BST-T — electromechanical voltage stabiliser 10–300 kVA
Country: Italy · Model: BST-T
The BST-T electromechanical stabiliser is designed for loads of 10–300 kVA and regulates voltage with a motorised toroidal variable autotransformer. It is installed at the supply of a workshop, a line or a single critical consumer when the grid sags or rises within ±15 %, ±20 % or −25/+15 %.
- Power
- 10–300 kVA
- Principle
- motorised toroidal variable autotransformer
- Input voltage range
- ±15 %, ±20 %, −25/+15 % and others on request
- Design
- enclosure with a base for moving by forklift
Technical specifications
| Power | 10–300 kVA |
|---|---|
| Principle | motorised toroidal variable autotransformer |
| Input voltage range | ±15 %, ±20 %, −25/+15 % and others on request |
| Design | enclosure with a base for moving by forklift |
| Testing | TÜV, IEC 61439-1/-2 |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
A servo motor moves the current collector along the turns of the toroidal autotransformer, and the output voltage changes smoothly, without steps. The version is selected by two parameters, the load power and the expected range of input voltage fluctuations. Besides symmetrical ranges, the manufacturer makes an asymmetrical −25/+15 % and others on request, which is convenient for grids where the voltage mostly sags. The enclosure stands on a base for forklift forks, so the cabinet is brought in and moved around the switchroom without an overhead crane. The design has been tested by TÜV for compliance with IEC 61439-1/-2, the standard for low-voltage switchgear assemblies, which simplifies approval by the design organisation.
How to choose
The main criterion is the load power with a margin for starting currents, and the second parameter is the real range of grid fluctuations, which is best measured with a recorder before ordering. If the load exceeds 300 kVA, move to the BST-TH on column variators with a range from 400 to 3000 kVA. For sensitive electronics that need ±1 % accuracy and a 30 ms response with no moving parts, the static BTS Powersafe PWM on IGBTs is more suitable.
Request a price and lead time
BST-T — electromechanical voltage stabiliser 10–300 kVA. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What load power do BST-T stabilisers cover?
The BST-T range covers 10–300 kVA. For larger loads the manufacturer offers the BST-TH series on column variators.
What input voltage range can the BST-T withstand?
Standard versions are designed for ±15 %, ±20 % or −25/+15 % of the nominal value. Other ranges are made to order for a specific grid.
How does a toroidal variator in a stabiliser differ from relay regulation?
The variator changes the transformation ratio smoothly, so the output voltage does not jump in steps as in relay models. The drive is motorised and regulation takes place automatically.
Which standards were the BST-T stabilisers tested to?
The stabilisers have passed TÜV testing for compliance with IEC 61439-1/-2.
How is the BST-T cabinet moved and installed?
The enclosure has a base for forklift forks, so the cabinet is brought into the switchroom with an ordinary forklift or a hydraulic pallet truck.
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.