On-load tap-changer OILTAP V

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1 On-load tap-changer OILTAP V Technical Data TD 82/03

3 Table of Contents Table of Contents 1 General Summary of the technical data Survey Technical Data Rated through-current (I u ), rated step voltage (U i ) and step capacity (P StN ) On-load tap-changer V III 250 Y/D and V III 400 Y/D Restriction of the rated step voltage U i Contact life Rated withstand voltages of the internal insulation Appendix dimension and installation drawings 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

4 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 application neutral point at any point on neutral point at any point on the winding the winding Max. rated through-current I um (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 voltage U im 12 contacts 1200 to to 1400 (in V) 14 contacts Step capacity 10 contacts (P StN ) 12 contacts (in kva) 14 contacts 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 U m (in kv) 1 Highest operating voltage 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) AC withstand voltage (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

5 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) Displacement without change volume over selcctor (ca. in dm 3 ) with change 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 over selector with 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 C TD 82/03 EN 5

6 1 General 1.2 Survey Fig. 1 Survey of the designs (no. of poles, change-over selector, and installation lengths) E 6 TD 82/03 EN

7 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 E_1 TD 82/03 EN 7

8 1 General Fig. 2b excerpt from E_2 8 TD 82/03 EN

9 1 General Fig. 2c excerpt from E_3 TD 82/03 EN 9

10 1 General Fig. 3 Example: On-load tap-changer V III 200 / 350 Y, basic connection diagram TD 82/03 EN

11 1 General Fig. 4 Example: On-load tap-changer V III 200 / 350 Y, basic connection diagram W TD 82/03 EN 11

12 1 General Fig. 5 Example: On-load tap-changer V III 200 / 350 Y, basic connection diagram G 12 TD 82/03 EN

13 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 I u (A) U i (V) P StN (kva) 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) E 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

14 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 = V, 12 contacts: Total U i = V, 14 contacts: Total U i = 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) U i = V W W G W G G U i = V W W W G G G Fig. 7 Expected mean contact life under average load n Number of operations I u Rated through-current I um Max. rated through-current U i = V W G W W G G Table 3 Max. rated step voltage 14 TD 82/03 EN

15 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 μs kv 50 Hz 1min kv μs kv 50 Hz 1min kv μs kv 50 Hz 1min b 1 b 2 b 3 kv μs kv 50 Hz 1min kv μs kv 50 Hz 1min kv μs kv 50 Hz 1min kv μs 200 kv 50 Hz 1min 70 c2 1 c2 2 kv μs kv 50 Hz 1min kv μs kv 50 Hz 1min kv μs kv 50 Hz 1min kv μs 350 kv 50 Hz 1min 140 f 1 f 2 f 1 f 2 f 1 f 2 kv μs kv 50 Hz 1min kv μs kv 50 Hz 1min kv μs kv 50 Hz 1min kv μs kv 50 Hz 1min 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

16 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 E Fig. 8 Specific voltage stress of the tap winding 16 TD 82/03 EN

17 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 With change-over selector On-load tap-changer OILTAP V III 200 D Without change-over selector With change-over selector On-load tap-changer OILTAP V III 350 Y Without change-over selector With change-over selector On-load tap-changer OILTAP V III 350 D Without change-over selector With change-over selector On-load tap-changer OILTAP V I 350 Without change-over selector With change-over selector Installation drawings On-load tap-changer OILTAP V On-load tap-changer OILTAP V 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 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 17

18 E On-load tap-changer OILTAP V V III 200 Y - 40 to 123-0, dimension drawing 18 TD 82/03 EN

19 E On-load tap-changer OILTAP V V III 200 Y - 40 to W/G, dimension drawing TD 82/03 EN 19

20 E On-load tap-changer OILTAP V V III 200 D - 40 to 123/76-0, dimension drawing 20 TD 82/03 EN

21 E On-load tap-changer OILTAP V V III 200 D - 40 to 123/76 - W/G, dimension drawing TD 82/03 EN 21

22 E On-load tap-changer OILTAP V V III 350 Y - 40 to 123-0, dimension drawing 22 TD 82/03 EN

23 E On-load tap-changer OILTAP V V III 350 Y - 40 to W/G, dimension drawing TD 82/03 EN 23

24 E On-load tap-changer OILTAP V V III 350 D - 40 to 123/76-0, dimension drawing 24 TD 82/03 EN

25 E On-load tap-changer OILTAP V V III 350 D - 40 to 123/76 - W/G, dimension drawing TD 82/03 EN 25

26 E On-load tap-changer OILTAP V V I to 76-0, dimension drawing 26 TD 82/03 EN

27 E On-load tap-changer OILTAP V V I to 76 - W/G, dimension drawing TD 82/03 EN 27

28 E On-load tap-changer OILTAP V Installation drawing 28 TD 82/03 EN

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

30 E On-load tap-changer OILTAP V III 200 Y/D Tie-in resistors, attached on the side 30 TD 82/03 EN

31 E On-load tap-changer OILTAP V III 350 Y/D Tie-in resistors, attached on the side TD 82/03 EN 31

32 E 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

33 E On-load tap-changer OILTAP V On-load tap-changer head TD 82/03 EN 33

34 E On-load tap-changer OILTAP V Special design for bell-type tank installation Lifting device O-ring 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 Lifting traverse see dwg TD 82/03 EN

35 E On-load tap-changer OILTAP V Mounting flange for pressure relief valve TD 82/03 EN 35

36 E 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

37 E 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

38 E 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.

39 E 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 Installation drawing for on-load tap-changer OILTAP V On-load tap-changer head On-load tap-changer head, bell-type tank Horizontal drive shaft TD 82/03 EN 39

40 Maschinenfabrik Reinhausen GmbH Phone Falkensteinstrasse 8 Fax Regensburg, Germany 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 F Printed in Germany

On-Load Tap changer Type V

Easun - MR Tap changers (P) Ltd., Chennai, India ON-LOAD TAP CHANGER TYPE V Easun - MR Tap Changers (P) Ltd., 612 (232), M.T.H. Road, Tiruninravur, Chennai - 602 024, India Phone : 91-44 - 26390863 ( Hunting