Low frequency transmission line transformer

Low frequency long-distance line transformer for safe galvanic isolation

The SEDLBAUER standard transformer program largely meets the entire range of requirements of wireline communications technology in the field of anechoic interconnection of sub-elements of a complex system.

If special technical requirements cannot be covered by the standard transformer program, we also develop transformers according to customer specifications. We will be happy to advise you on planning and project design.

For fast and safe installation we offer complete solutions, e.g. consisting of cable termination cabinets and racks, pre-assembled, pre-wired and tested transformer bars or transformers pre-assembled on special mounting installation racks.

Field of application of transformers:

Exclusively wireline transmission technology – wherever adaptation has to be made with regard to the different characteristic impedances of individual line sections, where galvanic isolation of line sections has to take place or where so-called phantom circuits (multiple use of cable cores) have to be applied.

for matching balanced lines to coaxial cables

for termination of symmetrical underground or aerial cables

as low-pass filter (frequencies of near-end crosstalk are blocked)

for fork connection (coupling of a four-wire line with a two-wire line)

for power transmission

Specifications

Download Data Sheet Article No.	Type	Tension strength [kV]	Adjustment Z [Ohm]	Frequency [kHz]	Design
319686*	NFLÜ 321	6	600:600	0,3 – 3,4	01
300012* 300322**	NFLÜ 32	2	600:600	0,3 – 3,4	01 03
300632 300829	NFLÜ 32	6	600:600	0,3 – 3,4	01 03
304417**	NFLÜ 324	6	600:600 1200:600 600:1200	0,3 – 3,4	03
314404 311669	NFLÜ 327	2	600:600 1200:600 600:1600	0,3 – 3,4	01 03
301612	NFLÜ 32	20	1:1	0,01-3,4
314102**	NFLÜ 32	20	600:300	0,3 – 3,4	60
308277	NFLÜ	2	2000:5000	0,3 – 3,4	01
303534	NFLÜ	20	600:600	0,3 – 6	60
303364**	NFLÜ	2	500:675	0,3 – 3,4	01
303330**	NFLÜ	2	600:300	0,3 – 3,4	01
303348**	NFLÜ	2	600:1200	0,3 – 3,4	01
303313**	NFLÜ	2	600:600	0,3 – 3,4	01
303356**	NFLÜ	2	450:1200	0,3 – 3,4	01