Lenze E94MHE Serie Instructions De Montage page 177

3.4 Informazioni sulla sicurezza per l'installazione secondo UL/CSA
Originale − Inglese
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Warnings!
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EDK94MH594 DE/EN/FR/ES/IT 3.0
Informazioni sulla sicurezza per l'installazione secondo UL/CSA
Branch circuit protection:
– Suitable for use on a circuit capable of delivering not more than
100 000 rms symmetrical amperes, 480 V max., when supplied by a
rectified AC−supply as an UL listed Lenze unit, cat. no. E94A
– Suitable for motor group installation on a circuit capable of delivering not
more than 100 000 rms amperes, when supplied by a rectified AC−power
supply of 480 V maximum, when protected by specified fuses.
– Suitable for motor group installation on a circuit capable of delivering not
more than 50 000 rms amperes (30 000 rms Amperes with fuse type
202922...), when supplied by a rectified AC−power supply of 480/277 V
maximum, when protected by specified fuses.
– Use specified fuses as shown in the table.
– Above Short Circuit ratings are only valid when the assembly bases are
used.
– Integral solid state short circuit protection does not provide branch circuit
protection. Branch circuit protection must be provided in accordance with
the National Electrical Code / Canadian Electrical Code and any additional
local codes.
The opening of the branch circuit protective device may be an indication
that a fault current has been interrupted. To reduce the risk of fire or
electrical shock, current−carrying parts and other components of the
controller should be examined and replaced if damaged. If burnout of the
current element of an overload relay occurs, the complete overload relay
must be replaced.
For information on the protection level of the internal overload protection
for a motor load in percent of FLA, see the corresponding Application
Manuals or Software Helps.
For information on rating and proper connection of the thermal protector
(only for connection to motors having integral thermal protection), see the
corresponding Application Manuals or Software Helps.
Max. surrounding air temperature is 45 °C.
Max. surrounding air temperature with derating is 55 °C.
Use 60/75 °C copper wire only, except for control circuits.
Secondary circuit shall supplied from an external isolating source.
These products are intended for use in a pollution degree 2 environment.
These products are intended for use in overvoltage category III.
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Informazioni sulla sicurezza 3
177