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1 Quick Reference
Inductive Load Boundary for Constant Current (CC) Operation
The following figures show the boundary limitations for inductive loads with equivalent series
resistance (ESR) for constant current operation. Operation below the red marginal stability lines may
result in output instability. Note that lead and DUT resistance and inductance are indistinguishable in
this context. It is also important to consider the voltage drop and power dissipation in the leads from
increased lead resistance. Refer to
EQUIPMENT DAMAGE The power supply's internal voltage clamps are susceptible to
thermal damage when the output is abruptly turned off at full load current if the lead
inductance exceeds the model-dependent
For 20 kW Models RP7971A, RP7972A, RP7973A
Inductive Load Boundary (500 V units)
Inductive Load Boundary (1 kV units)
1. The output is stable in this region
2. The output may overshoot in this region
3. The output may be unstable in this region
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Inductance Considerations
Keysight RP7970 & RP7980 Series Operating and Service Guide
for details.
Maximum Load Inductance
Inductive Load Boundary ( 2 kV units)
characteristic.
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