Best Glass Insulator Solutions for 90KV-220KV Substation

For 90KV-220KV substation operation, insulation stability is critical. NOOA ELECTRIC’s U120B and U160BS glass insulators have been successfully installed in numerous such projects, operating smoothly and gaining customer recognition. Now, Let's Learn more details about their specs & applications.

What are the U120B and U160BS Glass Insulators?

The U120B and U160BS are high-performance suspension tempered glass insulators for medium-high voltage substations. Belonging to NOOA’s U-series, they comply with IEC 60383, GB/T 775, and DL/T 626 standards, ensuring compatibility with 90KV-220KV systems. Their mature design has been proven in actual projects with long-term smooth operation in Brazil & Paraguay.

1. Standard Name & Model Type

- Standard Name: Suspension Type Tempered Glass Insulator (for AC/DC Medium and High-Voltage Substations and Transmission Lines)

- Model Names:

1. U120B: "U"=suspension, "120"=120KN rated load, "B"=standard type, suitable for 90KV-110KV substations.

2. U160BS: "U"=suspension, "160"=160KN rated load, "B"=standard, "S"=substation-optimized, ideal for 110KV-220KV scenarios.

- Tensile Strength:

1. U120B (120KN): Stably bears conductor weight, wind load and vibration in 90KV-110KV substations, with 60KN individual tensile test, meeting industry standards.

2. U160BS (160KN): Higher strength for 110KV-220KV substations, 280mm nominal diameter for better load-bearing.

- Voltage Rating: Optimized for 90KV-220KV substations (U120B: 90KV-110KV; U160BS: 110KV-220KV). Both have excellent insulation: U120B has 40KV power frequency wet withstand voltage and 100KV lightning impulse withstand voltage; U160BS has 400mm creepage distance, preventing flashover.

The U120B and U160BS are key models in NOOA Electric’ s U-series (U70B to U210B+), covering 70-500KN loads and 35KV-1000KV systems. Positioned for 90KV-220KV substations: U120B offers cost-effectiveness for medium voltage; U160BS is optimized for high voltage. Anti-pollution models (U120BP, U160BSP) are available for harsh environments.

Applications of U120B & U160BS Glass Insulators

Both are core insulation components for 90KV-220KV AC/DC substations, used for conductor suspension, equipment connection and insulation. Specific applications:

- 90KV-110KV substations: U120B for conductors, busbars and equipment connections (urban/rural/industrial areas);

- 110KV-220KV substations: U160BS for high-voltage busbars and transformer connections (large-scale projects);

- Substation expansion/renovation: Compatible with existing systems for stable operation;

- Harsh environments: Weather-resistant, cylindrical head saves materials, transparent glass enables easy damage detection.

Both models have been installed in multiple projects with smooth operation. They feature "zero-value self-explosion" (0.02-0.04% annual rate) for easy replacement, reducing maintenance costs and labor.

NOOA ELECTRIC stands out with professional strength, strict quality control and proven project experience. Core advantages:

1. Strict Quality Control & Compliance

Adhering to ISO 9001 and international/national standards, each insulator undergoes strict testing. Both models have ≤0.04% self-explosion rate, 1.2x industry strength, and 30+ year service life.

2. Substation-Specific Optimization & Proven Performance

Optimized for 90KV-220KV substations: U160BS’s "S" design improves installation efficiency and stability. Both have been proven reliable in numerous smooth-running projects.

3. Advanced Production & Stable Supply

Our 8000㎡ base has automatic production/testing lines and advanced bonding technology. Monthly output 15,000 pieces (annual 100,000) ensures on-time delivery for large-scale projects.

4. Customized Solutions & Technical Support

We offer customized models (U120BP, U160BSP) and professional guidance (installation, maintenance) to match your power project’s environmental/technical needs.

5. Global Service & Competitive Pricing

One-stop service (pre-sales to after-sales) and global supply chain cut delivery time by 30%. Large-scale production ensures competitive pricing, reducing project costs.

1.What are the advantages of glass insulators over porcelain or composite types?

Glass insulators offer several benefits:

• Self-shattering feature for easy fault detection
• High mechanical strength and durability
• Excellent resistance to UV, corrosion, and aging
• Low maintenance due to self-cleaning surface

They also maintain stable electrical performance over time.

2.Are U120B and U160BS compliant with international standards?

Yes, both types are generally manufactured according to:

• IEC 60383 (electrical performance)
• IEC 60120 (coupling dimensions)
• IEC 60437 (radio interference)

This ensures compatibility in global transmission projects.

3.Can glass insulators be used in polluted environments?

Yes. Special designs such as:

• Anti-fog profile
• Double shed design
• RTV coating

are available to enhance performance in coastal, industrial, or desert environments.