Reed R5710 Ground Resistance Tester
REED R5710 clamp-on earth ground resistance tester: 0.010 to 1200Ω (0.001Ω resolution), leakage current to 20A, 32mm jaw for large ground rods, data memory.
Pick your exact configuration in the ordering table below to add it to your cart.
Same-day response on quotes. ISO/IEC 17025 accredited calibration available.
Overview
The REED R5710 is a clamp-on ground resistance tester (earth ground resistance tester) from REED Instruments. It clamps around the ground rod and measures ground resistance from 0.010 to 1200Ω, with 0.001Ω resolution at the low end, plus leakage current up to 20A. Ranging is automatic.
Features (REED datasheet)
- Auto-ranging ground resistance and leakage current measurements.
- 0.001Ω resolution for low resistance measurements.
- 9999-count EBTN display.
- Internal memory stores up to 300 readings.
- User adjustable alarms.
- Data hold function.
- Durable double molded conductor clamp.
- 1.26" (32mm) jaw size for large ground rods.
- Low battery indicator and auto shut off.
- Cat. III 300V safety rating.
- Includes resistance calibration loop (1Ω and 10Ω), batteries and hard carrying case.
Frequently asked questions
What does the R5710 ground resistance tester measure?
Ground resistance from 0.010 to 1200Ω and leakage current from 0 to 20A, both auto-ranging, with Ω and A shown on the 9,999-count display. Ground resistance accuracy is ±(1% + 0.01Ω) up to 0.99Ω and ±(1% + 0.1Ω) from 1.0 to 49.9Ω (full table under Specifications).
What size ground rod fits the clamp?
The jaw opens to 1.26" (32mm), which REED sizes for large ground rods.
Can the earth ground tester store readings?
Yes. Internal memory stores up to 300 readings, and the meter has data hold and user-adjustable alarms.
What comes with the R5710?
A resistance calibration loop (1Ω and 10Ω), batteries and a hard carrying case.
What is its safety rating?
CAT. III 300V.
Specifications
| Accuracy | |
| Ground Resistance Accuracy | 0.010 to 0.099Ω: ±(1% + 0.01Ω) 0.10 to 0.99Ω: ±(1% + 0.01Ω) 1.0 to 49.9Ω: ±(1% + 0.1Ω) 50.0 to 99.5Ω: ±(1.5% + 0.5Ω) 100 to 199Ω: ±(2% + 1Ω) 200 to 395Ω: ±(5% + 5Ω) 400 to 590Ω: ±(10% + 10Ω) 600 to 880: ±(20% + 20Ω) 900 to 1200Ω: ±(25% + 30Ω |
| Ranges | |
| Ground Resistance Range | 0.010 to 0.099Ω 0.10 to 0.99Ω 1.0 to 49.9Ω 50.0 to 99.5Ω 100 to 199Ω 200 to 395Ω 400 to 590Ω 600 to 880Ω 900 to 1200Ω |
| Ground Resistance Resolution | 0.001Ω, 0.01Ω, 0.1Ω, 0.5Ω, 1Ω, 5Ω, 10Ω, 20Ω, 30Ω |
| Leakage Current Range | 0 to 20A (0 to 9mA, 10 to 99mA, 100 to 299mA, 0.30 to 2.99A, 3 to 9.9A, 10 to 20A) |
| General | |
| Range Selection | Auto-ranging |
| Sampling Time | 0.5 seconds |
| Display | 9,999 count EBTN display, backlit |
| Internal Memory | Up to 300 data points |
| Alarms / Display Hold | User selectable alarms; display hold |
| Jaw Opening | 1.26" (32mm) |
| Overvoltage Category | CAT. III 300V |
| Power | |
| Power Supply | 4 x AA batteries; auto shut-off after 5 minutes |
| General | |
| Product Certifications | CE, RoHS |
| Environmental | |
| Operating Temperature | 32 to 131°F (0 to 55°C) |
| Operating Humidity | 10 to 90% |
| Storage Temperature | -4 to 140°F (-20 to 60°C) |
| General | |
| Dimensions | 11.2 x 3.3 x 2.2" (285 x 85 x 56mm) |
| Weight | 2.6lbs (1180g) |
Documents
Ordering information
1 ordering models available.
| Model | Description | List Price | |
|---|---|---|---|
| R5710-NIST | GROUND RESISTANCE TESTER, CLAMP-ON W/NIST CERT | $1,510.00 |
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