Siemens 8DJH Series - Short-circuit;earth-fault indicators

500-8067.9 * INSTALLATION AND OPERATING INSTRUCTIONS 8DJH * Revision 03 37
Description
7.11 Short-circuit/earth-fault indicators
All ring-main feeders can be optionally equipped with a 3-phase short-circuit or
earth-fault indicator.
Features • Indication at the switchgear front
• Factory-assembled including sensor mounted on ring-main cable bushing
• Short-circuit pickup values: See table
• Reset manually or automatically after a preset time, depending on the type
• Optical signals when a pre-selected pickup value is exceeded
• Option: Remote electrical indication via passing contact (changeover contact) or
via maintained contact (D) connected to terminals (rear side of device).
Selection of short-circuit/earth-fault indicators
Make Horstmann
1)
Fig. 28: Short-circuit indicator ALPHA E
1)
Fig. 29: Short-circuit indicator SIGMA
1)
Fig. 30: Short-circuit indicator IKI-20