Operation and Application
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⚫ CR+CC Mode
In CR+CC mode, it has to program the constant resistance and constant current
first and then start the UUT for output. When the UUT voltage starts to output,
the Load will sink in CR mode according to the programmed resistance. When
the voltage rises to exceed the set constant current for sinking, it will switch to
CR mode for sinking.
The CR+CC mode is commonly used in the testing of voltage limiting, current
limiting characteristics, constant voltage accuracy, and constant current
accuracy of on-board chargers, which prevents over-current protection of on-
board chargers.
⚫ CP+CV
In CP+CV mode, it has to program the constant power and constant voltage first
and then start the UUT for output. When the UUT voltage starts to output, the
Load will sink in CV mode according to the programmed voltage. When the
voltage rises to exceed the set constant power for sinking, it will switch to CP
mode for sinking.
The CP+CV mode is often used to UPS battery test, simulate the current change
when the battery voltage is decaying. It can also be used to simulate the
characteristics of the inputs of DC-DC converters and inverters.
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