SIEMENS
Introduction
1/3
Siemens D 86.2 · 2007
1
■
Benefits
The benefits of the HT-direct motors:
•
With slow-running drives, the efficiency of the HT-direct motors
is approximately 2 to 3% higher than for similar drive con-
cepts. For a 1000 kW motor, this results in a saving of 33 kW,
which is an annual saving of approximately 15000
€
for an
operating time of 8 hours per day.
•
The multi-pole drive design ensures that the space require-
ment and mass of the motors are lower than for similar
induction machines. The slow-running motors of the HT-direct
series obviate the need for a gearbox in many cases
(reduction in engineering, assembly and maintenance outlay,
lower investment and lower operating costs).
•
Efficient, optimally matched drive system, SINAMICS con-
verter and HT-direct motor for operation without encoders.
•
Thanks to their long service life (nominal bearing lifetime
> 60000 hours), HT-direct motors are maintenance-low and
have a high availability especially for applications in which a
gearbox can be omitted.
•
Environmentally friendly system (where applicable,
no disposal of gearbox oil is necessary; energy-saving drive
system).
■
Application
Permanent-magnet synchronous motors are used in combina-
tion with converters as slow-running direct drives, e.g. for paper
machines, in the steel and plastics industries and in
shipbuilding.
Ordering example
Order No. code
Position
1
2
3
4
5
6
7
8
9
10 11 12
13 14 15 16
High-torque motors with permanent-magnet technology
1 F W 4
7 7 7
–
7
H
7 7
0 – 1 A A
7
– Z
Positions 1 to 3
(digit, character, character)
Type
Position 4
(digit)
Type series
Positions 5 to 7
(digits)
Frame size
Position 8
(digit)
Cooling method
Position 9
(character)
Number of poles
Position 10
(character)
Rated speed
Position 11
(digit)
Voltage
Position 12
(digit)
Type of construction
Position 13
(digit)
Rotor design
Position 14
(character)
(Not used at this time)
Position 15
(character)
Shaft version
Position 16
(digit)
Bearing design
Special versions
Please specify additional order code and any plain text
HT-direct motor, water-cooled
Order No.
1 F W 4 5 0 8 – 1
7 7 7 7
–
7
A
7 7
400 rpm; 40 kNm; 1676 kW; 690 V
*
→
Frame size 508
Temperature class 155 (F)
Used acc. to 155 (F)
IP55 degree of protection
IM B3 type of construction
Standard bearing design
Number of poles
–
H
Rated speed
–
C
Voltage
–
7
Type of construction
–
0
Rotor design
–
1
(Spare position)
–
A
Shaft version
–
A
Bearing design
–
0
Specify when ordering:
1 F W 4 5 0 8 – 1 H C 7 0 – 1 A A 0