Dc distributor for a battery test bench

A test bench (2) for two-pole test objects (4), for the electrical testing of the test objects with the help of an electrical DC high power (UG) to be fed into and/or to be drawn from them, comprising:

• at least one energy source (12), wherein each energy source (12) contains a generator (14) for an alternating voltage (UW) and an inverter (16) connected to the generator (14), which on its side facing away from the generator (14) comprises a first two-pole DC-voltage interface (18);
• a plurality of two-pole test stations (20) for one of the test objects (4), wherein each test station (20) contains a resonance converter (22) with a second two-pole DC-voltage interface (26) and a step-down converter (24) connected to the resonance converter (22), which on its side facing away from the resonance converter (22) has a two-pole DC-voltage connection terminal (28) for the test object (4) concerned;
• and
• a modular DC-voltage bus (30) which consists of a series circuit of at least two uniform distributors (34);
• wherein each of the uniform distributors (34) contains a two-pole bus bar (32) configured to be connected in series and at least two two-pole branches (36) connected to the bus bar (32), which lead from the bus bar (32) to a respective third two-pole DC-voltage interface (38), wherein each of the branches (36) contains a two-pole isolator switch 940),
• wherein each of the first (18) and second (6) DC-voltage interfaces is connected, respectively, to one of the third DC-voltage interfaces (38).