Morgensen MSI350 Series, User Manual, Page: 343 / 388

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Note: It is not recommended to use the inverter at a temperature higher than 50°C. If you do, you shall
be held accountable for the consequences caused.
B.2.2.2 Derating due to altitude
When the altitude of the site where the inverter is installed is lower than 1000 m, the inverter can run
at the rated power. If the altitude is higher than 1000 m, the allowable output power is derated. For
details about the derating, see the following figure.
B.2.2.3 Derating due to carrier frequency
The power of MSI350 series inverters varies according to carrier frequencies. The rated power of an
inverter is defined based on the carrier frequency set in factory. If the carrier frequency exceeds the
factory setting, the power of the inverter is derated by 10% for each increased 1 kHz.
B.3
Grid specifications
Grid voltage
AC 3PH 380V (-15%)–440V (+10%)
AC 3PH 520V (-15%)–690V (+10%)
Short-circuit capacity
According to the definition in IEC 60439-1, the maximum allowable
short-circuit current at the incoming end is 100 kA. Therefore, the
inverter is applicable to scenarios where the transmitted current in the
circuit is no larger than 100 kA when the inverter runs at the maximum
rated voltage.
Frequency 50/60 Hz±5%, with a maximum change rate of 20%/s
B.4
Motor connection data
Motor type
asynchronous induction motor or permanent-magnet synchronous
motor
Voltage
0–U1 (rated voltage of the motor), 3PH symmetrical, Umax (rated
voltage of the inverter) at the field-weakening point
Short-circuit protection
The short-circuit protection for the motor output meets the
requirements of IEC 61800-5-1.