3. Verify absence of operating voltage.
4. Ground and short-circuit.
5. Provide protection against adjacent live parts.
To energize the system, apply the measures in reverse order.
2.4
Safe handling
Danger as a result of high voltages from external supplies
Even if the circuit breaker is open, parts of the converter can be under voltage (live) as a result
of the auxiliary voltage at the premagnetization, precharging or demagnetization transformers.
This danger is not limited to the converter, but can also occur with components that are
electrically connected to the converter (e.g. circuit breakers or isolators). Touching live parts
can result in death, serious injury, and damage to property.
● Isolate all components that can feed voltage to the converter before commencing work.
Danger due to high voltage in operation
When operating this equipment very high voltages develop. Even after switching off the mains
voltage, or while the connected machine is still turning, high voltages can remain for a
prolonged length of time. High voltages can cause death or serious injury if the safety rules are
not observed or if the equipment is handled incorrectly.
● Operate the device properly.
● Always follow the "The five safety rules (Page 13)" when performing any work.
● Service and maintain the device regularly and correctly.
Danger as a result of induced voltage
Rotating machinery can induce dangerous high voltages and synchronous motors that are not
de-excited immediately can also pose a hazard. If the connection to the motor is not isolated or
grounded, these voltages can also remain. Touching live parts can result in death or serious
injury.
● Before opening the doors, wait until the connected machine has come to a standstill.
Danger due to high auxiliary voltages
High auxiliary voltages are still present even after shutdown. Touching live parts can result in
death or serious injury.
● Observe the five safety rules when performing any work.
Safety information
2.4 Safe handling
SINAMICS SL150 6SL39616RC100AA02
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Operating Instructions Rev.201910281458 EXAMPLE
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