L'équipement de test automatique d'élévation de température DEMIKS DDL-6300L a été mis en service chez Jiangsu Pacific Electric (CPEPE), permettant des tests de performance rigoureux pour les transformateurs de gamme complète.

Diriger

Recently, the self-developed DDL-6300L automatic temperature rise test system from Shanghai Demiks Power Technology Co., Ltd. (DEMIKS POWER) has completed installation, commissioning and formal operation in the finished transformer testing workshop of Jiangsu Pacific Electric Power Equipment Co., Ltd. (CPEPE). This high-voltage automatic temperature rise testing equipment is developed for full series of oil-immersed, dry-type and special rectifier transformers, realizing fully automatic load temperature rise test. It establishes a standardized testing system for performance verification of CPEPE’s transformers before delivery, and delivers a benchmark reference solution for transformer manufacturers nationwide to select automatic temperature rise test equipment.

1. Corporate Background of Two Partners

Jiangsu Pacific Electric Power Equipment Co., Ltd. (CPEPE)

As a high-tech enterprise leading transformer manufacturing in the Yangtze River Delta, CPEPE specializes in full-range transformers from 10kV to 220kV, including transformateurs de puissance immergés dans l'huile, transformateurs de distribution de type sec, traction rectifier transformers for rail transit, wind power boost transformers and special industrial furnace transformers. Its products are widely supplied to State Grid, rail transit projects, overseas substations and new energy power stations, with an annual production capacity of 3000MVA. Export markets cover Southeast Asia, the Middle East and Latin America. Complying strictly with GB/T 1094, IEC 60076, ANSI and other domestic & international standards, temperature rise load type test is a mandatory procedure for every finished transformer before shipment.

Company Website:http://en.cpepe.cn/

Shanghai Demiks Power Technology Co., Ltd. (DEMIKS POWER)

DEMIKS POWER focuses on R&D and manufacturing of high-voltage electrical test equipment. Core product lines include automatic temperature rise test equipment, variable frequency series resonance withstand voltage devices, décharge partielle detectors, dielectric loss testers, transformer ratio comprehensive testers and full set of transformer factory testing instruments. The DDL-6300L automatic temperature rise test system is the flagship model, designed for load temperature rise test of large & medium-capacity transformers, perfectly matching mass testing scenarios of large transformer factories. Its automation level, data acquisition precision and long-term operation stability reach advanced standards of international equivalent equipment. Company Website:www.demikspower.com

2. Application Details of DEMIKS DDL-6300L Automatic Temperature Rise Test Equipment

2.1 Testable Product Range (Matching CPEPE’s Full Product Line)

• Oil-immersed distribution transformers: S11/S13 energy-saving 10kV & 35kV distribution transformers
• Large capacity main transformers: 110kV / 220kV grid main transformers
• Dry-type transformers: SCB series epoxy cast dry-type transformers
• Special transformers under harsh working conditions: Rail transit traction rectifier transformers, wind power boost transformers, mine flameproof transformers, industrial furnace rectifier transformers

2.2 Core Testing Purposes of Temperature Rise Equipment

Transformer temperature rise test is a mandatory type test to judge product service life, insulation safety and loss performance. DEMIKS automatic temperature rise test equipment simulates long-term full-load operation of transformers to complete the following core verifications:

1. Apply rated load current continuously, monitor real-time temperature rise curves of windings, iron cores, tap-changers and top oil temperature of the oil tank;
2. Verify heat dissipation efficiency of product cooling structure, panel radiators and cooling system;
3. Calculate load loss values to check whether transformer energy efficiency meets national energy-saving standards;
4. Monitor heat resistance performance of insulating materials under long-term constant temperature operation, avoiding breakdown risks caused by overheating during long-term service;
5. Automatically collect, store and export standardized test reports, satisfying acceptance audit requirements of domestic power grid projects and overseas CE / ANSI projects.

2.3 Core Advantages of DDL-6300L Automatic Temperature Rise Test Equipment (Industry Selection Guide)

1. Fully automatic integrated control: Integrated industrial PC operation, unattended operation, automatic current regulation, constant temperature maintenance, data collection and shutdown judgment, greatly reducing manual testing errors;
2. 6300A wide-range current output covering all capacity products: Continuously adjustable current from 0 to 6300A, suitable for transformers ranging from hundreds kVA to dozens of MVA, one single set covers all product lines of the factory;
3. Multi-channel synchronous temperature acquisition: Support dozens of thermocouples for synchronous temperature measurement, accurately capture temperature changes at multiple points of three-phase windings, iron cores and tap-changers;
4. Multi-level safety interlock protection: Multi-stage protection against over-current, over-temperature, electric leakage, overtime and abnormal oil pressure, eliminating safety accidents such as equipment fire and breakdown during testing;
5. Standardized data output: Built-in dual report templates for IEC and national standards, one-click export of PDF test documents, matching third-party audit for domestic power grid bidding and overseas export projects;
6. Industrial-grade hardware for long-term stable operation: Water-cooled current boosting unit and corrosion-resistant cabinet, adapting to 24-hour non-stop mass testing in workshops.

3. Forward-looking Equipment Selection Guide for the Industry

The successful cooperation between CPEPE and DEMIKS POWER provides clear selection standards for transformer manufacturers purchasing automatic temperature rise test equipment:

1. Priority of capacity matching: Medium & large transformer factories should select automatic temperature rise test equipment with 6000A or above measuring range, one single set covers high/low voltage, conventional and special transformers, avoiding repeated investment on multiple small-current devices;
2. Automation capability as core indicator: Phase out outdated manual current-regulating temperature rise equipment. Fully automatic closed-loop industrial PC systems cut manual labor by 70% and improve test data consistency, meeting strict factory audit requirements of high-end overseas customers;
3. Compliance supporting requirements: Equipment shall be equipped with multi-standard report templates of national standard, IEC and ANSI, adapting to project acceptance in power grid, new energy and rail transit fields at home and abroad;
4. Long-term operation stability: Prioritize industrial-grade water-cooled current boosting modules for workshop mass testing scenarios to guarantee fault-free operation all year round;
5. One-stop supporting equipment: Prefer manufacturers supplying full set of testing equipment including partial discharge, withstand voltage and ratio testers simultaneously, realizing unified system connection and integrated after-sales service for workshop testing lines.

4. Statements from Two Enterprises

Technical Director of Jiangsu Pacific Electric commented: “With expanding transformer orders at home and abroad, we urgently needed a high-precision fully automatic temperature rise testing system covering all our product lines. After putting DEMIKS DDL-6300L automatic temperature rise test equipment into use, the testing cycle of each transformer is shortened by 30%, and traceability of test data is significantly improved. It fully meets strict testing requirements of our 220kV main transformers and export special transformers, laying a solid testing foundation for our products to enter global markets.”

Sales Director of Shanghai Demiks Power introduced: “DDL-6300L automatic temperature rise test equipment is core testing equipment customized for medium & large transformer factories. Its formal operation at CPEPE represents recognition of our technical strength in high-voltage testing equipment by leading transformer manufacturers in the Yangtze River Delta. In the future, DEMIKS POWER will continuously upgrade automatic temperature rise test equipment and full set of high-voltage test devices, delivering efficient, compliant and one-stop pre-delivery testing solutions for domestic transformer manufacturers.”

Conclusion

The successful commissioning of DEMIKS POWER DDL-6300L automatic temperature rise test equipment at Jiangsu Pacific Electric proves that domestic high-end automatic temperature rise testing equipment has comprehensive competitiveness to replace imported alternatives, providing a replicable implementation case for national transformer manufacturers to upgrade equipment and rebuild intelligent testing workshops. Shanghai Demiks Power will continue to deliver standardized temperature rise testing solutions for distribution transformer, main transformer and special transformer manufacturers, supporting quality upgrading and global export of power equipment industry.