On-load tap-changer OILTAP V

www.reinhausen.com On-load tap-changer OILTAP V Technical Data TD 82/03

Table of Contents Table of Contents 1 General... 4 1.1 Summary of the technical data... 4 1.2 Survey... 6 2 Technical Data... 13 2.1 Rated through-current (I u ), rated step voltage (U i ) and step capacity (P StN )... 13 2.2 On-load tap-changer V III 250 Y/D and V III 400 Y/D... 13 2.3 Restriction of the rated step voltage U i... 14 2.4 Contact life... 14 2.5 Rated withstand voltages of the internal insulation... 15 3 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 V III 200 D V III 350 Y V III 350 D V I 350 Number of poles and 3 3 3 3 1 application neutral point at any point on neutral point at any point on the winding the winding Max. rated through-current I um 200 350 (in A) Rated short-time withstand 4 5 current (in ka) Rated short-circuit duration 3 3 (in s) Rated peak withstand current (in ka) 10 12,5 Max. rated step 10 contacts 1500 1500 voltage U im 12 contacts 1200 to 1400 1200 to 1400 (in V) 14 contacts 1000 1000 Step capacity 10 contacts 300 525 (P StN ) 12 contacts 280 420 (in kva) 14 contacts 200 350 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 40 76 123 40 76 123/76 40 76 123 40 76 123/76 40 76 equipment U m (in kv) 1 Highest operating voltage 40 76 123 30 55 79 40 76 123 30 55 79 30 55 U b (phase - phase) on diverter switch (in kv) Rated lightning impulse U m 40 U m 76 U m 123 U m 123/76 withstand voltage (in kv, 1,2 I 50) 200 350 550 550 AC withstand voltage 70 140 230 230 (in kv, 50 Hz, 1 min.) Rated withstand voltages of see table 4 internal insulation Oil compartment 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. Oil suction pipe Installed as standard (for details, see BA 18) Temperature range 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 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 without change- 125 165 140 185 85 volume over selcctor (ca. in dm 3 ) with change- 155 200 170 220 115 over selcctor Oil filling quantity V S and minimum volume ΔV 1 of the diverter switch oil compartment (in dm 3 ) V S ΔV V S ΔV V S ΔV V S ΔV V S ΔV without change- 100 14 145 19 110 15 165 21 68 10 over selector with 125 16 165 20 135 18 180 22 85 12 over selector 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) 8996820E 6 TD 82/03 EN

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 Example: On-load tap-changer V III 200 / 350 Y, basic connection diagram 10 10 0 10 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 Example: On-load tap-changer V III 200 / 350 Y, basic connection diagram 10 19 1 G 12 TD 82/03 EN

2 Technical Data 2 Technical Data 2.1 Rated through-current (I u ), rated step voltage (U i ) and step capacity ((P StN ) On-load tap-changer V III 200 Y/D V III 350 Y/D, V I 350 Contacts 10 12 14 10 12 14 I u (A) 200 200 200 350 300 350 350 U i (V) 1500 1400 1000 1500 1400 1200 1000 P StN (kva) 300 280 200 525 420 420 350 Table 2 Rated through-currents (I u ), related rated step voltages (U i ) and step capacities (P StN ), at highest and lowest rated step voltage of the step capacity curve (see fig. 6) 8997600E Fig. 6 Step capacities (I u, U i ) 2.2 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 I um = 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 U i 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 U i = 13 500 V, 12 contacts: Total U i = 13 200 V, 14 contacts: Total U i = 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. 2.4 Contact life The mean expected contact life of the arcing tap-changer contacts can be estimated based on the relative load (= I u / I um ) 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. Basic connection diagram Rated step voltage U i (in V) 10 10 0 1 500 U i = 13 500 V 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 1 200 U i = 13 200 V 12 11 1 W 1 400 12 23 1 W 1 200 12 23 3 W 1 320 12 23 1 G 1 200 12 11 1 G 1 400 12 23 3 G 1 320 Fig. 7 Expected mean contact life under average load n Number of operations I u Rated through-current I um Max. rated through-current 14 14 0 1 000 U i = 13 000 V 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 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 Voltage shape and V III 200 D V III 350 Y V I 350 period V III 350 D V III 200 Y a, a1 b c2 f 10 contacts 12 contacts 14 contacts U m = 40 kv U m = 76 kv U m = 123 kv/76 U m = 123 kv U m = 40 kv U m = 76 kv U m = 123/76 kv U m = 123 kv U m = 40 kv U m = 76 kv U m = 123/76 kv U m = 123 kv kv 1.2 50 μs 200 200 200 kv 50 Hz 1min 50 50 50 kv 1.2 50 μs 180 180 180 kv 50 Hz 1min 50 50 50 kv 1.2 50 μs 170 170 170 kv 50 Hz 1min 50 50 50 b 1 b 2 b 3 kv 1.2 50 μs 230 230 300 200 kv 50 Hz 1min 70 70 90 70 kv 1.2 50 μs 350 490 520 200 kv 50 Hz 1min 140 165 180 70 kv 1.2 50 μs 550 580 620 kv 50 Hz 1min 150 165 180 kv 1.2 50 μs 200 kv 50 Hz 1min 70 c2 1 c2 2 kv 1.2 50 μs 350 350 350 kv 50 Hz 1min 140 140 140 kv 1.2 50 μs 490 520 350 kv 50 Hz 1min 165 180 140 kv 1.2 50 μs 580 620 kv 50 Hz 1min 165 180 kv 1.2 50 μs 350 kv 50 Hz 1min 140 f 1 f 2 f 1 f 2 f 1 f 2 kv 1.2 50 μs 200 300 200 300 200 300 kv 50 Hz 1min 70 90 70 90 70 90 kv 1.2 50 μs 350 490 350 490 350 490 kv 50 Hz 1min 140 165 140 165 140 165 kv 1.2 50 μs 550 580 kv 50 Hz 1min 230 230 kv 1.2 50 μs 550 550 kv 50 Hz 1min 230 230 Table 4 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 Without change-over selector With reversing switch (+) - position With reversing switch ( ) - position With coarse tap selector (+) - position a1 = Between tap selector contacts of the winding of one tap position (connected or not connected) 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. 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 b 1, b 2 or b 3 must be adhered to for any insulation distance: b 1 = Between selected contacts of different phases b 2 = From the selected contact of one phase to the unselected contacts of other phases b 3 = Between unselected contacts of different phases f = To ground The following applies to designs without change-over selector. f 1 = Between selected tap selector contacts and ground f 2 = Between unselected tap selector contacts and ground The following applies to designs with change-over selector. f 1 = Between selected change-over selector contacts and ground f 2 = Between unselected change-over contacts and ground 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. c2 1 = Between one (-) - change-over selector contact and one (+) - change-over selector contact of another phase c2 2 = Between one (-) - change-over selector contact of different phases With coarse tap selector ( ) - position 8997570E Fig. 8 Specific voltage stress of the tap winding 16 TD 82/03 EN

3 Appendix 3 Appendix Dimension drawings, U m = 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... 893945 On-load tap-changer OILTAP V 350... 893821 On-load tap-changer OILTAP V 200, tie-in resistors attached on the side... 898289 On-load tap-changer OILTAP V 350, tie-in resistors attached on the side... 898216 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... 898530 Additional drawings On-load tap-changer head... 893779 Special design for installation in bell-type tanks... 893864 On-load tap-changer head with mounting flange for pressure relief valve... 895167 Swivelling range of the gear unit, drive shaft left... 894679 Swivelling range of the gear unit, drive shaft right... 894680 Horizontal drive shaft (standard and special design)... 893772 Directory of additional drawings for on-load tap-changer OILTAP V in acc. w. note in the dimension drawings... 898018 TD 82/03 EN 17

8939498E On-load tap-changer OILTAP V V III 200 Y - 40 to 123-0, dimension drawing 18 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 On-load tap-changer OILTAP V V III 200 D - 40 to 123/76-0, dimension drawing 20 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 On-load tap-changer OILTAP V V III 350 Y - 40 to 123-0, dimension drawing 22 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 On-load tap-changer OILTAP V V III 350 D - 40 to 123/76-0, dimension drawing 24 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 On-load tap-changer OILTAP V V I 350-40 to 76-0, dimension drawing 26 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 On-load tap-changer OILTAP V Installation drawing 28 TD 82/03 EN

8938218E On-load tap-changer OILTAP V 350 Installation drawing TD 82/03 EN 29

8982891E On-load tap-changer OILTAP V III 200 Y/D Tie-in resistors, attached on the side 30 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 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 32 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 On-load tap-changer OILTAP V Design with flange for pressure relief valve Swivelling range of the gear unit, drive shaft left 36 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 On-load tap-changer OILTAP V Horizontal drive shaft (standard and special design) 38 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

www.reinhausen.com Maschinenfabrik Reinhausen GmbH Phone +49 941 40 90-0 Falkensteinstrasse 8 Fax +49 941 40 90-111 93059 Regensburg, Germany E-Mail sales@reinhausen.com Please note: The data in our publications may differ from the data of the devices delivered. We reserve the right to make changes without notice. TD 82/03 EN F0017802 Printed in Germany