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.
A | 65 | 48 | 68 | 88 | 105 | 70 |
B | 15 | 14 | 18 | 18 | 15 | 15 |
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.
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.
Feature | Specification | Benefit |
---|---|---|
Rated Voltage | 12KV | Compatible with medium voltage switchgear |
Material | Epoxy Resin | High dielectric strength and durability |
Dimensions | 125×125 mm | Standard wall installation |
Current Capacity | Nominal operational current | Reliable medium/High Voltage performance |
Insulation Level | 42/75KV | Safe dielectric performance |
Mechanical Strength | IEC 62271 compliant | Shock and vibration resistance |
Operating Temperature | -40°C to +120°C | Suitable for extreme conditions |
Mounting Type | Through-wall installation | Easy integration into switchgear panels |
Weight | 6.2 kg | Lightweight and easy to handle |
Environmental Compliance | RoHS certified | Eco-friendly and sustainable |
The TG2-12-125X125 Wall Bushing is manufactured and tested according to international standards to ensure reliability and safety:
Ensures the epoxy resin insulation withstands rated and over-voltage conditions.
Standard: IEC 62271-1.
Parameters: AC voltage test 42/75KV, partial discharge ≤5pC.
Tests resistance to vibration, impact, and thermal stress.
Standard: IEC 62271-200.
Procedure: Simulated operational loads and mechanical shocks.
Evaluates bushing performance under continuous current.
Temperature rise should not exceed rated limits.
Standard: IEC 62271-100.
Conducted with a megohmmeter before system energization.
Standard: IEC 62271.
Acceptance criteria: ≥100 MΩ at 20°C.
Performance testing ensures the long-term operational reliability of the bushing:
Test Type | Method | Criteria |
---|---|---|
Dielectric Test | AC withstand voltage | 42/75KV, no breakdown |
Partial Discharge Test | Measurement under rated voltage | ≤5pC |
Thermal Test | Continuous current operation | Temperature ≤120°C |
Mechanical Shock Test | IEC vibration simulation | No cracks or deformation |
Short-Circuit Withstand | Temporary fault simulation | 20kA for 1s |
Terminal Tightening | Torque measurement | 120~150 N·m |
Insulation Resistance | Megohmmeter | ≥100 MΩ |
Environmental Stress | Humidity & temperature cycles | No leakage or cracks |
Energy Loss | Measurement under load | ≤0.5% |
Operational Life | Accelerated aging | ≥20 years |
Even high-quality bushings may encounter operational challenges. The following guide helps resolve common issues:
Problem | Possible Cause | Solution |
---|---|---|
Overheating | Excessive current or blocked ventilation | Reduce load, improve airflow |
Partial Discharge | Contaminated surface or degraded insulation | Clean surface, replace bushing if necessary |
Sparking or Arcing | Loose terminal connections | Tighten terminals and inspect contacts |
Mechanical Damage | Accidental impact during installation | Replace damaged bushing |
Corrosion | Moisture ingress | Apply protective coatings, maintain dry environment |
Noise | Loose connection or vibration | Secure terminals, check mounting |
Conduct regular visual inspections and insulation resistance tests.
Maintain proper system load and airflow.
Keep installation areas dust-free and dry.
Proper installation maximizes performance and safety:
Inspect bushing for cracks, defects, or contamination.
Ensure switchgear system is de-energized.
Gather tools and PPE: insulated gloves, torque wrench, screwdrivers, goggles.
Positioning: Align bushing with wall opening.
Mounting: Secure with bolts as per manufacturer specifications.
Connection: Attach conductors to terminals with recommended torque.
Insulation Test: Verify with a megohmmeter before energizing.
System Energization: Monitor for heat, noise, and vibration.
Avoid overtightening bolts to prevent epoxy damage.
Maintain proper ventilation for heat dissipation.
Ensure system load does not exceed nominal current rating.
Routine maintenance enhances safety and lifespan:
Use a soft brush or compressed air to remove dust.
Avoid water, solvents, or abrasive materials.
Perform maintenance with system de-energized.
Task | Frequency | Notes |
---|---|---|
Visual Inspection | Monthly | Look for cracks, discoloration |
Terminal Torque Check | Quarterly | Secure electrical connections |
Insulation Resistance Test | Semi-Annually | Maintain dielectric integrity |
Thermal Performance Check | Annually | Ensure temperature rise within limits |
Full System Check | Annually | Comprehensive mechanical and electrical inspection |
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.
Reliable Medium/High Voltage Performance – Stable under nominal operational currents.
Superior Insulation – Epoxy resin provides excellent dielectric strength.
Compact Design – 125×125 mm standard wall installation.
Mechanical Durability – Resists vibration, impact, and thermal stress.
Thermal Efficiency – Optimized for heat dissipation.
Maintenance-Friendly – Easy inspection and cleaning.
Environmentally Compliant – RoHS certified and sustainable materials.
Versatile Applications – Suitable for industrial, utility, and commercial Power Systems.
Used in high-voltage switchgear panels for safe conductor routing.
Ensures insulated passage of 12KV conductors through reinforced walls.
Applied in wind and solar farms for medium voltage interconnections.
Facilitates secure electrical distribution in large buildings and data centers.
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.
Phone: +8613736779975
E-mail: sales@vcbbreaker.com
Address: 66 Punan Road, Yueqing Economic Development Zone, Zhejiang, China
Copyright © 2025 Yangmei Electric Group All rights reserved
This website uses cookies to ensure you get the best experience on our website.