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Procedure 11 - Calibrating the meter
Step
1
2
3
4
5
6.4.
Resetting the rectifier after an HVSD ( high voltage shutdown )
To reset the rectifier after an HVSD condition has occurred execute one of
the steps contained in Procedure 12.
Procedure 12 - Resetting the rectifier after a high voltage shutdown
Step
Locally
1
Remotely
2
Emerson Energy Systems
Make sure the remote sense leads are disconnected by removing
the corresponding RC fuse from the controller.
Set the VOLT/AMP switch to AMP. Set the output load of the plant
so the rectifier delivers a current of approximately 100 A. Measure
the voltage between VOUT+ and VOUT , located on the front panel,
with a digital meter.
Convert this measured voltage to a current value ( 50 mV
corresponding to 250 A ).
If the voltage measured is 20.2 mV :
measured current
Rotate the CUR CAL potentiometer on the display panel until this
value is displayed.
Put the VOLT / AMP switch to VOLT. Adjust the V CAL
potentiometer so that the reading displayed on the meter of the
rectifier is identical to the reading on the digital meter.
Put the rectifier to OFF and reconnect the sense leads.
Action
Toggle the ac circuit breaker on the unit itself, or the associated ac
breaker in the distribution panel OFF and ON ( wait until the green ac
ON LED extinguishes before toggling the breaker back to ON ).
Apply a ground signal at the HVSDR input of the rectifier.
Rectifier 200I/48 NT5C05C Installation and User Manual
Action
current =
250 A
voltage
50 mV
=
250 A X ( 20.2 mV ) = 101 A
50 mV
end
end
Maintenance 51
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