39
S280-77-4
!
SAFETY
FOR LIFE
Time–Current Curve Modifiers (cont’d)
Security
Limits
Access
Factory
Code
Write
Read
Scroll
High
Low
Incr
Parameter
Settings
111
1
0
YES
--
--
--
TCC2 Selection-Phase
117
111
1
0
YES
--
--
--
TCC2 Selection-Ground
135
•
Allows the selection of a programmed, fast or
delayed, time–current curve to be modified. In most
situations, TCC2 is designated as a delayed or slow
curve.
•
Use the PHASE/GROUND key to select phase or
ground TCC2.
•
When TCC characteristics are modified, the readout
of Code 111 will indicate a modified curve by prefix-
ing the TCC with a lower case “c”.
•
Access Codes 111 or 03 can be used to examine
TCC2.
•
Changes to Access Code 111 automatically update
Access Code 03.
•
Changes to Access Code 03 automatically update
Access Code 111.
Security
Limits
Access
Factory
Code
Write
Read
Scroll
High
Low
Incr
Parameter
Settings
112
1
0
YES
0.20
0.00
0.01 TCC2 Constant Time Adder-
0.00*
Phase (seconds)
112
1
0
YES
0.20
0.00
0.01 TCC2 Constant Time Adder-
0.00*
Ground (seconds)
•
Modifies the programmed TCC2 to delay the time of
overcurrent trip.
•
Use with the PHASE/GROUND key to modify phase
or ground TCC2.
*
Default setting when TCC2 is changed from Access
Code 03 (key 3).