Figure 4: Ra30B Dual Detector; Figure 5: Ra30B Dual Detector Spacing - Siemens 7XG3124 ReyArc24 Technical Manual

Chapter 1) 7XG3124 Installation Guide
The RA30B Dual detector version provides an additional detection window for dual zones of coverage as
depicted below :
6m
Detection windows

Figure 4: RA30B Dual Detector

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

Figure 5: RA30B Dual Detector Spacing

©2014 Siemens Protection Devices Limited Chapter 1 Page 6 of 20