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	more info	+
DOTML	100	130	1250	4	1010	695	1130	950	more info	+
DOTML	160	189	1750	4	1070	720	1210	1060	more info	+
DOTML	250	270	2350	4	1140	765	1290	1410	more info	+
DOTML	400	387	3250	4	1230	820	1490	1850	more info	+
DOTML	630	540	4600	4	1340	850	1550	2650	more info	+
DOTML	800	585	6000	6	1470	910	1600	3000	more info	-
DOTML	1000	693	7600	6	1550	980	1650	3530	more info	+
DOTML	1250	855	9500	6	1550	1040	1650	3650	more info	+
DOTML	1600	1080	12000	6	1790	1080	1800	4850	more info	+
DOTML	2000	1305	15000	6	1920	1270	1900	5500	more info	-
DOTML	2500	1575	18500	6	1950	1270	2510	6500	more info	+
DOTML	3150	1980	23000	6	2130	1300	2550	7900	more info	+

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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