The integrated voltage detecting system LLI conforms with the requirements for voltage detection systems ofthe valid VDE 0682 Section 415 (IEC 61243-5). It is a 3 Phase system with which the following conditions of a medium voltage network are indicated:
- Voltage not present : No indication
- Voltage Present 1 Arrow shown for each phase with L1, L2, L3 description
Design: The integrated voltage detecting system LLI is located in a panel mounted housing, The display is designed as an LCD in the front, the symbol arrow, corresponding to voltage presence is shown in black. arranged on the front panel are also a LRM test point for connecting a phase comperator for LRM ~ interfaces. As protection against corrosion, the test point is provided with a captive plug. The unit works without external power, the display T LLl gets energised from the measuring signal.