Product Overview

The JLSZV(F)-6W and JLSZV(F)-10W are three-phase outdoor silicon rubber combined instrument transformers designed for medium voltage metering applications in challenging environments. These silicon rubber instrument transformers integrate current transformer (CT) and voltage transformer (PT) functions within a single housing, providing reliable performance in coastal areas, heavy industrial zones, and regions with high pollution levels.

Engineered with silicon rubber insulation technology, this combined transformer offers superior resistance to UV radiation, chemical exposure, and surface contamination. The hydrophobic properties of silicon rubber enable self-cleaning action under rainfall, maintaining insulation integrity even in heavily polluted atmospheres. Suitable for 50Hz or 60Hz three-phase AC systems with rated voltages of 6kV or 10kV, these outdoor combined transformers operate reliably at altitudes up to 4500m.

Product Display

JLSZV(F)-6/10W Product Display

JLSZV(F)-6/10W Product Display - Built for Harsh Environments

JLSZV(F)-6/10W Product Display - Technical Overview

Application Position

JLSZV(F)-6W and JLSZV(F)-10W silicon rubber combined transformers are deployed in the metering section of 6kV and 10kV medium voltage power distribution networks, particularly in environments where pollution resistance is critical. Installed on the high-voltage side of distribution transformers or within outdoor metering cabinets, these instrument transformers provide accurate voltage and current signals for revenue metering and system monitoring applications.

The silicon rubber insulation makes these transformers especially suitable for coastal power distribution systems exposed to salt spray, industrial areas with chemical pollutants, and tropical regions with high humidity and UV exposure. The self-cleaning surface characteristics reduce maintenance requirements and ensure long-term insulation performance.

Main Applications

Coastal power distribution networks and maritime facilities
Heavy industrial areas and chemical/petrochemical plants
Tropical and subtropical regions with high UV radiation
6kV/10kV outdoor medium-voltage distribution systems
High-altitude substations up to 4500m elevation
Industrial power monitoring and low-maintenance metering solutions
Mining operations in remote locations

Application Case Studies

Application Scenario 1: Coastal Power Distribution
Coastal power distribution networks face continuous salt spray exposure from ocean environments. Traditional epoxy resin transformers experience rapid surface degradation and flashover incidents in these conditions. Silicon rubber insulation’s hydrophobic properties prevent salt accumulation, maintaining insulation resistance during storms and high-wind events. The self-cleaning surface reduces maintenance frequency and extends service life in marine environments.

Application Scenario 2: Chemical Processing Facilities
Petrochemical and chemical processing plants contain corrosive chemical vapors and airborne particulates that degrade conventional insulation materials. Silicon rubber transformers demonstrate excellent chemical resistance, with rainfall effectively washing away chemical deposits from the surface. The integrated CT and PT design simplifies installation in space-constrained metering cabinets while maintaining billing accuracy for high-consumption industrial operations.

Application Fit

Suitable For

Coastal and marine environments with salt spray exposure
Heavy industrial areas and chemical/petrochemical plants
Tropical regions with high UV radiation and sandstorms
6kV/10kV medium voltage outdoor metering applications
High-altitude installations up to 4500m without derating
Applications requiring low-maintenance and self-cleaning insulation
Mining operations in remote or harsh environments

Not Recommended For

Indoor installations where silicon rubber properties are unnecessary
Applications requiring separate CT and VT installation
Protection-only applications where metering accuracy is not required
Systems above 12kV class without technical confirmation
Environments with extreme mechanical stress or impact risk
Applications requiring oil-immersed transformer design
Projects where installation space cannot accommodate 92kg weight
Low-pollution indoor environments where cost optimization is priority

Installation Conditions

Installation position: Outdoor pole-mounted, platform-mounted, or within metering cabinets
Ambient temperature: -15°C to +55°C
Maximum altitude: ≤ 4500m (no derating required)
Pollution level: Suitable for pollution level III and IV areas with heavy contamination
Grounding: Connect grounding terminal per local electrical codes
Maintenance: Minimal maintenance required due to self-cleaning hydrophobic surface

Model Variants

The JLSZV(F) series is available in two voltage ratings:

JLSZV(F)-6W: Designed for 6kV medium voltage systems with insulation level 7.2/32/60kV. Suitable for industrial distribution networks, mining operations, and smaller utility systems operating at 6kV nominal voltage.
JLSZV(F)-10W: Designed for 10kV medium voltage systems with insulation level 12/42/75kV. Suitable for utility distribution networks, large industrial facilities, and coastal power systems operating at 10kV nominal voltage.

Both models feature silicon rubber insulation technology and are available with multiple accuracy class options for CT and PT outputs. The (F) designation indicates the silicon rubber insulation variant.

Technical Parameters

The JLSZV(F)-6/10W is an outdoor silicon rubber combined instrument transformer for 6kV and 10kV metering in polluted and coastal environments. Operating temperature -15°C to +55°C, altitude up to 4500m, compliant with GB20840.3-2013.

Voltage Transformer Data

Model	Ratio (V)	Insulation Level (kV)	Accuracy Classes & Burden	Limit Output
JLSZV(F)-6W	6000/100	7.2/32/60	0.2 (2×20VA), 0.5 (2×50VA), 1.0 (2×80VA), 3.0 (2×200VA)	2×400 VA
JLSZV(F)-10W	10000/100	12/42/75	0.2 (2×20VA), 0.5 (2×50VA), 1.0 (2×80VA), 3.0 (2×200VA)	2×400 VA

Current Transformer Data

Parameter	Range / Value
Primary Current (Ip)	7.5A – 600A (selectable ratios)
Secondary Current	5A (standard)
Short-Time Thermal Current (1s)	Varies by primary current rating
Dynamic Withstand Current	Varies by primary current rating

Installation & Dimensions

Dimension Reference

Item	Reference Value
Overall width	895mm
Overall height	582mm
Base dimensions	618mm x 408mm
Mounting hole spacing	Per installation drawing
Terminal spacing	Per installation drawing
Primary terminal type	Bolted connection
Secondary terminal box	Sealed enclosure with IP54 protection
Approximate weight	92kg

JLSZV(F)-6/10W Installation Diagram

Wiring Diagram

JLSZV(F)-6/10W Wiring Diagram

Installation Guidelines

Mount the silicon rubber combined transformer on a stable platform or pole using the provided mounting brackets. Ensure adequate clearance from grounded surfaces per medium voltage installation standards. Connect primary conductors to the designated terminals (AP1, AP2 for phase A; CP1, CP2 for phase C). Connect secondary wiring to the terminal box, separating metering and protection circuits as required. Ground the transformer frame and secondary circuits per local electrical codes. The silicon rubber insulation requires no special handling precautions during installation.

Standards Compliance

This silicon rubber combined transformer complies with:

GB20840.3-2013: Instrument transformers – Part 3: Additional requirements for protective voltage transformers
IEC 61869 series (by reference)

Designed and tested for outdoor use in pollution level III and IV environments. Silicon rubber insulation meets UV resistance and tracking resistance requirements for long-term outdoor exposure.

Selection Guide

When selecting a JLSZV(F) silicon rubber combined transformer:

Choose JLSZV(F)-6W for 6kV systems or JLSZV(F)-10W for 10kV systems.
Confirm the installation environment requires silicon rubber insulation (coastal, industrial, high-pollution areas).
Specify primary current (e.g., 100A, 200A, 400A) based on expected load current.
Select CT accuracy class: 0.2S for revenue metering, 0.5S for monitoring, 0.5 for general indication.
Select PT accuracy class: 0.2 for revenue metering, 0.5 for monitoring, 1.0 or 3.0 for indication.
Confirm altitude does not exceed 4500m.
Verify installation space can accommodate 895mm x 582mm dimensions and 92kg weight.

Ordering Information

Provide the following when ordering:

Full model number (JLSZV(F)-6W or JLSZV(F)-10W)
System voltage (6kV or 10kV)
CT primary current rating (e.g., 100A, 200A, 400A)
CT accuracy class (0.2S, 0.5S, or 0.5)
PT accuracy class (0.2, 0.5, 1.0, or 3.0)
Rated burden for each accuracy class
Installation environment description (coastal, industrial, etc.)
Altitude above sea level
Quantity required
Any special requirements (terminal arrangement, painting, etc.)

FAQs

Silicon rubber insulation offers superior pollution resistance, UV stability, and self-cleaning properties. The hydrophobic surface prevents water film formation, reducing flashover risk in wet conditions. Silicon rubber also resists chemical attack from salt spray and industrial pollutants, making it ideal for coastal and heavy industrial environments.

Yes, JLSZV(F)-6W and JLSZV(F)-10W are specifically designed for coastal environments. The silicon rubber insulation resists salt spray corrosion and the hydrophobic properties prevent salt accumulation on the surface. Rainfall naturally cleans the surface, maintaining insulation integrity without manual maintenance.

JLSZV(F) uses silicon rubber insulation, while JLSZV2 uses epoxy resin insulation. Silicon rubber provides better pollution resistance, UV stability, and self-cleaning properties. JLSZV(F) is heavier (92kg vs 71kg) and larger (895mm x 582mm vs 635mm x 500mm). JLSZV(F) complies with GB20840.3-2013, while JLSZV2 complies with GB20840.4-2015.

Silicon rubber transformers require minimal maintenance due to self-cleaning properties. Rainfall naturally washes away pollutants from the hydrophobic surface. Periodic visual inspection is recommended to check for mechanical damage or excessive contamination. In extremely polluted areas, occasional washing with clean water may be necessary, but frequency is much lower than for conventional insulation materials.

Yes, JLSZV(F)-6W and JLSZV(F)-10W are rated for operation at altitudes up to 4500m without performance derating. The silicon rubber insulation maintains dielectric strength at high altitudes, and the design accounts for reduced air density in thermal calculations.

For revenue metering applications, CT accuracy class 0.2S and PT accuracy class 0.2 are recommended. These provide the highest accuracy for billing purposes. For monitoring applications, CT class 0.5S and PT class 0.5 are suitable. For general indication purposes, CT class 0.5 and PT class 1.0 or 3.0 can be specified.

Yes, the silicon rubber compound used in JLSZV(F) transformers is specifically formulated with UV stabilizers to resist degradation from solar radiation. This ensures long-term performance in tropical and subtropical regions with high UV exposure, preventing cracking, hardening, or loss of hydrophobic properties over the transformer’s service life.

JLSZV(F)-6W and JLSZV(F)-10W comply with GB20840.3-2013, which covers additional requirements for protective voltage transformers. The design also references IEC 61869 series standards. The silicon rubber insulation meets requirements for pollution resistance, UV stability, and tracking resistance for outdoor medium voltage applications.

JLSZV(F)-6 / JLSZV(F)-10W Silicon Rubber Combined Transformer