Restrictions For Special Ambient Conditions - Siemens SINAMICS G120 Hardware Installation Manual

Technical data

7.7 Restrictions for special ambient conditions

7.7 Restrictions for special ambient conditions
Maximum current at low speeds
NOTICE
Negative impact on the inverter service life as a result of overheating.
Loading the inverter with a high output current and at the same time with a low output
frequency can cause the current-conducting components in the inverter to overheat.
Excessively high temperatures can damage the inverter or have a negative impact on the
inverter service life.
● Never operate the inverter continuously with an output frequency = 0 Hz.
● Only operate the inverter in the permissible operating range.
Figure 7-2
● Continuous operation:
Operating state that is permissible for the complete operating time.
● Short-time duty:
Operating state that is permissible for less than 2 % of the operating time.
● Sporadic short-time duty:
Operating state that is permissible for less than 1 % of the operating time.
74
Permissible operating range of the inverter
Hardware Installation Manual, 11/2016, A5E37800827C AB
PM240P-2 Power Modules