About PD Solutions

A leader in Partial Discharge testing in Thailand, backed by more than 10 years of experience and a team of specialist engineers.

About Us

Who We Are

PD Solutions Co., Ltd. is a leader in Partial Discharge (PD) testing in Thailand for both offline and online testing. Using advanced sensors and analyzers along with certified engineers specialized in both MV and HV systems, we are able to provide substantial service to esteemed clients. Equipment we offer PD testing for are Power Cable, AIS & GIS Switchgear, Motor & Generator, and Transformer.

Power Cable AIS & GIS Switchgear Motor & Generator Transformer

Our Expertise

Our company specializes in testing wide ranges of equipment for PD analysis. We have worked with power cables, GIS, transformers, rotating machines, etc. PD training courses are also available.

Education

What is Partial Discharge?

Partial Discharge (PD) is a localized electrical discharge that only partially bridges the insulation (solid, oil, gas etc.) between conductors and which can or cannot occur adjacent to a conductor. (IEC 60270)

A breakdown or discharge at insulation areas that are not connected between conductors. This is a partial deterioration of the insulation system. Generally, PDs are caused by an uneven electric field, heterogeneity or contamination in the insulation. Local electric stress concentration is higher than the critical point which causes PD.

Deterioration in an equipment's insulation allows PD to occur. Using sensors and analyzers to detect PD in equipment allows detection of deterioration before damage would occur.

Testing Strategy

Why & When to Test

Why Test for Partial Discharge?

PD activity is an indication of an incipient fault in HV insulation and is widely regarded as the best "early warning" indicator of the deterioration of aged insulation. Early detection helps prevent catastrophic failures and extend equipment lifespan.

When to Test for Partial Discharge?

PD testing should be performed during commissioning of new equipment, as part of routine preventive maintenance schedules, after repair or refurbishment, and whenever abnormal equipment behavior is detected.