Siemens siprotec 7SA6 User Manual

Control During Operation
7-217SA6 Manual
C53000-G1176-C156-2
7.1.3.2 Energy
Reading out
Metered Values
In the maximum scope of device 7SA6 there are counters that summarize the active
and reactive power (
Wp, Wq) separately according to output and input of the active
energy or capacitive and inductive reactive power (in direction to the protected object).
It is a prerequisite that the direction is configured to
forward (Address 201,seeSec-
tion 6.1).
From the
DeviceFront
With the device ready for operation, first press the key. The MAIN MENU appears.
Use the key to select the menu item
Measurement (See Figure 7-1), and switch
to the list of measured values using the key. The
MEASUREMENT selection appears.
There, select the menu item
Energy with the key, and switch to the table of energy
using the key.
Use the and keys to move up and down in the table of the energy.
Usethe keytoreturntothe
MEASUREMENT submenu. Use the key to return to
the
MAIN MENU.
From PC with
DIGSI
®
4
Make a double click on MEASUREMENT (Figure 7-2) to view the measurement groups.
Select
Other with another double click.
In the next level double-click on
Energy.
Bydouble-clickingonaniteminthelistintherightpartofthewindow,anotherwindow
is opened viewing the corresponding content of the counter group.
7.1.3.3 Setting Set Points
SIPROTEC
®
7SA6 enables the user to set limit points (or: set points) for some impor-
tant measured and metered values. If one of these set points is reached, exceeded or
undershot, the device generates an event log. This annunciation - like all event logs -
can be allocated to LEDs and/or output relays and then transmitted via interfaces.
Set points can be set for the following measured and metered values:
• IL1dmd>: exceeding a preset maximum average value in phase L1.
• IL2dmd>: exceeding a preset maximum average value in phase L2.
• IL3dmd>: exceeding a preset maximum average value in phase L3.
• I1dmd>: exceeding a preset maximum average value of the positive sequence sys-
tem of the currents.
• |Pdmd|>: exceeding a preset maximum average value of the active power magni-
tude.
• |Qdmd|>: exceeding a preset maximum average value of the reactive power mag-
nitude.
• Sdmd>: exceeding a preset maximum average value of the apparent power.
• |cosϕ|<: untershooting a preset rate of the power factor
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Siemens siprotec 7SA6 Specifications

General

Brand	Siemens
Model	siprotec 7SA6
Category	Relays
Language	English