ZIRO-F6
16 + 32 CHANNEL
DISTURBANCE RECORDER
ZIRO-F6 disturbance recorder is a stand alone equipment built in a substation
or power station. It makes snapshots of the transient events of electric
power systems, like switching surges, short circuit currents, voltage swells
or sags, and enables the evaluation of the stored events. It consists of
a signal conditioner, an A/D conversion board and an IBM PC/AT type industrial
computer housed in the same metal box. The input units of the signal conditioner
are isolated. The inputs should be specified by the user (the 16 analog
inputs can be voltage or current input adjusted for the secondary of CT
or VT, while the 32 digital inputs can be connected to a DC voltage via
relay contacts e.g. DC voltage of the protection system), when ordering.
The sampling of ZIRO-F6 is synchronous with the actual network frequency.
This operation mode results in an accurate zero crossing detection and
high accuracy measurement against the equipment being lack of the synchronous
sampling. An LCD (128x240 pixel) is built in to enable displaying of the
measured time functions immediately on site.
The built in watchdog ensures a continuous self-control. Interruption
or failure of operation will be stored on a separated memory.
A dedicated software package is included to download and evaluate the
measured signals. Using this program, the measured data can be downloaded
during continuous normal operation of the equipment via serial port into
another PC, or via modem, into a central data acquisition system. The evaluation
software runs under MS Windows.
A double hierarchical structure was developed to avoid misprograming
of the equipment by unauthorised persons.
Technical specification
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Supply voltage: 220 VDC, -20+10% (other value on request available)
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Input power: max. 100 VA
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16 analog inputs: range, overloading are subject of order (e.g. (100/
V, 100V, 200/ V, 200V, 1A, 5A)
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the inputs are isolated
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frequency response: 40-3000 Hz
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accuracy: 0,5%
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resolution: 12 bit
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32 digital inputs: number of isolated units is subject of order as
well as the nominal voltage (220 VDC, 110 VDC e.t.c.) the inputs
are reverse voltage protected and isolated
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Frequency measurement: 45-61 Hz (signal of the 1st analog channel)
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accuracy: 0.01% *0.01Hz
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Main data of the recording
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sampling rate: programmable 100 Hz-10 000 kHz
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pretrigger time: programmable 0-5 620 ms
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posttrigger time: programmable 100-32 000 ms
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expanded recording time: programmable 0-max posttrigger time (when
during a snapshot a triggering occurs again in a given interval of
the posttrigger time, the recording interval will be expanded
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Trigger conditions: (can be set from software)
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for the analog inputs: falling and/or rising over a threshold (e.g.
voltage drop, or overcurrent)
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for the digital inputs: falling and/or rising edge (to avoid false
triggering , the condition should be stable for a programmable
time: 1-10 ms)
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Outputs: missoperation signal (relay contact)
signal when being triggered (relay contact)
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Services:
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built in clock: date, hour, minute, second
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storing capacity: approximately 600 events
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watchdog: report
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triggering: setting of conditions
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copy to softdisk: built in FDD
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on-site visualising: built in graphic LCD
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on-site printing: hardcopy, headline, time functions table of variation
of the digital signals (optional)
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Data transfer via:
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on-site hardcopy(optional) with date, numbering, frequency, headline,
time functions of analog and digital signals, list of change of digital
states
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soft diskette
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serial port RS 232-C (optional)
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telephone modem (optional)
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optical cable (fibre or plastic) (optional)
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Environmental conditions:
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operation temperature: 0 +40*C
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storage temperature: -10 +60*C
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relative humidity: 90% (without vaporisation)
Mechanical data
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width: 443 mm
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height: 451 mm
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depth: 229 mm
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weight:~19 kg