Power Equipment

Transformer Models & Specifications

Typical values from our standard catalogue; final specifications are confirmed in the technical offer.

What We Supply

Oil-Immersed Transformer

10/11 kV: 20–2500 kVA · 35 kV: 50–20000 kVA

Sealed-tank distribution transformers for outdoor pole/pad-mount installation.

Dry-Type Transformer

10/11 kV: 30–2500 kVA

Cast-resin transformers for indoor, fire-sensitive or maintenance-light sites.

Switchgear

RMU & LV panel · up to 35 kV

Ring main units and low-voltage panels to pair with your transformer order.

Series at a Glance

SeriesTypeVoltage classCatalogue tableVector group
S11Oil-immersed10/11 kV30–1600 kVADyn11 / Yyn0
S13Oil-immersed10/11 kV30–1600 kVA (loss grades G1 / G2)Yyn0 / Dyn11
SCB10 · SCB11 · SCB12 · SCB13Dry-type (cast-resin)10 kV160–2500 kVAD,yn11 / Y,yn0
SZ11Oil-immersed, on-load tap-changing35 kV50–20000 kVA—
S18 · S22 · SCB14 · SCB18Factory programme—Contact us—

Specification Tables

S11 · oil-immersed · 10/11 kV class
Rated capacity (kVA)No-load loss (W)Load loss (W)Short-circuit impedance (%)No-load current (%)Vector group
3010063042.3Dyn11 / Yyn0
5013091042.0Dyn11 / Yyn0
80180131041.9Dyn11 / Yyn0
100200158041.8Dyn11 / Yyn0
160280231041.6Dyn11 / Yyn0
200340273041.5Dyn11 / Yyn0
250400320041.4Dyn11 / Yyn0
315480383041.4Dyn11 / Yyn0
400570452041.3Dyn11 / Yyn0
500680541041.2Dyn11 / Yyn0
63081062004.51.1Dyn11 / Yyn0
80098075004.51.0Dyn11 / Yyn0
10001150103004.51.0Dyn11 / Yyn0
12501360120004.50.9Dyn11 / Yyn0
16001640145004.50.8Dyn11 / Yyn0

Rated capacity 30 – 1600 kVA. Dyn11 and Yyn0 are both available. Rated capacity 20–2500 kVA is standard. The table lists the ratings with catalogue data; other standard ratings are confirmed in the technical offer.

S13 · oil-immersed · 10/11 kV class
Rated capacity (kVA)No-load loss (W)Load loss (W) — G1: Grade-1 · G2: Grade-2Short-circuit impedance (%)No-load current (%)Vector group
3080G1 550/480 · G2 630/60041.4Yyn0 / Dyn11
50100G1 730/695 · G2 910/87041.2Yyn0 / Dyn11
63110G1 870/830 · G2 1090/104040.97Yyn0 / Dyn11
80130G1 1050/1000 · G2 1310/125040.97Yyn0 / Dyn11
100150G1 1265/1200 · G2 1580/150040.97Yyn0 / Dyn11
125170G1 1510/1440 · G2 1890/180040.84Yyn0 / Dyn11
160200G1 1850/1760 · G2 2310/220040.84Yyn0 / Dyn11
200240G1 2185/2080 · G2 2730/260040.74Yyn0 / Dyn11
250290G1 2560/2440 · G2 3200/305040.64Yyn0 / Dyn11
315340G1 3065/2920 · G2 3830/365040.64Yyn0 / Dyn11
400410G1 3615/3440 · G2 4520/430040.54Yyn0 / Dyn11
500480G1 4330/4120 · G2 5410/515040.54Yyn0 / Dyn11
630570G1 4960 · G2 62004.50.54Yyn0 / Dyn11
800700G1 6000 · G2 75004.50.48Yyn0 / Dyn11
1000830G1 8240 · G2 103004.50.42Yyn0 / Dyn11
1250970G1 9600 · G2 120004.50.36Yyn0 / Dyn11
16001170G1 11600 · G2 145004.50.36Yyn0 / Dyn11

Rated capacity 30 – 1600 kVA. No-load loss Grade-1 and Grade-2 are identical in the factory data; load loss is shown as G1 · G2 (Grade-1 / Grade-2). For ratings up to 500 kVA each pair is upper = Dyn11, lower = Yyn0. Rated capacity 20–2500 kVA is standard. The table lists the ratings with catalogue data; other standard ratings are confirmed in the technical offer.

SCB10 · dry-type · 10 kV class
Rated capacity (kVA)No-load loss (W)Load loss (W)Short-circuit impedance (%)Vector group
16054021304D,yn11 / Y,yn0
20062025304D,yn11 / Y,yn0
25072027604D,yn11 / Y,yn0
31588034704D,yn11 / Y,yn0
40098039904D,yn11 / Y,yn0
500116048804D,yn11 / Y,yn0
630 (Uk 4%)134058804D,yn11 / Y,yn0
630 (Uk 6%)130059606D,yn11 / Y,yn0
800152069606D,yn11 / Y,yn0
1000177081306D,yn11 / Y,yn0
1250209096906D,yn11 / Y,yn0
16002450117306D,yn11 / Y,yn0
20003050144506D,yn11 / Y,yn0
25003600171706D,yn11 / Y,yn0

Rated capacity 30–2500 kVA is standard. The table lists the ratings with catalogue data (160 kVA and above); other standard ratings are confirmed in the technical offer.

SCB11 · dry-type · 10 kV class
Rated capacity (kVA)No-load loss (W)Load loss (W)Short-circuit impedance (%)Vector group
16048021304D,yn11 / Y,yn0
20055025304D,yn11 / Y,yn0
25064027604D,yn11 / Y,yn0
31579034704D,yn11 / Y,yn0
40088039904D,yn11 / Y,yn0
500104048804D,yn11 / Y,yn0
630 (Uk 4%)120058804D,yn11 / Y,yn0
630 (Uk 6%)117059606D,yn11 / Y,yn0
800136069606D,yn11 / Y,yn0
1000159081306D,yn11 / Y,yn0
1250188096906D,yn11 / Y,yn0
16002200117006D,yn11 / Y,yn0
20002740144006D,yn11 / Y,yn0
25003240171006D,yn11 / Y,yn0

Rated capacity 30–2500 kVA is standard. The table lists the ratings with catalogue data (160 kVA and above); other standard ratings are confirmed in the technical offer.

SCB12 · dry-type · 10 kV class
Rated capacity (kVA)No-load loss (W)Load loss (W)Short-circuit impedance (%)Vector group
16043021304D,yn11 / Y,yn0
20049525304D,yn11 / Y,yn0
25057527604D,yn11 / Y,yn0
31570534704D,yn11 / Y,yn0
40078539904D,yn11 / Y,yn0
50093048804D,yn11 / Y,yn0
630 (Uk 4%)107058804D,yn11 / Y,yn0
630 (Uk 6%)104059606D,yn11 / Y,yn0
800121069606D,yn11 / Y,yn0
1000141081306D,yn11 / Y,yn0
1250167096906D,yn11 / Y,yn0
16001960117006D,yn11 / Y,yn0
20002440144006D,yn11 / Y,yn0
25002880171006D,yn11 / Y,yn0

Rated capacity 30–2500 kVA is standard. The table lists the ratings with catalogue data (160 kVA and above); other standard ratings are confirmed in the technical offer.

SCB13 · dry-type · 10 kV class
Rated capacity (kVA)No-load loss (W)Load loss (W)Short-circuit impedance (%)Vector group
16038519104D,yn11 / Y,yn0
20044522704D,yn11 / Y,yn0
25051524804D,yn11 / Y,yn0
31563531204D,yn11 / Y,yn0
40070535904D,yn11 / Y,yn0
50083543904D,yn11 / Y,yn0
630 (Uk 4%)96552904D,yn11 / Y,yn0
630 (Uk 6%)93553606D,yn11 / Y,yn0
800109062606D,yn11 / Y,yn0
1000127073106D,yn11 / Y,yn0
1250150087206D,yn11 / Y,yn0
16001760105006D,yn11 / Y,yn0
20002190130006D,yn11 / Y,yn0
25002590154006D,yn11 / Y,yn0

Rated capacity 30–2500 kVA is standard. The table lists the ratings with catalogue data (160 kVA and above); other standard ratings are confirmed in the technical offer.

SZ11 · 35 kV class on-load tap-changing oil-immersed
Rated capacity (kVA)No-load loss (W)Load loss (W)Short-circuit impedance (%)No-load current (%)
5018812106.51.8
10023220106.51.9
12527223806.51.7
16029828606.51.6
20034433306.51.5
25039839606.51.4
31547847806.51.3
40056457406.51.2
50069268806.51.1
63081082806.51.0
80094296406.50.9
10001150115206.50.8
12501390139606.50.7
16001670168606.50.6
20001940230006.50.8
25002300273006.50.7
31502680329007.00.7
40003240389007.00.6
50003870464007.00.6
63004560562007.50.6
80004810707007.50.5
100005860832007.50.5
1250068809840080.5
16000702013170080.4
20000827015570080.4

Rated capacity 50 – 20000 kVA. Short-circuit impedance follows the factory data.

Other series in the factory programme: S18, S22, SCB14, SCB18.

Can I Get a Rating That Is Not Listed?

Yes, most capacities and voltage combinations within our stated ranges can be produced within a similar production time. Send us your spec and we will confirm.

Send your specifications

Voltage ratio, vector group, capacity and destination.

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