TEST FACILITIES

Impulse generator (HAEFELY)

AC Generator

(TOKYO Transformers)

• - 400 kV, 20kJ, 4-stage Marx impulse generator with control panel, transient recorders and voltage divider
• - Used for impulse testing on HV apparatus
• - Used for educational and research activities of the department
• - Frequently used for insulator tests for CEB and transformer tests for LTL Pvt Ltd

• - 60 kV, 20 kVA, AC generator with regulating transformer and voltmeters and ammeters
• - Used for flashover tests on HV apparatus
• - Used for educational and research activities of the department

AC Generator II (NGK)

AC Generator III (PHENIX)

• - 60 kV, 30 kVA, AC generator
• - With regulating transformer, voltmeters and ammeters
• - Used for flashover tests on HV apparatus 
• - Used for pollution test on high voltage insulators

• - 100 kV, AC generator
• - With regulating transformer, voltmeters and ammeters
• - Used for flashover tests on HV apparatus
• - Used for educational and research activities

• - 20 kV Surge generator
• - Purchased under University INRC grants
• - Used for testing power and communication equipment with lightning induced voltages

• - With standard capacitor 100 pF and calibration kit
• - Purchased under Sida/Sarec program
• - Used for partial discharge measurements (PD level, current etc.)

Insulation Diagnostic System (IDA200)

Electrometer (KEITHLEY)

• - 0.1mHz to 1 kHz, 1 kV Dielectric spectrometers
• - Purchased under Sida/Sarec program
• - Used for measuring loss tangent and capacitance within a broad range of frequencies 0.1 mHz to 1 kHz on high voltage insulation such as transformers, cables, bushings, etc.

• - Purchased under Sida/Sarec program
• - Used for precise current, voltage measurements, including measurements of polarization, depolarization currents

Karl Fischer Titrator and Oil Test Cell (Metrohm)

Digital oscilloscope (Agilent Technologies)

• - Purchased under University INRC grants
• - Used for educational and research activities

• - Four channels, 500 MHz, digital oscilloscope
• - Purchased under University INRC grants
• - Can be used for recording impulse voltage and current waveforms

Laboratory Oven I (Gemmy Industrial Co.)

Laboratory Oven I (Binder)

• - Dimensions 47cm x 43cm x 60cm, volume 40 L temperature Ambient + 5ºC to 250ºC
• - Purchased under University research grants
• - Can be used for aging tests of material samples

• - Dimensions 74cm x 67cm x 90cm, volume 115 L temperature Ambient + 15ºC to 200ºC
• - Purchased under University research grants
• - Can be used for aging tests of material samples

Oil Extractor

Partial Discharge Detector (TETTEX)

• - Purchased under University research grants
• - Can be used for extracting oils from seeds i.e. sesame, castor, coconut
• - Used for educational and research activities of the department

• - Model distribution substation including, 100 kV, 33/0.4 kV transformer with DDLOs, surge arrestors, 33 kV and 400 V lines and two poles
• - Installed by CEB
• - Can be used for demonstrations and measurements

SOME OF THE RESEARCH ACTIVITIES

• -> Composite Insulator Performance.

• -> Leakage Current Patterns on Insulators.

• -> Transformer Condition Assessment.

• -> Power Transformer Insulation.

• -> Generator Condition Assessment.

• -> Generator Stator Insulation.

• -> Alternative Insulation.

• -> Lightning Related Issues.

SERVICES

• -> Engaging research activities directly related to the problems in Sri Lankan power system in collaboration with local industry like CEB.

• -> Testing of HV apparatus of the industry.

• -> Providing the HV Laboratory facility to other institutions for research activities.

• -> Design works.

COMMON HIGH-VOLTAGE TESTS

• -> HV insulator tests for CEB dry and wet flashover test, impulse test, mechanical breakdown test.

• -> HV impulse test for Lanka transformer Ltd.

• -> We are also engaged in the tests of HV cables, HV fuses and energy meter, circuit breakers etc.