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On-load tap-changer OILTAP® V
Technical Data TD 82/03
Table of Contents
Table of Contents
1
2
General ..................................................................................................................................................................................................................
4
1.1
1.2
4
6
Technical Data ................................................................................................................................................................................................... 13
2.1
2.2
2.3
2.4
2.5
3
Summary of the technical data .......................................................................................................................................................
Survey .......................................................................................................................................................................................................
Rated through-current (Iu), rated step voltage (Ui) and step capacity (PStN) ................................................................
On-load tap-changer V III 250 Y/D and V III 400 Y/D ..............................................................................................................
Restriction of the rated step voltage Ui ........................................................................................................................................
Contact life .............................................................................................................................................................................................
Rated withstand voltages of the internal insulation ................................................................................................................
13
13
14
14
15
Appendix – dimension and installation drawings .............................................................................................................................. 17
NOTE
These technical data are intended for the calculator and designer of the transformer. These type-specific data are only
valid in connection with the information contained in the general section (TD 61) since this section contains important
information on such subjects as potential connection, leakage inductance, current division, and so on.
Dimensional drawings and connection diagrams are subject to change without prior notice.
Drawings submitted during bidding and ordering are always binding.
Since the on-load tap-changer is delivered to the specifications of the transformer manufacturer, the transformer
manufacturer is responsible for selecting the correct properties of the on-load tap-changer so that the requirements
of the transformer are met.
TD 82/03 EN
3
1 General
1
General
1.1
Summary of the technical data
On-load tap-changer
V III 200 Y
Number of poles and
application
3
neutral point
V III 200 D
V III 350 Y
V III 350 D
V I 350
3
3
neutral point
3
1
at any point on
at any point on
the winding
Max. rated through-current Ium
(in A)
the winding
200
350
Rated short-time withstand
current (in kA)
4
5
Rated short-circuit duration
(in s)
3
3
10
12,5
Rated peak withstand current
(in kA)
Max. rated step
voltage Uim
(in V)
10 contacts
12 contacts
14 contacts
1500
1200 to 1400
1000
1500
1200 to 1400
1000
Step capacity
(PStN)
(in kVA)
10 contacts
12 contacts
14 contacts
300
280
200
525
420
350
Rated frequency (in Hz)
50 to 60
Operating positions
without change-over selector: max. of 14
with change-over selector: max. of 27
Rated insulation level
Highest voltage for
equipment Um (in kV)1
40 76 123
40 76 123/76
40 76 123
40 76 123/76
40
76
Highest operating voltage
Ub (phase - phase) on
diverter switch (in kV)
40 76 123
30 55
40 76 123
30 55
30
55
Rated lightning impulse
withstand voltage
(in kV, 1,2 I 50)
AC withstand voltage
(in kV, 50 Hz, 1 min.)
Um 40
79
Um 76
Oil suction pipe
Temperature range
350
550
550
70
140
230
230
see table 4
Pressure-proof up to 0.3 bar, continuous difference pressure (test pressure 0.6 bar),
head and cover of the on-load tap-changer are vacuum-proof.
Installed as standard (for details, see BA 18)
The on-load tap-changer OILTAP® V can be operated in the rated load range with
oil temperatures of -25 °C to +105 °C.
Table 1a
4
Um 123/76
200
Rated withstand voltages of
internal insulation
Oil compartment
Um 123
79
TD 82/03 EN
1 General
On-load tap-changer
V III 200 Y
V III 200 D
V III 350 Y
V III 350 D
V I 350
Weight without oil (ca. in kg)
130
140
140
150
120
Displacement
volume
(ca. in dm3)
without changeover selcctor
125
165
140
185
85
with changeover selcctor
155
200
170
220
115
Oil filling
quantity VS
and minimum
volume ΔV1 of
the diverter
switch oil
compartment
(in dm3)
VS
ΔV
VS
ΔV
VS
ΔV
VS
ΔV
VS
ΔV
without changeover selector
100
14
145
19
110
15
165
21
68
10
with
over selector
125
16
20
135
18
180
22
85
12
165
Table 1b
Notes for table 1a:
1)
In accordance with VDE 0111, part 1: R.m.s. value of the phase-phase voltage for which a piece of equipment is rated for its
insulation.
Notes for table 1b:
1)
Applies to oil temperature ϑ = – 30 °C ... +100 °C
TD 82/03 EN
5
1 General
1.2
Survey
Fig. 1 Survey of the designs (no. of poles, change-over selector, and installation lengths)
6
TD 82/03 EN
8996820E
1 General
Survey of the basic connection diagrams (fig. 2a, 2b, 2c) with designation of the tap selector terminal contacts in accordance
with MR standards. This contact designation corresponds to the specifications in the on-load tap-changer dimension
drawings.
Fig. 2a
excerpt from 8906164E_1
TD 82/03 EN
7
1 General
Fig. 2b
excerpt from 8906164E_2
8
TD 82/03 EN
1 General
Fig. 2c
excerpt from 8906164E_3
TD 82/03 EN
9
1 General
Fig. 3
10
Example: On-load tap-changer V III 200 / 350 Y, basic connection diagram 10 10 0
TD 82/03 EN
1 General
Fig. 4
Example: On-load tap-changer V III 200 / 350 Y, basic connection diagram 10 19 1 W
TD 82/03 EN
11
1 General
Fig. 5
12
Example: On-load tap-changer V III 200 / 350 Y, basic connection diagram 10 19 1 G
TD 82/03 EN
2 Technical Data
2
Technical Data
2.1
Rated through-current (Iu), rated step voltage (Ui) and step capacity ((PStN)
On-load tap-changer
V III 200 Y/D
V III 350 Y/D, V I 350
Contacts
10
12
14
10
Iu (A)
200
200
200
350
300
350
350
Ui (V)
1500
1400
1000
1500
1400
1200
1000
PStN (kVA)
300
280
200
525
420
420
350
Table 2
12
14
Rated through-currents (Iu), related rated step voltages (Ui) and step capacities (PStN), at
highest and lowest rated step voltage of the step capacity curve (see fig. 6)
8997600E
Fig. 6
2.2
Step capacities (Iu, Ui)
On-load tap-changer V III 250 Y/D and V III 400 Y/D
On-load tap-changers V III 250 Y/D and V III 400 Y/D are available as special designs with a maximum rated
through-current of Ium = 250 A or 400 A.
Dimensional drawings on request.
TD 82/03 EN
13
2 Technical Data
2.3
Restriction of the rated step voltage Ui
Due to insulation, the rated step voltage is also limited by
the dielectric strength of the tap-changer, i.e. by limitation
of the total operating voltage across the contact circle.
The total voltage must not exceed the limit values.:
10 contacts: Total Ui = 13 500 V,
12 contacts: Total Ui = 13 200 V,
14 contacts: Total Ui = 13 000 V.
The rated step voltages Ui of these on-load tap-changers
depend on the basic connection diagrams as shown in
figures 2a, 2b and 2c and are valid under the condition
that the rated step voltage is constant within the entire
setting range.
Basic connection diagram
2.4
Contact life
The mean expected contact life of the arcing tap-changer
contacts can be estimated based on the relative load (= Iu/
Ium) as shown in fig. 7. Since actual contact life in individual cases depends on many influencing factors while in
service, only estimations can be given (not applicable to
constant current service).
The inspection regulations must be observed.
Rated step voltage Ui (in V)
1 500
∑ Ui = 13 500 V
10 10 0
10 09 1 W
10 19 1 W
10 09 1 G
10 19 3 W
10 19 1 G
10 19 3 G
1 500
12 12 0
12 11 1 W
12 23 1 W
12 23 3 W
12 23 1 G
12 11 1 G
12 23 3 G
1 200
1 400
1 200
1 320
1 200
1 400
1 320
∑ Ui = 13 200 V
14 14 0
14 13 1 W
14 13 1 G
14 27 1 W
14 27 3 W
14 27 1 G
14 27 3 G
1 000
∑ Ui = 13 000 V
Fig. 7
Expected mean contact life under average load
n
– Number of operations
Iu
– Rated through-current
Ium – Max. rated through-current
1 000
Table 3
Max. rated step voltage
14
TD 82/03 EN
2 Technical Data
2.5
Rated withstand voltages of the internal insulation
Fig. 8 shows the specific voltage stresses present on the tap winding. When selecting the on-load tap-changer, a check must
be made to determine whether the stress at the most unfavorable position on the on-load tap-changer does not exceed the
related rated withstand voltages as shown in table 4.
Insulation distances
10 contacts
a, a1 12 contacts
14 contacts
Um = 40 kV
Um = 76 kV
Um = 123 kV/76
b
Um = 123 kV
Um = 40 kV
Um = 76 kV
Um = 123/76 kV
c2
Um = 123 kV
Um = 40 kV
f
Um = 76 kV
Um = 123/76 kV
Um = 123 kV
Table 4
Voltage shape and
period
V III 200 D
V III 350 D
V III 350 Y
V III 200 Y
V I 350
200
50
180
50
170
50
200
50
180
50
170
50
b1
200
50
180
50
170
50
b2
b3
230
70
350
140
550
150
230
70
490
165
580
165
300
90
520
180
620
180
kV 1.2|50 μs
kV 50 Hz 1min
kV 1.2|50 μs
kV 50 Hz 1min
kV 1.2|50 μs
kV 50 Hz 1min
kV 1.2|50 μs
kV 50 Hz 1min
kV 1.2|50 μs
kV 50 Hz 1min
kV 1.2|50 μs
kV 50 Hz 1min
kV 1.2|50 μs
200
70
200
70
200
kV 50 Hz 1min
kV 1.2|50 μs
kV 50 Hz 1min
kV 1.2|50 μs
kV 50 Hz 1min
kV 1.2|50 μs
kV 50 Hz 1min
kV 1.2|50 μs
kV 50 Hz 1min
kV 1.2|50 μs
kV 50 Hz 1min
kV 1.2|50 μs
kV 50 Hz 1min
kV 1.2|50 μs
kV 50 Hz 1min
kV 1.2|50 μs
kV 50 Hz 1min
70
c21
350
140
490
165
580
165
c22
350
140
520
180
620
180
350
140
350
140
350
140
f1
f2
f1
f2
f1
f2
200
70
350
140
550
230
300
90
490
165
580
230
200
70
350
140
300
90
490
165
200
70
350
140
300
90
490
165
550
230
550
230
Rated withstand voltages (in kV) of the insulation distances (rated lightning impulse withstand voltage,
AC withstand voltage) on the on-load tap-changer
TD 82/03 EN
15
2 Technical Data
a1 = Between tap selector contacts of the winding of one tap position
(connected or not connected)
Without
change-over
selector
a = Between beginning and end of a tapped winding and, with coarse
tap winding, between beginning and end of a coarse tap winding.
Note for coarse tapping arrangement in (-) - position of the changeover selector:
When stressed with impulse voltage, the permissible withstand
voltage „a“ must be adhered to between the end of a coarse tap
winding connected with the K tap selector contact and the tap
selector contact at the end of the tapped winding of the same phase.
With
reversing
switch
(+) - position
b = Between the tap selector contacts of different phases and between
change-over selector contacts of different phases, which are connected with the beginning/end of a tapped winding or with a tap
selector contact.
With tap-changers for delta connection, the permissible voltages
between the contacts depend on the positions of the change-over
selector and the tap selector. This is why the various withstand
voltages b1, b2 or b3 must be adhered to for any insulation distance:
b1 = Between selected contacts of different phases
b2 = From the selected contact of one phase to the unselected
contacts of other phases
b3 = Between unselected contacts of different phases
With
reversing
switch
(–) - position
f
= To ground
The following applies to designs without change-over selector.
f1 = Between selected tap selector contacts and ground
f2 = Between unselected tap selector contacts and ground
The following applies to designs with change-over selector.
f1 = Between selected change-over selector contacts and ground
f2 = Between unselected change-over contacts and ground
With coarse
tap selector
(+) - position
In addition, with coarse tapping arrangement in (+) - position of the
change-over selector:
c2 = Between (-) - change-over selector contacts of different phases and
of one (-) -change-over selector and one (+) - change-over contact of
another phase
Different permissible values apply to tap-changers for delta connections.
c21 = Between one (-) - change-over selector contact and one
(+) - change-over selector contact of another phase
c22 = Between one (-) - change-over selector contact of
different phases
With coarse
tap selector
(–) - position
8997570E
Fig. 8
16
Specific voltage stress of the tap winding
TD 82/03 EN
3 Appendix
3
Appendix
Dimension drawings, Um = 40 kV and 123 kV
On-load tap-changer OILTAP® V III 200 Y
Without change-over selector .......................................................................................................................................................................... 893949
With change-over selector ................................................................................................................................................................................. 893950
On-load tap-changer OILTAP® V III 200 D
Without change-over selector .......................................................................................................................................................................... 893952
With change-over selector ................................................................................................................................................................................. 893951
On-load tap-changer OILTAP® V III 350 Y
Without change-over selector .......................................................................................................................................................................... 898212
With change-over selector ................................................................................................................................................................................. 898213
On-load tap-changer OILTAP® V III 350 D
Without change-over selector .......................................................................................................................................................................... 893955
With change-over selector ................................................................................................................................................................................. 893956
On-load tap-changer OILTAP® V I 350
Without change-over selector .......................................................................................................................................................................... 893957
With change-over selector ................................................................................................................................................................................. 893958
Installation drawings
On-load tap-changer OILTAP® V 200 ..............................................................................................................................................................
On-load tap-changer OILTAP® V 350 ..............................................................................................................................................................
On-load tap-changer OILTAP® V 200, tie-in resistors attached on the side ......................................................................................
On-load tap-changer OILTAP® V 350, tie-in resistors attached on the side ......................................................................................
On-load tap-changer OILTAP® V III 200 Y / V III 350 Y, tie-in resistors attached on the cylinder for 2, 3 or
4 tie-in resistors/phase ........................................................................................................................................................................................
893945
893821
898289
898216
898530
Additional drawings
On-load tap-changer head ................................................................................................................................................................................
Special design for installation in bell-type tanks .......................................................................................................................................
On-load tap-changer head with mounting flange for pressure relief valve ....................................................................................
Swivelling range of the gear unit, drive shaft left ....................................................................................................................................
Swivelling range of the gear unit, drive shaft right ..................................................................................................................................
Horizontal drive shaft (standard and special design) ................................................................................................................................
Directory of additional drawings for on-load tap-changer OILTAP® V in acc. w. note in
the dimension drawings ......................................................................................................................................................................................
TD 82/03 EN
893779
893864
895167
894679
894680
893772
898018
17
8939498E
18
On-load tap-changer OILTAP® V
V III 200 Y - 40 to 123 - 0, dimension drawing
TD 82/03 EN
8939508E
On-load tap-changer OILTAP® V
V III 200 Y - 40 to 123 - W/G, dimension drawing
TD 82/03 EN
19
8939528E
20
On-load tap-changer OILTAP® V
V III 200 D - 40 to 123/76 - 0, dimension drawing
TD 82/03 EN
8939518E
On-load tap-changer OILTAP® V
V III 200 D - 40 to 123/76 - W/G, dimension drawing
TD 82/03 EN
21
8982122E
22
On-load tap-changer OILTAP® V
V III 350 Y - 40 to 123 - 0, dimension drawing
TD 82/03 EN
8982132E
On-load tap-changer OILTAP® V
V III 350 Y - 40 to 123 - W/G, dimension drawing
TD 82/03 EN
23
8939559E
24
On-load tap-changer OILTAP® V
V III 350 D - 40 to 123/76 - 0, dimension drawing
TD 82/03 EN
8939569E
On-load tap-changer OILTAP® V
V III 350 D - 40 to 123/76 - W/G, dimension drawing
TD 82/03 EN
25
8939579E
26
On-load tap-changer OILTAP® V
V I 350 - 40 to 76 - 0, dimension drawing
TD 82/03 EN
8939589E
On-load tap-changer OILTAP® V
V I 350 - 40 to 76 - W/G, dimension drawing
TD 82/03 EN
27
8939456E
28
On-load tap-changer OILTAP® V
Installation drawing
TD 82/03 EN
8938218E
On-load tap-changer OILTAP® V 350
Installation drawing
TD 82/03 EN
29
8982891E
30
On-load tap-changer OILTAP® V III 200 Y/D
Tie-in resistors, attached on the side
TD 82/03 EN
8982162E
On-load tap-changer OILTAP® V III 350 Y/D
Tie-in resistors, attached on the side
TD 82/03 EN
31
8985302E
32
On-load tap-changer OILTAP® V III 200 Y / V III 350 Y
Tie-in resistors, attached on the cylinder for 2, 3 or
4 tie-in resistors/phase
TD 82/03 EN
8937799E
On-load tap-changer OILTAP® V
On-load tap-changer head
TD 82/03 EN
33
8938644E
On-load tap-changer OILTAP® V
Special design for bell-type tank installation
Lifting device
O-ring 44.2 - 5.7
Lifting traverse (illustrated in turned position)
Transformer
cover
Washer 8
Gasket
Supporting flange
Lifting traverse
Z
-
Centering bolt
Further dimensions of tap changer
head see dwg. 893 779
Lifting traverse see dwg. 893 805
34
TD 82/03 EN
8951673E
On-load tap-changer OILTAP® V
Mounting flange for pressure relief valve
TD 82/03 EN
35
8946793E
36
On-load tap-changer OILTAP® V
Design with flange for pressure relief valve
Swivelling range of the gear unit, drive shaft left
TD 82/03 EN
8946804E
On-load tap-changer OILTAP® V
Design with flange for pressure relief valve
Swivelling range of the gear unit, drive shaft right
TD 82/03 EN
37
8937723E
38
On-load tap-changer OILTAP® V
Horizontal drive shaft (standard and special design)
TD 82/03 EN
8980183E
On-load tap-changer OILTAP® V
Directory of the additional drawings in acc. w. note in
dimension drawings
Installation drawing for
on-load tap-changer OILTAP® V 200...........................................
893945
Installation drawing for
on-load tap-changer OILTAP® V 350...........................................
893821
On-load tap-changer head ...........................................................
893779
On-load tap-changer head,
bell-type tank.....................................................................................
893864
Horizontal drive shaft ......................................................................
893772
TD 82/03 EN
39
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93059 Regensburg, Germany
Phone +49 941 40 90-0
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Please note: The data in our publications may differ from the data of the devices delivered.
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TD 82/03 EN • F0017802 • Printed in Germany