BTS Powersafe PWM — static IGBT voltage stabiliser
Country: Italy · Model: BTS Powersafe PWM
The BTS Powersafe PWM static stabiliser holds the output voltage to ±1 % and responds to a grid change in 30 ms. It contains no variator or electric drive, so the unit is designed for sites that a service crew rarely reaches.
- Technology
- solid-state IGBT switch, no moving parts
- Stabilisation accuracy
- ±1 %
- Response time
- 30 ms
- Regulation
- linear over the whole range
Technical specifications
| Technology | solid-state IGBT switch, no moving parts |
|---|---|
| Stabilisation accuracy | ±1 % |
| Response time | 30 ms |
| Regulation | linear over the whole range |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
Regulation is done by solid-state IGBT switches with pulse-width modulation, hence the designation PWM. There are no wearing brushes or moving parts, so the routine maintenance of the current collector, usual for variator stabilisers, is not needed. The regulation characteristic is linear over the whole range, without the dips at switching that occur in stepped circuits. Short grid sags are compensated within a fraction of a second, and a sensitive load hardly notices them. Behind the cabinet there are usually rectifiers, inverters and air conditioners of a base station or other equipment that needs stable voltage.
How to choose
The choice between versions of BTS Powersafe depends on the main problem of the site. PWM is taken when ±1 % accuracy, a 30 ms response and no maintenance of moving assemblies are needed, and the base model with an isolation transformer and a three-pole SPD when the line carries a lot of noise and surges. For an industrial supply of 10–300 kVA there is the electromechanical BST-T, and above 400 kVA the BST-TH series. The power of the PWM version is confirmed with the manufacturer for the station load.
Request a price and lead time
BTS Powersafe PWM — static IGBT voltage stabiliser. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What stabilisation accuracy does BTS Powersafe PWM have?
The output voltage is held to ±1 % over the whole regulation range.
How fast does the PWM IGBT stabiliser respond?
The response time is 30 ms, so short grid sags are compensated almost unnoticed by the load.
Does BTS Powersafe PWM need brush replacement?
No, it has no variator, drive or brushes. Regulation is done by IGBT switches, so there are no wearing moving parts.
Does the PWM stabiliser have voltage dips during regulation?
No, regulation is linear over the whole range, without the steps and dips typical of circuits with stepped winding switching.
Which is better for a base station, PWM or the version with an isolation transformer?
PWM gives ±1 % accuracy and a 30 ms response without maintenance. The version with an isolation transformer and SPD is more appropriate where the line carries a lot of noise and lightning surges.
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