9 Commissioning
(continued)
9-6
C232-302-401/402/403/404-603 / C232/EN M/A23
Checking the protection
function
Four parameter subsets are stored in the C232, one of which is activated. Before
checking the protective function, the user should determine which parameter subset is
activated. The activated parameter subset is displayed at PSS: Actual param.
subset ('Oper/Cycl/Log/" folder).
Testing the definite-time
overcurrent protection
function
Testing of the definite-time overcurrent protection function can only be carried out if the
following conditions are met:
DTOC protection is enabled. This may be interrogated at the logic state signal
DTOC: Enabled (‘Oper/Cycl/Log/’ folder).
The function MAIN: Block tim.st. IN,neg is set to No (folder Par/Func/Gen).
The function MAIN: Gen. starting mode is set to ‘Starting IN, Ineg’ (folder
Par/Func/Gen).
By applying appropriate measuring variables, the overcurrent stages and the associated
timer stages can be tested.
!
Application of analog signals to the measuring inputs must be in compliance with the
maximum permissible rating of the measuring inputs (see the Chapter on Technical
Data).
Testing the inverse-time
overcurrent protection
function
Testing of the inverse-time overcurrent protection function can only be carried out if the
following conditions are met:
IDMT protection is enabled. This may be interrogated at the logic state signal
IDMT: Enabled (folder ‘Oper/Cycl/Log/’).
The function MAIN: Block tim.st. IN,neg is set to No (folder Par/Func/Gen).
The function MAIN: Gen. starting mode is set to ‘Starting IN, Ineg’ (folder
Par/Func/Gen).
By applying appropriate measuring variables, the overcurrent stages and the associated
time delays can be tested.
!
Application of analog signals to the measuring inputs must be in compliance with the
maximum permissible rating of the measuring inputs (see the Chapter on Technical
Data).
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