11 Technical data
Maschinenfabrik Reinhausen GmbH 2019
65
6107891/02 EN
ECOTAP
®
VPD
®
11.2 Technical data for the on-load tap-changer
Type
ECOTAP® VPD III 30
ECOTAP® VPD III 100
Number of phases
3
Application
At any point in the winding
Permitted transformer types
Free breathing with oil conservator
Entirely oil-filled sealed transformers (without gas cushion)
Free breathing with air cushion only in combination with a spe-
cial variant of the ECOTAP VPD (on request)
Maximum rated through current
30 A
100 A
Rated short-time current
600 A
2,000 A
Rated duration of short-circuits
2 s
Rated peak withstand current
1,500 A
5,000 A
Without change-over selector
▪ Maximum rated step voltage
825 V
825 V
▪ Step capacity
24,750 VA
82,500 VA
With change-over selector
▪ Maximum rated step voltage
550 V
550 V
▪ Step capacity
16,500 VA
55,000 VA
Maximum number of operating positions
9 / 17
Rated insulation level:
▪ Highest voltage for equipment Um
36 kV / 40.5 kV
▪ Rated withstand voltages
See section "Permitted voltage stresses" [
Rated frequency
50 Hz, 60 Hz
Permissible temperature range of transformer oil for
on-load tap-change operations:
▪ Mineral insulating oil (IEC 60296)
-25°C – +105°C
▪ Synthetic ester fluid (IEC 61099)
On request
▪ Natural ester fluid (IEC 62770)
On request
Permissible absolute pressure during operation
0.7…1.4 bar
▪ At a reduced service life of 250,000 switching opera-
tions and 25 years:
Optional 0.7…2.0 bar
Vacuum drying
Vacuum proof
Maximum number of tap-change operations
500,000
Resistance to corrosion
Unpainted, optional CX
Table 10: ECOTAP® VPD III technical data
