NORD Drivesystems BU0200 - Manual (Page 61)

SK 200E Manual for frequency inverters
60 Subject to technical alterations BU 0200 GB-4411
2.10.1 Modified SK 2xxE for compliance with Category 3D
For the operation of an SK 2xxE in ATEX Zone 22 only a modified frequency inverter is permissible. 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 2xxE frequency inverters and the associated options are only designed for a
degree of mechanical hazard corresponding to a low impact energy of 4J.
The frequency inverter must not be exposed to direct sunlight.
The necessary adaptations are contained in the ATEX outdoor installation kits.
2.10.2 Options for ATEX Zone 22 3D
In order to ensure an ATEX-compliant NORDAC SK 2xxE 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.
2.10.2.1 Technology Units for ATEX Zone 22 3D
Name Part Number
Approved for
ATEX Zone 22 3D Not approved for
ATEX Zone 22 3D
SK TI4-TU-BUS(-C) 275280000 / (275280500) x
SK TI4-TU-NET(-C) 275280100 / (275280600) x
SK TU4-PBR(-C) 275281100 / (275281150) x
SK TU4-CAO(-C) 275281101 / (275281151) x
SK TU4-DEV(-C) 275281102 / (275281152) x
SK TU4-IOE(-C) 275281106 / (275281156) x
SK TU4-24V-123-B(-C)* 275281108 / (275281158) x
SK TU4-24V-140-B(-C)* 275281109 / (275281159) x
Device Kit designation Part Number
SK 2xxE Size I … III SK 200E-ATEX Size I 275274200
SK TU4-xxx SK 200E-ATEX-TU4 275274206