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- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GDCR2000 Series is a breakthrough in traditional grounding resistance measurement technology, designed for fast, safe, and accurate testing of grounding systems in power, telecom, meteorology, oilfield, building, and industrial sites. It adopts clamp-on induction principle, requiring no disconnection of grounding down-leads and no auxiliary electrodes, enabling live-line testing without power outage.
The series includes standard (GDCR2000), explosion-proof (GDCR2000B, Exia II BT3), and multi-function (GDCR2000G+) models, covering 0.01Ω–1200Ω resistance range with 0.001Ω ultra-high resolution. It also measures grounding leakage current (0–20A) and loop resistance, detecting hidden faults that traditional methods cannot identify. Equipped with a 4-digit LCD, 99-group data storage, acoustic-optic alarm, and 6VDC battery power, it is lightweight, portable, and suitable for harsh field environments.
Specifications
| Parameter | Specification |
| Resistance Range | 0.010Ω–1200Ω |
| Resolution | 0.001Ω (0.010–0.099Ω)；0.01Ω (0.10–0.99Ω)；0.1Ω (1.0–49.9Ω) |
| Accuracy | ±(1%+0.01Ω) (0.01–0.99Ω)；±(1.5%+0.5Ω) (50–99.5Ω)；±(25%+30Ω) (600–1200Ω) |
| Current Measurement | 0.00mA–20A；Resolution: 0.05mA |
| Display | 4-digit LCD (47×28.5mm) |
| Data Storage | 99 groups；auto time-stamp |
| Alarm | Acoustic-optic；1–199Ω threshold adjustable |
| Clamp Jaw Opening | 32mm (round) / 35mm (long) |
| Power Supply | 6VDC (4×AA alkaline batteries) |
| Operating Temperature | 20°C ~ +55°C；Humidity 10%–90%RH |
| Explosion-Proof Grade | GDCR2000B: Exia II BT3 Ga |
| Dimensions (mm) | 285×85×56 |
| Weight | 1.16kg (with batteries) |
| Compliance | DL/T 475, GB/T 17949.1, IEC 610101 CAT IV 600V |
Applications
Core Test Objects
· Power systems: 10kV–500kV substation grounding grids, transmission tower down-leads
· Telecom: base station, communication tower, equipment room grounding
· Oil & gas: oilfield, gas station, refinery explosion-proof grounding
· Building: high-rise, factory, lightning protection grounding
· Industrial: petrochemical, metallurgy, data center equipment grounding
Typical Usage Scenarios
· Routine maintenance: fast periodic testing of multiple grounding points
· Live-line inspection: energized substation/tower testing without shutdown
· Fault diagnosis: hidden corrosion, breakage, or high-resistance connections
· Explosive environments: oilfield/gas station grounding (GDCR2000B)
· Compliance check: meets DL/T 475 & power industry safety standards
Advantages
No Disconnection + No Auxiliary Electrode
Save 90% time vs traditional methods;test live systems → improve efficiency & safety
0.001Ω Resolution + 1200Ω Range
Covers low to high resistance;accurate for critical grounding points → ensure system safety
3-in-1 Test (Resistance + Loop + Leakage)
One instrument for multiple jobs;detect hidden leakage faults → reduce equipment investment
Explosion-Proof Optional (Exia II BT3)
Safe for oil/gas/chemical hazardous areas → widen application scenarios
Lightweight + Portable + Long Battery
Easy one-hand operation;field-ready;low maintenance cost → ideal for field engineers
FAQ
Q: Do I need to disconnect the grounding down-lead before testing?
A: No. The clamp-on design works on connected systems;no disconnection needed.
Q: Can it test grounding in explosive areas like gas stations?
A: Yes. Choose GDCR2000B (Exia II BT3) for hazardous locations.
Q: What’s the maximum resistance it can measure?
A: 1200Ω;covers most grounding system requirements.
Q: Does it measure leakage current?
A: Yes. 0–20A range;monitors hidden leakage faults.
Q: What’s included in the standard package?
A: Main unit, test loop, carrying case, batteries, user manual, calibration certificate.
