Power Protections - ABB SACE Tmax XT5 Operation And Maintenance Manual

5 - Power protections

RP Protection
RP
P11
t11
60 | © 2019 ABB | 1SDH002039A1002 - ECN000093027 - Rev. A
Elenco 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 Maximum active power
(1)
UP Minimum active power
(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
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 80)
• the graph with trip curve (page 92)
Parameters
P
Parameter
Enable
Trip Enable
Threshold f11
Time t11
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 75).
Description
Activates/deactivates the protection and its availability in the parameters
menu
Activates/deactivates transmission of the open command: if 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 (kW) and relative value (Sn) and
can be set within the range: -0.05 Sn to -1 Sn in 0.001 Sn steps
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
can be set within a range: 0.05 s to 120 s, in 0.01 s steps
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Default
OFF
OFF
0,1 Sn
10 s
Protections | 5 - Power protections