Strategic Supply Cooperation Launched | DEMIKS Power, Trusted HV Power Test Equipment Supplier, Delivers Reliable Test Instruments for Transformer & Switch–gear Manufacturers

News Abstract

Against the rapid expansion of power distribution equipment manufacturing capacity under the new power system framework, factory delivery tests and type test standards for indoor ring main unit, solid insulated switch-gear, dry-type high voltage transformer and complete power distribution switch-gear have become increasingly stringent. As a professional HV power test equipment supplier, DEMIKS Power has reached long-term stable supply cooperation with multiple distribution equipment manufacturers including Dalian Northern Senyuan Electric Co., Ltd. Our full range of stable, user-friendly high voltage test equipment fully covers the whole production line factory inspection demands of transformers, ring main units and solid insulated gas insulated switch-gear, providing one-stop standardized quality inspection laboratory solutions for all high voltage complete set manufacturers.

1. Industry Cooperation Background: Urgent Quality Inspection Demand for Distribution Equipment Factories

Major domestic power distribution equipment manufacturers specialize in manufacturing indoor high voltage ring main unit, solid insulated switch-gear, dry-type high voltage transformer and complete power distribution switch-gear. Every high voltage product must complete full electrical tests including power frequency withstand voltage, partial discharge, transformation ratio and loop resistance before delivery, to comply with GB, IEC, ANSI and other domestic & international grid access standards. Traditional testing instruments suffer unstable performance, complex operation logic, high background partial discharge interference and poor compatibility with various switch-gear models, which restrict mass inspection efficiency and factory pass rate of finished products. Transformer and ring main unit manufacturers are in urgent need of a professional HV power test equipment supplier to deliver full-set test instruments with stable quality, simple operation, fully compatible with all types of high voltage distribution products, and help build standardized factory inspection stations. Against this industry demand, DEMIKS Power leverages years of R&D experience in high voltage insulation testing, launching an integrated supply & technical service cooperation model for complete distribution equipment factories, with test equipment perfectly matched to inspection scenarios of solid insulated switchgear, dry-type transformers and indoor ring main units.

2. Full Portfolio of Test Equipment Supplied by DEMIKS Power for All Distribution Products

As an all-in-one HV power test equipment supplier, DEMIKS Power supplies a complete series of high voltage testing instruments for manufacturers of transformers, indoor high voltage ring main unit, solid insulated switch-gear, dry-type high voltage transformer and complete power distribution switch-gear, covering all factory delivery test items:

1. Partial Discharge Free Power Frequency Withstand Voltage Test System, Partial Discharge Free Test Transformer This core withstand voltage equipment is specially developed for insulation test of solid insulated switch-gear, indoor ring main unit and dry-type high voltage transformer. With ultra-low inherent partial discharge design, it can perform simultaneous power frequency hipot test & partial discharge detection to identify invisible defects such as insulation air bubbles, internal cracks and assembly damage. The equipment features stable output voltage, one-click automatic voltage boost, timed voltage holding and instant breakdown cut-off protection. The operation logic is highly user-friendly, and front-line inspectors can master full operation within a short time, suitable for mass cyclic inspection of switchgears in workshop.
2. Comprehensive Transformer Test Equipment (Transformation Ratio Tester, DC Resistance Tester, No-load & Load Test Bench) Customized for factory inspection of dry-type high voltage transformers, it automatically measures winding transformation ratio, vector group, DC resistance and loss parameters, stores test data and generates standardized reports, eliminating manual calculation errors and low efficiency during mass transformer inspection.
3. Specialized Test Instruments for Switch-gear (Loop Resistance Tester, HV Switch Mechanical Characteristic Tester, Relay Protection Calibrator) Designed for full performance test of circuit breakers, earthing switches and secondary circuits of indoor high voltage ring main unit, solid insulated switch-gear and complete power distribution switch- It captures contact resistance, opening & closing timing and protection action logic with high precision. The lightweight main unit comes with simple wiring and visualized touch operation, greatly lowering on-site test operation difficulty.
4. Supporting Auxiliary HV Test Devices: High Voltage Capacitive Divider, Insulating Oil Dielectric Strength Tester, Earth Resistance Tester and other auxiliary instruments All supplied test equipment share two core advantages: stable & reliable performance, easy to operate. All internal components adopt industrial-grade standards, maintaining zero data drift and zero breakdown under long-duration continuous workshop operation. The full product line is equipped with intelligent touch control system, pre-set standard test procedures and parameter templates for power distribution equipment. No complex programming is required, new operators can complete full hipot, ratio and loop resistance tests quickly, cutting factory inspection training cost drastically.

3. On-Site Workshop Application: Full Factory Inspection for Ring Main Unit & Dry-Type Transformer

Taking the cooperation project with Dalian Northern Senyuan Electric Co., Ltd. as a typical case, the full set of HV power test equipment from DEMIKS Power has been deployed in the manufacturer’s workshop, conducting complete electrical tests on self-produced solid insulated switchgear, indoor high voltage ring main unit and dry-type high voltage transformer finished products:

1. After switchgear assembly, DEMIKS partial discharge free power frequency withstand voltage test system & partial discharge free test transformer are used to perform synchronous hipot and PD test on solid insulation cavity, busbar and disconnector, to verify overall insulation withstand capacity.
2. After hoisting dry-type high voltage transformers into position, transformer ratio tester and DC resistance tester are applied to verify winding electrical parameters.
3. Loop resistance tester and mechanical characteristic tester check contact performance and switching operation of complete power distribution switchgear.
4. The whole testing workflow can be fully operated by ordinary workshop inspectors independently. The equipment runs stably without abnormality during continuous mass testing, with excellent repeatability and consistency of test data, significantly lifting one-time pass rate of factory finished products, helping the factory smoothly pass third-party grid type test certification and 3C factory certification. Technical manager of the partner factory commented: “As a professional HV power test equipment supplier, DEMIKS Power delivered full-set test equipment with stable, reliable quality and easy operation, fully matching inspection demands of our full product line including indoor high voltage ring main unit, solid insulated switchgear and dry-type high voltage transformer. The instruments have low failure rate and responsive after-sales service, completely solving past production pain points of unstable test equipment and complicated operation.”

4. Long-Term Strategic Cooperation Value & Future Industry Layout

The launch of this deep supply cooperation marks that DEMIKS Power, a trusted premium HV power test equipment supplier, has established a standardized equipment supporting service system targeting manufacturers of transformers, indoor high voltage ring main unit, solid insulated switch-gear, dry-type high voltage transformer and complete power distribution switchgear.

1. Product R&D: Continuously upgrade partial discharge free power frequency withstand voltage test system, partial discharge free test transformer, comprehensive transformer tester and switchgear test instruments, customize integrated testing solutions based on factory voltage class and production capacity.
2. Technical Service: Provide full-chain supporting service including on-site equipment commissioning, operator hands-on training, annual instrument calibration and lifetime technical support for all partner manufacturers.
3. Global Market Expansion: Expand long-term supply cooperation with power distribution equipment manufacturers nationwide, meanwhile supply full-set HV power test equipment compliant with IEC & ANSI international standards for overseas distribution equipment exporters, empowering domestic high voltage switchgear brands to enter global markets. In the future, DEMIKS Power will keep deepening the HV high voltage power testing industry. With full-series stable, easy-to-operate test instruments, we will support more transformer, ring main unit and solid insulated switchgear manufacturers to upgrade quality inspection systems, accelerating the standardization and intelligent upgrade of factory delivery testing for medium & high voltage power distribution complete sets.