Grid Specifications; Motor Connection Data; Emc Compatibility And Motor Cable Length - INVT Goodrive270 Series Operation Manual

Goodrive270 series VFD for fan and pump
B.2.2.3 Derating due to carrier frequency
The carrier frequency of the VFD varies with power class. The VFD rated power is defined based on
the carrier frequency factory setting. If the carrier frequency exceeds the factory setting, the VFD
power is derated by 10% for each increased 1 kHz.
B.3 Grid specifications
Grid voltage AC 3PH 380V–480V
According to the definition in IEC 61439-1, the maximum allowable short-circuit
Short-circuit current at the incoming end is 100 kA. Therefore, the VFD is applicable to
capacity scenarios where the transmitted current in the circuit is no larger than 100 kA
when the VFD 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
Voltage
Short-circuit
protection
Frequency
Frequency
resolution
Current
Power limit
Field-weakening
point
Carrier
frequency
B.4.1 EMC compatibility and motor cable length
The VFD supports the built-in and external filter solutions to meet IEC/EN 61800-3 Second
environment (C3) and First environment (C2) EMC requirements. According to the 4kHz carrier
frequency setting, the motor cable length requirements are as follows:
VFD power
range
1.5–22kW
30–132kW
160–500kW
Asynchronous induction motor or permanent-magnet synchronous motor
0–U1 (motor rated voltage), 3PH symmetrical, Umax (VFD rated voltage) at
the field-weakening point
The motor output short-circuit protection meets the requirements of IEC
61800-5-1.
0–400 Hz
0.01 Hz
See section 3.6 Product ratings.
1.1 times of the motor rated power
10–400 Hz
2, 4, 8, 12, or 15 kHz
Supported motor cable length (unit: m)
Built-in
Second
First environment
environment
category C3
20
30
30
environment
category C2
20
/
/
-331-
External
Second
First environment
category C3
/
/
/
Technical data
category C2
1
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1