High Voltage Calibration and Testing Services in Bangladesh: Ensuring Safety, Reliability, and Compliance

With the rapid growth of power generation, transmission, and industrial infrastructure in Bangladesh, the demand for high voltage (HV) testing and calibration services is more critical than ever. High voltage equipment—including transformers, switchgear, insulators, circuit breakers, and cables—must be tested and calibrated regularly to ensure safe, accurate, and uninterrupted power delivery.

Professional high voltage services not only support equipment reliability but also help industries meet national and international standards like IEC, IEEE, and ISO.

🔌 What is High Voltage Testing and Calibration?

High voltage testing involves applying voltages higher than the equipment’s normal operating voltage to assess:

• Insulation strength

• Dielectric breakdown

• Leakage current

• Phase-to-ground and phase-to-phase integrity

High voltage calibration, on the other hand, ensures that instruments used to measure or generate HV (e.g., HV probes, meters, or sources) are accurate and traceable to recognized standards.

✅ Why Is High Voltage Service Important?

• Safety Compliance: Prevents electrical hazards, fires, and fatalities due to insulation failure.

• Asset Protection: Early detection of potential faults avoids costly equipment damage.

• Regulatory Requirement: Essential for utility companies, contractors, and factories to meet government and international electrical safety standards.

• Operational Efficiency: Reduces unplanned downtime and enhances equipment lifespan.

• Accredited Certification: Calibration reports are mandatory for audits and certifications (ISO, BSTI, PDB, PGCB).

🔍 Common High Voltage Tests Performed

• Dielectric Withstand Test (Hi-Pot Test)

• Insulation Resistance Test (using Megohmmeters)

• Partial Discharge Measurement

• Capacitance and Dissipation Factor (Tan Delta)

• Lightning Impulse Test

• AC and DC High Voltage Testing

• HV Cable Fault Location and Testing

🧪 High Voltage Instruments That Require Calibration

• High Voltage Probes

• HV Insulation Testers (Megger, Fluke, Kyoritsu)

• AC/DC Hipot Testers

• Capacitive Voltage Dividers

• Power Frequency Generators

• High Voltage Multimeters

• Current Transformers (CT) and Potential Transformers (PT)

• Relay Test Sets

🏭 Industries and Sectors Served

• Power Generation and Distribution (PDB, PGCB, DPDC, DESCO)

• Industrial Plants (textile, steel, cement, etc.)

• Renewable Energy (solar and wind farms)

• Electrical Testing and R&D Labs

• Construction and EPC Firms

• High Voltage Cable Manufacturers

🧰 Where to Get High Voltage Services in Bangladesh

✅ Top Service Providers

• BSTI (Bangladesh Standards and Testing Institution) – National authority for electrical standards and calibration

• LabAsia Calibration Services Ltd. – ISO/IEC 17025 accredited for HV testing and calibration

• Multitech Engineering & Calibration – Industrial HV equipment testing and certification

• BR Power Test & Calibration – Specializing in field testing for substations and transformers

• Authorized labs for Megger, Fluke, Tettex, Haefely, and Omicron test equipment

⚠️ Challenges in High Voltage Testing in Bangladesh

• Shortage of portable HV calibration equipment in remote areas

• Limited local expertise in advanced HV diagnostics like partial discharge

• Power fluctuations impacting test accuracy

• Delays in importing specialized HV tools and components

📄 What Should a High Voltage Calibration Certificate Include?

• Equipment details (model, serial number)

• Test parameters and standards used (e.g., IEC 60270, IEEE 4)

• Measured values and deviations

• Traceability statement

• Certificate number and technician signature

• Recalibration due date

🧯 Safety First: Best Practices

• Use PPE (gloves, boots, arc-rated clothing) during HV testing

• Ensure proper grounding and interlocks

• Keep safe distances from test circuits

• Use lockout-tagout (LOTO) during field tests

• Only trained professionals should conduct HV testing

🔚 Conclusion

High Voltage Calibration and Testing Services are essential in Bangladesh’s power-reliant economy. Regular HV testing protects lives, prevents equipment failure, ensures regulatory compliance, and strengthens confidence in electrical systems.

Choosing an accredited, experienced, and well-equipped service provider ensures your systems are tested and calibrated with precision, reliability, and professionalism.