Guides

Retrofitting UHF partial discharge sensors onto operating GIS improves early fault detection without taking bays out of service. This guide covers sensor types, installation points, noise considerations and integration with monitoring systems.

Choosing a partial discharge detector supplier is a long-term decision. This 8-point checklist covers technology coverage, manufacturing substance, certifications, calibration, documentation, training, OEM support and after-sales – so the instrument becomes a capability, not a shelf item.

Utilities and contractors across Vietnam, Indonesia, Malaysia, Thailand and the Philippines are building inspection capability for expanding grids. This guide covers how to procure power testing equipment – especially live-line detection instruments – in Southeast Asia.

China is the largest source of partial discharge detection instruments for global utilities and contractors. This guide sets out what to evaluate when buying PD detectors from Chinese manufacturers – and how to qualify a supplier beyond the brochure.

A practical instrument set – PD detectors, cable testers, SF6 leak detectors and infrared acoustic imagers – lets a utility or service contractor run comprehensive energised inspections. Equipment-based inspection scales without a permanent on-site service team.

Infrared thermography finds heat, and acoustic imaging finds sound. Combined in a handheld imaging instrument, the two modalities locate loose connections, hot spots and partial discharge in switchgear and substations during a single inspection pass.

SF6 gas management is critical for GIS reliability in the Middle East, where heat and wide temperature swings stress gas compartments. Portable quantitative SF6 leak detectors locate leaks quickly and support a complete gas management programme.

A handheld PD survey using TEV, ultrasonic and HFCT instruments lets utilities inspect energised switchgear, transformers and cables without outages. This article sets out a practical survey plan that works for distribution substations in any climate.

Underground cables carry an increasing share of power in Southeast Asian cities. Oscillating wave test sets assess new cable installations, while clamp-on HFCT sensors provide ongoing PD monitoring for terminations and joints on operating circuits.

Lightning and tropical contamination stress surge arresters across Southeast Asia. Portable leakage current test instruments let utilities check arrester condition during routine patrols – without de-energising the line.