Bosch PST 6000 Series Technical Information page 13

Safety instructions
1-7
DANGEROUS ELECTRICAL VOLTAGE
Before the modules are installed, the respective mounting station
must be safely isolated from supply and properly safeguarded to pre-
vent unintentional or unauthorized reclosing.
CAUTION
Short circuits!
When cut-outs are drilled or sawed in switchgear cubicles, metal
burr may get into modules already installed there. Or, when cooling
water lines are connected, water may leak into the thyristor power
units installed.
The possibility of short circuits occurring in the process or even the
destruction of the devices cannot be entirely ruled out.
Therefore, guard any existing modules well before you install a new
module! Any and all warranty excluded in case of non-compliance.
CAUTION
Heat accumulation!
Thyristor power units must be mounted with a minimum clearance
of 100 mm on top and at the bottom. Without this minimum clearance,
heat may accumulate and cause power unit failure.
CAUTION
In the case of air cooled thyristor power units, the temperature inside
the housing must stay within the specified range. Thyristor power
units must always be operated under forced air cooling conditions.
Convection cooling will not be sufficient!
CAUTION
Leaks in the cooling water circuit may cause consequential damage!
Cooling water leaks may damage adjacent components. Therefore,
when mounting water-cooled modules, always ensure that other de-
vices in the switchgear cabinet are well protected against leaking
cooling water.
1070 080 058-101 (2001.04) GB