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DPP2U SERIES
OPERATING MANUAL
P O W E R I N G T E C H N O L O G Y
Manual No. DPP2U-MAN Rev. 5
dpp2u-man-rev5-0719.indd
13.0 SETUP AND TESTING
13.1
It is not necessary to have the distribution panel mounted in a rack for initial testing.
This can be done on a bench. It is also not necessary to have loads connected to the
panel for this testing.
13.2
With the input power source off, connect the input wires to the A side of the
distribution panel. Connect ground to the chassis ground terminal. Set all circuit
breakers to on.
13.3
Turn on the input power source. The A side LED should be green. If it is red, one
of the circuit breaker is tripped. If the LED is off, there is no input power to the unit.
Check the output voltage at each set of output terminals with a digital voltmeter.
13.4
With the A side LED green, use an ohmmeter to check the Form C relay contact
outputs. On J4 measure the resistance between pins 1 and 2. This should read
“open”. Measure the resistance between pins 2 and 3. This should read “short”.
13.5
On the A side trip circuit breaker no. 1. The A side LED should turn red. On J4
measure the resistance between pins 1 and 2. This should read “short”. Measure the
resistance between pins 2 and 3. This should read “open”. Reset the circuit breaker.
13.6
On the A side check each succeeding breaker by tripping it, and verify that the LED
turns red. It is not necessary to recheck the Form C relay contacts.
13.7
Repeat the same tests of Sections 13.2 through 13.6 on the B side of the distribution
panel, use J3 to check the Form-C relay operation.
13.8
The distribution panel may now be connected to its intended application.
13.9
If the distribution panel did not operate properly in the above tests, go back and
double check the connections and the polarity of the input source to make sure it is
correct.
Please note that there are no user serviceable parts inside either the modules or the shelves
and that opening either will void the warranty.
