JD03 earthing device is applied to all kinds of electric locomotives, it is one of protection grounding device. The function is to contact current from static car body to rotated axle to avoid passing from bearing.
| Technical data: | |
| Name:JKG2 Air Dryer | Model:JKG2 |
| Rated current: | 600A |
| Static contact resistance between carbon brush and contactor plate: | ＜0.05Ω |
| The number of carbon brush: | 3 groups |
| Size specification of carbon brush cross section: | 20mmX40mm |
| Effective wearing length of carbon brush: | 25mm |
| Working pressure of each spring: | 27±2N |
| Frequency of spring under interchange load: | ≥105 |
