KEPCO BHK-MG 200W (Full Rack) Series - Manual (Page 105)

BHK-MG (OPR) 022014
3-61
c. Program overcurrent value of master unit (Iocset
M
) to 1.1 x Iset
M
(step 4a).
d. Program overvoltage value of master unit (Vovset
M
) to 1.1 x Vset
M
(step 4b).
5. To apply power to the load:
a. If load switch used, open the switch.
b. If load switch not used, press POWER ON/OFF key once on slave unit, then once on
master unit.
6. To disable power to the load:
a. If load switch used, close the switch.
b. If load switch not used, press POWER ON/OFF key once on master unit, then once on
slave unit.
c. Alternative: Turn both units off by setting POWER switch to off (down) position, first on
master unit, then on slave unit.
3.7.3 PARALLEL OPERATION
Kepco BHK-MG power supplies can be parallel-connected for increased output current, if the
precautions outlined below are followed. Two basic parallel-connection methods are generally
used: automatic (PAR. 3.7.2.1) and master-slave (PAR. 3.7.2.2).:
HANDLING HIGH VOLTAGE, LOW IMPEDANCE EQUIPMENT IS DANGEROUS, AND
POTENTIALLY LETHAL. OBSERVE ALL PRECAUTIONS LISTED IN PAR. 3.6.1., AS WELL
AS THE PRECAUTIONS LISTED BELOW.
a. Connect the chassis ground terminal, TB1-4, of all parallel-connected power supplies
to a good a-c ground (earth ground).
b. If necessary, the grounding network can be used for each one of the parallel-connected
power supplies (refer to PAR. 2.7.5.3 for additional information regarding use of the
grounding network).
c. The parallel combination of BHK-MG power supplies can operate either isolated from
ground (floating) or with either of the two output terminals of the parallel combination
grounded. When analog programming is used, however, it is recommended that the
positive output terminal of the parallel combination be grounded to avoid potentially
hazardous conditions requiring the use of fully insulated external equipment (see pre-
cautions of PAR. 3.6.1).
If the negative output terminal is grounded, special precautions are required when using
external programming sources: THE PROGRAMMING SOURCE MUST BE ISOLATED AND
INSULATED for the maximum output voltage of the parallel combination. The programming
WARNING