Release Date: July 17, 2026
Source: DEMIKS POWER Official News Center
Keywords: partial discharge testing equipment, power frequency partial discharge-free test system, PD test instrument for switch-gear, high voltage insulation testing, IEC standard PD detection
Introduction
Recently, DEMIKS POWER, a professional manufacturer of high-voltage testing instruments, has reached a strategic in-depth cooperation with VOLTER ELECTRICAL (SHENZHEN) CO.,LTD. (FLTELE), a Sino-US joint venture high-voltage complete equipment manufacturer. VOLTER Electrical has fully introduced the power frequency partial discharge-free testing equipment independently developed by DEMIKS POWER, and built a professional high-voltage PD testing laboratory in its Shenzhen production base.
The professional partial discharge testing equipment is fully deployed for factory inspection, incoming material sampling test, and type test of 10kV to 40.5kV high-voltage switch-gear, ring main units, gas-insulated switch-gear, box transformers and power distribution components. This cooperation builds a full-process insulation quality control system for high-voltage power equipment manufacturing, creating a benchmark case for the global power equipment industry and providing replicable technical references for peer manufacturers.
Company & Product Highlights of Cooperation Parties
- VOLTER ELECTRICAL (FLTELE) & GRANDON TECHNOLOGY
As a high-end Sino-US joint venture power electrical enterprise, VOLTER Electrical focuses on R&D, production and global export of medium and high-voltage power distribution equipment. Supported by Hong Kong Grandon Technology Limited for overseas trade layout, its products are widely exported to Southeast Asia, the Middle East, North America and other international markets.
Core Product Lineup:
- High-voltage switchgear: KYN28 indoor switchgear, XGN15 ring main unit, SF6 environmental-friendly gas-insulated switchgear, 40.5kV high-voltage switch equipment
- Outdoor power distribution equipment: prefabricated box-type substation, integrated intelligent ring network cabinet, cable distribution box, outdoor switch station
- Low-voltage complete sets: MNS/GCS/GGD low-voltage distribution cabinet, reactive power compensation device and power distribution box
- Core components: vacuum circuit breaker, CT/PT transformer, lightning arrester and high-voltage insulating parts
With the upgrading of international power project standards, global clients have put forward extremely strict requirements on partial discharge indicators and insulation stability of power equipment. The traditional withstand voltage test can no longer meet the quality threshold of high-end export orders, which promotes VOLTER to introduce professional partial discharge testing equipment to realize independent full-inspection quality control.
- DEMIKS POWER: Technical Advantages of Power Frequency Partial Discharge-Free Testing Equipment
As a leading ISO-certified manufacturer of professional high voltage test equipment in China, DEMIKS POWER specializes in high-voltage insulation detection and customized power testing solutions. The independently developed power frequency partial discharge-free test system and core partial discharge testing equipment are flagship products tailored for high-standard factory inspection, type testing, and R&D verification of complete power distribution equipment. Boasting decades of industry expertise, innovative technology, and reliable performance, DEMIKS PD testing solutions have become a trusted choice for global power equipment manufacturers, with outstanding technical advantages and ultra-wide industry application coverage.
Core Technical Strengths:
- Ultra-low background PD & High Testing Precision: DEMIKS partial discharge testing equipmentfeatures an ultra-low internal partial discharge background (below 5pC, minimum 0.5pC for high-shielding models) and total harmonic distortion below 1%. It generates pure power frequency sine waves that perfectly simulate real power grid operating conditions, accurately capturing tiny insulation defects such as internal air gaps, metal burrs, and insulation aging without self-test interference. All products fully comply with global authoritative standards including IEC 60270 and GB 7354, ensuring precise and repeatable test results for industrial and utility scenarios.
- Ultra-wide Application Coverage for Full HV Product Lines: Versatile and adaptable, DEMIKS partial discharge testing equipmentsupports comprehensive detection for all medium and high-voltage power equipment. Its application scope covers gas-insulated switch-gear (GIS), ring main units, high-voltage switch cabinets, box-type substations, power transformers, insulators, high-voltage cables, and core electrical components. It meets full-cycle testing demands including incoming material sampling inspection, production process quality monitoring, finished product factory testing, and new product type test R&D verification.
- Intelligent Modular & Industrial-Grade Reliability: Adopting an integrated modular industrial design, the PD test system is equipped with an intelligent touchscreen control host, supporting automatic voltage rise, real-time PD pulse spectrum analysis, data recording, and one-click generation of standardized test reports. Built-in multi-level safety protection against over-voltage, short circuit, and breakdown ensures stable and reliable operation even in harsh factory environments, enabling efficient batch continuous testing and greatly optimizing production quality inspection efficiency.
- Global Standard Configuration for Export Quality Control: Tailored for international business scenarios, the partial discharge testing equipmentsupports multi-language operation and comes with complete English test report templates and official calibration certificates. It fully adapts to international factory audits, global EPC project bidding, and third-party certification requirements, helping power equipment manufacturers standardize export quality control and pass global project qualification reviews efficiently.
Core Cooperation Content Between DEMIKS POWER and VOLTER Electrical
This strategic cooperation focuses on building a standardized and intelligent insulation quality control system for high-end power equipment manufacturing, with the deployment of professional partial discharge testing equipment as the core:
- Build an independent PD testing laboratory: VOLTER Electrical deploys DEMIKS POWER power frequency partial discharge-free test system to realize 100% full factory inspection of all high-voltage complete sets of equipment, completely upgrading the traditional single withstand voltage test mode.
- Full-link defect screening: Realize three-dimensional quality control of incoming component sampling, production assembly process inspection and finished product overall PD test, effectively eliminating hidden dangers such as metal burrs, internal air gaps, suspension potential and gas chamber sealing defects.
- Joint product technology iteration: Relying on high-precision partial discharge testing equipment, the two parties optimize the insulation structure and sealing process of gas-insulated equipment, jointly develop low-PD high-end power distribution products, and enhance the core competitiveness of products in the global high-end market.
- Standardize export quality certification: Uniform and traceable PD test data and official reports help VOLTER and Grandon Technology quickly pass international factory audits, reduce third-party testing costs and shorten the delivery cycle of overseas orders.
Core Competitive Advantages of VOLTER Products After Equipped with DEMIKS PD Testing Equipment
- Realize differentiated high-end product quality
Most small and medium-sized power equipment manufacturers only conduct simple withstand voltage tests without professional partial discharge testing equipment, unable to provide effective PD test data. VOLTER can provide original PD test curves and qualified reports for each piece of equipment, proving ultra-low partial discharge performance and ultra-high insulation reliability, forming obvious product differentiation and high-end premium capability.
- Improve bidding and overseas market access capabilities
In global power grid bidding, new energy projects and overseas EPC general contracting projects, independent PD testing laboratory and complete quality inspection equipment are important scoring indicators for supplier qualification. With DEMIKS POWER test equipment, VOLTER successfully breaks the threshold of high-end projects and gains greater competitive advantages in international market competition.
- Reduce production costs and operational risks
Independent batch PD self-inspection replaces high-cost third-party testing, saving a lot of annual certification and testing expenses. Detecting and repairing insulation defects in the production stage avoids finished product rework and scrap loss. Strict factory PD control effectively reduces equipment failure rate, insulation breakdown accidents and after-sales maintenance costs during operation.
- Upgrade after-sales technical service barriers
The portable PD testing unit supports on-site retesting and fault diagnosis of overseas projects, quickly locating discharge defects, greatly improving overseas after-sales response efficiency, and building technical service advantages that pure trading companies cannot match.
Industry Reference Value & Development Significance
The in-depth cooperation between DEMIKS POWER and VOLTER Electrical sets a typical industry model of testing equipment manufacturers empowering power equipment manufacturing and upgrading. With the continuous tightening of global power equipment safety standards, professional partial discharge testing equipment has become essential core hardware for high-end power equipment factories to enter international markets.
For the power distribution equipment manufacturing industry, embedding PD detection into the whole process of incoming material inspection, production assembly and finished product delivery is the key to stabilize product quality, reduce operational risks and expand high-end overseas markets. The upstream and downstream technical synergy between DEMIKS POWER and VOLTER provides a replicable high-quality development path for the global power equipment manufacturing industry.
Enterprise Interview & Outlook
DEMIKS POWER Marketing Director: “Partial discharge testing is the most critical inspection method to evaluate insulation safety and long-term service life of high-voltage power equipment. As a professional global supplier of high voltage test equipment and PD testing solutions, we focus on developing high-precision, standard-compliant partial discharge testing equipment for the power manufacturing industry. Our strategic cooperation with VOLTER Electrical marks a key step in empowering high-end power equipment intelligent quality control. We will continue to leverage our technological innovation and industry experience to provide reliable testing solutions for global clients, helping them upgrade product quality and expand international market influence.”
Production Director of VOLTER Electrical: “The introduction of DEMIKS POWER professional PD test system has made up for our independent quality inspection capability in high-end partial discharge testing. Our products’ insulation performance and PD indicators have reached the international leading level, which greatly improves our competitiveness in domestic grid bidding and overseas high-end projects. We will maintain long-term strategic cooperation with DEMIKS POWER to continuously optimize product quality and create more reliable high-end power distribution equipment for global power projects.”
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Learn More
For more details about partial discharge testing equipment, power frequency partial discharge-free test solutions and high-voltage laboratory construction cases, please visit the official website of DEMIKS POWER: https://demikspower.com
