Shielding Rtd/Ma Instrument Cables - ABB RELION 620 Series Installation Manual

1MRS757641 G
Figure 42: Example of RTD0003 card variant, (6 RTD + 2 mA)
5.4.4

Shielding RTD/mA instrument cables

The RTD/mA inputs are connected by screened cables (1 mm
example, Unitronic 300S (formerly Unitronic 300CY), manufactured by LAPP Group.
1.
620 series
Installation Manual
RTD0003
Other manufacturers' cables with similar technical features can also be
used. When selecting a suitable sensor cable, observe also other possible
customer installation requirements.
Prepare screened cable with a drain wire.
a) Select a drain wire (0.75 mm
The wire combination green/yellow should not be used as the
drain wire has no protective function.
b) Install the drain wire.
The wire can be installed, for example, with a Shield-Kon one-
piece connector (Thomas & Betts). For detailed instructions, see the
manufacturer's manual.
c) Protect the cable end with a heat shrinkable cap.
2
) as short as possible.
Connecting
2
/AWG18), for
53