Dehler
Dehler
Explore our industry-verified medium and low voltage solutions built for global power system resilience.
Decoding engineering requirements and compliance criteria for heavy industry, national grids, and renewable generation assets.
Modern electrical grids demand surge arresters capable of enduring temporary overvoltage events caused by switching or grid faults without thermal runaway. Metal Oxide Varistor (MOV) configurations must be specified with precise volt-ampere characteristics to preserve electrical stability.
Polymer-housed (silicone rubber) arresters have increasingly replaced classic porcelain versions due to their superior hydrophobic properties, resistance to mechanical vandalism, lightweight installation profile, and non-shattering explosion-proof characteristics.
For installations in industrial coastlines or heavy dust zones, procurement engineers require extended creepage distances (e.g., 31mm/kV or higher) to avoid tracking and flashover. Smart selection involves determining the unified specific creepage distance (USCD).
A professional guide to selecting high-voltage surge arresters based on system classification, nominal discharge current, and environmental requirements.
| Arrester Class (IEC 60099-4) | Nominal Discharge Current (8/20 µs) | Typical Application Environment | Key Performance Indicators (KPIs) |
|---|---|---|---|
| Station Class (Class 3-5) | 10 kA to 20 kA | EHV/UHV Substations, Large Power Plants, Transformer Inlets | High energy absorption capacity, low residual voltage, exceptional mechanical strength. |
| Intermediate Class (Class 2) | 10 kA | Sub-transmission Substations, Medium Industrial Sub-stations | Excellent cost-to-protection ratio, reliable switching surge protection. |
| Distribution Class (Class 1) | 5 kA to 10 kA | Overhead Distribution Lines, Pole-mounted Transformers | High moisture sealing efficiency, lightweight polymeric design, lightning protection focus. |
| Line Surge Arresters (LSA) | 10 kA to 20 kA | High-Lightning Transmission Towers (with/without gaps) | Mitigates shielding failures, reduces double-circuit outages, optimizes grid insulation. |
Our research and development program indicates a strong industry push towards integrated IoT leakage current sensors. By incorporating online monitoring systems, utility engineers can track real-time resistive leakage currents to proactively isolate degraded zinc oxide blocks before catastrophic failures arise.
Established in 2016, Dehler Technology Co., Ltd. is currently located at No. 271, Weishiqi Road, Yanpan Economic Development Zone, Yueqing City. Additionally, our specialized electrical complete equipment transformer division is located at No. 178, Jingba Road, Economic Development Zone. We are a high-technology enterprise integrating research and development, manufacturing, sales, and service, specializing in the high and low voltage power equipment industry.
Our production specializes in complete high & low voltage switchgear, Prefabricated substations, cable branch cabinets, indoor & outdoor vacuum circuit breakers, disconnectors, earthing switches, load switches, and various critical electrical components designed to optimize distribution grid stability and safety.
How Dehler high-voltage technologies safeguard core operations across various complex applications.
Wind turbines and solar photovoltaic fields are highly vulnerable to atmospheric lightning. Our specialized switchgear and lightning protection schemes secure the wind farm collector grids and solar inverter stations against transient switching overvoltages.
Traction substations experience constant load changes and severe harmonic pollution. Our vacuum circuit breakers and isolation products withstand transient peaks, ensuring smooth overhead line electrification and uninterrupted train operations.
Steel mills, coal mines, cement plants, and shipyards require highly secure local distribution setups. Dehler’s switchgear and reactive power compensation equipment stabilize local power grids, reducing line losses and maximizing energy savings.
Over the years, our company has diversified its product offerings and continuously upgraded its services, earning widespread acclaim. We have built a solid reputation and established long-term, stable partnerships with numerous suppliers and distributors globally. Strengthening quality management is our prerequisite for increasing market share.
We continuously leverage a systematic and standardized quality management system as a strong foundation to advance our company's capabilities. Therefore, we strictly adhere to national and international quality system standards, which not only strengthens our overall strength but also plays a crucial role in cultivating a positive corporate image.
“High-quality products, superior technology, and impeccable service” are the pillars of the Dehler philosophy.
Facing the opportunities and challenges of international industrial electrical development, our company has formulated a new development strategy and rapidly established a systematic, large-scale production model. In this new environment, we strive to innovate our business philosophy, enhance management capabilities, improve our market network, expand brand promotion, accelerate resource integration, and fully participate in market competition.
Discover our primary line of vacuum interrupters, substation cabins, contacts, and related components.
High-voltage stationary contacts are key components in high-voltage switchgears, providing consistent current transport links.
High-voltage plum blossom contacts are critical conductive components in vacuum circuit breakers, minimizing arc damage.
Spring-loaded flat contacts are core contact components indispensable for maintaining secure contact force over time.
High-voltage post insulators are special insulating components designed to resist environmental wear and electrical breakdown.
The power distribution cabinet is a robust electrical solution engineered for safety and ease of maintenance in heavy industrial setups.
Automatic power factor correction reactive power compensation cabinets enhance grid efficiency by managing inductive loads.
Suitable for power plants, substations, and industrial complexes seeking cost-effective, standard low voltage configurations.
The GCS drawer cabinet is an advanced withdrawable switchgear system offering high accessibility and continuous operations.
Expert engineering responses to common queries regarding power system surge protection.
Forging strong ties with top-tier material suppliers, electrical network operators, and research labs worldwide.
Based in China, with a global perspective, our company sincerely collaborates with partners from all sectors of the international community to deliver reliable power protection systems. We welcome inquiries and visits from global clients.
Factory Address: No. 271, Weishiqi Road, Yanpan Economic Development Zone, Yueqing City, Zhejiang Province, China.
Seeking specific surge voltage, residual voltage curve data, or layout drawings? Connect directly with our engineering department for rapid verification.
Submit RFQ / InquirySupporting components engineered for low line loss and safe load dispatching.
