Argantix KDC 100-100, Руководство пользователя

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User Manual
KDC Series II DC Power Supplies 65
5.2.1.4 System Setup
To setup a parallel system, proceed as follows:
1. Turn on the line power first for the Master power source followed by each Auxiliary
source.
2. The Auxiliary Power Source Controller must be configured for that mode of operation. To
power up in this mode of operation press the MENU key several times until
CONFIGURATION is displayed. If necessary use the key to point the cursor to
CONFIGURATION and press ENTER. Repeatedly press the key to point the cursor to
CONTROL. Turn the Voltage encoder so AUX AP is displayed. Press ENTER key to save
this mode of operation. The unit(s) will retain this setting at power on.
3. Press the SET key to select the setup menu.
4. Repeatedly press the key until OVP MODE is displayed.
5. Turn the Voltage encoder until RANGE LEV is displayed. Make sure the value is 110%.
6. Set the programmed output voltage of the master unit to 0 VDC.
7. Apply the output of each Auxiliary source followed by the Master source using the Output
On/Off button on the front panel of each unit. Make sure that the output voltage stays at a
low value, less than 0.5% of full-scale voltage, after each Auxiliary source has the output
applied.
8. Apply a load and program a voltage on the Master unit.
5.2.1.5 Current Sharing
Note: If the Master and Auxiliary power supplies are not of the same power level (5, 10 or 15 KW)
a constant (Ratio R) must be determined for the full-scale current tracking of the Auxiliary power
source.
Ratio R = (Auxiliary maximum current)/ (Master maximum current)
For most power systems the model number of the Master and Auxiliary will be the same to the
value of R will be equal to 1. This would mean the current delivered by the supplies should be the
same
Under load, the full-load current from each Auxiliary source should match the full-load current
delivered by the Master within 5%. The current delivered by each Auxiliary supply must match the
current delivered by the Master times the constant R. For example if the constant is 2/3 when the
Master is delivering 100 amps the Auxiliary with the constant R should be delivering 66.66 amps.
In order to check the current sharing, slowly increase the output voltage of the Master source
while observing the load current supplied by each Auxiliary source. The Auxiliary sources will not
precisely track the current of the Master (the Master current times the value of R) at the lower
values of current.
If the auxiliary units were not shipped as
–AUX units, it may be necessary to adjust the current
sharing. To do so, increase the voltage until the total load current of the power system is equal to
the maximum current of the Master power source. Use R54 on the Controller Interface Board,
5005-722, in each Auxiliary source to adjust the load current contributed by the Auxiliary source
equal to that of the Master source times the value of R for the individual Auxiliary power source.