Power Protections - ABB SACE Tmax XT7 Operation And Maintenance Manual

11 - Power protections

RP Protection
RP
P11
t11
63 | © 2020 ABB | 1SDH001821A1002 - ECN000135670
List The Power protections, available by default for the Ekip Hi-Touch, Ekip G Touch, Ekip G-Hi Touch and Ekip M
Touch models and configurable in the remaining models as additional SW package, are:
Name Type of protection
RP Reverse active power
D Directional short-circuit with adjustable delay
(2)
OQ Maximum reactive power
(1)
OP Active overpower
(1)
UP Active underpower
(1)
RQ Reverse reactive power
(1)(2)
Cos φ Minimum Cos φ
(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
(2)
protection 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
Function
The protection sends a TRIP command if the reverse total active power exceeds threshold P11 for longer
than t1.
t
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 88)
• the graph with trip curve (page 103)
Parameters
P
Parameter Description
Activates/deactivates the protection and its availability in the parameters
Enable
menu
Activates/deactivates transmission of the open command: if disabled,
Trip Enable 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 (kW) and relative value (Sn) and
can be set within the range: -0.05 Sn to -1 Sn in 0.001 Sn steps
Threshold f11
This is the trip time of the protection; the value is given in seconds and
Time t11
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 78).
NOTE: the threshold expressed in Sn is preceded by the "-" sign to
indicate that inverse power is involved
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Default
OFF
OFF
0,1 Sn
10 s
Protections | 11 - Power protections