Insulation Resistance Testing: PI, DAR and IEEE 43 Explained
How to test insulation resistance on motors, cables and transformers: spot test, PI, DAR, test voltage, temperature correction and IEEE 43 limits.
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Technical blog
Practical guides to electrical testing, measurement, calibration and regulatory compliance in Mexico, written by our engineers.
Vector Network Analyzers: S-Parameters and Calibration Guide
A practical VNA guide: S-parameters, SOLT, TRL and ECal calibration, cal kits and verification, plus antenna, cable, filter and amplifier measurements.
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Industrial Vibration Analysis: Faults, Spectra and ISO 20816
How vibration analysis finds unbalance, misalignment, looseness and bearing defects: measurement points, FFT spectra and ISO 20816 zones.
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VLF and Hipot Testing of MV Cables: An IEEE 400.2 Guide
Why 0.1 Hz VLF suits XLPE cables, withstand vs. diagnostic tests, tan delta, IEEE 400.2 guidance and safe preparation for MV cable testing.
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Power Quality and Mexico’s Grid Code: A Compliance Guide
What Mexico's grid code requires of industrial loads: harmonics, flicker, unbalance, power factor, Class A analyzers, logging time and prep steps.
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Rent vs. Buy Test Equipment: A Decision Framework
Rent or buy test equipment? Compare utilization, calibration, obsolescence, OPEX vs. CAPEX, Mexican import lead times and training.
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NIST Traceability Explained for ISO 9001 and IATF 16949 Audits
What metrological traceability means, what auditors check under ISO 9001 7.1.5 and IATF 16949, and how it differs from ISO/IEC 17025.
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Transformer Oil Breakdown: ASTM D877 vs D1816 vs IEC 60156
How ASTM D877, ASTM D1816 and IEC 60156 differ for transformer oil breakdown voltage: electrodes, gap, sampling, moisture and test frequency.
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Ground Resistance Testing in Mexico: Methods, NOM-022, IEEE 81
Fall-of-potential, 3/4-pole, clamp-on and Wenner soil resistivity explained, plus what NOM-022-STPS and NOM-001-SEDE require for plants in Mexico.
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Infrared Thermography for Electrical Maintenance: A Field Guide
What IR thermography finds in electrical panels, how to survey under load, classify hot spots by delta-T per NETA, report results, and its limits.
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