ABB SACE Emax E4.2 - Page 74

ABB | SACE Emax 2
Ekip Touch - Protections
4 - Voltage Advanced protections
71 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
RV Protection
U22
t
t22
V
RV
Function
The protection trips if loss of insulation occurs (verification of residual voltage U0); the protection sends
a TRIP command if voltage U0 exceeds threshold U22 for longer than t2.
Protection is available in 3P and 3P + N configuration by activating the presence of neutral voltage in Ekip
Measurement module or in external V0 configuration if Ekip Synchrocheck is present.
To check and simulate the trip times in relation to all the parameters, please consult:
• summary table of the protections with the operating characteristics (page 96)
• the graph with trip curve (page 107)
Parameters
Parameter Description Default
Enable
Activates/deactivates the protection and its availability in the
parameters menu
OFF
Trip Enable
Activates/deactivates transmission of the open command: if
disabled, the alarm and exceedance of protection time are only
managed as information
OFF
Threshold U22
Establishes the value that activates the protection.
The value is given as both absolute value (V) and relative value
(Un) and can be set within the range: 0.05 Un to 0.5 Un in 0.001
Un steps
0,15 Un
Time t22
This is the trip time of the protection; the value is given in
seconds and can be set within a range: 0.05 s to 120 s, in 0.01 s
steps
15 s
Reset Time
This is the time the alarm is retained after the protection has
quit the alarm condition; it can be useful for keeping the timing
activated when the protection is temporarily deactivated.
The value is given in seconds and can be set within the range: 0 s
to 0.2 s, in 0.02 s steps
0 s
Limitations and additional functions
The block functions can also be accessed by means of the service connector (via Ekip Connect) or by
connection to the system bus (page 86).