Generators

• Insulation Resistance and Polarization Index Measurement.

• Capacitance and Tan delta Measurement.

• Partial Discharge Measurement.

MV / LV Motors

• Insulation Resistance and Polarization Index Measurement.

• Capacitance and Tan delta Measurement Sweep Frequency Test.

• Partial Discharge Measurement.

• AC Hipot Testing with Very Low Frequency (VLF) up to 42KV RMS.

• DC Winding Resistance Measurement.

Power Transformers

• Insulation Resistance and Polarization Index Measurement.

• Capacitance and Tan delta Measurement Sweep Frequency Test.

• Dialectical Frequency Response Analysis (DFRA Test)

• SFRA (Sweep Frequency Response Analysis) Test.

Transformer On-site Online/Offline PD Measurement

• On site On line PD Measurement - Electrical PD Measurement, Acoustic PD Measurement

• On site offline PD Measurement - During HV Induce.

Transformer Offline PD Measurement at OEM during FIT

• PD Measurement during LV Induce Test

• PD Measurement during HV Induce Test

CT's / PT's and CVT's On-site Online PD Measurement

• On site On line PD Measurement - Electrical PD Measurement.

• On site offline PD Measurement -Electrical PD Measurement.

MV Power Cables Testing By Very Low Frequency (VLF) Test Method - As per IEEE 400.2-2013

Offline Tests

• Insulation Resistance Measurement.

• VLF Withstand Test with Arc Pre-Location (APL)

• AC leakage current Measurement.

• Capacitance Value Measurement.

• Tan delta Value Measurement upto 3Uo Voltage.

• Partial Discharge Measurement upto 3Uo Voltage.

• Combined Tan delta and PD Measurement to analyze and locate faulty cable.

Measurement Layout VLF Withstand Test

Online PD Testing - MV Cables

Partial Discharge Measurement with PD Localization

EHV Cable Testing - Power Freq HV/PD/TD Testing

• On Site High Voltage Testing on HV/EHV XLPE Cables using HV Resonant Test system as per IEC 60840 & IEC 62067:2022

• PD Testing during HVAC Testing.

• Tan-Delta Measurement at rated voltage

On Line Temporary PD Monitoring of HV/EHV cables, GIS & EHV Transformers

• Temporary PD monitoring - Periodically assess PD activity in single assets over shorter periods of time,

• Based on the collected data, we are able to decide if and when it is necessary to schedule downtime and perform maintenance.

GIS Testing

• Up to 765kV class HV Testing

• PD Sensitivity & UHF PD Testing

• On Line PD Spot Testing & Temporary PD Monitoring

• SF6 Analysis & Leak detection

• SF6 Service Carts

Projects & Experience

D & H POWER has successfully executed multiple high-voltage projects, demonstrating our capability and expertise in the industry.

Completed Projects:

1. 132 KV Outdoor Termination Work for MSETCL, Maharashtra

o EHV Cable Jointing & Termination Work

o Successfully completed with high-performance and durable connectivity solutions

2. Pachpadra Refinery Cable Jointing & Terminations Work

o Expert installation ensuring reliable operation and performance

Testing Expertise

• High Voltage Test for 400kV Cables

• Offline PD Test up to 400kV Cable

• Online PD Test up to 400kV XLPE Cable, GIS, and CT/PT

• High Voltage Test up to 400kV Complete Substation & GIS Substation

• VLF Test up to 66kV Voltage Level

• Cable Test (AC/DC)

We have a joint venture with a leading Testing Company, ensuring the highest standards of reliability and accuracy in our services.