General Introduction:
Supplied with the new type different frequency AC power supply,GDDW-III High Quality Earth Ground Resistance Tester/Meteradopts microprocessor to control and process signal,which solve problems of the interference between test lead wires.
GDDW-III High Quality Earth Ground Resistance Tester/Meteris used to test grounding resistance in different places such assubstation ground network(4Ω),power station,microwave
station(10Ω),lightning rod(10)and so on
Technique Index:
| Measurement range | 0~15Ω |
| Precision | 3%RDG+0.5%FS |
| Circuit resistance | <80ohm |
| Test current | AC<3A |
| Test cable | >φ1.2mm2 |
| Power supply | AC220V±10% 50Hz/60Hz |
| Environment temperature | 0-50°C |
| Humidity | ≤85%RH |
| Size | 370mm*270mm*220mm |
| Weight | 5kg |
Ⅲ. Model and Technical Parameter:
| Model | GDDW-III | GD2571-II |
| Measurement Range | 0~15Ω | 0~200Ω |
| Measurement Precious | 3%RDG+0.5%FS | 1.5%±1d |
| Test Current | AC≤3A | 10mA/1mA |
| Power Supply | AC220V±10%50/60Hz | AC220V±10%50/60Hz |
| Environment Temperature | 0~50° | 0~50° |
| Related Humidity | ≤ 85%RH | ≤ 85%RH |
| Instrument Dimension | 370x270x220mm | 200x200x110mm |
| Instrument Weight | 5kg | 2.5kg |
