A calibration by Custom-Cal is performed by engineers with extensive OEM experience. We have the expertise and the necessary standards to perform the AEMC 3730 Calibration, onsite calibration may be available. We specialize in quick turnaround times and we can handle expedited deliveries upon request.


   AEMC 3730 (1221.02)   Description / Specification:   Spec Sheet 
AEMC 3730 Clamp-On Ground Resistance Tester

The AEMC 3730 Ground Resistance Tester simply clamps around the ground conductor or rod and measure the resistance to ground. The probe’s high sensitivity enables measurement of leakage current flowing to ground or circulating in ground loops down to 1 mA and neutral currents to 30 Arms. This feature provides additional information which is becoming vital as distribution ground networks carry higher levels of noise and harmonics which affect power quality. The Model 3730 offers an alarm function and a memory (logging) function. In the alarm mode, the probe will audibly and visually indicate if the reading is beyond an input set point. Specifications. Ground Resistance Measurement Range: Autoranging 1.0 to 1200 ohm. Ground Resistance Resolution: 0.1 ohm (1.0 to 50.0 ohm), 0.5 ohm (50.0 to 100.0 ohm), 1 ohm (100 to 200 ohm), 5 ohm (200 to 400 ohm), 10 ohm (400 to 600 ohm), 50 ohm (600 to 1200 ohm). Ground Resistance Accuracy: ± (1.5% + 0.1 ohm) (1.0 to 50.0 ohm), ± (2.0% + 0.5 ohm) (50.0 to 100.0 ohm), ± (3.0% + 1 ohm) (100 to 200 ohm), ± (6.0% + 5 ohm)(200 to 400 ohm), ± (10% + 10 ohm) (400 to 600 ohm). Resistance Measurement Frequency: 1.689 kHz. Ground or Leakage Current: Autoranging 1 mA to 30.00 Arms. Current Measurement Frequency: 47 to 800 Hz. Current Overload: OL displayed above 30 Arms.


Standard Calibration $225.00 *
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*This is a Web introductory price for one calibration of the AEMC 3730. Price does not in most cases include measurement performance data. Pricing does include NIST traceable calibration and issue of a calibration certificate and calibration label. Pricing may vary slightly due to volume and location of laboratory supporting calibration. Volume pricing may apply. On-site fees may apply depending on logistics, location and volume of work to be completed during the visit.

Related Bench Equipment Terms and Definitions. For a complete list go to our  Terms and Definitions Page.

Bandwidth is the difference between the upper and lower frequencies in a contiguous set of frequencies within which a component, link or network will operate.

Frequency Span
Frequency Span specifies the range between the start and stop frequencies, also referred to as bandwidth

Noise Figure
Noise Figure the ratio of the signal-to-noise power ratio at the input to the signal-to-noise power ratio at the output.

Ringing is an unwanted oscillation of a voltage or current.

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