ABB SACE Emax 2 Series Operating Instructions Manual page 74

RV Protection
t
U22
t22
71 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
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.
RV
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)
V
Parameters
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 the value that activates the protection.
The value is given as both absolute value (V) and relative value
Threshold U22
(Un) and can be set within the range: 0.05 Un to 0.5 Un in 0.001
Un steps
This is the trip time of the protection; the value is given in
Time t22 seconds and can be set within a range: 0.05 s to 120 s, in 0.01 s
steps
This is the time the alarm is retained after the protection has
quit the alarm condition; it can be useful for keeping the timing
Reset Time 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
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).
ABB | SACE Emax 2
Default
OFF
OFF
0,15 Un
15 s
0 s
Ekip Touch - Protections
4 - Voltage Advanced protections