R&S ENV4200
Preparing for Use
User Manual 1107.2470.12 - 03
E-15
4.4 AC Supply
Electric shock due to incorrect power supply.
Due to the design, V-networks do not have standards-compliant insulation, do not have
a fuse in the measuring circuit and exhibit high leakage currents. In order to protect the
user from contact with electrically live instrument parts, the power supply connection of
this V-network must be made by experienced electrically skilled personnel. The
applicable national regulations and standards must be observed as part of the
installation process.
The supply voltage is connected to the back side of the MC high current connections
(L1, L2, L3, N). Suitable MC cable sockets for establishing connecting cables are
included in the equipment supplied.
The MC cable socket with the identification color blue and label N (neutral conductor)
is intended for connection to the MC high current connection with the 'N' identifier, see
. The MC cable socket with the identification color black and the labels L1, L2
and L3 ('phase' or 'line') are intended for connection to the MC high current
connections with the L1, L2 and L3 labels.
Fig. 4
MC cable socket with the identification color blue and 'N' identifier (neutral conductor)
In line with the insulation requirements stipulated in the standard CISPR 16-1-2
(EN 55016-1-2), each phase of the V-network is connected to housing ground via 8 µF.
This is why the V-network may not be operated with a residual current device
connected ahead of it. Additional measures must be taken to protect the user against
direct or indirect contact.
