Product Selection

Type Capacity (kVA) Po (Watt) PK (Watt) uk (%) Length (mm) Width (mm) Hight (mm) Total weight (kg) Detail Info  start request
DOTML 50 81 750 4 950 670 1100 710
DOTML 100 130 1250 4 1010 695 1130 950
DOTML 160 189 1750 4 1070 720 1210 1060
DOTML 250 270 2350 4 1140 765 1290 1410
DOTML 400 387 3250 4 1230 820 1490 1850
DOTML 630 540 4600 4 1340 850 1550 2650
DOTML 800 585 6000 6 1470 910 1600 3000
DOTML 1000 693 7600 6 1550 980 1650 3530
DOTML 1250 855 9500 6 1550 1040 1650 3650
DOTML 1600 1080 12000 6 1790 1080 1800 4850
DOTML 2000 1305 15000 6 1920 1270 1900 5500
DOTML 2500 1575 18500 6 1950 1270 2510 6500
DOTML 3150 1980 23000 6 2130 1300 2550 7900

Special equipment

Components and systems for neutral-point connection

Medium-voltage systems in Europe are largely operated as resonant-earthed systems. SGB offers a complete range of products for the necessary neutral-point connection:

  • Arc suppression coils
  • Fixed coils, off-circuit variable tapped coils as well as coils variable under load. The variable coils can be operated with the fitted electronic regulators and have an automatic mode.
  • Neutral electromagnetic couplers
  • Earthing transformers
  • Earth fault combinations consisting of neutral electromagnetic couplers and arc suppression coils.

 
In special cases the use of oil-immersed equipment is restricted due to environmental protection considerations. In these cases we use special synthetic or organic esters (e.g. Midel 7131).

Selection accessories

Monitoring devices

  • dial-type thermometer
  • temperature alarm device
  • magnetic oil-level indicator
  • pressure relief valve
  • Buchholz relay protection
  • hermetic protection block
  • dehydrating breather

Current transformers / thermal images can also be mounted on request.

Design variations

  • tap changer
  • outer and inner cone bushings
  • transformer terminals and covers
  • cable boxes
  • terminal boxes

Insulation liquids

  • mineral oil acc to DIN VDE 0370 Part 1
  • synthetic or organic ester (Midel 7131) acc to DIN VDE 0375 Part 1 resp. DIN EN 61099 (IEC 1099)

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