DC-DC CONVERTERS AND BATTERY CHARGERS
V6 / VS70 — LV and MV soft starters
Country: Spain · Model: V6 / VS70
The V6 and VS70 soft starters limit the starting current of low- and medium-voltage induction motors, from 7.5 to 1200 kW in the V6 series and up to 13.8 kV in the VS70 series. Both series have a built-in bypass.
- V6
- 16–1250 A (7.5–1200 kW), 200–690 V, efficiency ≥ 99 %
- VS70
- 50–500 A, 2.3–13.8 kV, efficiency ≥ 99.6 %, IP54
- Bypass
- built-in
Technical specifications
| V6 | 16–1250 A (7.5–1200 kW), 200–690 V, efficiency ≥ 99 % |
|---|---|
| VS70 | 50–500 A, 2.3–13.8 kV, efficiency ≥ 99.6 %, IP54 |
| Bypass | built-in |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The V6 series covers currents of 16–1250 A and 200–690 V grids, that is, most workshop motors from a small pump to a powerful compressor. The efficiency of this series is ≥ 99 %. The VS70 operates at 2.3–13.8 kV and currents of 50–500 A, has an efficiency of ≥ 99.6 % and an IP54 enclosure. After the motor has accelerated, the built-in bypass shunts the thyristors, so in steady state the losses and cabinet heating are minimal and no external bypass contactor is needed. Smooth acceleration reduces mechanical shocks in couplings and water hammer in pipelines.
How to choose
The choice starts with the motor voltage. Up to 690 V the V6 is used, and for 2.3–13.8 kV the VS70 is needed. Then the rated motor current is checked against the series range, 16–1250 A or 50–500 A, taking the starting frequency into account. If the machine must run at variable speed, an SD750 frequency converter up to 2200 kW or an XMV670 for 2.3–13.8 kV is installed instead of a soft starter.
Request a price and lead time
V6 / VS70 — LV and MV soft starters, Power Electronics. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What motor power range does the V6 soft starter cover?
The V6 is designed for motors of 7.5–1200 kW at currents of 16–1250 A and a voltage of 200–690 V.
What voltage does the VS70 work at?
The VS70 is intended for medium-voltage motors of 2.3–13.8 kV with a current of 50–500 A, and the enclosure has IP54 protection.
Why does a soft starter have a built-in bypass?
After the motor reaches rated speed, the bypass closes the power circuit around the thyristors. For this reason the efficiency of the V6 is at least 99 % and of the VS70 at least 99.6 %.
How does a soft starter differ from a frequency converter?
A soft starter limits the current only during acceleration, after which the motor runs directly from the grid. A frequency converter, such as the SD750, controls the speed throughout operation.
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