Hach-Lange Power connection box for SC analyzers User Manual
Page 7
7
Electrical connections
The power connection box is available with and without a pre-assembled power cable. If
no pre-assembled power cable is provided, the power connection box can be connected
to the mains power via a fixed wire connection or a power cable with suitable strain relief.
The wire connection is established via the same connection terminals for a fixed wire
connection and a cable wire connection.
For the wire connection, proceed as follows (refer to
):
1. Make sure that the housing is well secured.
2. Remove the four screws and the socket lid (component 8).
D A N G E R
Risk of electric shock. For installation in wet areas or areas in which wetness can occur, a
residual-current circuit breaker must always be installed with this socket. For assembly in outdoor
areas, overvoltage protection is required. For fixed wire connections (cable conduit), a clearly
labeled 2-pin disconnect switch must be installed on site next to the socket, in accordance with
the applicable regulations. For the wire connection to the on-site disconnect switch, disconnect
the power supply to the socket.
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 using a mains connection cable that is permanently connected to
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 hazards. Use only the supplied power cable.
Only qualified experts may perform the tasks described in this section of the manual, while
adhering to all locally valid 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 storage 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 of the main
power line via a cable with plug instead of fixed-installation wire connections, the plug and socket
are considerably more susceptible to the penetration of moisture and dust.
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).