SEW-Eurodrive MOVITRAC LTP-B User Manual

4
Installation
Electrical installation
Operating Instructions – MOVITRAC
®
LTP-B
27
4.4.4 Operation on an IT system
IP20 devices can be operated on the IT system as described below. The IT system
version without Filter LTP-B...-15 should be used for the 3×380–480V devices in
the unit design IP55/IP66. Please contact SEW‑EURODRIVE for all other devices.
For operation on the IT system, the connection of the overvoltage protection and the
EMC filter to PE has to be separated. Screw out the EMC and VAR screw on the side
of the device.
WARNING
Danger of electric shock. Dangerous voltage levels may still be present inside the in-
verter and at the terminals up to 10minutes after disconnection from the supply sys-
tem.
Severe or fatal injuries.
• Disconnect the inverter from the power supply at least 10 minutes before you
screw out the EMC and VAR screw.
[1]
[2]
3034074379
[1]
EMC screw
[2]
VAR screw
L3
N/L2
L/L1
Internal
EMC
Filter
Internal
Surge
Protection
Earth
EMC
VAR
9007204745593611
SEW‑EURODRIVE recommends using insulation monitors with pulse-code measure-
ment in voltage supply systems with a non-grounded star point (IT systems). Use of
such devices prevents false tripping of the insulation monitor due to the earth capacit-
ance of the inverter.
25813137/EN – 08/2018

SEW-Eurodrive MOVITRAC LTP-B Specifications

General

Brand	SEW-Eurodrive
Model	MOVITRAC LTP-B
Category	DC Drives
Language	English