Overview
220kV SF6 Gas-Insulated Gapless Metal Oxide Surge Arrester for AC Systems:
The 220 kV SF6 Gas-Insulated Gapless Metal Oxide Surge Arrester offers exceptional surge protection for AC systems, combining advanced gapless MOV technology and SF6 gas insulation for superior reliability and performance. Perfect for substations and critical power infrastructure. Contact us for pricing and customization.
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Product Feature
The 220 kV SF6 Gas-Insulated Gapless Metal Oxide Surge Arrester is engineered to provide high-performance surge protection for critical high-voltage AC systems. Designed to protect against overvoltages caused by lightning strikes or switching operations, this arrester features a gapless metal oxide varistor (MOV) design, which ensures excellent surge absorption and minimal residual voltage. The gapless construction allows the arrester to handle high-energy transients without the risk of spark gap degradation, providing reliable and consistent protection.
The SF6 gas insulation enhances the dielectric strength of the arrester, enabling it to withstand significant surge currents and high voltages while maintaining a compact and robust form factor. This design ensures long operational life, low maintenance needs, and superior performance in harsh environmental conditions, making it an ideal solution for substations and power transmission systems.
Applications for the 220 kV SF6 Gas-Insulated Surge Arrester include power grids, industrial plants, and renewable energy installations where high-voltage surge protection is crucial. The arrester’s gapless design and SF6 insulation provide reliable, maintenance-free performance, ensuring the safety and stability of electrical infrastructure. Contact us for customized solutions to meet your specific requirements.
Technical Parameters
| No. | Parameter Name | Unit | Parameter (110kV) | Parameter (220kV) |
|---|---|---|---|---|
| 1 | System Nominal Voltage | kV | 110 | 220 |
| 2 | System Maximum Voltage | kV | 126 | 252 |
| 3 | System Rated Voltage | kV | 102 | 204 |
| 4 | Lightning Arrester Continuous Operating Voltage | kV | 79.6 | 159 |
| 5 | Nominal Discharge Current (8/20μs) | kA | 10 | 10 |
| 6 | Residual Voltage under Steep Front Impulse Current (1/100μs) | kV | ≤297 | ≤594 |
| 7 | Residual Voltage under Lightning Impulse Current (8/20μs) | kV | ≤266 | ≤532 |
| 8 | Residual Voltage under Operation Impulse Current (30/60μs) | kV | ≤226 | ≤452 |
| 9 | DC 1mA Reference Voltage (Peak) | kV | ≥102 | ≥296 |
| 10 | Leakage Current at 75% of DC 1mA Reference Voltage | μA | 50 | 50 |
| 11 | Power Frequency Reference Voltage | kV | ≥102 | ≥204 |
| 12 | Partial Discharge Amount | pC | ≤10 | ≤10 |
| 13 | Continuous Current | μA | ≤200 | ≤350 |
| 14 | Long Duration Impulse Withstand Current (Line Discharge Class) | 600 | 800 | |
| Long Duration Impulse Withstand Current (Square Wave Current Impulse) | A | 600 | 800 | |
| 15 | 4/10μs Large Impulse Withstand Current (Two Times) | kA | 100 | 100 |
FAQs
1. What is the specific rated capacity (MVA) and voltage ratio of the transformer?
2. What are the cooling methods supported by the transformer (e.g., ONAN, ONAF)?
3. What type of insulation is used, and how does it affect the expected lifespan of the transformer?
4. Can you provide the core design details, including core material and losses?
5. What is the load loss, no-load loss, and impedance voltage?
6. What protective devices are integrated, such as Buchholz relay, oil level indicators, or temperature monitors?
7. Does this transformer comply with international and national standards (e.g., IEC, ANSI)?
8. What is the expected energy efficiency, and are there eco-friendly options available?
9. What testing and certification has the transformer undergone?
10. What are the environmental and installation requirements?
1. What is the typical lead time from order to delivery for this transformer?
2. What is included in the price (e.g., accessories, transport, installation)?
3. What are the terms and conditions of payment?
4. What customization options are available for the transformer?
5. How are transport and handling managed to prevent oil leaks or damages?
6. Are installation and commissioning services offered, and what do they include?
7. Is there a factory acceptance test (FAT) that can be attended before delivery?
8. What is the warranty period, and what does it cover?
9. How are spare parts supplied, and is there a recommended stock for critical components?
10. Does the transformer require any special tools or training for operation?
1. What maintenance schedule is recommended, and what routine services are required?
2. Is technical support available on-site, and what are the response times for emergency support?
3. What types of failure or fault diagnosis support are available?
4. How does the company handle oil testing and replacement over time?
5. Is there a remote monitoring system available for real-time performance tracking?
6. What are the procedures for disposal or recycling at the end of the transformer's life?
7.Are extended warranties or maintenance contracts available?
8. What documentation and training are provided to the operational team?
9. What is the process for upgrading or retrofitting the transformer in the future?
10.How does the supplier support in meeting any regulatory or environmental compliance post-installation?
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QC & Guarantee
Market Orientation and Service Commitment
In response to fierce market competition and to meet customer demands, our company adheres to a market-oriented approach and a customer-centric philosophy. We have earned widespread recognition from our clients through efficient, comprehensive services and superior product quality.
Our Commitments
- Product Lifespan Guarantee: The operational lifespan of our transformers is no less than 30 years.
- Strict Quality Control:
- Upon receiving bid documents, we promptly initiate the evaluation process to ensure all customer requirements are fully addressed.
- We carefully select certified suppliers and strictly follow quality management standards to control and inspect raw materials and components.
- We produce high-quality, customer-satisfactory parts in full compliance with contract and technical agreement requirements.
- After-Sales Service Commitment:
- All performance indicators and technical specifications of our transformers meet or exceed national standards.
- Within 3 years of installation and commissioning, if any oil leakage occurs due to manufacturing defects in oil-immersed transformers, we will repair it at no cost.
- For any critical component defects identified during production or issues discovered during installation, we prioritize resolution to meet project timelines, followed by thorough responsibility analysis and necessary repairs or replacements.
- We welcome customers to supervise the manufacturing process at our facility and will provide full support.
After-Sales Support
We offer comprehensive after-sales services, including free guidance for installation and commissioning. After the product is operational, if the customer requires support, our service team will respond promptly:
- Arrival on-site within 24 hours for locations within 300 km.
- Arrival on-site within 48 hours for locations beyond 300 km.
Additionally, we have established a robust regular follow-up system. We conduct periodic written or on-site visits to monitor the performance of in-service products, ensuring our customers have continuous peace of mind.
Ultimate Guide
Faster global delivery
lifespan ＞ 30 years
Why Choose us ？
engineered to perform.
Taishan Transformer is a key national-level manufacturer specializing in transformers, recognized as a “Contract-Honoring and Promise-Keeping” enterprise, a high-tech enterprise, and a national-level enterprise technology center. It is recommended in the national directory for rural and urban power grid construction and renovation, as well as a recommended supplier of major electromechanical equipment for hydropower projects. Its products have been awarded the title of “National Quality Inspection Qualified Product – Quality Trustworthy Product” and “Nationally Recognized Product for Mechanical Industry Users.
Our Project
Our products not only dominate the domestic market but are also exported to more than 30 countries and regions, including Russia, Southeast Asia, Africa, and the Americas, serving industries such as power, municipal engineering, metallurgy, and petrochemicals.
