WCL488 Series Water Cooled Electronic Loads
Operation & Programming Manual
TDI-Dynaload Division
Page 40
402828, Rev. B1
WCS Rear Panel Electrical Connections
All electrical and electronic connections are made on the unit’ s rear panel and are detailed below
in
Figure 20. WCS Rear Panel Detail
WCS E+ and E– Power Input Buses
Referring to Figure 20, the main DC power inputs are labeled E+ and E– and are the power input
buses for connecting the power source to be monitored or tested. The E+ and E– power inputs are
the two sets of two mounting holes (and related hardware) found on each of the two input buses
located on the left side of the rear of the unit. The input buses are separated by an insulator for
safety and require lugs with a 7/16-inch diameter hole.
CAUTION:
Only the power source-to-load connections are to be made to these buses.
Always be sure these connections are securely tightened. A loose connection
will result in a high temperature at the connection.
WCS E+ and E– Wiring Tips
It is the best practice to join the power buses together and run a single conductor set from the
“ ganged” inputs to the source under test. The external DC disconnect relay should be installed
between the “ ganged” positive input and the positive output of the source under test.
25
0V
HIGH
CURRENT
T IGHT EN
SECURELY
AC
SELECT
F3
.1
5A
OFF/ ON
UV
FLUID
OUT LET
RELAY
FLUID
INLET
GND
A
3
SLAVE
ADDR
O
N
A
0
A
2
A
1
A
9
A
8
A
7
A
6
A
4
A
5
SLAVE
COMMUNICATION
402828-02-14.C D R
AC input
Slave com m unication connector
U V sw itch
Input voltage selector
G round connection
Fuse (fuse holder show n rem oved)
R elay connector
E+ input bus (tw o m ounting holes)
E– input bus (tw o m ounting holes)
