Voltage Detection Systems (VDS)

CAUTION
hazard of incorrect operation All three phases L1, L2 and L3 to be checked. Failure to follow these instructions can result in injury or equipment damage.

Pluggable Voltage Detection System

The operating voltage or the zero voltage state of the feeders is detected via a separate voltage detection system according to IEC 61243-5.

Socket-contacts for the indicator units are located on the panel front (Figure 18). Capacitive voltage indicators of all the approved manufacturers can be used (Figure 17).

NOTE: All three phases L1, L2 and L3 to be checked.

Close non-used socket-contacts using caps.


Figure 17 Voltage indicator (Type HR-ST, Horst-mann GmbH)	Figure 18 Socket-contacts for HR system on the panel front

Integrated Voltage Detection System IVIS

IVIS (Figure 19) is an integrated voltage detection system with display unit used to determine zero voltage according to IEC 61243-5.

Figure 19
Integrated Voltage Detection System IVIS

The IVIS system has been designed for maximum operating reliability. It does not require supply from an external source. It features climateproof encapsulated electronics and is maintenance-free, due to permanent monitoring of the indication thresholds.

Flash arrow symbols on the indicators display the operating voltage still existing within the defined response thresholds (Figure 19). The IVIS system does not require the electrical repeat tests common for voltage detection systems.

For a description of all functions and messages of the IVIS system, refer to the separate Operating Manual IVIS ( AGS 531757-01).