Ie And Ies Classes; Power Loss Data And Efficiency Data - Danfoss VLT Refrigeration Drive FC 103 Design Manual

System Integration

3.3.1 IE and IES Classes

Complete drive modules
According to the standard EN 50598-2, the complete drive
module (CDM) comprises the frequency converter, its
3 3
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 fulfil energy efficiency class
IE2. The energy efficiency class is defined at the nominal
point of the CDM.
Power drive systems
A power drive system (PDS) consists of a complete drive
module (CDM) 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
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.
50
frequency converter typically fulfil energy
Danfoss A/S © 08/2015 All rights reserved.
®
VLT Refrigeration Drive FC 103

3.3.2 Power Loss Data and Efficiency Data

The power loss and the efficiency of a frequency converter
depend on configuration and auxiliary equipment. Danfoss
provides configuration-specific power loss and efficiency
data at the operating points shown in Illustration 3.11. The
frequency and load define an operating point.
100
90
80
70
60
50
40
30
20
10
0
0
Illustration 3.11 Frequency Converter Operating Points
According to EN 50598-2, Load (L) [%] versus Frequency
(f) [%]
The power loss data are 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.
Refer to www.danfoss.com/vltenergyefficiency for the power
loss and efficiency data of the frequency converter at the
operating points specified in Illustration 3.11.
Use the VLT
efficiency classes. The application is available at vlt-
ecosmart.danfoss.com.
Example of available data
The following example shows power loss and efficiency
data for a frequency converter with the following charac-
teristics:
•
•
•
•
Illustration 3.12 and Illustration 3.13 show the power loss
and efficiency curves. The speed is proportional to the
frequency.
10 20
30 40 50 60
f [%]
®
ecoSmart application to calculate IE and IES
Power rating 55 kW, rated voltage at 400 V.
Rated apparent power, Sr, 67.8 kVA.
Rated output power, P , 59.2 kW.
CDM
Rated efficiency, η , 98.3%.
r
90 100
80
70
MG16G202