Siemens MICROMASTER 420 Reference Manual

(1*,1((5,1*,1)250$7,21 ,QWHUQDWLRQDO(QJOLVK
MICROMASTER 420 Reference Manual
38 Issue A1
2.19

Power Losses
Figure 2-16 shows the power loss for the MICROMASTER 420 Inverters. The
graphs can be used to read either the loss at full load of a particular variant or to
read the part load loss. For example, the full load loss of a 0.55 kW 400 V inverter
is 52 W; the loss from a 2.2 kW 230 V unit at 50% load is approximately 82 W.
Figure 2-16 Power Losses
)UDPH6L]H $9003RZHUORVVHV
0
10
20
30
40
50
60
70
80
0.12 0.25 0.37 0.55 0.75
3RZHURXWSXWN:
3
R
Z
H
U

/
R
V
V

:
)UDPH6L]H$9003RZHUORVVHV
0
20
40
60
80
100
120
140
160
0.37 0.55 0.75 1.1 1.5
3RZHURXWSXWN:
3
R
Z
H
U

/
R
V
V

:
)UDPH6L]H%9003RZHUORVVHV
0
20
40
60
80
100
120
140
160
1.1 1.5 2.2
3RZHURXWSXWN:
3
R
Z
H
U

/
R
V
V

:
)UDPH6L]H&9003RZHUORVVHV
0
50
100
150
200
250
300
350
400
450
345.5
3RZHURXWSXWN:
3
R
Z
H
U

/
R
V
V

:
)UDPH6L]H%9003RZHUORVVHV
0
50
100
150
200
250
2.2 3 4
3RZHURXWSXWN:
3
R
Z
H
U

/
R
V
V

:
)UDPH6L]H&9003RZHUORVVHV
0
50
100
150
200
250
300
350
400
450
500
5.5 7.5 11
3RZHURXWSXWN:
3
R
Z
H
U

/
R
V
V

:

Siemens MICROMASTER 420 Specifications

General

Power Range	0.12 kW to 11 kW
Output Voltage	0 to input voltage
Input Frequency	47 Hz to 63 Hz
Output Frequency	0 Hz to 650 Hz
Overload Capacity	150% for 60 seconds
Enclosure Rating	IP20
Input Voltage	200 V to 240 V (±10%), 380 V to 480 V (±10%)
Control Type	V/f control
Braking	Optional braking module
Protection Features	Overcurrent, overvoltage, undervoltage, overload, short circuit, ground fault
Cooling	Air-cooled
Ambient Temperature	-10 °C to +50 °C
Communication Interfaces	USS protocol