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The Drive Solution
Harmonic distortion can come from many sources including computers, fluorescent lights,
copiers, and six-pulse drives. The HX7, with Toshiba's patented 18-pulse autotransformer
design, removes the distortion that would normally be generated by a six-pulse drive.
• Typically Meets IEEE-519 Guidelines without Adding Filters
• Produces a Ripple-Free Voltage on DC Bus
• Clean Sinusoidal Input Current Waveform
• Up to 60% Reduction in Transformer Losses
• Typical Total Harmonic Current Distortion (ITHD) 6 to 8%
• True Power Factor > 0.98
INPUT CURRENT HARMONICS
100
90
80
70
60
H
50
40
% OF FUNDAMENTAL
30
20
G
10
0
5
7
11
13
17
19
23
HARMONIC NUMBER
Small Footprint
F
The high cost of real estate and constraints
of existing facilities make size an important
E
consideration in drive selection.
- 500 HP Drive Only 42" Wide
- 24" Depth on All Sizes
D
- Integrated Phase-Shifting Autotransformer
- Saves Real Estate on New Designs
- Easy Replacement for Old Drives
in Existing Facilities
C
• 60 to 200 HP: 100"H x 30"W x 24"D
• 250 to 500 HP: 100"H x 42"W x 24"D
B
• 600 to 800 HP: 100"H x 76"W x 24"D
(Addition of a bypass option will increase enclosure size.)
A
8
7
6-Pulse (Typical)
18-Pulse HX7 6-8% ITHD (Typical)
25
29
31
35
37
41
43
47
8
7
Current
Voltage
6
5
Ch1
500mV
Ch2
49
W
30.0000
90.0000
18.0688
24.7500
6
5
4
3
e: 60 Hz
@
: 113 Hz
5.00mVΩ
M2.00ms
Ch1
10mV
D
H
4
3
2
2
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