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Safety instructions
Residual hazards
2.2
Residual hazards
Protection of persons
Before working on the regenerative power supply module, check that no voltage is
ƒ
applied to the power terminals.
– After mains disconnection, the power terminals +UG, -UG remain live for at least
3 minutes.
The operating temperature of the heatsink at the regenerative power supply
ƒ
module is > 70 °C:
– Skin contact with the heatsink results in burns.
All pluggable terminals must only be plugged on or removed when no voltage is
ƒ
applied!
Device protection
Cyclic connection and disconnection of the supply voltage can overload and destroy
ƒ
the input current limitation of the connected regenerative power supply modules:
– Allow at least 3 minutes between disconnection and reconnection!
The regenerative power supply module has no overload protection:
ƒ
– The rated current and maximum current values specified in the technical data
must not be exceeded.
If the DC-bus voltage increases during the feedback operation by more than 75 V
ƒ
(EMB9341/EMB9342) or 100 V (EMB9343) above the rectified value of the mains
voltage, the regenerative power supply module will be overloaded. This may destroy
the device.
– For this reason, the feedback operation must be inhibited if the DC-bus voltage
reaches impermissible values.
– For this purpose please follow the circuit proposals (
2.3
Safety instructions for the installation according to U
Warnings!
General markings:
ƒ
ƒ
Markings provided for the supply units:
ƒ
80
Use 60/75 °C or 75 °C copper wire only.
Maximum ambient temperature 40 °C.
Suitable for use on a circuit capable of delivering not more than 5000 rms
symmetrical amperes, 480 V max, when protected by K5 or H Fuses
(400/480 V devices).
124).
or U
L
R
EDBMB9340 DE/EN/FR 9.0
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