Chapter 4. WIRING
4-5 Power Supply and Grounding
■
Power supply
To supply power to the DCP551, use an instrument-dedicated single-phase power sup-
ply subject to minimal electrical interference.
HANDLING PRECAUTIONS
• If electrical interference proves excessive, we recommend adding an insulat-
ing transformer and/or using a line filter.
model No.:
81446364-001
• After carrying out interference reducing measures, do not bundle the primary
and secondary power supply coils together or insert them in the same conduit
or duct.
■
Grounding
If grounding the shield wire or other lines proves difficult, ground them separately to a
grounding terminal block.
Type
: Less than 100
Ω
Conductor
: Annealed copper wire, min. 2mm
2
(AWG14)
Max. Length
: 20m
HANDLING PRECAUTIONS
To ground the DCP551, connect the FG terminal (terminal (52) or (53) to a sin-
gle ground point without jumpering.
,+2##
!"#$
"
"
%&' &
% ( )
* '
* '
+,!!
*-+
!
.
!
4-6
