Ametek SEQUOIA Series - Output Connections

Sequoia / Tahoe Series User Manual California Instruments
48 M447352-01 REV-A
CAUTION!
If any Sequoia/Tahoe system failure has occurred on any part of the system, AC input power
must be removed immediately and not restored until the system has been inspected by a
qualifier service technician. Always turn off the On/Off Push Button before re-applying AC
input power.
CAUTION!
Under no circumstances should AC input power be applied if one or more of the AC input
line fuses have failed and opened.
3.7 Output Connections
3.7.1 Output Wiring
The output terminal blocks, TB1A and TB1B are located at the rear of the unit. See Figure 3-9 for details.
Three-phase output line connections are made to terminal block TB1A. The phase outputs are labeled A,
B, and C. The neutral connection (if needed) can be made on terminal block TB1B. The model used of
Sequoia/Tahoe with single-phase capability, the single-phase A output connection is available on TB1B
as well. Note that the neutral for either single or three-phase mode is always located on TB1B. The neutral
connection is always required for single-phase output mode and may be used if needed for the Equipment
Under Test for all three-phase output modes.
WARNING!
In eLoad three-phase mode of opertaion, Neutral connection is mandatory. Neutral from the
output of UUT must be connected to the output neutral of the Sequoia.
In Grid Simulator three-phase mode of operation Netural connection is optional.
The external sense inputs allow the power system output voltages to be monitored directly at the load and
must be connected at EXT SENSE (External sense connector) when the sense is programmed for external.
The external sense input does not have to be connected when Internal Sense is programmed. The external
sense wires are to be connected to the EXT SENSE (External sense connector) on the rear panel and
should be run using a twisted shielded cable. See Figure 3-12 for the location of EXT sense and Figure
3-8.
CAUTION!
For External Sense connection, a shielded cable MUST be used with the shield connected
to chassis ground at the Ext. Sense connector.
External sense is recommended if the output wiring from the cabinets to the common output terminal block
supplied is not of equal length.