Grid Supply Voltages; Units Of Measurement - Eaton PowerXL DB1 Installation Manual

0.5 Grid supply voltages

0.6 Units of measurement

Name
Length
Power
Torque
Temperature
Speed
Weight
Flow rate
The rated operating voltages stated in the following table are based on the
standard values for star networks with a grounded central point.
In ring networks (as found 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 (as found in North America), the rated operating voltage at
the transfer point of the utility companies is higher than in the consumer
network: E.g.: 120 V → 115 V, 240 V → 230 V, 480 V → 460 V.
The broad tolerance range of the DB1 variable frequency drive allows for a
permitted voltage drop of 10 % (i. e. U
the North American grid voltage of 480 V + 10 % (60 Hz).
The measurements of grid voltage are always based on grid frequencies of
50/60 Hz within a range of 48 to 62 Hz.
￫
The permissible power supply for the DB1 series can be found
in ￫ section 1.4.3, "Performance characteristics", page 17.
Every physical dimension included in this manual uses international metric SI
(Système International d'Unités) units. For the purpose of the equipment's
UL certification, some of these dimensions are accompanied by their equiva-
lents in imperial units.
Table 1: Unit conversion examples
US-American
inch
horsepower
pound-force inches
Fahrenheit
Revolutions per minute
pound
cubic feet per minute
DB1 Variable Frequency Drives 08/18 MN040031EN www.eaton.com
LN
US-American value SI value
1 in ('') 25.4 mm
1 HP = 1.014 PS 0.7457 kW
1 lbf in 0.113 Nm
1 °F (T ) -17.222 °C (T
F
1 rpm 1 min
1 lb 0.4536 kg
1 cfm 1.698 m
0 About this manual
0.5 Grid supply voltages
- 10 %) and, in the 400-V category,
Conversion value
0.0394
1.341
8.851
) T = T
C F
-1
1
2.205
3
/min 0.5889
× 9/5 + 32
C
9