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2 Engineering
2.2 Electrical power network
24
DE1 variable speed starter
09/14 MN040011EN
www.eaton.com
2.2.2 Mains voltage and frequency
The DE1 variable speed starter's wide tolerance range makes it possible to
use the device with European (U
LN
= 230 V/400 V, 50 Hz) and American
(U
LN
= 240 V/480 V, 60 Hz) standard voltages:
•
230 V, 50 Hz; 240 V, 60 Hz at DE1-12…
200 V - 10 % - 240 V + 10 % (180 V - 0 % - 264 V + 0 %)
•
400 V, 50 Hz; 480 V, 60 Hz at DE1-34…
380 V - 10 % - 480 V + 10 % (342 V - 0 % - 528 V + 0 %)
The permissible frequency range for all voltage categories is 50/60 Hz
(48 Hz - 0% - 62 Hz + 0%).
When using variable speed starters that work with a three-phase power
supply (DE1-34…), the mains voltage unbalance (phase–phase) must be
smaller than 3%. If this condition is not met, or if the unbalance at the point
of connection is unknown, it is recommended to use a mains choke with the
appropriate rating (see
Section 9.9, “DX-LN… mains chokes”, page 157)
and a u
k
value
≦
4%.
2.2.3 Total Harmonic Distortion (THD)
The THD value (THD = Total Harmonic Distortion) is defined in standard
IEC/EN 61800-3 as the ratio of the rms value of all harmonic components to
the rms value of the fundamental frequency.
DE1-34… variable speed starters, which work with a three-phase power
supply, are designed as low harmonic drives. This means that it is not
necessary to use a mains choke in order to reduce THD levels.
2.2.4 Reactive power compensation
→
Voltage unbalances greater than 3% will cause the DE1 variable
speed starter to shut down with a fault message.
(The
Fault Code
LED will flash cyclically 9 times
with a 2-second pause, Table 51, page 166.)
→
When using DE1-12… variable speed starters, which work with
a single-phase power supply, THD levels can be reduced by
about 30% by placing a mains choke upstream of the device
(
Section 9.9, “DX-LN… mains chokes”, page 157).
→
In the AC supply systems with non-choked reactive current
compensation devices, current oscillations, antiresonances and
undefinable circumstances can occur.
If you are designing systems in which variable speed starters
will be connected to AC power supply systems with undefined
conditions, make sure to incorporate mains chokes into your
design
Содержание PowerXL DE1 series
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Страница 36: ...2 Engineering 2 5 Motor Selection 32 DE1 variable speed starter 09 14 MN040011EN www eaton com ...
Страница 68: ...3 Installation 3 6 Block diagrams 64 DE1 variable speed starter 09 14 MN040011EN www eaton com ...
Страница 132: ...7 Modbus RTU 7 4 Operating mode Modbus RTU 128 DE1 variable speed starter 09 14 MN040011EN www eaton com ...
Страница 146: ...8 Technical Data 8 4 Dimensions 142 DE1 variable speed starter 09 14 MN040011EN www eaton com ...
Страница 172: ...10 Fault messages 10 3 Fault list 168 DE1 variable speed starter 09 14 MN040011EN www eaton com ...
Страница 186: ...182 DE1 variable speed starter 09 14 MN040011EN www eaton com ...