DRV-28 inverter
s Technical data
-311-
Derating coefficient (%)
100
80
60
40
20
0
1000
2000
3000
4000
Altitude (m)
B.2.2.3 Derating due to carrier frequency
The power of DRV-28 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 400V (-20%)
–440V (+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.
Frequency
0–400 Hz
Frequency resolution
0.01 Hz
Current
See the rated current.
Power limit
1.5 times of the rated power of the motor
Field-weakening point
10–400 Hz
Carrier frequency
4, 8, 12, or 15 kHz
B.4.1 EMC compatibility and motor cable length
The following table describes the maximum motor cable lengths that meet the requirements of the EU
EMC directive (2004/108/EC) when the carrier frequency is 4 kHz.
All models (with external EMC filters)
Maximum motor cable length (m)
