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ZENITHSUN-China leading brand of Power Resistors

Powering Global Industries with 21 Years of Innovation and Trust

Powering Global Industries with 21 Years of Innovation and Trust

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In the dynamic landscape of power testing, where precision, reliability, and adaptability are non-negotiable, ZENITHSUN (Shenzhen Zenithsun Electronics Tech. Co., Ltd.) has emerged as a trailblazer with 21 years of dedicated expertise. As a leading integrated supplier of load banks and power resistors in China, the company’s intelligent load bank solutions have become the backbone of critical operations across 12 core sectors, earning the trust of Fortune 500 giants and renowned enterprises worldwide. From marine engineering to aerospace, from new energy vehicles to data centers, ZENITHSUN load banks are redefining the standards of power testing excellence.

A Comprehensive Portfolio for Every Power Testing Need

ZENITHSUN’s load bank lineup is engineered to meet the diverse demands of modern industries, boasting an impressive range of specifications and configurations. Covering AC, DC, resistive, inductive, and intelligent integrated types, these load banks offer unparalleled flexibility: power ratings span from 1KW to 50MW (1KVA to 50MVA), working currents from 1A to 50KA, and voltage options including AC single-phase/three-phase, DC 5V-1500V, and ultra-high voltages up to 150KV.
To tackle varying environmental challenges, the company provides multiple cooling solutions—air cooling, water cooling, oil cooling, and molten salt cooling—ensuring consistent performance even in the harshest conditions. Highlights of the product range include adjustable AC/DC load banks, power battery short circuit test load banks, brake load banks, and grounding load banks, all customizable to meet specific project requirements, including protection levels from IP20 to IP67.

6 Core Technologies Driving Unmatched Performance

At the heart of ZENITHSUN’s success lies its commitment to technological innovation, embodied in six core technologies that set its load banks apart:
  • Ultra-Small Size: Compact designs enable easy integration in space-constrained environments, from data center server rooms to aerospace equipment bays.
  • Electromagnetic Compatibility (EMC): Compliant with strict EMC standards, the load banks minimize electromagnetic interference, ensuring seamless operation alongside sensitive electronic devices.
  • Intelligent Control: Equipped with RS485/232 communication interfaces and RJ45 network ports, they support remote monitoring and control via mobile phones or computers through network cable, WIFI, or wireless network card connections.
  • Comprehensive Data Collection: Real-time capture of key parameters such as current, voltage, frequency, power, temperature, ripple, and harmonics, with graphical data visualization for intuitive analysis.
  • Robust Protection Systems: Multi-layered safeguards against over-temperature, overcurrent, over-voltage, fan failure, and grounding issues, coupled with instant alarm mechanisms to prevent equipment damage.
  • IoT and Cloud Integration: Enabling remote diagnosis, automation, and digitalization, the load banks align with the Industry 4.0 revolution, streamlining testing workflows and data archiving.

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Trusted by Global Leaders: Case Studies That Speak Volumes

ZENITHSUN’s load banks have been deployed in high-stakes projects across the globe, partnering with industry leaders to deliver reliable power testing solutions:
  • Aerospace: 10 units of 1500KW load banks for Tianjin Airlines’ ground equipment testing, ensuring the safety and efficiency of critical aviation systems.
  • New Energy: 3 units of 1.5MW load banks for renewable energy storage projects, and 350+ units for charging pile testing, supporting the global transition to clean energy.
  • Automotive: 3 units of 12000A/16000A load banks for CATL and 5 units of 500A 75mR load banks for BOSCH, validating the performance of power batteries and automotive electronics.
  • Marine Engineering: 50 units of water-cooled load banks customized for CSIC (China State Shipbuilding Industry Corporation), passing rigorous third-party tests for marine reliability.
  • Data Centers: 10 units of 53.5CDC 1A-610A load banks for data center power validation, and 30 units of 200KW load banks for ZTE’s communication data testing, ensuring uninterrupted operations.

Beyond Products: The ZENITHSUN Advantage

What truly distinguishes ZENITHSUN is its holistic approach to customer success, built on four pillars of excellence:
  1. Proven Expertise: Founded in 2004, the company operates 8000 square meters of production facilities with three specialized workshops, supported by a 100+ strong team and a 15+ member R&D engineering team boasting over 30 years of industry experience.
  2. Authoritative Certifications: Holding GJB 9001C (Weaponry Quality Management System), IATF 16949 (Automotive Quality Management System), and ISO 9001/14001/45001 certifications, ZENITHSUN’s products meet global quality and safety standards.
  3. Customer-Centric Innovation: With 68 patents (56 authorized) and 20% of annual profits invested in R&D, the company continuously evolves its solutions to address emerging industry needs, from anti-islanding experiments for solar farms to short-circuit testing for power batteries.
  4. Global Reach and Support: Serving over 10,000 customers across 56 countries and regions, including partnerships with CATL, BYD, HUAWEI, and TUV, ZENITHSUN provides responsive technical support and efficient delivery, backed by a 1400-square-meter high-standard material warehouse ensuring consistent supply.

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Join the Ranks of Industry Leaders

As industries accelerate towards electrification and digitalization, the demand for reliable power testing solutions has never been greater. ZENITHSUN load banks stand as a testament to what’s possible when innovation, quality, and customer focus converge. Whether you’re testing a generator set, validating a UPS system, or ensuring the safety of a new energy vehicle battery, ZENITHSUN has the expertise and technology to power your success.
To learn more about ZENITHSUN’s load bank solutions or request a customized quote, visit www.oneresistor.com, call +86 159 8947 2072, or email sales01@zsa-one.com.