Device type
Realizable
THD of mains
current
Realizable dis‐
tortion factor of
mains current
Supply unit or drive controller
with and without mains choke
All devices
THD ≥ 50%
K ≥ 60%
HMV01.1E
HMV02.1E
HCS03.1
HCS02.1
Without
Devices with
mains choke
THD < 48%
K < 45%
HMV01.1E
HCS03.1
HCS02.1
HNL01.1
Devices with
Power Factor
Control (PFC)
THD < 13%
K < 12%
HMV01.1R
HMV02.1R
HNL01.1
HNL02.1
Tab.7-5:
Realizable THD / Distortion Factor for Drive Controllers
The allowed distortion factors can be achieved with the indicated
combinations of drive controller and mains choke.
Observe the assignment of mains choke to drive controller in
the Project Planning Manual "Rexroth IndraDrive Supply Units
and Power Sections" → Chapter of the respective device → "Tech‐
nical Data" → "Basic Data" → table "Data for Mains Voltage Sup‐
ply".
For detailed information on the emitted harmonics, see this Project Planning
Manual in the chapter
15.2.3 Calculations for the Mains Harmonics, page
.
Selecting Mains Connection Com‐
ponents
Procedure for selecting the required mains supply units and, if necessary,
mains choke:
1.
Determine maximum current of mains connection at place of destination
of application.
2.
Determine mains short-circuit power S
k
of mains at place of destination
of application (ask power supply company).
3.
Determine sum of connected loads S
A
.
4.
Determine ratio R
SC
.
5.
Read allowed THD or distortion factor K of mains current at place of
destination of application from table "Allowed THD...".
6.
Select appropriate mains supply unit and mains choke HNL from table
"Realizable THD...".
7.5
Protection Systems at the Mains Connection
7.5.1
General Information
Protection against contact always depends on the kind and structure of the
supply mains and the mains conditions. For project planning of an installa‐
tion, the typical behavior of the devices and supply mains should always be
taken into account.
For protection against contact (indirect contact) in a machine or plant in which
a drive system is used, the overcurrent protective device normally used is
one with protective grounding according to IEC 364 and EN 50178 (Electron‐
Bosch Rexroth AG
DOK-INDRV*-SYSTEM*****-PR06-EN-P
Rexroth IndraDrive Drive Systems with HMV01/02 HMS01/02, HMD01, HCS02/03
84/309
Project Planning of Mains Connection
