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ABB | SACE Tmax XT

6 - Power protections

List The Power protections, available by default for the Ekip Hi-Touch and Ekip M Touch models and
configurable in the remaining models as additional SW package, are:
Name Type of protection Page
RP Reverse active power 55
D Directional short-circuit with adjustable delay 56
OQ (1) Maximum reactive power 58
OP (1) Active overpower 58
UP (1) Active underpower 59
RQ (1) Reverse reactive power 59
Cos φ Minimum Cos φ 60

(1) protection not available by default with Ekip Hi-Touch and Ekip M 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 76)
t11 • the graph with trip curve (page 89)
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
Trip Enable disabled, the alarm and exceedance of protection time are only OFF
managed as information
Establishes the value that activates the protection.
The value is given as both absolute value (kW) and relative value (Sn)
Threshold P11 and 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
Time t11 10 s
and can be set within a range: 0.05 s to 100 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 70).

55 | © 2022 ABB | 1SDH002031A1002 - ECN000212994 Protections | 6 - Power protections