Power Testing Instruments
BY2571 Digital Ground Resistance Tester
Digital earth resistance meter using DC/AC conversion technology, measuring ground resistance, low-resistance conductor resistance, soil resistivity and earth voltage, for power, telecom, railway, communication and mining applications.

Overview
Digital earth resistance meter using DC/AC conversion technology, measuring ground resistance, low-resistance conductor resistance, soil resistivity and earth voltage, for power, telecom, railway, communication and mining applications.
Standards & Compliance
Benchmark standards for this equipment category
Systems in this category are commonly specified against these standards, linked to the issuing body. Final configuration and acceptance criteria follow the standard and edition you nominate.
- IEC 60060-1 — High-voltage test techniques
- IEEE 43 — Insulation resistance testing
- IEEE 81 — Grounding resistance measurement
- DL/T 845 — Loop resistance testing
- DL/T 911 — Winding deformation (FRA) test
- JJG 169 — Chinese metrology verification regulation
Application Scenarios
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Get a QuoteDetailed Description
Overview: the BY2571 digital earth resistance meter replaces the manual hand-cranked generator with advanced medium/large-scale integrated circuits and DC/AC conversion technology, merging three-terminal and four-terminal measurement into a single instrument.
Working principle: an internal DC/AC converter turns DC into a low-frequency constant current that flows through the auxiliary earth electrode (C) and the test object (E). The AC voltage drop across the test object is fed through the auxiliary electrode (P) to an AC amplifier, then detected and displayed. A multiplier switch gives three ranges: 0-2Ω, 0-20Ω and 0-200Ω.
Features: a high-strength aluminium alloy case, a phase-locked-loop synchronous detection method with switched-capacitor filtering for power-frequency and RF interference rejection, and a 3-1/2 digit LCD. The instrument measures earth resistance, low-resistance conductor resistance, soil resistivity and AC earth voltage.
Technical Specifications
| Resistance ranges | 0-2Ω (10mA), 2-20Ω (10mA), 20-200Ω (1mA) |
|---|---|
| Voltage range | AC 0-20V |
| Accuracy (0-0.2Ω) | ≤±3%±1 digit |
| Accuracy (0.2-200Ω) | ≤±1.5%±1 digit |
| Accuracy (1-20V) | ≤±3%±1 digit |
| Resolution | 0.001Ω, 0.01Ω, 0.1Ω, 0.01V |
| Auxiliary earth resistance (RC) | <1.8kΩ |
| Auxiliary earth resistance (RP) | <40kΩ |
| Allowable earth voltage | ≤5V (power-frequency RMS) |
| Power supply | 6.8V-9V (6x AA NiCd rechargeable), 220V AC charging |
| Dimensions | 220mm x 200mm x 105mm |
| Weight | ≤1.4kg |
Frequently Asked Questions
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Reviewed by the Application Engineering Team at Nanjing Gaodian Electric Power Equipment
Specifications are taken from the manufacturer’s technical documentation. Final configuration and acceptance criteria follow the standard and edition you nominate — tell us your test list and we will confirm the ratings.
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