Preparation; Terminal Designation; Selecting Cables; Connecting The Grounding Conductor - Siemens SIMOTICS FD 1LH1 Operating Instructions & Installation Instructions

6.4

Preparation

6.4.1

Terminal designation

According to IEC / EN 60034‑8, the following basic definitions apply to the terminal
designations for 3-phase machines:
Table 6-1
1
x
6.4.2

Selecting cables

Take the following criteria into account when selecting the connecting cables:
● Rated current
● Rated voltage
● If required, service factor
● System-dependent conditions, such as ambient temperature, routing type, cable cross-
● Configuration notes
● Requirements according to IEC/EN 60204‑1
● Dimensioning for bundled cable routing, e.g. according to DIN VDE 0298 Part 4 or
6.4.3

Connecting the grounding conductor

The grounding conductor cross-section of the motor must be in full conformance with the
installation specifications, e.g. in accordance with IEC 60034-1.
SIMOTICS FD 1LH1
Operating Instructions 01/2019
Terminal designations using the 1U1-1 as an example
U 1 - 1 Designation
Index for pole assignment for pole-changing machines where applicable. A lower
index signifies a lower speed. Special case for split winding.
x Phase designation U, V, W
x Index for winding start (1) or end (2) or if there is more than one connection per
winding
x Additional indices for cases in which it is obligatory to connect parallel power feed
cables to several terminals with otherwise identical designations
section as defined by required length of cable, etc.
IEC 60364-5-52
External conductor cross-section S
mm²
35
50
70
95
Electrical connection
Grounding conductor cross-section
mm²
25
25
35
50
6.4 Preparation
83