15
Technical information
and start-up
BSC624-12V-B
Windings of the HF power transformers
If the temperature at the windings of the HF power transformers reaches >/= 106°C, the current is reduced
successively to a temperature value of < 131°C.
At >/= 131°C, the device shuts down.
If the temperature falls to </= 129°C, the device is operable again with reduced power according to the
derating diagram.
With a shut-down of the device, the signal
E_OVERTEMP
is emitted.
Transformer stage switches
If the temperature at the transformer stage switches reaches >/= 95°C, the current is reduced successively to
a temperature value of >/= 120°C .
At >/= 120°C, the device shuts down.
If the temperature falls to < 120°C, the device is operable again with reduced power according to the derating
diagram.
With a shut-down of the device, the signal
E_OVERTEMP
is emitted.
3.4.4
HV – Overvoltage shut-down
The device provides the following possibilities for identifying an overvoltage at the HV side:
Rapid HW overvoltage identification (immediate shut-down of the device if voltage > 470 V)
Slow SW overvoltage identification (shut-down of the device if voltage > 456 V; automatic reactivation if
voltage < 454 V)
With a shut-down of the device, the signal
E_HV_OVERVOL
is emitted.
