0 About This Manual
0.6 Mains supply voltages
DA1 Variable Frequency Drives
08/18 MN04020005Z-EN
www.eaton.com
9
0.6 Mains supply voltages
The rated operating voltages stated in the following table are based on the
standard values for networks with a grounded star point.
In ring networks (e. g. in Europe) the rated operating voltage at the transfer
point of the power supply companies is the same as the value in the
consumer networks (e. g. 230 V, 400 V).
In star networks (e. g. in North America), the rated operating voltage at the
transfer point of the utility companies is higher than in the consumer
network.
Example: 240 V
→
230 V, 480 V
→
460 V, 600 V
→
575 V.
The broad tolerance range of the DA1 variable frequency drive observes a
permitted voltage drop of 10 % (i. e. U
LN
- 10 %) and in the 400-V category,
the North American mains voltage of 480 V + 10 % (60 Hz).
The permissible power supplies for the DA1 series are listed in the technical
data section in the appendix.
The rated mains voltage operational data is always based on mains
frequencies of 50/60 Hz within a range of 48 to 62 Hz.
0.7 Units of measurement
Every physical dimension included in this manual uses international metric
system units, otherwise known as SI (Système International d’Unités) units.
For the purpose of the equipment's UL certification, some of these
dimensions are accompanied by their equivalents in imperial units.
Table 1: Unit conversion examples
Name
US-American
designation
US-American value
SI value
Conversion value
Length
inch
1 in (’’)
25.4 mm
0.0394
Power
horsepower
1 HP = 1.014 PS
0.7457 kW
1.341
Torque
pound-force inches
1 lbf in
0.113 Nm
8.851
Temperature
Fahrenheit
1 °F (T
F
)
-17.222 °C (T
C
)
T
F
= T
C
× 9/5 + 32
Speed
Revolutions per minute
1 rpm
1 min
-1
1
Weight
pound
1 lb
0.4536 kg
2.205
Flow rate
cubic feet per minute
1 cfm
1.698 m
3
/min
0.5889