Page 74 - Sace Emax 2 Manual for design engineers

ABB | SACE Emax 2
6 - Power protections

List The Power protections, available by default for Ekip Hi-Touch, Ekip G Touch, Ekip G-Hi Touch models and
configurable in Ekip Touch as additional SW package, are:
Name Type of protection Page
RP Reverse active power 72
D (2) Directional short-circuit with adjustable delay 75
OQ (1) Maximum reactive power 75
OP (1) Active overpower 75
UP (1) Active underpower 76
RQ (1)(2) Reverse reactive power 76
Cos φ Minimum Cos φ 77

(1) the protection is not available by default with Ekip Hi-Touch. However, it can be integrated by requesting the
relative SW package
(2) the protection is not available by default with Ekip G Touch. However, it can be integrated by requesting the
relative SW package

WARNING! The Power flow parameters effect the sign of the power and power factor
values measured by the unit. Power flow must be configured and verified on the
basis of your installation to ensure that all the protections of the Power Protections
package function correctly

RP Protection Function
The protection sends a TRIP command if the reverse total active power exceeds threshold P11 for longer
t than t1.
RP P11 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)
t11 • the graph with trip curve (page 106)
Parameters
P Parameter Description Default
Activates/deactivates the protection and its availability in the parameters
Enable OFF
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.
The value is given as both absolute value (kW) and relative value (Sn) and
Threshold f11 can be set within the range: -0.05 Sn to -1 Sn in 0.001 Sn steps 0,1 Sn
NOTE: the threshold expressed in Sn is preceded by the “-” sign to
indicate that inverse power is involved
This is the trip time of the protection; the value is given in seconds and
Time t11 10 s
can be set within a range: 0.05 s to 120 s, in 0.01 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).

72 | © 2020 ABB | 1SDH001330R1002 - ECN000134959 - Rev. A Ekip Touch - Protections | 6 - Power protections