PWM — single-phase digital static voltage stabiliser 2.1–14 kVA
Country: United Kingdom · Model: PWM
The PWM digital single-phase stabiliser of 2.1–14 kVA gives 230 V ±1 % at an input voltage of 173–287 V. It is designed for IT and telecom equipment, that is, server cabinets, communication nodes and UPS racks.
- Power
- 2.1–14 kVA
- Input voltage
- 173–287 V
- Output accuracy
- 230 V ±1 %
- Response time
- within 200 ms
Technical specifications
| Power | 2.1–14 kVA |
|---|---|
| Input voltage | 173–287 V |
| Output accuracy | 230 V ±1 % |
| Response time | within 200 ms |
| Efficiency | ≥ 95 % |
| Technology | PWM, static electronic |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
Voltage is regulated by pulse-width modulation (PWM), a static electronics design without brushes or a servo motor. Correction takes place within 200 ms. Such output accuracy is useful when an online UPS stands behind the stabiliser, because with an even input voltage it switches to battery less often. Efficiency is at least 95 %, so in a closed server room the unit adds little heat. The lower limit of 173 V corresponds to a grid sag of about a quarter, and on rural lines with deeper dips a different unit will be needed. The compact enclosures are placed next to a rack or on the floor of the server room.
How to choose
The model is chosen by the full load power in kVA, allowing for the UPS charging current. If the grid at the site drops below 173 V, it is better to take the ESR with an input range of up to ±50 % for 3–100 kVA. For household appliances up to 5 kVA the simpler VR is enough.
Request a price and lead time
PWM — single-phase digital static voltage stabiliser 2.1–14 kVA. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What output voltage accuracy does the PWM stabiliser give?
230 V ±1 %, which suits IT and telecom equipment with a narrow supply tolerance.
At what input voltage does the PWM work?
The stabiliser holds the output at an input voltage from 173 to 287 V, so it copes with both sags and high voltage at night.
How quickly does the PWM respond to a voltage change?
Correction takes place within 200 ms after a change of voltage in the grid, and for server power supplies such a transition is unnoticeable.
Is it worth installing the PWM stabiliser in front of a UPS?
Yes, a stable input reduces the number of UPS transfers to battery and preserves battery life.
What is the efficiency of the PWM stabiliser?
At least 95 %, so even at a 14 kVA load the heat output remains moderate.
Similar products
REQUEST
Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.