Article List
- Primary Vs. Secondary Injection Testing: Key Differences And Equipment Selection GuideEfficient and safe power testing is fundamental to the reliable operation of the power grid. Whether it's commissioning testing of newly built substations, routine maintenance, or troubleshooting, the accuracy and safety of test results largely depend on the selection of the right equipment. In the
- How To Diagnose High-Voltage Circuit Breaker Mechanical And Contact Faults Without Dismantling: A Field GuideIntroductionHigh‑voltage circuit breakers are the last line of defense in modern power grids. When a fault occurs, they must interrupt massive short‑circuit currents within milliseconds—often after sitting idle for months. Failure is not an option, yet industry data shows that more than half of breaHot Product Promotion September 02, 2026
- VLF-60KV AC Hipot Tester for 20kV Power Cables ready for shipmentRecently we completed the production of VLF-60KV AC Hipot Tester and arranged the shipment to our customer.VLF-60KV is suitable for conduct AC withstand voltage test of power cables up to 20KV. The output frequency are 0.1Hz,0.05Hz,0.02Hz and 0.01Hz. LCD touch screen for easy operation.We have 30kV-Company News August 25, 2026
- Solving Field Challenges in DC Withstand Voltage Testing for Photovoltaic And Energy Storage ProjectsIn large-scale ground-mounted photovoltaic power plants and energy storage system projects, the quality of DC withstand voltage and leakage current testing directly affects grid connection nodes, equipment lifespan, and asset safety. However, field conditions often differ significantly from the ideaHot Product Promotion August 25, 2026
- [Countdown] Only 1 Week to Middle East Energy 2026 Dubai: Visit Chongqing Gold at Booth Z3.A03!Exhibition Name: Middle East Energy 2026. Address: Dubai World Trade Centre, Dubai,UAE. Exhibition Time: September 1-3,2026. Booth No.: Z3.A03. Company Name: CHONGQING GOLD MECHANICAL & ELECTRICAL EQUIPMENT CO.,LTD. Contact Person: ChristineCompany News August 25, 2026
- AC Resonance Test System Configuration: Step-by-Step Field GuideTechnicians with experience in high-voltage field commissioning have often encountered this challenging scenario: the team arrives at the work site, the power outage window is limited, and they are preparing to conduct AC withstand voltage tests on XLPE cables and GIS equipment, but the reactive powHot Product Promotion August 19, 2026
- CHONGQING GOLD Participates in Middle East Energy(MEE) 2026 in DubaiChongqing Gold Mechanical & Electrical Equipment Co.,Ltd is pleased to announce its participation in Middle East Energy (MEE)2026, the largest Electrical, Electronics, and Energy exhibitionin the Middle East region. The event will take place from September 1–3, 2026, at the Dubai World Trade Centre.Company News August 13, 2026
- Why Does Contact Resistance Change with Test Duration?Loop resistance testing is the most basic and easily underestimated item in the preventive testing of high-voltage circuit breakers. Many field personnel are accustomed to simply connecting the test clamp, pressing the start button, reading the data, recording it, and calling it a day—this process iHot Product Promotion August 12, 2026
- How To Slash Transformer Maintenance Downtime Safely: The Power of 3-Phase Testing And Auto-DemagnetizationEngineers who have worked in substations know that there is no room for negotiation regarding outage windows. For industrial users, every hour of extended outage time can easily result in tens of thousands of dollars in lost energy. Beyond the direct economic impact, the logistical pressure of reschIndustry News August 05, 2026
- AC Hipot Tester Capacity: How to Calculate kVA Matrix & Avoid OverpayingHow to select the capacity of a power frequency withstand voltage test device? This article analyzes the kVA calculation formula under the IEC/IEEE standard, provides a quick reference table for capacity selection of test objects such as 10kV to 110kV cables and transformers, and compares and analyzes the overseas 60Hz and domestic 50Hz environments to help you accurately match equipment, avoid blindly leaving margins, and truly save on procurement costs.Industry News July 30, 2026