Clamp-On Ground Resistance Meter (Megabras Brand Only)

Clamp-On Ground Resistance Meter (Megabras Brand Only)

$2,814.86

Clamp-On Ground Resistance Meter (Megabras Brand Only)

MANUFACTURER: TENTECH/MEGABRAS

MANUFACTURER NO: EM-5254

SKU: AME-112216-44

Description

Clamp-On Ground Resistance Meter (Megabras Brand Only)

Description

The Ground Resistance Tester model EM-5254 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-5254 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-5254 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 1 mA and neutral currents to 40 A. 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-5254 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 2000 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.

Clamp ground resistance meter

Technical specifications

Ground Resistance Range Resolution Accuracy (% of reading)
Auto-Ranging 1 Ω to 199 Ω 0.010 a 0.099 Ω 0.001 Ω ± 1.5% ± 0.01 Ω
0.10 a 0.99 Ω 0.01 Ω ± 1.5% ± 0.01 Ω
1.0 a 49.9 Ω 0.1 Ω ± 1.5% ± 0.1 Ω
50.0 a 99.5 Ω 0.5 Ω ± 2.0% ± 0.5 Ω
100 a 199 Ω 1 Ω ± 3.0% ± 1 Ω
200 a 395 Ω 5 Ω ± 5.0% ± 5 Ω
400 a 590 Ω 10 Ω ± 10% ± 10 Ω
600 a 1150 Ω 50 Ω Approx. 20%
1200 a 1500 Ω 50 Ω Approx. 25%
Ground or Leakage Current Range Resolution Accuracy (% of reading)
Auto-Ranging 1 mA to 40  A
0.200 a 0.999 mA 1 μA ± 2% ± 50μA
1.000 a 2.999 mA
3.00 a 9.99 mA
10 μA ± 2% ± 50 μA
10.00 a 29.90 mA
30.0 a 99.9 mA
100 μA ± 2% ± 100 μA
100.0 a 299.0 mA
0.300 a 0.990 A
1 mA ± 2% ± 1 mA
1.000 a 2.990 A
3.00 a 39.99 A
10 mA ± 2% ± 10 mA

Resistance measurement frequency

2083 Hz.

Current measurement frequency

47 to 800 Hz.

Loop impedance measurement

10 to 100 μH; 100 to 500 μH.

Current overload

OL displayed above 39.99 Arms.

Case material

Lexan®.

Jaw cover material

Lexan®.

Jaw

Opening: 35 mm.

Operating temperature

-4 to 131 °F (-20 °C to 55 °C).

Operating humidity

10 to 90% RH.

Power supply

4x 1.5 V LR6 (AA) alkaline batteries or 4 NiMH batteries. Battery Life: Typical: 12 hours, or 1440 30-second measurements approx.

Interface

Bluetooth®.

Safety

Designed to EN 61010-1, 600V CAT IV safety standards.

Environmental

IP40, group III equipment.

Drop test

IEC 61010-1.

Max overloads

Permanent current 100 A (50/60 Hz).
Transient current (< 5 s) 200 A (50/60 Hz).

Electromagnetic compatibility

Compliant with standard IEC 61326-1.

Dimensions

2.16 x 3.74 x 10.31″ (55 x 95 x 262 mm).

Weight

2.06 lbs (935 g) Approx.

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