OSRAM POWERTRONIC PT-FIT I ECG for HID lamps, with cable clamp - Manual (Page 31)

THE PRODUCT IN OPERATION
For all versions it is important to keep in mind the typical
conditions required for discharge lamps; namely high
ignition voltage and temperatures. The selection and tech-
nically correct integration of lamp sockets in accordance
with the applicable standards (e.g. IEC 60598/VDE 0711,
IEC 60335/VDE 0700) is the responsibility of the user.
Sockets consist of several components, each of which
have their own functional limits. Failure to remain within
these limits will cause premature failure of the socket.
More information on the integration and use of lamp sockets
can be found in the OSRAM application guide: "Metal halide
lamps" – hints on application and use"
When changing the system (from HQL to NAV or HCI lamps),
the socket must be tested and/or replaced.
2.4.9. Protection against electrostatic build-up in
outdoor luminaires
Electrostatic charge in metal parts of outdoor luminaires
may in some circumstances cause failure or damage to
the ECG. Such metal parts are charged by clouds or light-
ning storms and may reach voltages of up to 50 kV. In or-
der to prevent their discharge onto the ECG, the following
aspects in the luminaire design should be considered, to
ensure a problem-free operation of the ECG:
1. Connection or wiring between the metal part of the
luminaire and the "Equipotential" terminal of the ECG
2. The distance between this metal part and the ECG
should be at least 8 mm
3. The lamp cables should have double insulation
These measures should ensure that high voltages can be
limited to 6 to 8 kV. The PTo can generally withstand such
voltages.
When installing the luminaire on masts, depending on the
mast being used, further preventive measures may be
needed, so that no electrostatic discharges can reach the
luminaire from the ground via the mast.
31
GND
L N
L
N
L
N
GND
L N
L N
L
N
L
N
L N
L N
L
N
L
N
L N
Figure 34: Safe connection with lightning conductor outside –
Class I luminaire
Figure 35: Safe connection with lightning conductor outside –
Class II plastic luminaire
Figure 36: Safe connection with lightning conductor outside –
Class II metal luminaire