Voltage Detecting Systems - Siemens NXPLUS C Installation And Operating Instructions Manual

LRM plug-in sockets
Features of LRM
plug-in sockets
802-9074.9 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C Wind • Revision 05
8.12

Voltage detecting systems

For voltage detection according to IEC 61243-5 and VDE 0682 Part 415 with the following
voltage detecting systems:
• LRM plug-in sockets
• VOIS+, VOIS R+ (option)
• CAPDIS -S1/-S2+ (option)
• WEGA 1.2/2.2 (option)
Fig. 12: Voltage detecting system via capacitive voltage divider
(principle)
• -C1: Capacitance integrated into bushing
• -C2: Capacitance of the connection leads and the voltage indicator to earth
• U =U / √ 3 during rated operation in the three-phase system
LE N
• U =U =Voltage at the capacitive interface of the switchgear or at the voltage indicator
2 A
Fig. 13: LRM plug-in sockets
• Verification of safe isolation from supply phase by phase through insertion of the voltage
indicator in the corresponding plug-in sockets
• Voltage indicator suitable for continuous operation
• Safe-to-touch
• Routine-tested
• Measuring system and voltage indicator can be tested
• Voltage indicator flashes if high voltage is present
• Fixed-mounted capacitive voltage dividers in the bushings
Description
VOIS, WEGA,
CAPDIS-S1+/S2+
fixed-mounted
LRM indicator plugged in
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