Output Power Of The Hm7042-3; Thermal Overload Protection - Hameg HM7042-3 Bedienungsanleitung

Careful operation is required by parallel conection of the 5.5V
source with one 32V output.

Output power of the HM7042-3

Thermal overload protection

Attention!
In this case the unit can only put back in operation with the
mains switch (4).
This is possible, after a the temperature is below 40°C.
Subject to change without notice
By series or parallel connection, some specifications like internal
resistance, load regulation and noise of the HM7042-3 may change.
The HM7042-3 is capable of delivering an output power of up to 145
Watts.
By series and parallel connection, the maximum output power does
not change. Due to combination of the sources, especially when
operating with low voltages and high currents, a high power
dissipation and bad cooling may cause a shutdown of the unit.
The HM7042-3 features a temperature controlled fan. At rising
temperature the fan will rotate at higher speed, thus maintaining
good heat transfer. For all normal operating conditions the cooling
is adiquate.
All outputs of the HM7042-3 are short-circuit protected. The triple
power supply contains two types of thermal overload protection
functions.
1) A bi-metal in the power transformer interrupts mains voltage.
The output sockets (1)/(11) and (21) are no longer powered. All
functions are off. After reaching lower temperature, the unit will
switch itself on again (remove shorts!).
2) An electronic fuse is integrated in to the HM7042-3, which at
extrem high temperatures (e.g. caused by shorts on the sockets
(11)) will disconnect the sources from the output. This mode is
indicated by the flashing LED (12) on the front panel. The display
(2)/(10)/(16) will show the previously selected values for volt-
age.
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