Toshiba W7 Series Manuale Utente

Total Harmonic Distortion (TDHE) can come from many sources, including computers,

fluorescent lights, copiers and six pulse drives. The W7, with Toshibaʼs patented 18 Pulse

Autotransformer design, removes this concern.
• Meets IEEE 519 Guidelines without Added Filters

• Produces a Ripple Free Voltage on DC Bus

• Clean Sinusoidal Input Current Waveform

• Up to 60% Reduction in Transformer Losses

The Drive Solution for Water and Wastewater

INPUT CURRENT HARMONICS

100

HARMONIC NUMBER

6 Pulse (Typical)

18 Pulse W7

e: 60 Hz

: 113 Hz

Ch1

500mV

Ch2

5.00mVΩ

M2.00ms

Ch1

10mV

Current

Voltage

Small Footprint

The high cost of real estate and constraints

of existing facilities make size an important

consideration in drive selection.
- 400 HP Drive Only 42” Wide

- 24” Depth on All Sizes

- Integrated Phase-Shifting Autotransformer

- Saves Real Estate on New Designs

- Easier Replacement of Old Drives

in Existing Facilities

• 60-200 HP: 100”H x 30”W x 24”D

• 250-400 HP: 100”H x 42”W x 24”D

• 500-800 HP: Consult Factory

(Addition of a bypass option will increase enclosure size)

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* US Patent 6396723
JP Patent 2000-179543 (Pending)