ATO 600 - Measures EHV circuit-breaker contact resistance, bushing contact joints, or any low-resistance conductor path that requires testing.

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ATO-600 Micro-Ohmmeter

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The ATO-600 micro-ohm meter measures EHV circuit-breaker contact resistance, bushing contact joints, or any low-resistance conductor path that requires testing. This microprocessor controlled micro-ohm meter can accurately measure low resistances ranging from 1 micro-ohm to 300 milliohms at any test current from 10A to 600A (see note 1). The digital readout displays directly in micro-ohms or milliohms. No calculation is required to compensate for lead resistances when using the ATO-600 meter. A custom switching power supply keeps the ATO-600 weight at 40 lbs (18.1 kg) make it ideal for field use.

Features

	10 to 600 Amperes unfiltered direct current
	Digital Resistance Reading from 1 micro-ohm to 300 milli-ohms
	Microprocessor based
	No adjustment is required
	Store 4,000 readings
	Computer interface via RS-232C or USB port