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Description of Unit
2.4 Microprocessor
The microprocessor of the ZxQ reads the digital raw data from the output
buffer of the signal processor every 0.2 seconds.
2.4.1
Data Provided by the Microprocessor
Based on the digital raw data provided by the signal processor, the
microprocessor calculates the measured quantities listed in the tables
below.
Depending on the functional range of the meter (energy C.4, netenergy C.6
or enerflex C.8), different sets of measured quantities are available.
Note
Availability
Meters for three-phase, three-wire networks (F-circuit) are not yet
available.
With energy (C.4) the following measured quantities are available:
Measured quantity
ZMQ
ZFQ
Active energy import
+A
Sum
Sum
Active energy export
–A
Sum
Sum
Reactive energy import
+R
Sum
Sum
Reactive energy export
–R
Sum
Sum
Reactive energy in quadrant I
+Ri
Sum
Sum
Reactive energy in quadrant II
+Rc
Sum
Sum
Reactive energy in quadrant III
–Ri
Sum
Sum
Reactive energy in quadrant IV
–Rc
Sum
Sum
Phase voltages (RMS)
U1, U2, U3
U12, U32
Phase currents (RMS)
I1, I2, I3
I1, I3
Network frequency
fn
yes
yes
Phase angle between voltages
ϕ
U
U1-U2 / U1-U3* U12-U32 **
Phase angle between voltage and current
ϕ
U-I U1-I1, U1-I2,
U1-I3 *
U12-I1,
U12-I3 **
Direction of rotating field
yes
yes
Phase failure
yes
yes
* Phase angles will only be displayed if voltage L1 is present.
** Phase angles will only be displayed if all voltages are present.
energy (C.4)
Summary of Contents for ZMQ202
Page 4: ...Landis Gyr H 71 0200 0215 f en ZMQ202 ZFQ202 User Manual 4 88...
Page 28: ...Landis Gyr H 71 0200 0215 f en ZMQ202 ZFQ202 User Manual 28 88 Description of Unit...
Page 54: ...Landis Gyr H 71 0200 0215 f en ZMQ202 ZFQ202 User Manual 54 88 Installation De installation...
Page 66: ...Landis Gyr H 71 0200 0215 f en ZMQ202 ZFQ202 User Manual 66 88 Operation...
Page 74: ...Landis Gyr H 71 0200 0215 f en ZMQ202 ZFQ202 User Manual 74 88 Service...
Page 84: ...Landis Gyr H 71 0200 0215 f en ZMQ202 ZFQ202 User Manual 84 88 Maintenance...
Page 86: ...Landis Gyr H 71 0200 0215 f en ZMQ202 ZFQ202 User Manual 86 88 Disposal...