Overview of JLSW3-10 Outdoor Oil-Immersed Combined Transformer

The JLSW3-10 model outdoor oil-immersed combined transformer, also known as a metering tank, is a state-of-the-art outdoor energy measurement device. It integrates three single-phase wholly insulated voltage transformers and three current transformers connected in a Y/Y wiring configuration, individually linked to A, B, and C phases.

This transformer represents an upgrade over traditional designs, featuring a moisture-proof device on the oil tank cover to effectively prevent external humidity from penetrating the oil, thereby extending its service life. It offers advantages such as larger capacity, reduced weight, and a compact structure, simplifying installation.

The JLSW3-10 transformer is suitable for 10kV or lower AC 50-60Hz outdoor circuits and can be used for voltage, current, and energy metering, as well as relay protection. It is ideal for rural and urban outdoor substations, industrial enterprises, and primary transformer applications, meeting diverse operational needs with enhanced performance.

Adding active and reactive energy meters further enhances its functionality, making it a versatile high-voltage power metering tank.

Type Designation for JLSW3-10 Combined Transformer

The Type Designation for JLSW3-10 Combined Transformer metering tank outlines the product’s core features and configurations:

• J: Volt transformer
• L: Current transformer
• S: Three-phase
• W: Outdoor device
• 3: Three-phase, four-wire configuration
• 10: Rated voltage class (10kV)

This designation simplifies the identification of the product’s structural and functional attributes

Construction of JLSW3-10 Oil-Immersed metering tank

The JLSW3-10 Outdoor Oil-Immersed Combined Transformer is designed for precise power measurement and stability in outdoor environments. It features three single-phase voltage transformers (PT) and three current transformers (CT), all electromagnetic type, ensuring reliable performance in high-voltage systems. These components are securely mounted on the oil-tank baseplate and integrated with the oil-tank cover, enhancing structural integrity.

The oil tank is designed with a quadrate appearance for durability and ease of maintenance. Key features include lifting rings on the tank cover for convenient transportation, an oil meter for accurate monitoring, a grounding bolt for safety, and a fuel outlet valve for easy drainage. These attributes make the JLSW3-10 Combined Transformer ideal for outdoor power distribution systems, ensuring durability, reliability, and operational efficiency in harsh conditions.

Technical Data of JLSW3-10 metering tank

1. The metering tank complies with the provisions of GB20840.4-2015 for combined transformers.
2. The current transformer adheres to GB20840.2-2014 and 20840.1-2010 standards for current transformers.
3. The voltage transformer conforms to GB20840.3-2013 and 20840.1-2010 standards for voltage transformers.
4. For lightning protection, a zinc oxide arrester must be installed within one meter of the installation point.

Outline and Dimensions of Installation

• Product Models: JLS W3-6KV, 10KV (Accuracy Classes: 0.2, 0.2S)
• Important Operation Reminder: Before energizing the transformer, the unblocked respirator located in the middle of the moisture-proof device’s cushion rubber must be removed. Failure to do so could prevent proper operation and electrification.

When Ordering, Please Specify the Following:

1. Voltage and Current Ratios: Provide the specific voltage and current ratios required for the current transformer (CT) and voltage transformer (PT).
2. Accuracy Class and Secondary Output: Indicate the desired accuracy class (e.g., 0.2, 0.2S) and the required secondary output parameters.
3. Insulation Level: Specify the rated insulation level to match the operational requirements.
4. Custom Requirements: For special needs such as custom transformer appearance, unique voltage/current ratios, or enhanced precision, please contact us for tailored solutions.
5. Service Conditions: Provide details about the installation environment, including altitude, temperature range, and other relevant conditions, to ensure compatibility.

These details will help us deliver a JLSW3-10 Outdoor Oil-Immersed Combined Transformer that perfectly fits your technical and operational needs.

FAQs for JLSW3-10 Oil-Immersed Combined Transformer

1. What are the primary applications of the JLSW3-10 Combined Transformer?
   The JLSW3-10 is designed for outdoor high-voltage systems up to 10kV, supporting urban and rural substations, industrial enterprises, and primary transformer applications.
2. How does the moisture-proof device enhance durability?
   The integrated device prevents external humidity from penetrating the oil, protecting internal components and extending the transformer’s operational lifespan.
3. Can the JLSW3-10 transformer be customized?
   Yes, customization options include specific voltage/current ratios, accuracy classes, insulation levels, and transformer dimensions to meet unique requirements.
4. What maintenance does the JLSW3-10 transformer require?
   Periodic checks of oil levels, seals, and the moisture-proof device, along with regular cleaning, ensure consistent performance and longevity.
5. What safety standards does the transformer meet?
   It complies with GB20840.4-2015 and related standards, and supports lightning protection through the integration of zinc oxide arresters.
6. Why choose the JLSW3-10 over other combined transformers?
   Its oil-immersed design offers superior durability, accurate energy metering, and efficient operation in demanding outdoor environments, making it a cost-effective choice for modern power systems.

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