Safe Handling - Siemens SINAMICS GL150 Operating And Installation Instructions

Safety information

2.4 Safe handling

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
High voltages from external supplies
Even if the circuit breaker is open, parts of the drive 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 drive, but can also occur with components that are electrically
connected to the drive (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.
High voltages during 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 converter properly.
● Always observe the "The five safety rules (Page 15)" when carrying out any work.
● Only remove the covers using the methods described by these operating instructions.
● Maintain the converter regularly and correctly.
● After you have switched off the supply voltage, do not carry out any maintenance or repair
High voltages from machines still turning and connected
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.
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WARNING
WARNING
work until the one minute discharge time for the RC snubber circuit capacitor has elapsed.
WARNING
SINAMICS GL150 6SL38503UM114PA0Z
Operating Instructions 04/2017