High Voltage Testing

High Voltage Testing Laboratory is an ISO/IEC 17025 accredited laboratory providing quality services on the testing of high voltage transmission and distribution equipment for the electricity supply industries. With the wide ranging facilities , our services are available to manufacturers and independent users.

Services
Presently we provide the following services:

• Laboratory Testing On MV/HV Equipment ; Transformer, Cable, Switchgear, Instrument Transformer & Accessories
• On-Site HV Calibration
• On-Site Diagnostic Testing for MV/HV Equipment
• Training and Consultancies
• MV Cable Type Test — Electrical Tests
• Insulated Piercing connector — Routine and Sampling Tests
• Street lighting components — Routine and Sampling Tests

Our Test
1.0 Laboratory Testing:

• Dry Alternating Voltage Power Frequency Withstand Test (up to 400kV rms)
• Dry Full and Chopped Lightning Impulse Voltage Withstand Test ( up to 1200kV peak)
• Dry Switching Impulse Voltage Withstand Test ( up to 1080kV peak)
• Direct Current Voltage Withstand test ( up to 280kVpeak)
• Partial Discharge Measurement & Fault Location Detection on New Cable up to 100kV
• Load Cycle Test for Power Cable
• Routine and sampling test for IPC
• Routine and sampling test for street lighting components

2.0 On-Site HV Calibration:

• Power Frequency High Voltage Calibration up to 1000kV
• Impulse Voltage Calibration up to 2500kV
• DC Voltage Calibration up to 1500kV
• HV Meter Calibration

3.0 On-Site Testing for Transformer and Instrument Transformer:
Transformer

• Insulation Resistance
• Winding Resistance Measurement
• Turns Ratio
• Dielectric Dissipation Factor / Tan Delta
• Excitation Currents
• Frequency Response Analysis (FRA)
• Recovery Voltage Measurement (RVM)
• Frequency Dielectric Spectroscopy (FDS)
• Polarization Depolarization Current (PDC)
• On-line Acoustic Partial Discharge
• Dynamic winding resistance measurement (tap changer)
• Vibro-acoustic measurement (tap changer)

Instrument Transformer

• Winding Resistance Measurement
• Ratio, Burden and Polarity
• Phase and Magnitude Error
• Secondary Burden
• Magnetization Curve
• Dielectric Withstand Voltage
• Circuit Continuity

Facilities
Our laboratory is equipped with state-of-the-art testing and measuring systems. The equipments offer a high degree of precision in the testing.

• Impulse Generator (1200kV, 60kJ)
• AC Test System (400kV, 1000kVA)
• Resonance Test System (100kV, 1000kVA)
• HV Test Kit (200kV 5kVA AC, 10mA 280kV DC, 280kV 490J Impulse)
• On-Site HV Calibration System
• On-Site Diagnostic Testing (Tan delta, Partial Discharge, FRA, FDS, PDC, Turn Ratio, Winding Resistance)
• Street lighting and IPC test equipment

Please download the form below to request the laboratory services.
For calibration : HV Calibration Request Form
For testing : HV Testing Request Form