IP55 devices

The IT system conversion with degree of protection IP55 is only possible for the following devices:

  • LTP-B 2000-5A3-4-10 (3 × AC 380 to 480 V with 200 kW)
  • LTP-B 2500-5A3-4-10 (3 × AC 380 to 480 V with 250 kW)

On size 8, unscrew the screws [1], [2], and [3] in the terminal box under the middle front cover.

[1]

VAR

[2]

EMC DC

[3]

EMC AC

SEW‑EURODRIVE recommends using the insulation monitor with pulse-code measurement in voltage supply systems with a non-grounded star point (IT systems). This prevents a false tripping of the insulation monitor due to the earth capacitance of the inverter.