C-1 72A-2337-01 Rev. B 11/05
Appendix C. Source Configurations
This appendix explains the configuration of power sources for the F6300 Instrument. Source
configuration is set from ProTesT to meet protection scheme test requirements.
Current Sources
The F6300 has two banks of three current sources, each rated at 150 VA. The current ranges for
the 150 VA sources are 7.5, 15, and 30 A. The three current sources on a bank can be paralleled
to create a 450 VA source. The current ranges for the 450 VA sources are 7.5, 22.5, 40 and 90 A.
The current sources can be placed in transient current mode to increase the output power by
50% and the current range by 100% for 1.5 seconds. When in transient current mode, the 150
VA sources supply 225 VA for 1.5 seconds.
Rules for Source Selection
The F6300 software supports a maximum of six 150 V sources and two 450 VA sources at a time.
NOTE When using paralleled current sources, it is recommended to parallel the wiring in order to
reduce cable heating and voltage drop.
Compliance Voltage and Current Range
The compliance voltage of a current source is the highest voltage into which the current source
can inject current. The formula for calculating the compliance voltage of a current source is:
V = P
÷
I
where:
• P is the VA rating of the current source
• I is the current range.
For example, if a source is rated at 150 VA and the current range is set at 7.5 A, the compliance
voltage for the source is 20 V.
NOTE For maximum power, use the lowest current range that can produce the desired test current.
For example, if the test requires 5
A, set the range at 7.5 A, not 15 A.
Table C.1 and Table C.2 show range settings and compliance voltages for all common source
configurations. See Appendix E ”F6300 Specifications” for more information on range settings.
To Next Page
Loading...
