INSTRUMENTS WITH A DIGITAL SOUL

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AX-DG1015AF

Generator: function; Band: ≤15MHz; LCD TFT 3,5"; Channels: 2

AX-C708

Multimeter calibrator; V DC: 0,01m÷40m/400m/4/40/400V

AX-LCR41A

LCR meter; LCD 5 digits; 3x/s; 0,0001÷9,999MΩ; R accuracy: ±0,3%

AX-EL600W

Electronic load; LCD 4,3", with a backlit; 0÷150V; 0.001÷60A

AX-DG100-SOF

Software; Application: AX-DG105; Equipment: RS232 cable, software

AX-LCR42A

LCR meter; double LCD (19,999/1999), bargraph, with a backlit

AX-C605

Loop calibrator; V DC: 0÷28V; I DC: 0÷22mA; Current source: 0÷22mA

AX-DG1005AF

Generator: function; Band: ≤5MHz; LCD TFT 3,5"; Channels: 2

AX-C850

RTD calibrator; R range: 0,01÷400/1500/3200Ω

AX-C830

Thermocouple calibrator; V DC: -10m÷75mV; Measuring unit: °C, °F

AXIOMET Catalogue

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(ver. 6)
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What are the main causes and basic types of surges?

Surges in electrical installations are divided into two groups:

  • internal surges,
  • external surges.

This division relates to causes of these surges.

Internal surges take place inside electrical installations, e.g. as a result of switching currents, damage to electrical installation or sudden load change. They are further divided into:

  • connection surges, which take place during switching unloaded lines on and off, as well as during automatic elimination of short-circuits;
  • occasional surges, which are caused as a result of sudden load change;
  • short-circuit surges, they include short-circuits to the ground;
  • resonance surges.

The second group includes atmospheric surges caused by environmental phenomenon, mainly by atmospheric discharges. Their division depends on the distance from electrical installation. The strongest surges are caused when a lightning directly strikes electrical installation. In the second place there are surges caused when a lightning strikes in close proximity to electrical installation. Atmospheric discharges that take place between clouds are less significant; of course, the closer the distance to electrical installation, the stronger the discharge. Atmospheric discharges can also be caused by radio waves.

Division of surges can also be based on their duration: they can be pulsed or long-lasting.