11
Introduction of
SINUS MV
Theory and Hardware
Chapter 3
Figure 3-1
SINUS MV
Standard MV VFD system diagram (take 10kV for example
）
IEC 61000-2-4:2002
Electromagnetic compatibility (EMC) Part 2- Environment chapter 4- Compatibility levels in
industrial equipments for low-frequency conducted disturbances.
IEC 61000-4-7:2002
Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques chapter 7.
Standard guide on harmonics and inter-harmonics measurements and instrumentation, for power
supply systems and equipment connected.
IEC 61800-3:2004
Adjustable speed electrical power dive systems Part 3:product standard including specific test
methods.
IEC 60757-1983
Identification of insulated and bare conductors by colors.
IEC guideline 106:1989
Environment condition guides for specifying performance rating of equipments.
DL/T 994-2006
Power station fan and water pump medium voltage VFD
3.1 Theory
SINUS MV
MV VFD is composed of transformer, power cells and control system.
CellA1
CellB1
CellC1
CellA2
CellB2
CellC2
CellA8
CellB8
CellC8
CellA9
CellB9
CellC9
10 kV
Motor
Test of
Output
Voltage
HIMI
I/O
Board
Test of
Input
Voltage
Input Power
Isolated
Transformer
Test of Output Current
Power Cell
I/O SIGNAL
I/
O SIGNAL
RS485
, MODBUS COMMUNICATION
PROTOCOL
Controller
RJ45
Test of Input Current
380V Assistant Winding
Remote control
Host control
RS485
H
