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TG2-12-125X125 12KV Epoxy Resin Switchgear Wall Bushing for Electrical Insulation

    TG2-12-125X125 12KV Epoxy Resin Switchgear Wall Bushing for Electrical Insulation

    The TG2-12-125X125 12KV Epoxy Resin Switchgear Wall Bushing provides reliable electrical insulation for medium and high voltage switchgear systems. Constructed with durable epoxy resin, it ensures safe conductor passage through walls, reduces energy loss, and enhances operational stability, making it ideal for industrial, utility, and commercial high voltage applications.
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wall bushings serve as critical electrical components, facilitating connections between high-voltage cables and equipment such as transformers and circuit breakers. The structure generally consists of an inner cylinder, outer cylinder, insulating sleeve, support ring, and support bucket. Key advantages include superior strength, high resistance to breakdown, protection against pollution flashover, and excellent corrosion resistance.

Drawing

Epoxy Resin Switchgear Wall Bushing


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The TG2-12-125X125 12KV Epoxy Resin Switchgear wall bushing is a high-performance electrical component designed for medium and high voltage switchgear systems. It ensures secure and fully insulated conductor passage through walls, protecting electrical systems from faults and energy loss.


This article provides a comprehensive overview of the product, including testing standards, common issues, performance evaluation, and environmental compliance, enabling engineers, technicians, and procurement professionals to make informed decisions. The content is structured for Google SEO optimization, suitable for industrial websites and B2B platforms.


Product Overview

The TG2-12-125X125 Wall Bushing combines robust epoxy resin insulation with mechanical durability, supporting reliable electrical connectivity in demanding environments:

  • Rated Voltage: 12KV for medium voltage switchgear.

  • Insulation Material: Epoxy resin with excellent dielectric properties.

  • Dimensions: 125×125 mm for standard wall installation.

  • Current Capacity: Nominal operational current suitable for industrial applications.

  • Mechanical Strength: Resistant to vibration, thermal stress, and mechanical impact.

  • Compliance: Meets IEC 62271 and RoHS standards.

FeatureSpecificationBenefit
Rated Voltage12KVCompatible with medium voltage switchgear
MaterialEpoxy ResinHigh dielectric strength and durability
Dimensions125×125 mmStandard wall installation
Current CapacityNominal operational currentReliable medium/High Voltage performance
Insulation Level42/75KVSafe dielectric performance
Mechanical StrengthIEC 62271 compliantShock and vibration resistance
Operating Temperature-40°C to +120°CSuitable for extreme conditions
Mounting TypeThrough-wall installationEasy integration into switchgear panels
Weight6.2 kgLightweight and easy to handle
Environmental ComplianceRoHS certifiedEco-friendly and sustainable

Testing Standards

The TG2-12-125X125 Wall Bushing is manufactured and tested according to international standards to ensure reliability and safety:

1. Dielectric Testing

  • Ensures the epoxy resin insulation withstands rated and over-voltage conditions.

  • Standard: IEC 62271-1.

  • Parameters: AC voltage test 42/75KV, partial discharge ≤5pC.

2. Mechanical Strength Testing

  • Tests resistance to vibration, impact, and thermal stress.

  • Standard: IEC 62271-200.

  • Procedure: Simulated operational loads and mechanical shocks.

3. Thermal Performance Testing

  • Evaluates bushing performance under continuous current.

  • Temperature rise should not exceed rated limits.

  • Standard: IEC 62271-100.

4. Insulation Resistance Testing

  • Conducted with a megohmmeter before system energization.

  • Standard: IEC 62271.

  • Acceptance criteria: ≥100 MΩ at 20°C.


Performance Testing

Performance testing ensures the long-term operational reliability of the bushing:

Test TypeMethodCriteria
Dielectric TestAC withstand voltage42/75KV, no breakdown
Partial Discharge TestMeasurement under rated voltage≤5pC
Thermal TestContinuous current operationTemperature ≤120°C
Mechanical Shock TestIEC vibration simulationNo cracks or deformation
Short-Circuit WithstandTemporary fault simulation20kA for 1s
Terminal TighteningTorque measurement120~150 N·m
Insulation ResistanceMegohmmeter≥100 MΩ
Environmental StressHumidity & temperature cyclesNo leakage or cracks
Energy LossMeasurement under load≤0.5%
Operational LifeAccelerated aging≥20 years

Common Issues and Troubleshooting

Even high-quality bushings may encounter operational challenges. The following guide helps resolve common issues:

ProblemPossible CauseSolution
OverheatingExcessive current or blocked ventilationReduce load, improve airflow
Partial DischargeContaminated surface or degraded insulationClean surface, replace bushing if necessary
Sparking or ArcingLoose terminal connectionsTighten terminals and inspect contacts
Mechanical DamageAccidental impact during installationReplace damaged bushing
CorrosionMoisture ingressApply protective coatings, maintain dry environment
NoiseLoose connection or vibrationSecure terminals, check mounting

Tips for Prevention

  • Conduct regular visual inspections and insulation resistance tests.

  • Maintain proper system load and airflow.

  • Keep installation areas dust-free and dry.

Epoxy Resin Switchgear Wall Bushing



Installation Guidelines

Proper installation maximizes performance and safety:

Pre-Installation

  • Inspect bushing for cracks, defects, or contamination.

  • Ensure switchgear system is de-energized.

  • Gather tools and PPE: insulated gloves, torque wrench, screwdrivers, goggles.

Installation Procedure

  1. Positioning: Align bushing with wall opening.

  2. Mounting: Secure with bolts as per manufacturer specifications.

  3. Connection: Attach conductors to terminals with recommended torque.

  4. Insulation Test: Verify with a megohmmeter before energizing.

  5. System Energization: Monitor for heat, noise, and vibration.

Best Practices

  • Avoid overtightening bolts to prevent epoxy damage.

  • Maintain proper ventilation for heat dissipation.

  • Ensure system load does not exceed nominal current rating.


Maintenance and Cleaning

Routine maintenance enhances safety and lifespan:

Cleaning Procedure

  • Use a soft brush or compressed air to remove dust.

  • Avoid water, solvents, or abrasive materials.

  • Perform maintenance with system de-energized.

Recommended Maintenance Schedule

TaskFrequencyNotes
Visual InspectionMonthlyLook for cracks, discoloration
Terminal Torque CheckQuarterlySecure electrical connections
Insulation Resistance TestSemi-AnnuallyMaintain dielectric integrity
Thermal Performance CheckAnnuallyEnsure temperature rise within limits
Full System CheckAnnuallyComprehensive mechanical and electrical inspection

Environmental Compliance

The TG2-12-125X125 bushing adheres to global environmental standards:

  • RoHS Certification: Free from hazardous substances.

  • Sustainable Materials: Eco-friendly epoxy resin.

  • Low Emissions: Minimal environmental impact during manufacturing.

  • Recyclable Components: Designed for end-of-life recycling.

These standards ensure compliance with international regulations and promote sustainable industrial practices.


Advantages of TG2-12-125X125 Bushing

  1. Reliable Medium/High Voltage Performance – Stable under nominal operational currents.

  2. Superior Insulation – Epoxy resin provides excellent dielectric strength.

  3. Compact Design – 125×125 mm standard wall installation.

  4. Mechanical Durability – Resists vibration, impact, and thermal stress.

  5. Thermal Efficiency – Optimized for heat dissipation.

  6. Maintenance-Friendly – Easy inspection and cleaning.

  7. Environmentally Compliant – RoHS certified and sustainable materials.

  8. Versatile Applications – Suitable for industrial, utility, and commercial Power Systems.


Application Examples

Industrial Power Systems

Used in high-voltage switchgear panels for safe conductor routing.

Utility Substations

Ensures insulated passage of 12KV conductors through reinforced walls.

Renewable Energy Projects

Applied in wind and solar farms for medium voltage interconnections.

Commercial Complexes

Facilitates secure electrical distribution in large buildings and data centers.


User Feedback

  • Industrial Facilities: Report minimal downtime and stable operation under continuous load.

  • Utility Companies: Praise high mechanical strength and reliable insulation.

  • Renewable Energy Projects: Highlight compact design, thermal stability, and long service life.

Sample Testimonial:
"The TG2-12-125X125 Epoxy Resin Switchgear Wall Bushing has proven reliable for our high voltage installations. Its insulation and mechanical durability ensure Safe Operations in all conditions." – Senior Electrical Engineer, Utility Provider



The TG2-12-125X125 12KV Epoxy Resin Switchgear Wall Bushing is a high-quality, durable, and environmentally compliant solution for medium and high voltage electrical systems. With proper installation, maintenance, and adherence to technical standards, it ensures:

  • Safe and reliable conductor passage

  • Superior dielectric performance

  • Mechanical strength and thermal stability

  • Compliance with international safety and environmental standards

  • Long-term operational reliability

This bushing is essential for industrial, utility, and commercial applications, providing safety, efficiency, and sustainability in medium and high voltage power systems.


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