page 57
Industrial Power Corruptor Manual Rev 1.00
240V) for a single cycle.
Here is a complete list of reasons that the IPC may trip its main circuit breaker:
1. Overcurrent on any source or load phase conductor (see discussion on previous page)
2. Overvoltage between any pair of phases, or between any phase and neutral (see discussion above)
3. Inherent breaker trip curve (see red portion of curve on previous page)
4. Current on Source Protective Earth terminal exceeds 500mA AC
5. Current on Load Protective Earth terminal exceeds 500mA AC
6. Current on power cord ground terminal exceeds 500mA AC
7. “Panic” signal asserted on rear-panel BNC connector
8. One or more of the 31 main relays is stuck on
9. One or more of the 31 main relays is stuck off
10. Red “Off” mushroom-cap button pressed on front panel of IPC
11. Instrument power is removed, or turned off
12. Throughout the IPC’s start-up sequence
13. Failure of the IPC’s internal communication network between its Control Processor and any of the other five processors.
14. (If breaker motor-drive option is installed): more that 5 seconds have elapsed while trying to change the state of the
breaker to ON without succeeding.
The following events do not trip the main circuit breaker, but always immediately terminate any disturbance event:
1. Transformer temperature exceeds 80°C.
2. Bypass relay temperature exceeds 80°C.
3. IGBT-generated fault (either IGBT overcurrent shutdown, or damaged IGBT).
4. Event cancelled by user pressing either of the two fornt-panel “Stop” switches
5. No zero-crossing found on the source side of the selected event phase, after waiting at least 25 milliseconds.
6. One or more of the fuses on the IGBT snubber board is/are blown
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