Description
34/214 Revision 06 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DB10 • 864-5091.9
15 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)
• -C1: Capacitance integrated into bushing
• -C2: Capacitance of the connection leads and the voltage indicator to earth
•U
LE
=U
N
/√3 during rated operation in the three-phase system
•U
2
=U
A
=Voltage at the capacitive interface of the switchgear or at the voltage indicator
LRM system
Fig. 17: Verification of safe isolation from supply (LRM system)
Features of
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
The marking for documentation of the repeat test of the interface condition is located next to
the LRM plug-in sockets:
Fig. 18: Documentation to repeat test of interface condition
Fig. 16: Voltage detecting system via
capacitive voltage divider (principle)
①
VOIS, WEGA, CAPDIS-S1+/S2+
fixed-mounted
②
LRM indicator plugged in
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