ABB SACE Emax 2 Series Operating Instructions Manual page 92

89 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
Continued from the previous page
Protection configuration is available in the Advanced menu (page 47)
Parameter Description
Activates/deactivates the protection and its availability in the
Enable
parameters menu
Activates/deactivates transmission of the open command: if
Trip Enable disabled, the alarm and exceedance of protection time are only
managed as information
Establishes curve dynamics and the threshold or trip time
calculation:
Curve
• t= k: fixed time trip
• t= k/I : inverse time-delay dynamic trip
2
Establishes the value that activates the protection and
contributes towards calculating the trip time.
Threshold I41 Value is given as both absolute value (Amperes) and relative value
(In, with reference to MDGF In Size parameter) and can be set
within a range: 0.1 In to 1 In, in 0.001 In steps
It is the trip time or contributes towards timing calculation,
depending on the type of curve selected.
The value is given in seconds and can be set within the range:
Time t41 • 0.05 s to 1 s, in 0.05 s steps for t=k
• 0.1 s to 1 s, in 0.05 s steps for t=k/I
NOTE: with CB in UL configuration, the maximum settable
value of t41 is 0.4 s
Warns that the measured current is near to the protection
activation threshold.
Value is given in percentage of MDGF In Size and can be set
Threshold I41
within the range of 50% I41 to 90% I41, in 1% steps.
The prealarm condition deactivates in two cases:
• current lower than prealarm threshold I41
• current higher than threshold I41
Activates/deactivates the function and selectivity time availability
on the display
NOTES :
• the function is only available with curve t = k
ZoneSelectivity
• if at least two of the selectivity G, Gext and MDGF are
enabled, the input and output are shared with the OR
function; it is sufficient that even a selectivity is activated to
stimulate inputs and outputs
This is the trip time of the protection with the zone selectivity
function activated and selectivity input not present
Selectivity time
The value is given in seconds and can be set within the range:
0.04 s to 0.2 s, in 0.01 s steps
Activates/deactivates the function and availability of the
StartUp enable
associated parameters on the display
Protection threshold valid during Startup time, in the conditions
in which the function is activated
StartUp
Value is given as both absolute value (Amperes) and relative value
Threshold
(In, with reference to MDGF In Size parameter) and can be set
within a range: 0.2 In to 1 In, in 0.1 In steps
This is the time for which the StartUp threshold remains
activated and is calculated from the moment the activation
StartUp Time Threshold is exceeded
The value is given in seconds and can be set within the range: 0.1
s to 30 s, in 0.01 s steps
details on page 83
(1)
details on page 86
(2)
Limitations and additional functions
• in the presence of curve t= k/I
give a theoretical value lower than t41 itself
• Ekip Touch activates and displays MDGF protection parameters if the presence of toroid MDGF
has been enabled in the Settings menu (page 49);
• the block functions and type of selectivity can also be accessed by means of the service connector
(via Ekip Connect) or communication via system bus (page 85)
• with CB in UL standard configuration, some parameters have different maximum values: I41
maximum = 1200 A, Startup maximum = 1200 A, t41 maximum = 400 ms
• an error is generated if MDGF In Size value exceeds rated current value of CB
2
(1)
(2)
(2)
(2)
, the protection trip time is forced to t41 if the calculation results
2
ABB | SACE Emax 2
Default
OFF
ON
t = k
0,2 In
0,4 s
90 % I41
OFF
(1)
0,04 s
OFF
0,2 In
0.1 s
Ekip Touch - Protections
9 - Additional protections and functions