Insulation Resistance is a measurement of the quality of insulating materials, either as “raw materials” or as part of a final component or assembly.Insulation Resistance is a measurement of the quality of insulating materials, either as “raw materials” or as part of a final component or assembly.

Useful for monitoring the effects upon insulating materials due to short term phenomena such as voltage stress testing and long term phenomena as aging, weathering, immersion etc.

AC voltage cannot charge a capacitive load, reactive current flows instantly and remains consistent regardless of the time the voltage is applied.

DC voltage will charge the capacitance of the DUT so you may see an inrush of current upon initial application of the voltage, but gradually the readings will dissipate as the DUT becomes charged.

Normally, the relationship between AC and DC Hi-pot test is AC=1.414 DC. For example, if perform AC Hipot test by 2kV, then DC Hipot test should perform 2.83kV

Product Informatioon: Safety Testers 

#Safety Testers #Hipot Testers

Test specifications can call for AC or DC testing or both, depending on the specific product type. AC is often specified more than DC and can be more stressful. For example, power line consumer products are much more likely to experience AC voltage transients than DC transients. The bottom line is that a product should be tested for the voltage it is most likely to experience.

The best way to determine applied voltage is to check the standard you are going to comply with for your product.

An informal suggestion, typically, is twice operating voltage plus 1000V.  For example, if a DUT operating voltage is 120 volts AC, and then the suggested applied voltage would be the 1,240 volts (2 x 120 + 1000) for the DUT.

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#Safety Testers #Hipot Testers

The test capacity of a Hipot test is the AC power output of the instrument and is determined by multiplying the maximum AC output voltage by the maximum AC current. For example,

• GPI-745A : 5000V x 40mA(0.04A) = 200VA
• GPT-815 : 5000V x 100mA(0.1A) = 500VA

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#Safety Testers #Hipot Testers

A hipot tester, also known as a high-potential or high-voltage tester, is a specialized electrical testing instrument that is used to test the electrical insulation of wires, cables, and other electrical equipment.

The hipot tester works by applying a high voltage, typically several thousand volts, to the device being tested to check for any insulation failures or "weak spots" that could cause electrical hazards, such as electric shocks, fires, or equipment damage. The tester measures the current that flows through the insulation and compares it to a set threshold. If the current exceeds the threshold, it indicates that there is an insulation breakdown, and the device being tested has failed the hipot test.

Hipot testing is typically performed on newly manufactured electrical equipment or devices, as well as on equipment that has undergone repairs or maintenance to ensure that the electrical insulation is still intact and functioning properly. The test is important to ensure the safety of people working with or near the equipment and to prevent electrical hazards.

Product Informatioon: Safety Testers 

#Safety Testers #Hipot Testers

Yes, you need to use the Null Modem cable which the transmit (TxD) and receive (RxD) lines are cross-linked.

The GPM-8212 accepts only CR (Carriage Return) which is hexadecimal 0D as the message terminator whilst giving a command.

The different between GOM-801H and GOM-801G are:

The sample rate is AD sampling per second / maximum frequency = 5kHz / 400Hz = 12.5 times/second

For an effective measurement, the minimum input is 2% of full range for all ranges of GPM-8212. Therefore, the minimum input is,

The GPM-8212 resolution as below: