Hach-Lange EVITA OXY Basic User Manual - Manual (Page 92)

English 92
Electrical installation
Important: The following safety notes apply both for USC 5000 and
for USC 7000.
D A N G E R
With fixed wiring a disconnecting device (local interruption) must be integrated
into the supply line. The disconnecting device must meet the applicable standards
and regulations. It must be installed near the device, be able to be reached easily
by the operator and labeled as a disconnecting device.
If the connection is established via a mains connection cable permanently
connected with the power supply, the plug of the mains connection cable can
serve as local interruption.
WA R N I N G
Electrical dangers and fire hazard. Use only the supplied power cable
Only qualified experts may perform the tasks described in this section of the
manual, in compliance with all locally applicable safety regulations.
N O T I C E
Use only earthed sockets for the connection of this device to the power supply.
If you are not sure if the sockets are earthed, have this checked by a qualified
electrician.
The power plug serves in addition to the power supply to isolate the device quickly
from the mains where necessary.
This is recommended for long-term disuse and can prevent potential dangers in
the event of a fault.
Therefore make sure that the sockets to which the device is connected are easy
to reach by each user at all times.
D A N G E R
The products of the manufacturer for use outdoors have a comprehensive
protection against the penetration of moisture and dust. If these products are
connected to a mains socket through a cable with plug instead of fixed-installation
wiring, the susceptibility of plug and socket against the penetration of moisture
and dust is considerably higher. It lies in the responsibility of the operator to
protect plug and socket in a way that the connection has an adequate protection
against the penetration of moisture and dust and fulfils the local safety conditions.
When the device is used outdoors, it should be connected only via a suitable
socket that has at least protection rating IP44 (protection against spray water from
all directions).
The terminals for the HART ® communication (84/85) and for the
digital inputs (77/78) of the USC signal converter must not be
connected to an external power source with more than 30 V direct
voltage.
The relay terminals (40 to 49) of the USC signal converter must not
be connected to an external power source with more than 48 V
direct voltage, 30 V effective voltage or 42 V peak voltage.
Protective conductor terminal; required cable at least AWG16 or
1.5 mm
2 Cu.
The cabling in the installation of the USC signal converter on site
must proceed in accordance with the conditions of the NEC.