Knowledge Hub
Technical Guides: Testing Methods, Standards & Selection
Vendor-neutral references on test methods, standards and equipment selection for transformer factories, power utilities and third-party laboratories. Every guide states the standards it refers to so you can check the source yourself.
CT vs PT Testers: What They Measure and How to Choose
A vendor-neutral comparison of CT and PT test programs: which parameters each family needs, how the test items differ, and when a combined CT/PT tester or a ratio-only set is the right buy.
Read the guideHow to Choose a Transformer Test Bench: A Selection Guide
A selection guide to transformer test benches: which test items apply to distribution and power transformers, and when a portable set, a bench or an automated line is the right fit.
Read the guideTransformer Winding Deformation Testing: Methods and Standards
A short circuit, a road journey or years of load cycles all leave their mark on a transformer winding. This guide compares the main detection methods and how to interpret their results.
Read the guideInsulation Resistance Testing: A Practical Field Checklist
Insulation resistance readings are easy to take and easy to misread. This checklist covers test-voltage selection, PI and DAR ratios, step-voltage and ramp tests, safety steps and preparation.
Read the guideIEC / IEEE / GB Standards Cross-Reference for High-Voltage Testing
Which standard governs a high-voltage test? This reference maps transformers, CTs and PTs, partial discharge and FRA to their IEC, IEEE and GB/DL documents.
Read the guideSetting Up a High-Voltage Test Laboratory: Equipment and Planning Checklist
Scope first, then measurement, then source, then building. A planning checklist for HV test halls: equipment layers, lab tiers, layout, services, commissioning and calibration.
Read the guideHow to use this knowledge hub
- 01Selection guides compare the equipment families that solve the same test problem, so you can see which one fits your test list and throughput before talking to any supplier.
- 02Method guides explain what a measurement actually detects, how to run it consistently in the field, and which standard defines the criteria.
- 03Standards references map the IEC, IEEE and Chinese GB / DL / JJG documents that govern each test domain, which is the fastest way to align a purchase enquiry with your acceptance procedure.