Table of Contents
Advertisement
2 Functions
2.34.4 Statistics
Tripping commands from the device are counted. Currents of the last disconnections
instigated by the device are logged. Disconnected fault currents are accumulated for
each breaker pole.
2.34.4.1 Functional Description
Number of Trips
The number of trips initiated by the 7UM61 is counted, as long as the position of the
circuit breaker is monitored via binary inputs. Hereby it is necessary that the internal
pulse counter is allocated in the matrix to a binary input that is controlled by the circuit
breaker OPEN position. The pulse metered value can be found in the "Statistics"
group if the option "Measured and Metered Values Only" was enabled in the configu-
ration matrix.
Switch-Off Values
Additionally the following switch-off values appear in the fault indications for each trip
(at Trip)
signal:
• the primary currents in all three phases in kA
• the three phase-earth-voltages in kV
• primary active power P in kW, MW or GW (precisely averaged power)
• primary reactive power Q in kVA, MVA or GVA (precisely averaged power)
• Frequency in Hz
Operating Hours
The accumulated operating hours under load are also stored (= current value in at
least one phase is greater than the limit value 281 set under address BkrClosed I
MIN).
Accumulated Shut-
The shutdown currents for each phase indicated at every trip command individually
down Currents
are accumulated and stored.
The counter and memory levels are secured against loss of auxiliary voltage.
Setting / Resetting
Setting or resetting of these statistical counters takes place under the menu item AN-
NUNCIATION → STATISTICS by overwriting the counter values displayed.
Startup Behaviour
Start
Startup occurs after each switching on of the supply voltage.
Initial Start
Initial start occurs after initialization of the device by DIGSI
Restart
Restart occurs after loading a parameter set or after reset
206
®
4
7UM61 Manual
C53000-G1176-C127-3
Advertisement
Table of Contents
