Measuring Category And Notes On Insulation; Control Cabinet - Phoenix Contact SCK-C-MODBUS User Manual

105608_en_00
6.2

Measuring category and notes on insulation

The SCK-C-MODBUS communication module is assigned to measuring category CAT II
according to DIN EN 61010-2-30 and must therefore not be used in other category areas.
This means that the communication module is designed for use in low-voltage data pro-
cessing. It must not be located in the immediate vicinity of equipment for power generation
or power distribution systems.
Table 6-1 Notes on insulation
Rated voltage
Surge voltage according
to IEC 61010
Pollution degree
The termination area of the devices must be inaccessible after installation to ensure suffi-
cient protection against accidental contact with live parts (e.g., installation in a distributor
box or control cabinet).
In the case of the voltage measuring module, plexiglass covers should also be used to pro-
tect against accidental contact.
6.3

Control cabinet

Snap the devices onto a 35 mm DIN rail according to DIN EN 50022 in the control cabinet.
NOTE: Degree of protection
The IP20 protection (IEC 60529/EN 60529) of the device is intended for use in a clean and
dry environment. Install the module in housing with at least IP54 protection according to
EN 60529. The stated limits concerning mechanical or thermal loads on the module must
not be exceeded.
SCK-C- SCK-M-I-8S-
MODBUS 20A
(2901674) (2903241)
SELV/PELV area
2 2
Installation
SCK-M-I-4S- SCK-M-U-
20A 1500V
(2903242) (2903591)
PV system
voltage,
max. 1500 V
6 kV
2 2
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