Dehler
Dehler
Explore our highly customized and type-tested industrial power grid components, manufactured to ensure uncompromising quality standards under international criteria.
As global electrical transmission networks expand to balance localized renewable production and high-density load centers, grid protection assets must operate at higher reliability indices than ever before.
Engineered with exceptional non-linear voltage-current properties. This guarantees instant transition to low-resistance states during overvoltage, protecting critical substation transformers from impulse damage.
Silicone rubber housing directly molded onto structural FRP cores eliminates internal moisture infiltration, avoiding local partial discharges and subsequent tracking erosion.
Precisely customized to maintain a low residual voltage under steep, lightning, and switching impulse currents, improving the safety margin of adjacent insulation equipment.
Our engineering division remains committed to pushing the boundaries of surge protection limits. The current development pipeline centers on transition methodologies from passive overvoltage clipping to intelligent, digitalized diagnostic ecosystems. By embedding multi-parameter optical fiber sensor networks directly within the arrester's silicone housing, we actively capture localized leakage current shifts and thermal fluctuations in real time.
Looking forward to 2026 and beyond, we are shifting towards eco-friendly high-voltage insulation materials. This involves scaling alternative, high-density thermoplastic elastomers which offer similar hydrophobicity to silicone rubber, but are fully recyclable at end-of-life. Through partnerships with universities and national transmission testing institutes, we are redefining the lifespans of custom-designed 220 kV arresters to match the 40-year requirements of smart grid systems.
The transition towards high-voltage DC (HVDC) schemes and ultra-high-voltage AC (UHVAC) interconnects has positioned 220 kV systems as essential regional collection points. In emerging industrialized regions across Latin America, South Asia, and Africa, standardizing 220 kV infrastructure is the primary defense against volatile weather patterns.
Heavy industries, including massive petrochemical processing zones, offshore wind collection platforms, and large-scale mining operations, require customized overvoltage protection structures. Standard catalog arresters often struggle under these complex conditions, causing unexpected downtime and lost revenue. As experienced exporters, we analyze structural dynamics, altitude factors, and pollution indices to deliver custom-manufactured surge protection solutions.
High-voltage installations operate under diverse environmental challenges. A generic arrester design is insufficient to handle extreme environments.
Installations above 1000m face decreased atmospheric density. We custom-engineer the external creepage distance and structural profile to prevent flashovers, ensuring performance up to 4000m altitudes.
By reinforcing internal FRP core structures and using high-strength aluminum alloy base castings, our arresters are dynamic-simulation tested to withstand Richter-scale 8+ seismic shocks.
Offshore wind grids and coastal installations expose porcelain and polymer to salt-mist and high humidity. We supply customized HTV silicone rubber housing to maintain hydrophobicity class HC1-HC2.
Based in Wenzhou/Yueqing, the hub of electrical manufacturing, our supply chain is highly consolidated. By establishing long-term, direct strategic partnerships with raw material suppliers (high-purity zinc oxide powders, fiberglass epoxy core rods, and high-temperature vulcanized silicone formulations), we maintain reliable manufacturing schedules despite shifting material markets.
This localized cluster structure minimizes logistical bottlenecks, allowing us to complete custom orders within 4–6 weeks—much faster than the industry standard. Additionally, our specialized automated testing bays run continuous quality checks on every component, maintaining reliability without delaying production.
We provide engineering support that extends beyond the factory floor. Our technical support team works closely with local engineering procurement and construction (EPC) companies worldwide to assist with pre-commissioning phase insulation coordination, cantilever mechanical load calculation, and structural adaptation.
Our documentation packages include all necessary records, from chemical trace certificates of the zinc oxide batches to high-power type-test reports certified by international laboratories like KEMA, CEPRI, and ASTA. This comprehensive documentation supports smooth project execution and regulatory compliance for power authorities in Europe, the Americas, and the Asia-Pacific region.
Dehler Technology Co., Ltd., established in 2016, is located at No. 271, Weishiqi Road, Yanpan Economic Development Zone, Yueqing City. Additionally, our complete electrical equipment and transformer division operates from No. 178, Jingba Road, Economic Development Zone. We are a specialized high-technology enterprise integrating research & development, precision production, sales, and comprehensive after-sales services within the power systems industry.
Our extensive production lines cover high & low voltage switchgear, prefabricated substations, cable distribution cabinets, indoor & outdoor vacuum circuit breakers, load break switches, isolation switches, grounding systems, and customized surge arresters. We serve critical infrastructural networks, including railway electrification, chemical processing, coal mining, communications systems, and wind power generation fields.
Our company operates under standard quality management systems. We leverage a structured, audited quality policy as the foundation of our high-voltage and low-voltage manufacturing. By strictly adhering to national and international standards (including ISO 9001:2015, OHSAS 18001, and ISO 14001), we ensure that every 220 kV arrester leaves our facility with verified test reports.
This systemic approach forms our market reputation and enables long-term relationships with global distributors. By upgrading our physical testing laboratories with impulse generator rigs, leakage monitoring instrumentation, and dynamic seal testing chambers, we consistently deliver high-voltage products that perform reliably under field conditions.
Our operating philosophy is built on "high-quality products, superior technology, and impeccable service." In a changing global industry environment, we adapt by upgrading our management capabilities, extending our regional sales and distribution channels, and optimizing our logistics network.
We focus on developing customized high-voltage products. Rather than supplying generic solutions, we analyze the specific electrical profiles and environmental conditions of each client's system. This ensures our 220 kV Lightning Arresters operate with optimal safety margins, protecting substation assets and minimizing grid disturbances.
Below are technical answers to common queries regarding the design, selection, and maintenance of 220 kV Metal-Oxide Surge Arresters (MOSA).
Explore our auxiliary products designed to complement high-voltage transformer substations, industrial power factor regulation systems, and medium-to-low voltage switchgear boards.
We maintain collaborative relationships with major manufacturing suppliers, power grids, and local distribution companies to ensure product quality and reliable supply chains.
Our engineering team assists with insulation coordination planning, mechanical load calculation, and custom dimensions. Contact our Yueqing facility to request a technical review and detailed quotation for your 220 kV project.
Dehler Technology Co., Ltd.
Factory Address: No. 271, Weishiqi Road, Yanpan Economic Development Zone, Yueqing City, Zhejiang, China
Transformer Division: No. 178, Jingba Road, Economic Development Zone, Yueqing City, Zhejiang, China