Dehler
Dehler
In the modern electrical grid, overvoltage protection is not just a safety requirement; it is the backbone of operational continuity. Zinc Oxide (ZnO) Lightning Arresters have revolutionized the industry by replacing traditional silicon carbide arresters. Unlike their predecessors, ZnO arresters operate without spark gaps, utilizing the highly non-linear voltage-current characteristics of metal oxide varistors (MOV).
Our solutions cater to ultra-high voltage (UHV) transmission, renewable energy integration (wind and solar), and smart city distribution networks. By offering superior energy absorption capabilities and exceptionally fast response times (nanoseconds), our arresters safeguard expensive equipment like power transformers and switchgear from atmospheric lightning strikes and internal switching surges.
Tailored arresters for wind turbine nacelles and solar PV combiner boxes, designed to withstand the harmonic distortions and frequent transient surges of inverter-based resources.
High-duty ZnO arresters for rolling stock and traction substations, ensuring 24/7 reliability for high-speed rail networks globally.
Explosion-proof and heavy-pollution resistant designs for steel mills, coal mines, and chemical plants where environmental conditions are extreme.
Established in 2016 and headquartered in the electrical hub of Yueqing City, Dehler Technology Co., Ltd. has rapidly ascended as a premier manufacturer in the high and low voltage power equipment industry. Our facility at No. 271 Weishiqi Road and our dedicated Transformer Division at No. 178 Jingba Road represent over 20,000 square meters of manufacturing excellence.
As a technology-integrated enterprise, we manage the entire lifecycle from R&D and production to global sales and service. Our portfolio spans high-voltage switchgear, prefabricated substations, and critical protection components like the ZnO Lightning Arrester. Our philosophy—"survival through quality, development through technology"—is backed by rigorous ISO certifications and national quality standards.
The next generation of ZnO arresters will feature integrated leakage current sensors and discharge counters with LoRaWAN or NB-IoT connectivity for real-time health monitoring.
Transitioning from traditional porcelain to high-hydrophobicity silicone rubber housings to reduce weight, prevent shatter-related damage, and improve performance in coastal areas.
Reducing the carbon footprint of MOV production through advanced sintering techniques and recyclable housing materials, aligning with global Green Energy initiatives.
Dehler is committed to "Information Gain" in the industry, providing not just products but comprehensive whitepapers and technical support that help engineers optimize their protection coordination studies.
In densely populated metropolitan areas, our compact gas-insulated switchgear (GIS) integrated ZnO arresters provide space-saving protection without compromising on safety distances.
Corrosion is the primary enemy at sea. Our arresters for shipbuilding and offshore wind platforms feature salt-spray resistant hardware and specialized coatings to ensure a 30-year service life in saline environments.
We provide drop-in replacements for legacy systems in steel mills and petroleum refineries, ensuring that older infrastructure can benefit from modern surge protection technology without extensive redesign.
Zinc Oxide arresters have a much higher non-linear coefficient. This eliminates the need for a series gap, allowing the arrester to respond faster to transients and provide lower residual voltage, which better protects transformer insulation.
The Duty Cycle Voltage and Maximum Continuous Operating Voltage (MCOV) must be selected based on the system's earthing method (solidly earthed vs ungrounded) and the expected temporary overvoltages (TOV).
Yes, all our ZnO arresters are manufactured and tested in accordance with IEC 60099-4, IEEE C62.11, and GB11032 standards, ensuring global interoperability and safety compliance.
Regular monitoring of leakage current (resistive component) is recommended. Significant increases in resistive leakage current can indicate varistor aging or moisture ingress, signaling the need for replacement.
Collaborating with industry leaders to power the future.
Whether you are designing a new substation or upgrading an existing industrial plant, our engineering team is ready to provide the professional ZnO arrester specifications and CAD drawings you need.
