Question 1

What brands does PrecisionTest distribute in Thailand?

Accepted Answer

PrecisionTest is the authorized distributor of Megger, Seaward, and Chauvin Arnoux in Thailand. Our product range covers Insulation Testers, Earth Resistance Testers, Power Quality Analyzers, Cable Fault Locators, and Pat Testers for industrial and commercial applications.

Question 2

How do I request a quotation for electrical testing equipment?

Accepted Answer

You can request a quotation by filling out the RFQ form at megger-precisiontest.com/rfq, calling us at 092-257-9979, or messaging LINE @PrecisionTest. Our team responds within 24 business hours with a formal quotation.

Question 3

What does an insulation tester measure?

Accepted Answer

An insulation tester (also called a megohmmeter) measures insulation resistance in cables, motors, transformers, and switchgear. It applies a high DC voltage (typically 500V–5000V) and measures the resistance in megaohms (MΩ) to detect insulation degradation before it causes failures or electric shock hazards.

Question 4

What is an earth resistance tester used for?

Accepted Answer

An earth resistance tester measures the resistance of grounding systems to verify that electrical systems are safely earthed. Low earth resistance (typically below 5Ω for most industrial systems) ensures fault currents can flow safely to earth, protecting equipment and personnel from electrical shock.

Question 5

What is a Power Quality Analyzer?

Accepted Answer

A Power Quality Analyzer monitors and records electrical parameters such as voltage, current, frequency, harmonics, power factor, and transients on electrical systems. It helps identify power quality issues that cause equipment damage, energy waste, or production downtime.

Question 6

What after-sales services does PrecisionTest provide?

Accepted Answer

PrecisionTest provides full after-sales support including on-site product demonstrations, operator training, calibration referrals, warranty management, repair services, and ongoing technical consultation by our team of specialist engineers in Bangkok.

Question 7

Is PrecisionTest an authorized Megger distributor in Thailand?

Accepted Answer

Yes. PrecisionTest Co., Ltd. is the authorized distributor of Megger electrical testing instruments in Thailand. We supply the full Megger product line including MIT insulation testers, DET earth testers, and MFT multifunction testers with official warranty support.

Question 8

How often should insulation resistance testing be performed?

Accepted Answer

According to IEC 60364 and NFPA 70B, insulation resistance testing should be performed at least annually for most industrial electrical installations, and every 3–6 months for critical systems such as motors, generators, and high-voltage cables. More frequent testing is recommended in harsh or humid environments.

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