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Clamp-on ground resistance meter
- Simple and fast clamp-on operation
- No auxiliary roads required
- Direct readind of ground loop resistance from 0.01 Ω to 1,200 Ω
- Direct reading of small leakage current from 1 mA
- Direct reading of neutral current up to 30 A rms
- Jaw design with large 32 mm window
- Auto-power off
- Programmable alarm for quick in-field testing
- Built-in memory for up to 99 measurements storage
Overview
Specifications
Accessories
The Ground Resistance Tester model EM-5248 measure ground rod and small grid resistance through any season, without the use of auxiliary ground rods. Clamp-on ground resistance testers are used in multigrounded systems without disconnecting the ground under test. The EM-5248 simply clamp around the ground conductor or rod and measure the resistance to ground.
By performing measurements on intact ground systems, the user also verifies the quality of the grounding connections and bonds. Resistance and continuity of grounding loops around pads and buildings may also be measured.
The EM-5248 also includes a current measurement function. The probe's high sensitivity enables measurement of leakage current flowing to ground or circulating in ground loops down to 1mA and neutral currents to 30Arms. 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 equipment offer battery life information at power-up and Auto-Off for power management. Additional features are also displayed on the large LCD to ensure precise measurements. The Buzzer and Auto-Off features may be disabled from the push-buttons at any time.
The EM-5248 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. The user may also have the Alarm initiated above or below the set point. This Alarm feature permits quick field checks where only “pass” or “fail” readings will suffice.
The Memory function logs up to 99 measurements (Ohms or Amperes). This enables the user to conduct field surveys, and to retrieve and analyze the readings at a later time. The alarm settings and stored memory information are saved when the ground tester is turned off.
By performing measurements on intact ground systems, the user also verifies the quality of the grounding connections and bonds. Resistance and continuity of grounding loops around pads and buildings may also be measured.
The EM-5248 also includes a current measurement function. The probe's high sensitivity enables measurement of leakage current flowing to ground or circulating in ground loops down to 1mA and neutral currents to 30Arms. 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 equipment offer battery life information at power-up and Auto-Off for power management. Additional features are also displayed on the large LCD to ensure precise measurements. The Buzzer and Auto-Off features may be disabled from the push-buttons at any time.
The EM-5248 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. The user may also have the Alarm initiated above or below the set point. This Alarm feature permits quick field checks where only “pass” or “fail” readings will suffice.
The Memory function logs up to 99 measurements (Ohms or Amperes). This enables the user to conduct field surveys, and to retrieve and analyze the readings at a later time. The alarm settings and stored memory information are saved when the ground tester is turned off.
Images for illustration purposes only. Megabras reserves the right to change design and specifications without prior notice. Accessories with 6 months limited warranty.
