Hitachi S1 Series User Manual

S1 series standard inverter
-201-
Derating coefficient (%)
100
80
60
40
20
0
1000 2000 3000 4000
Altitude (m)
10.2.2.3 Derating due to carrier frequency
The power of S1 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.
10.3 Grid specifications
Grid voltage
AC 1PH 220V (-15%)–240V (+10%)
AC 3PH 380V (-15%)–440V (+10%)
Short-circuit capacity
According to the definition of IEC 60439-1, the 0.4–15kW inverters
are suitable for the use on the grid with the maximum expected
short-circuit current no more than 5kA at the maximum rated
voltage; the 18.5–110kW inverters are suitable for the use on the
grid with the maximum expected short-circuit current no more than
22kA at the maximum rated voltage; the 132–400kW inverters are
suitable for the use on the grid with maximum expected
short-circuit current no more than 100kA at the maximum rated
voltage.
Frequency
50/60 Hz±5%, with a maximum change rate of 20%/s
10.4 Motor connection data
Motor type
Asynchronous induction 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

Hitachi S1 Series Specifications

General

Brand	Hitachi
Model	S1 Series
Category	Inverter
Language	English