© MEDC 2002
12/03
Cable Termination
CAUTION: Before removing the cover assembly, ensure that the power to the
unit is isolated.
Unscrew the 6 off M5 cover screws (EExd version) or 2 off M5 cover screws
(EExde version) and remove cover assembly to gain access to the terminals.
EExde units only:
1. Not more than one single or multiple strand lead shall be connected into
either side of any terminal, unless multiple conductors have been joined in a
suitable manner, e.g. two conductors into a single insulated crimped boot
lace ferrule.
2. Leads connected to the terminals shall be insulated for at least 275V and this
insulation shall extend to within 1mm of the metal of the terminal throat.
3. All terminal screws, used and unused, shall be tightened down.
4. Minimum creepage and clearance distances between the terminals and
adjacent conductive parts (including cable entry devices) must be at least 5mm.
EExd & EExde units
Cable termination should be in accordance with specifications applying to the
required application. MEDC recommends that all cables and cores should be
correctly identified. Please refer to the wiring diagram provided with the product.
Ensure that only the correct listed or certified cable glands are used and that the
assembly is shrouded and correctly earthed.
All cable glands should be of an equivalent NEMA/IP rating to that of the unit
and integrated with the unit such that this rating is maintained.
The internal earth terminal, where fitted, must be used for the equipment
grounding connection and any external terminal is for a supplementary bonding
connection where local codes or authorities permit or require such a connection.
Once termination is complete, replace cover assembly. Position the 6 off M5
cover screws (EExd version) or 2 off M5 cover screws (EExde version) into the
holes in the cover and tighten evenly.
3.
OPERATION
The sounder is available in the DC voltage input version only.
The absolute input voltage range is 11.0V to 58.0V
Содержание DB3V
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