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14 Technical data
Maschinenfabrik Reinhausen GmbH 2021
116
8209941/00 EN
ECOTAP
®
VPD
®
III 30D-24 / MD&C
14.2 Technical data for the on-load tap-changer
Type ECOTAP® …
VPD® III 30
Number of phases
3
Application
At any point in the winding
Permitted transformer types
Free breathing with oil conservator
Entirely oil-filled hermetically 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
Rated short-time current
750 A
Rated duration of short-circuits
2 s
Rated peak withstand current
1,875 A
▪ Maximum rated step voltage
550 V
▪ Step capacity
16,500 VA
Maximum number of operating positions
9
Rated insulation level:
▪ Highest voltage for equipment Um
24 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 to +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
Vacuum drying
Vacuum proof
Maximum number of tap-change operations
500,000
Resistance to corrosion
C4H
Table 27: ECOTAP® VPD® III technical data
Содержание ECOTAP VPD 3 30D-24
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