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“ IR ” limp
Long time-delay overcurrent fault indicator
LED window
“ Ig ” limp
“ MENU ” Pushbutton
“ IR ” Knob switch
“ tR ” Knob switch
“ test ” Pushbutton
“ tsd ” Knob switch
“ Isd ” Knob switch
“ RESET ” Pushbutton
Return to previous menu; the intelligent controller software is reset;
RESET key must be pressed after the encoder switch position is adjusted;
the intellectual controller faulty tripping results in fault memory which
can be cleared only by pressing the RESET key;
LED window capable of showing the current for each phase, various setting parameters,
rated current, fault current, tripping time, and the like
Single-phase earthing fault indicator
“ Isd ” limp Short-circuit short time-delay overcurrent
“ Ii ” limp
Short-circuit instantaneous overcurrent fault indication
Successively access to submenus at various levels by pressing the MENU key
To inquire the current for each phase at present:
recurrently select the contents in the menus at various levels
There are (0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 0.95, 0.98, 1.0)In,
nine settings altogether, for the current multiple setting of long time-delay overcurrent.
There are (1, 2, 4, 8, 12, 16, 20, 24, 30)s, nine settings altogether,
for the time delay time setting of long time-delay overcurrent in case of 6IR.
There are (1.5, 2, 2.5, 3, 4, 5, 6, 8, 10)Ir, nine settings altogether,
for the current multiple setting of short-time short time-delay.
For the short-circuit short time-delay time setting, there are nine settings:
2
the inverse time limit, i.e., I t on(0.1, 0.2, 0.3, 0.4)s, the definite-time limit,
2
i.e., I t OFF (0.1 0.2 0.3 0.4)s and X, i.e., closing the short time-delay
There are (A, B, C, D, E, F G, H, J), nine settings altogether, for the current multiple setting
of single-phase earthing.
Button for simulating instantaneous tripping test
For the time setting of single-phase earthing, there are nine settings: the inverse time limit,
2 2
i.e., I t on(0.1, 0.2, 0.3, 0.4)s, and the definite-time limit, i.e., I t OFF(0.1 0.2 0.3 0.4)s, and X,
i.e., closing the single-phase earthing.
Short-circuit instantaneous current multiple setting.
“ Ig ” Knob switch
“ tg ” Knob switch
“ Ii ” Knob switch
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7. Intelligent controller and protective characteristics
7.1 User interface of the standard type controller
Pushbutton
“ “
Air Circuit Breaker
NA8G
Air Circuit Breaker
P-024
NA8G
P-023
7.2 Default interface and operation method for the standard type controller
The default interface for the standard type controller is described as follows: (The current for each phase to be selected
by pressing "→")
Press "MENU"key once to go to the status for parameter query as follows, and then press"→"to go to query
the setting parameter of quadruple overcurrent protection.
Default interface of the standard type controller
Status for parameter query─setting current of long time-delay
Status for fault query─tripping current Status for fault query─tripping time
Status of simulating tripping test─simulating current
Status of simulating tripping test─simulating time
Press "RESET"key at any status to go back to default interface.
Press "TEST" key to go to the status for simulating tripping test in case of 6I , and after tripping as follows:
R
Press "MENU" key twice to go to the status for fault query as follows,show the latest fault information:
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