The construction features of EdM transformers

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Griffin Butler
5 years ago
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S GENERAL Thanks to the long experience of EdM and to the sophisticated calculation and design techniques, our transformers for distribution, rectifiers and distribution can be realised in a very

1 S GENERAL Thanks to the long experience of EdM and to the sophisticated calculation and design techniques, our transformers for distribution, rectifiers and distribution can be realised in a very large range of sizes, primary and secundary tensions, insulation classes and losses Following tables refer to the technical features of some of the transformers in our production range, choosen according to the most common types requested in power distribution applications For slightly different tensions (e.g. +/- 10%), the technical data change in a corresponding minor way. Different sizes, as like as different primary and secundary tensions are anyhow part of our production range and in our application experience. In this case it is useful to ask us for a confirmation of the technical data The construction features of EdM transformers 1 HV windings: resin coils, cast under vacuum; the aluminium windings minimise the thermal stress 2 Core composed oh three columns made in grain oriented magnetic steel sheets 3 LV windings of aluminuim foil and insulation material impregnated under vacuum LV connections usually at the top, on the bottom on demand 5 HV connections also available with elbow Elastimold Spacers with plastic and rubber inserts reducing vibration and hence the noise of the transformer 7 Off load tap changing links on the HV winding, allow step by step regulation to suit the supply voltage 8 Frame construction manufactured of robust painted steel 9 Bi-directional wheels in two perpendicular directions 10 The epoxy resin insulation has a high inflammability point and high self estinguishing characteristics; furthermore the maintenance requirements are reduced to a minimum 11 The control of the operating temperature of the transformer is by PT or PTC probes, placed in the LV windings and, on request, on the core 12 Lifting lugs for safe lifting on points 13 Optional direct connection of the LV outputs to the Zucchini busbars 1 The careful choice of the Class F insulation materials allow for a winding temperature rise of 80 or C 15 The frame is predisposed for the mounting of a solidal metal sheet enclosure Technical Data ed. 01/03/02

2 Norms CEI 1-/8 - IEC72 - CENELEC HD kva Primary Voltage 10 kv Insulation level 12 kv BIL 0 kv Secondary Voltage V Insulation level 1,1 kv / K Class E2 - C2 - F1 CESI certificate No 98/ issued on NORMAL LOSSES 10 kv NORMAL LOSSES Pressure level Power level at 1m kva Uk% P 0 (W) I 0 % , , , , , , , , , Transformer's size and weight, page 3; Enclosure's size and weight, page Technical Data page 1 ed. 01/03/02

3 Norms CEI 1-/8 - IEC72 - CENELEC HD kva Primary Voltage 10 kv Insulation level 12 kv BIL 0 kv Secondary Voltage V Insulation level 1,1 kv / K Class E2 - C2 - F1 CESI certificate No 98/ issued on REDUCED LOSSES 10 kv REDUCED LOSSES Pressure level Power level at 1m kva Uk% P0 (W) I0% , , , , , , , Transformer's size and weight, page 3; Enclosure's size and weight, page , Technical Data page 2 ed. 01/03/02

4 Size and weight - class 12kV kva Uk% Le Wi He If Ic ØR E F G H M kg (mm) (mm) (mm) (mm) (mm) (*) (*) Technical Data page 3 ed. 01/03/02

5 Norms CEI 1-/8 - IEC72 - CENELEC HD kva Primary Voltage 15 kv Insulation level 17,5 kv BIL 75 kv Secondary Voltage V Insulation level 1,1 kv / K Class E2 - C2 - F1 CESI certificate No 98/ issued on NORMAL LOSSES 15 kv NORMAL LOSSES Pressure level Power level at 1m kva Uk% P0 (W) I0% , , , , , , , , , Transformer's size and weight, page ; Enclosure's size and weight, page Technical Data page ed. 01/03/02

6 Norms CEI 1-/8 - IEC72 - CENELEC HD kva Primary Voltage 15 kv Insulation level 17,5 kv BIL 75 kv Secondary Voltage V Insulation level 1,1 kv / K Class E2 - C2 - F1 CESI certificate No 98/ issued on REDUCED LOSSES 15 kv REDUCED LOSSES Pressure level Power level at 1m kva Uk% P0 (W) I0% , , , , , , , ,7 Transformer's size and weight, page ; Enclosure's size and weight, page 10 0, Technical Data page 5 ed. 01/03/02

7 Size and weight - class 17,5kV kva Uk% Le Wi He If Ic ØR E F G H M kg (mm) (mm) (mm) (mm) (mm) (*) (*) (*) Technical Data page ed. 01/03/02

8 Norms CEI 1-/8 - IEC72 - CENELEC HD kva Primary Voltage 20 kv Insulation level 2 kv BIL 95 kv Secondary Voltage V Insulation level 1,1 kv / K Class E2 - C2 - F1 CESI certificate No 98/ issued on NORMAL LOSSES 20 kv NORMAL LOSSES kva Uk% P0 (W) I0% Pressure level Power level at 1m , , ,7 51 1, , , , , , Transformer's size and weight, page 9; Enclosure's size and weight, page , Technical Data page 7 ed. 01/03/02

9 Norms CEI 1-/8 - IEC72 - CENELEC HD kva Primary Voltage 20 kv Insulation level 2 kv BIL 95 kv Secondary Voltage V Insulation level 1,1 kv / K Class E2 - C2 - F1 CESI certificate No 98/ issued on REDUCED LOSSES Pressure level Power level at 1m kva Uk% P0 (W) I0% kv REDUCED LOSSES , , , ,2 59 1, , , Transformer's size and weight, page 9; Enclosure's size and weight, page 10 0, , Technical Data page 8 ed. 01/03/02

10 Size and weight - class 2kV kva Uk% Le Wi He If Ic ØR E F G H M kg (mm) (mm) (mm) (mm) (mm) (*) (*) (*) Technical Data page 9 ed. 01/03/

11 Size and weight for integral enclosure Protection degree IP21 - IP31 - IP23 KVA Lenght (mm) Height Width S Weight (mm) (mm) (mm) kg Technical Data page 10 ed. 01/03/02

ABB PTTR SPAIN. Zaragoza. The product: Cast coil transformers

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