NORD Drivesystems BU0180 - Manual (Page 44)

SK 180E Manual for frequency inverters
44 Pre-series version BU 0180 GB-0914
2.10.1 Modified frequency inverter for compliance with Category 3D
Operation of the frequency inverter in ATEX Zone 22 is only possible with appropriate modifications. This
adaptation is only made at the NORD factory. In order to use frequency inverters in ATEX Zone 22, among
other things, the diagnostic caps are replaced with aluminium / glass versions.
II 3D Ex tD A22 IP55 T125 °C X
Categorisation:
 Protection with "housing"
 Procedure “A“ Zone "22" Category 3D
 Protection class IP55 / IP66 (according to the device)
 Maximum surface temperature 125°C
 Ambient temperature -20°C to +40°C
Series SK 1x0E frequency inverters and the associated options are designed for a
degree of mechanical hazard corresponding to a impact energy of 7J.
The necessary adaptations are contained in the ATEX outdoor installation kits.
Device* Kit designation Part Number
SK 1x0E
SK 200E-ATEX-TU4 275274206
SK TU4-xxx
* One kit must be used for each device
2.10.2 Options for ATEX Zone 22 3D
In order to ensure an ATEX-compliant frequency inverter, the approval of optional modules for explosion
hazard areas must be observed. The following lists the various options with regard to their approval for use
in ATEX Zone 22 3D.