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Installation and connection
21
PEM735_D00084_00_M_XXEN/02.2015
4.4 Connection of the device
4.4.1
Safety information
4.4.2
Back-up fuses
Back-up fuse supply voltage:
6 A
Short-circuit protection
Protect the measuring inputs according to the require-
ments of the standards. (Recommendation: 2 A). A suitable isolation means must
be provided. For details refer to the operating manuals of the measuring current
transformers currently used.
4.4.3
Connection of measuring current transformers
When connecting the measuring current transformers it is important to consider
the requirements of DIN VDE 0100-557 (VDE 0100-557) –
Low voltage installations - Part 5: Selection and erection of electrical equipment -
Section 557: Auxiliary circuits.
4.5 Instructions for connection
Connect the PEM575 to the supply voltage (terminals A1 and A2 resp. +/-). Con-
nect terminal "
" to the protective conductor.
Power protection by a 6 A fuse, quick response. If being supplied from an IT sys-
tem, both lines have to be protected by a fuse.
Connection to the RS-485 bus is made via the terminals D+, D- and SH. Up to 32
devices can be connected to the bus. The maximum cable length for the bus con-
nection of all devices is 1200 m.
Danger of electric shock!
Follow the basic safety rules when working with electricity.
Consider the data on the rated voltage and supply voltage
as specified
in the technical data!
If the supply voltage U
s
is supplied by an
IT system
,
both lines are to be
protected
.
DANGER
Summary of Contents for LINETRAXX PEM575 Series
Page 8: ......
Page 12: ...Making effective use of this document 12 PEM735_D00084_00_M_XXEN 02 2015 ...
Page 28: ...Installation and connection 28 PEM735_D00084_00_M_XXEN 02 2015 ...
Page 62: ...Application inputs and outputs 62 PEM735_D00084_00_M_XXEN 02 2015 ...
Page 82: ...Logging 82 PEM735_D00084_00_M_XXEN 02 2015 ...
Page 88: ...Power Quality 88 PEM735_D00084_00_M_XXEN 02 2015 ...
Page 162: ...Modbus Register Map 162 PEM735_D00084_00_M_XXEN 02 2015 ...
Page 166: ...Technical data 166 PEM735_D00084_00_M_XXEN 02 2015 ...
Page 170: ...INDEX 170 PEM575_D00016_00_M_XXEN 04 2015 ...
Page 171: ......