Your contact at Siteco: Name : Department ... - POWERLAB

10 Appendix
Installation and operation guidelines
High frequency gear on 3 phase systems
The illustration opposite shows the wiring of luminaires or
groups of luminaires with 3 phase switching and with common
N-conductor (neutral conductor). When the common neutral
conductor is interrupted in a 3 phase star wired system it is
possible that the HF ballasts may be damaged.
Mains
L1
L2
L3
Over voltage / under voltage / loss of neutral conductor
1. Check whether the mains voltage is within the acceptable
values. (application range AC/DC between 198 V and 254 V).
2. Ensure permanent and secure neutral connection to all
luminaires
3. Disconnection and rewiring should only be carried out when
no supply voltage is present.
4. In star wired systems simultaneous disconnection of all
phases must be carried out.
N
Luminaire
with HFG
1 2 3
Important:
• The luminaires must not be connected during 500V DC
isolation resistance testing, otherwise the test voltage will
occur between neutral conductor (N) and all three phase
conductors (L1,L2,L3) corresponding to the VDE 0100 T 600
section 9.
• The It is adequate in new equipment to test isolation between
the phase conductors (L1,L2,L3) and earth (E) without
connecting the luminaire. Neutral conductor (N) and earth
conductor (E) must not be connected at the same time. The
disconnection of the neutral conductor is only permitted if
mains voltage is removed before testing.
• The Ensure correct neutral connection before energising
• The Do not remove the neutral conductor separately without
disconnecting supply first.
3 phase circuit
L1
Normal
1
N
2
230 V
L2 400 V L3
3
Fault
L2
400 V
2
400 V
L1
N
!
1
400 V
3
L3
appendix