture-proof device integrated into the oil tank, this model effectively prevents humidity ingress, extending service life while offering greater capacity, compact dimensions, and reduced weight. Its three-phase V/V wiring ensures efficient and precise measurement of current, voltage, and energy.

This transformer is ideal for AC50-60Hz circuits, with rated voltages up to 10kV, supporting diverse applications in rural and industrial substations. With the option for active and reactive energy meters, it is the perfect replacement for traditional oil-immersed transformers.

Type Designation: JLS-10 Combined Transformer

• J: Voltage Transformer
• L: Current Transformer
• S: Three-phase, Oil-immersed Type
• 10: Rated Voltage Class

This type designation provides a concise overview of the key structural and functional characteristics of the JLS-10 Oil-Immersed Combined Transformer

Construction of the JLSZW-6 Combined Transformer

The metering tank comprises two single-phase voltage transformers (PT) and two current transformers (CT). Both PT and CT are electromagnetic and fixed on the pole plate of the oil tank. The oil tank cover is securely joined, allowing the tank to be lifted using two flying rings attached to the cover. The oil tank features a quadrate design and includes key components such as an oil-meter indicator, grounding bolt, and fuel outlet valve on the side. This robust construction ensures reliable performance in outdoor applications.

Technical Data for JLSZW-10 Combined Transformer

1. The metering tank complies with the provisions of GB20840.4-2015 for combined transformers.
2. Current transformers conform to GB20840.2-2014 and GB20840.1-2010 standards.
3. Voltage transformers meet the requirements of GB20840.3-2013 and GB20840.1-2010 standards.
4. A zinc oxide arrester must be installed within one meter of the product’s installation site for effective lightning protection.

Outline and Dimensions of Installation

Overall Dimensions: JLS-6kV, 10kV (0.2 Class, 0.2S Class)， Suitable for use in 6KV and 10KV voltage systems.

Remark: Ensure the unblocked respirator in the middle of the cushion rubber on the moisture-proof device is removed before energizing the product. This step is essential for proper operation.

When Ordering, Please Specify the Following:

• Voltage and Current Ratios: Provide the required voltage and current ratios for the CT and PT of the JLS-6 or JLS-10 model to ensure compatibility with your power network.
• Accuracy Class and Secondary Output: Specify the desired accuracy class (e.g., 0.2, 0.2S) and secondary output parameters to match your measurement requirements.
• Insulation Class and Service Conditions: Include details about insulation levels and operational conditions such as temperature, altitude, and environmental pollution for the JLS-6, JLS-10 outdoor oil-immersed combined transformer.
• Customization Needs: For unique requirements such as advanced accuracy, specific current ratios, or bespoke transformer dimensions, our technical team is ready to deliver tailored solutions for the JLS-6 or JLS-10 combined transformer.
• Appearance Customization: The metering box for the JLS-6 and JLS-10 outdoor oil-immersed combined transformer can be customized to meet specific aesthetic and functional needs, ensuring it integrates seamlessly with your system.

FAQs for JLS-10 Oil-Immersed Combined Transformer

1. What applications are ideal for the JLS-10 transformer?
   The JLS-10 is designed for 6kV and 10kV AC systems, making it suitable for rural grids, industrial substations, and power network upgrades.
2. How does the moisture-proof device enhance the transformer’s durability?
   The integrated device prevents humidity ingress, protecting internal components and extending the transformer’s service life in harsh environments.
3. Can the JLS-10 transformer be customized for specific needs?
   Yes, customization options include voltage/current ratios, accuracy classes, and specific metering box designs to match unique operational requirements.
4. What are the maintenance requirements for the JLS-10 transformer?
   Regular oil level checks, seal inspections, and cleaning of external components ensure optimal performance and longevity.
5. What safety standards does the JLS-10 transformer meet?
   It complies with GB20840.4-2015, GB20840.2-2014, and GB20840.3-2013 standards and supports zinc oxide arrester integration for lightning protection.
6. Why choose the JLS-10 over traditional dry-type transformers?
   The oil-immersed design provides enhanced cooling and insulation, ensuring better performance under heavy loads and in demanding environments.

• Common Fault Handling for Current and Voltage Transformers
• A Discussion on the Saturation Point of Current Transformers: Transformer Protection and Current Protection
• 3 Voltage Transformer Faults and Solutions: Ensuring Accurate Measurement and Protection
• Causes of 35KV Current Transformer Damage
• Number of Permissible Grounding Points in the Secondary Circuit of Voltage Transformers
• Introduction to Combined Transformers and Their Classification