3.2.2 IE and IES Classes
Complete drive modules (CDM)
According to the standard EN 50598-2, the complete drive
module comprises the frequency converter, its feeding
section, and its auxiliaries.
Energy efficiency classes for the CDM:
•
IE0 = below state of the art.
•
IE1 = state of the art.
•
IE2 = above state of the art.
Danfoss frequency converters fulfill energy efficiency class
IE2. The energy efficiency class is defined at the nominal
point of the CDM.
Power drive systems (PDS)
A power drive system consists of a complete drive module
and a motor.
Energy efficiency classes for the PDS:
•
IES0 = Below state of the art.
•
IES1 = State of the art.
•
IES2 = Above state of the art.
Depending on the motor efficiency, motors driven by a
Danfoss VLT
®
frequency converter typically fulfill energy
efficiency class IES2.
The energy efficiency class is defined at the nominal point
of the PDS and can be calculated based on the CDM and
the motor losses.
3.2.3 Power Loss Data and Efficiency Data
The power loss and the efficiency of a frequency converter
depend on configuration and auxiliary equipment. To get a
configuration-specific power loss and efficiency data, use
the Danfoss ecoSmart tool.
The power loss data is provided in % of rated apparent
output power and are determined according to EN
50598-2. When the power loss data are determined, the
frequency converter uses the factory settings except for
the motor data which is required to run the motor.
T
f
100%
50%
50%
90%
25%
0%
0%
130BE605.10
T
Torque-producing current [%]
f
Frequency [%]
Illustration 3.10 Frequency Converter Operating Points
According to EN 50598-2
Refer to
www.danfoss.com/vltenergyefficiency
for the power
loss and efficiency data of the frequency converter at the
operating points specified in
.
Use the Danfoss ecoSmart application to calculate IE and
IES efficiency classes. The application is available at
.
Example of available data
The following example shows power loss and efficiency
data for a frequency converter with the following charac-
teristics:
•
Power rating 55 kW (75 hp), rated voltage at
400 V.
•
Rated apparent power, Sr, 67.8 kVA.
•
Rated output power, P
CDM
, 59.2 kW (79.4 hp).
•
Rated efficiency, η
r
, 98.3%.
and
show the power loss
and efficiency curves. The speed is proportional to the
frequency.
Basic Operating Principle o...
Design Guide
MG80C502
Danfoss A/S © 10/2016 All rights reserved.
17
3
3
Содержание VLT AHF 005
Страница 2: ......
