Bexen Reanibex 700, Technical Manual

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TECHNICAL MANUAL DGG 700 B
135
Next, the SCR_2 is tested. Only the iGBT-s are connected (HV_IGBT4 and HV_IGBT44
to 1) and the SCR_2 is kept open. If it is discharged the error 63 is returned and the test is
finished. If there has been any error, both the iGBT-s (HV_IGBT4 and HV_IGBT44 to 1)
and the SCR (HV_SCR2 to 1) are connected and it is tested is there is a discharge. If there
is no discharge, the error 63 is returned and the test is finished.
•
iGBT-s Test:
The first branch is closed (HV_IGBT3, HV_IGBT33 and HV_SCR1 to 1) and the second
one is opened (HV_IGBT4, HV_IGBT44 and HV_SCR2 to 0). The oscillator is switched
on, and the discharge is being carring out is checked. Then the iGBT3 is opened
(HV_IGBT3 to 0) and that there is no discharge is checked. If there has been any error, the
error 64 is returned and the test is finished. The same process is repeated for the iGBT33. If
there is an error, the error 65 is performed and the test is finished.
All the semiconductors are opened and the branch is changed (HV_IGBT3, HV_IGBT33
and HV_SCR1 to 0 // HV_IGBT4, HV_IGBT44 and HV_SCR2 to 0). The iGBT4 and the
iGBT44 are tested. The corresponding errors are error 66 and error 67.
•
Time protection Test.
Alarms are restarted (positive pulse in HV_REARM) , a virtual discharge of 50 msecs is
performed (HV_SHOCK to 1 and the oscillator is switched on) and the time alarm is
checked . If the alarm does not produce between 20 and 30 milliseconds, the error 42 is
returned because it should trip after 24 msec. Alarms are restarted, the discharge resistor is
disconnected and the test result is returned.
Finally, the main capacitor is discharged, all the semiconductors are opened, the test resistor
is disconnected, the discharge resistor is connected and the15V source is switched off.
Pacemaker Test
If this option is not included the equipment advises the user and finishes the test.
If the option is included, the pacemaker is connected to the internal resistor, and the relays
control signal as configured as follow: (STG_1 to 0, STG_2 to 1, STG_3 to 0). The Flyback
source is activated using the control signals (PMK_ION and PMK_FLYBACK to 1).