Transformer testing equipment
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Megger - leaders in transformer testing The first insulation test set “Megaohm meter” was invented by Sydney Evershed (Evershed & Vignoles Limited). The MEGaohm metER was branded as “Megger” in 1903. Since branding, Megger has grown and evolved to become the leading manufacturer of portable substation testing equipment. Insulation testing and the word ‘Megger’ are synonymous in the electrical test industry, a position only maintained by continually designing world class products. Asset management plan Transformers have the single highest value of the equipment installed in substations...

1895 - First insulation test set invented by Sydney Evershed 1903 - Megger trademark registered 1923 - First multimeter with Amps, Volts and Ohms (AVO) 1965 - First low-weight tan delta/power factor insulation test set 1980 - First transformer ohmmeter with tap-changer discontinuity detection 1991 - Merger of the Megger Group (Megger, Biddle, Multi-Amp) 1995 - First dynamic resistance measurements for on-load tap-changers 1997 - First dielectric frequency response analyzer for insulation diagnostics in the field ■ 2009 - First portable 30 kV insulation test set 2010 - Megger patent on...

Core / Tank Transformer test equipment

TRAX Apps for various measurements/applications ■■ Power transformers ■■ Load tap-changers ■■ Reactors Transformer and substation test system The TRAX transformer and substation test system is designed to be a complete solution in transformer testing. TRAX is a multi-functional test system that replaces numerous individual testing instruments for testing of transformers and other system components addressing the need for a single test system capable of performing multiple tests. Testing with TRAX is a time saving and cost effective alternative to using separate instruments. TRAX provides up...

Winding resistance Demagnetization Load tap-changer (OLTC) continuity and dynamic resistance Turns ratio Excitation current Short-circuit impedance (Leakage Reactance) FRSL (frequency response of stray losses) Optional switchbox for one-time 3-phase connection Magnetic balance CT testing VT testing Voltage withstand ■ Circuit breaker ■ Single-phase relay ■ Ground/ earth/ impedance ■ Tan delta/ power factor and J TRAX SPECIFICATIONS Input Power Output Voltage 0 to 250 V AC 0 to 2200 V AC 0 to 12 kV AC (with TDX option) 0 to 300 V DC Output Current Frequency Range Output contacts 2, for...

DELTA SeriesTan delta / power factor test set ■ Accurate measurements in high noise and HV environments ■ Lightweight two-piece design, 14 kg and 22 kg ■ Automatic voltage dependency detection The DELTA 4000 Series can be used to measure the excitation current of transformer windings as well as to perform automatic tip-up tests for dry type transformers and HV turns-ratio testing (using an optional TTR capacitor) . ■ Individual Temperature Correction (ITC) ■ Dielectric frequency response (1 - 500 Hz) The DELTA 4000 Series is a fully automatic 12 kV insulation power factor/dissipation factor...

High precision capacitance and dissipation factor test set ■■ Very high accuracy and wide measurement range CDAX is a precision instrument that combines a bridge and direct (vector) capacitance and dissipation factor test set to be used with an external AC power source and a standard capacitor to form a complete measurement setup for capacitive, resistive and inductive loads. CDAX 605 is designed for laboratory and production line testing of electrical equipment insulation and insulating materials as well as calibration of CCVTs and other precision ratio devices. Testing can be performed at...

■ Automated measurement and analysis of moisture content, oil conductivity and tan delta/power factor ■ Individual temperature correction (ITC) of tan delta/power factor and oil conductivity ■ DFR measurements with AC test signals for reliable measurements in high - interference environments ■ New multi-frequency technique performs a complete insulation assessment in 22 minutes also suitable for use for bushings, current transformers, voltage transformers and virtually any other electrical component where tan delta and capacitance measurements are needed. All IDAX models have three...

VAX020 High voltage amplifier ■■ High voltage amplifier enables IDAX measurements at 2 kV test voltage ■■ Large frequency range, DC to 1 kHz ■■ Compact design, weight only 4.4 kg The testing capabilities of IDAX are extended with the addition of the high voltage amplifier VAX020. The voltage output increment from 200 V up to 2 kV (peak) is the most assertive solution to challenging DFR measurements in high interference environments (e. g. HVDC substations) or while measuring at very low frequencies on low capacitance objects (e.g. bushings and instrument transformers). VAX020 allows not...

S1 and MIT SeriesHigh current insulation resistance tester ■ Insulation testing up to 15 kV ■ Resistance range up to 30 Tfi ■ Operate from rapid charge Li-ion battery or AC source ■ Advanced memory with time/date stamp ■ Unique tough dual-case design providing additional user protection ■ Safety rated up to CAT IV - 1000 V up to 4000 m altitude ■ Stable readings in noisy environments SI and MIT Series high current insulation testers are ideal for transformer testing, cable, generator/motor, circuit breaker and general purpose testing. The products, depending on model, are packed with...

■ Highest accuracy and dynamic range in the industry ■ Complies with and exceeds international standards for sweep frequency measurements ■ Smallest and most rugged sweep frequency analyzer on the market ■ Advanced analysis and decision support built-in to the software. ■ Extensive file import-export capabilities including CIGRE and xml formats The FRAX series of sweep frequency response analyzers is based on comparative analysis where a measurement is compared to a reference fingerprint. The superposition of curves is a direct indication whether geometrical and/or electrical changes...