Chapter 1)
7XG3124 Installation Guide
©2014 Siemens Protection Devices Limited Chapter 1 Page 6 of 20
The RA30B Dual detector version provides an additional detection window for dual zones of coverage as
depicted below :
Detection windows
The recommended spacing for the RA30B single detectors is approximately 5 - 6 m to ensure adequate
detection overlap, this combination provides an overall coverage zone of approximately 10 -12 m.
10 - 12m
6m
Figure 4: RA30B Dual Detector
Figure 5: RA30B Dual Detector Spacing