描述
由于第三种接地方式与第二种接地方式有较多相同处,过去,计算机或DCS系统曾经较多的采用过专用的接地网。但这种接地方式存在的缺点是:占地面积太大,投资高,电缆及接地网钢材耗量大,距厂房有相当的距离(因不易在厂房内找到合适的位置),管理、维护、测量及查找接地极和接地线不方便,且效果不甚良好。根据实际运行表明,设置专用的DCS接地网是既困难又不安全的。
X0020 Panoramic Corp. PC-1000 Pan X-Ray System
IDDC Model 1200 Porta Ray Portable X Ray System
L3 COMMUNICATIONS MODEL PX-M SERIES II X-RAY SYSTEM
HP 43855A X Ray System
Kodak 2100 Intraoral X-ray System
NEW Kodak 2100 DC Intraoral X-Ray System
Gendex Gx-Pan Dental Panoramic X Ray X-Ray xray System
LORAD Mammography M-IIE M-II-E X-RAY System Unit Mammo
Philips Medical Systems X-Ray Tube Housing Assembly
InnoVet Select Veterinary Radiographic X-Ray System