BEKA BA377NE, Руководство пользователя

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Appendix 3 ETL & cETL certification for
installations in USA and Canada
A3.0 cETL Mark
For installations in the USA and Canada, the
BA377NE Timer or Clock has ETL and cETL Ex nA
and Ex tc approval, Control Number 4008610.
Copies of the Authorisation to Mark are available
from the BEKA associates sales office and
www.beka.co.uk
A3.1 ETL and cETL certification
The US and Canadian standards used for
assessment and certification of the BA377NE are
listed on the cETL Authorisation to Mark.
Installations must comply with BEKA associates
Control Drawing CI330-53, which is attached to this
appendix.
The ETL safety parameters are the same as the
ATEX and IECEx parameters, the systems shown in
sections 2, 3 & 4 of this manual may therefore also
be used for US and Canadian installations subject to
compliance with the local codes of practice.
ETL and cETL codes
CL I Zone 2 AEx nA ic IIC T5 Gc (US gas, Zone cert)
Zone 22 AEx ic tc IIIC T80ºC Dc (US dust, Zone cert)
Ex nA ic IIC T5 Gc (Canadian gas, Zone cert)
Ex ic tc IIIC T80ºC Dc (Canadian dust, Zone cert)
-40ºC

Ta

60ºC
The Timer or Clock's front panel push button
contacts are non incendive and have been certified
intrinsically safe Ex ic, without the need for an
external Zener barrier or galvanic isolator, as shown
on the ETL Authorisation to Mark. This allows the
Timer or Clock to be adjusted and configured live
when installed in a Ex n panel enclosure located in
Zone 2.