Page 77 - Sace Emax 2 Manual for design engineers

ABB | SACE Emax 2
OQ Protection Function
The protection sends a TRIP command if one or more of the reactive power values detected by the unit
t exceed threshold Q27 for longer than t27.
Q27 OQ 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 93)
• the graph with trip curve (page 107)
t27
Parameters
Q Parameter Description Default
Activates/deactivates the protection and its availability in the
Enable OFF
parameters menu
Activates/deactivates transmission of the open command: if disabled,
Trip Enable the alarm and exceedance of protection time are only managed as OFF
information
Establishes the value that activates the protection.
Threshold Q27 The value is given as both absolute value (kVAR) and relative value 1 Sn
(Sn) and can be set within the range: 0.4 Sn to 2 Sn in 0.001 Sn steps
This is the trip time of the protection; the value is given in seconds and
Time t27 1 s
can be set within a range: 0.5 s to 100 s, in 0.5 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 83).

OP Protection Function
The protection sends a TRIP command if one or more of the active power values detected by the unit exceed
t threshold P26 for longer than t26.
P26 OP 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 93)
• the graph with trip curve (page 107)
t26
Parameters
P Parameter Description Default
Activates/deactivates the protection and its availability in the
Enable OFF
parameters menu
Activates/deactivates transmission of the open command: if disabled,
Trip Enable the alarm and exceedance of protection time are only managed as OFF
information
Establishes the value that activates the protection.
Threshold P26 The value is given as both absolute value (kW) and relative value (Sn) 1 Un
and can be set within the range: 0.4 Sn to 2 Sn in 0.001 Sn steps
This is the trip time of the protection; the value is given in seconds and
Time t26 1 s
can be set within a range: 0.5 s to 100 s, in 0.5 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 83).

75 | © 2020 ABB | 1SDH001330R1002 - ECN000134959 - Rev. A Ekip Touch - Protections | 6 - Power protections