YD2668-4B Ground Resistance Tester is a specialized instrument used to test the ground resistance of household appliances. It has functions such as microcomputer control, full setting data power-off protection, sorting, short-circuit calibration, and open-circuit alarm. The instrument is easy to operate, aesthetically pleasing, and reliable, making it an ideal equipment for production lines and inspection departments.
The YD2668-4B ground resistance tester is designed for measuring the grounding resistance of household appliances and industrial equipment. It complies with national standard GB4706.1‑84 and offers selectable test currents up to 30 A, with resistance values displayed on a three‑digit LCD.
The manual details panel functions, step‑by‑step operation, safety precautions, and fault troubleshooting. It also lists the accessories included in the package and provides specifications such as operating temperature, humidity, power supply, and dimensions. This manual is written in Chinese.
| Ground resistance display range (SA‑10 A) | 0–0.5008 Ω |
|---|---|
| Ground resistance display range (SA‑20 A) | 0–0.3008 Ω |
| Ground resistance display range (SA‑30 A) | 0–0.2008 Ω |
| Test current (AC 50 Hz) 5 A–8 A | ±10%+3 |
| Operating temperature | 10 °C–30 °C (0 °C–40 °C possible) |
| Relative humidity | up to 85 % RH |
| Atmospheric pressure | 86 kPa–106 kPa |
| Power supply | 220 V ±10 %, 50 Hz ±5 % |
| Dimensions | 375 mm × 150 mm × 325 mm |
Press the resistance‑setting keys; the up key increases the value and the down key decreases it. The threshold cannot be changed while the instrument is in test mode.
Activate the clear (zero) function; the zero indicator light will turn on, resetting the displayed values.