High-Voltage Cable Fault Finding
A critical first test is the insulation resistance test. This test checks for the electrical insulation integrity between each phase and phase to earth/ground. A failed IRT means that this transformer is not safe to use.
The Megger MRCT is a light weight, robust, portable unit used toperform demagnetization, ratio, saturation, winding resistance, polarity, phasedeviation, and insulation tests on current transformers. The MRCT automaticallycalculates ratio errors, saturation curves, and knee points. The MRCT providesa microprocessor-controlled variable voltage and current output and precisioninstrumentation for automatically testing single and multi ratio CTs, reducingtesting time and increasing productivity. The MRCT will directly connect tomulti ratio CT’s and perform all tests – saturation, ratio and polarity,winding resistance and insulation – on all taps with the push of a button andwithout changing leads.
Resistance of the transformer windings provides a measure of internal connection integrity. This test reveals mismatched connections, opens, and ›correct tap positions. Some transformers use tap changers to vary turn ratios by less than 1 %.
The Megger MRCT is a light weight, robust, portable unit used toperform demagnetization, ratio, saturation, winding resistance, polarity, phasedeviation, and insulation tests on current transformers. The MRCT automaticallycalculates ratio errors, saturation curves, and knee points. The MRCT providesa microprocessor-controlled variable voltage and current output and precisioninstrumentation for automatically testing single and multi ratio CTs, reducingtesting time and increasing productivity. The MRCT will directly connect tomulti ratio CT’s and perform all tests – saturation, ratio and polarity,winding resistance and insulation – on all taps with the push of a button andwithout changing leads.
Measurement of the ratio between the primary turns and the secondary turns is an essential test of transformer health. Internal shorts and open connections can lead to incorrect turn ratios for the intended use.
The Megger MRCT is a light weight, robust, portable unit used toperform demagnetization, ratio, saturation, winding resistance, polarity, phasedeviation, and insulation tests on current transformers. The MRCT automaticallycalculates ratio errors, saturation curves, and knee points. The MRCT providesa microprocessor-controlled variable voltage and current output and precisioninstrumentation for automatically testing single and multi ratio CTs, reducingtesting time and increasing productivity. The MRCT will directly connect tomulti ratio CT’s and perform all tests – saturation, ratio and polarity,winding resistance and insulation – on all taps with the push of a button andwithout changing leads.
The PI test measures insulation quality and provides valuable insights. It can show contaminated insulation and brittle-dry insulation even when the insulation resistance value is otherwise good.
The Megger MRCT is a light weight, robust, portable unit used toperform demagnetization, ratio, saturation, winding resistance, polarity, phasedeviation, and insulation tests on current transformers. The MRCT automaticallycalculates ratio errors, saturation curves, and knee points. The MRCT providesa microprocessor-controlled variable voltage and current output and precisioninstrumentation for automatically testing single and multi ratio CTs, reducingtesting time and increasing productivity. The MRCT will directly connect tomulti ratio CT’s and perform all tests – saturation, ratio and polarity,winding resistance and insulation – on all taps with the push of a button andwithout changing leads.
A short-circuit impedance test identifies the impact on a transformer in operation from a mechanical force that deformed its windings. Outdoor transformers are subject to the elements and must be inspected at installation and periodically thereafter.
The Megger MRCT is a light weight, robust, portable unit used toperform demagnetization, ratio, saturation, winding resistance, polarity, phasedeviation, and insulation tests on current transformers. The MRCT automaticallycalculates ratio errors, saturation curves, and knee points. The MRCT providesa microprocessor-controlled variable voltage and current output and precisioninstrumentation for automatically testing single and multi ratio CTs, reducingtesting time and increasing productivity. The MRCT will directly connect tomulti ratio CT’s and perform all tests – saturation, ratio and polarity,winding resistance and insulation – on all taps with the push of a button andwithout changing leads.
This test generates a magnetic field from the transformer and detects poor electrical connections, inter-turn shorts, gross core damage, and winding problems. It can also provide a mechanical assessment of the transformer.
The Megger MRCT is a light weight, robust, portable unit used toperform demagnetization, ratio, saturation, winding resistance, polarity, phasedeviation, and insulation tests on current transformers. The MRCT automaticallycalculates ratio errors, saturation curves, and knee points. The MRCT providesa microprocessor-controlled variable voltage and current output and precisioninstrumentation for automatically testing single and multi ratio CTs, reducingtesting time and increasing productivity. The MRCT will directly connect tomulti ratio CT’s and perform all tests – saturation, ratio and polarity,winding resistance and insulation – on all taps with the push of a button andwithout changing leads.
Multifunction transformer and substation test system
Simple tools for transformer maintenance testing
Protect your transformer by accurately assessing its degradation using the Megger solutions (TRAX multifunction tester) and help prolong its life
What is the health of your transformer? Do you know how long it will be prior to failure?
Continuous technical support and guidance post purchase
