VACUTAP® VBO®
The first resistor-type bolt-on tap-changer in vacuum technology
VACUTAP® VBO® is the first resistor-type, bolt-on on-load tap-changer (OLTC) in vacuum technology offering all advantages of this established technology enriched with further possibilities by an innovative direct drive system. VACUTAP® VBO® is retrofit-compatible, flange mounting and winding connection are identical to existing AT on-load tap-changer design. Innovative direct-drive technology eliminates drive shafts or bevel gears and enables a remote and flexible installation of the drive control cabinet.
Your Advantages at a Glance
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VACUTAP® technology offers nearly maintenance-free on-load tap-changers for all electrical energy supply applications
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State of the art intelligent direct drive offers maximum flexibility
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1:1 retrofit of corresponding AT-type OLTCs possible
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Remote installation of motor control cabinet
Product Information
| Number of phases | III |
| Max. rated through-current Ir | 400 A |
| Rated short-time withstand current | 4 kA |
| Rated short-circuit duration | 3 s |
| Rated peak withstand current | 10 kA |
| Max. rated step voltage Uir | 825 V |
| Step capacity PStN | 330 kVA |
| Rated frequency | 50…60 Hz |
| Number of positions | without COS*: 17 / with COS*: 33 |
| Motor-drive | ETOS® ID, direct drive |
| Rated voltage level Highest voltage for equipment Um |
40 kV |
| Rated lightning impulse withstand voltage [1.2/50 μs] | 200 kV |
| Rated short-duration power frequency withstand voltage [50 Hz, 1 min] | 70 kV |
| * COS = Change-over selector | |
Select language
| Number of phases | III |
| Max. rated through-current Ir | 400 A |
| Rated short-time withstand current | 4 kA |
| Rated short-circuit duration | 3 s |
| Rated peak withstand current | 10 kA |
| Max. rated step voltage Uir | 825 V |
| Step capacity PStN | 330 kVA |
| Rated frequency | 50…60 Hz |
| Number of positions | without COS*: 17 / with COS*: 33 |
| Motor-drive | ETOS® ID, direct drive |
| Rated voltage level Highest voltage for equipment Um |
40 kV |
| Rated lightning impulse withstand voltage [1.2/50 μs] | 200 kV |
| Rated short-duration power frequency withstand voltage [50 Hz, 1 min] | 70 kV |
| * COS = Change-over selector | |
Select language
