AMETEK SLM Series Rev B - Manual (Page 25)

SLM-Series AC/DC Load Installation
M540072-01 Rev B 2-3
2.3 CONNECTIONS
CAUTION: PREVENT DAMAGE TO THE LOAD. Do NOT apply voltage or current
with power switched OFF. Turn ON the power switch to the load PRIOR to applying
voltage or current to the input terminals (i.e., before turning on the power supply
under test).
2.3.1 Input Binding Post and Wire Considerations
The output of the device under test (DUT) can be connected to the load by one of
five methods, each described in the following subsections. Connect he positive (+)
and negative (-) binding posts to the wires/cables according to the following
guidelines. A major consideration in making input connection is the wire size. The
minimum wire size is required to prevent overheating and to maintain good
regulation. It is recommended that the wires be large enough to limit the voltage
drop to less than 0.5V per lead.
Note: When using Constant Resistance mode, Vsense inputs should be used to
avoid cable resistance from affecting measurements and regulation.
Plug Connectors
This is the most common way to connect the input of electronic load to the device
under test. It is recommended the load current be less than 20A in this
connection since the current rating of the plug is rated to 20A. The maximum wire
gauge should be limited to AWG14.
Hook Terminals
The SLM-Series AC/DC Electronic Load attachments include two (2) hook-type
terminals for connecting the equipment to be measured with the wire of the AC
electronic input connector. The hook terminal provides a good contact to the
binding post and can be used anytime. The maximum wire gauge should be
limited to AWG10.
Direct Insertion into Binding Posts
This is the simplest way to connect the load input to the DUT. The maximum wire
gauge AWG14 can be used in this application.
Plug Connectors and Hook Terminals
This method is recommended when input current is greater than 20A, because it
provides higher current rating and lower impedance of the connecting wire.
Plug Connectors and Direct Insertion
This method is also recommended when input current is greater than 20A or
when the connecting lead wire is longer.