2) Safety rules
n
Maintenance of this equipment must be carried out by qualified
personnel.
n
If the SIGMA is connected to the 230 V mains power supply, its
installation must comply with the European standard IEC 364 (NFC
15.100 for France).
PROTECTIONS :
n
110-230V version: the mains supply for this device must include a neutral
phase circuit breaker of maximum 6 A C curve, rapidly accessible
upstream from the supply.
n
24V DC version: the SELV 24 V power supply for this device must include
a protection of maximum 6 A.
n
36-72V DC version: the SELV 36-72 V power supply (according to NFC
15-100) for this device must include a protection of maximum 6 A.
n
The circuit breaker must be switched off during maintenance operation.
Refer to labels in the product.
n
All cables must be attached either to the wall (wall-mounted version) or to
the frame of the cabinet (Rack version) before being connected to the
various terminals strips, to prevent any pulling on these terminal strips. In
addition, the wires of each terminal strips must be attached to each other
to maintain the various isolations if an initial fault occurs.
n
The time distribution cables must not run alongside high power mains
cables (to avoid interference with communication between the SIGMA
and the clocks).
n
The SIGMA must be attached (to the wall or on its support) before being
switched on.
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