User`s guide

V3-T9-80 Volume 3—Power Distribution and Control Assemblies CA08100004E—November 2013 www.eaton.com
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9.3
Metering Devices, Protective Relays, Software and Connectivity
Metering Devices
Disturbance Information
With the communications
option and Eaton’s Power
Management Software and
Waveform Display software,
a Waveform Analysis will
construct waveforms of up to
56 cycles of all currents and
voltages (including neutral
and ground) to help
troubleshoot undervoltage/
sag and overvoltage/swell
conditions. (See CBEMA
Trend Logging section.)
By programming a reset
threshold, the duration of the
voltage disturbance can also
be indicated.
The IQ Analyzer 6600 series
with Graphic Waveform
Display offers the ability to
view the captured waveform
right at the device. The 6600
series also offers the ability to
detect and capture sub-cycle
voltage disturbances.
Extensive Harmonic
Distortion Analysis
Current and voltage distortion
data are displayed at the
device and accessible
through the communications
port. This includes % THD,
K-Factor, Crest Factor,
CBEMA factor, and both
magnitudes and phase angles
of all harmonics through the
50th. A snapshot sample
of this information may
be activated by user
commands, discrete inputs
or programmable thresholds
to capture distortion data
during conditions of real
interest. To help eliminate
nuisance alarms, harmonic
distortion information can be
captured and relay outputs
activated when THD exceeds
a programmable percentage
of fundamental or a
programmable magnitude
(e.g., amperes) threshold.
Time-of-Use Metering
The IQ Analyzer offers
the ability to store energy
usage data for time of use
revenue metering. It can
be programmed for any
combination of weekday,
Saturday, Sunday,
22 holidays, 8 seasons,
32 schedules and 10 time
periods per schedule. The IQ
Analyzer will keep track of the
following parameters for four
different utility rates:
●
Watthours
●
VAR hours
●
VA hours
●
Current demand
●
Watt demand
●
VA demand
●
VAR demand
Historical Trend Logging
The IQ Analyzer is equipped
with onboard logging
capability, which includes
the ability to log a total of
24 parameters with intervals
ranging from 0.13 seconds
(every eight cycles) to twice
a week (5040 minutes). The
trending function can begin
immediately or can be
triggered upon receipt of a
discrete input into the IQ
Analyzer. Onboard logging
provides a cost-effective
means of distributed data
storage where real-time
communications may not be
feasible or for applications
where data storage
redundancy is desired. Four
trend data logs are stored in
non-volatile memory aboard
the IQ Analyzer and can be
retrieved at the display or
via communications for
viewing using Eaton’s Power
Management Software.
●
Up to 24 parameters with
storage capacity for up to
90,000 data points
●
Up to 234 days of data
can be stored when
recording a parameter
every 15 minutes
●
Trends 1, 2 and 3 can
save data on a discrete
contact input
●
Trend 4 can save data
on a power quality or
meter event
●
Minimum and maximum
recording (minimum and
maximum three-phase
average current, maximum
I
G
, minimum and
maximum three-phase
average V
LL
and V
LN
,
maximum V
NG
, maximum
system watts, VARs and
VA, minimum and
maximum apparent and
displacement PF). Using
this feature, minimum
and maximums reached
during each trend interval
are recorded.
CBEMA Trend Logging
The IQ Analyzer can be
configured to store the
necessary data so that the
software can display a sag or
swell voltage event on the
industry standard CBEMA
(now ITIC) curve for
predictive maintenance
and troubleshooting. This
application utilizes the IQ
Analyzer waveform capture
for high-0speed events along
with historical trend logging
for longer term voltage
disturbances. Once this data
is uploaded to a PC running
the Power Management
Software’s Event Viewer
the information is analyzed,
displayed and stored.
Automatic uploading of
CBEMA events can be
selected in the software.
A three-phase event will be
correctly displayed as a single
point on the CBEMA curve.
Event Logging
The IQ Analyzer will store
in non-volatile memory the
time and reason for last 504
events. These events can be
viewed from the graphical
display or accessed via
communications. In addition
to all of the meter events
listed in the Event Conditions
section (Page V3-T9-81), the
following events are entered
into the event log:
Time and date of:
●
Alarms
●
Meter power up
●
All resets
●
All setting changes
●
Communications
established or lost
Event logging is another
powerful troubleshooting tool
within the IQ Analyzer.
Extensive I/O and
Communications Capability
One analog and three digital
inputs are provided to
interface with sensors and
transducers. Three analog
outputs and four relay
contacts are furnished to
share data with PLCs and
control systems and to
actuate alarms and control
relays. Terminals are captive
clamp type and finger safe.
With the communications
option, the device can be
remotely monitored,
controlled and programmed.
Ratings
●
Application to 500 kV,
no PTs to 600 volts
●
CT ratios selectable from
5:5A to 10,000:5A
●
Standard 120/600 Vac line
●
Three-phase power supply
module, 100–600 Vac.
Separate source power
supply module available,
100–240 Vac or
100–250 Vdc
●
DC only separate source
power module also
available, 24–48 Vdc
Displayed Information Features
●
All information accessible
at device or through
communications port
via Eaton’s Power
Management Software
●
Quality true rms readings
through 50th harmonic
●
Complies with the
accuracy portion of
ANSI C12.20 Class 0.5%
revenue metering
specification
●
Accurate readings for
nonsinusoidal waveforms
with up to 3.0 crest factor
●
Screens display auto
ranging units, kilo units,
mega units as needed
●
10-digit energy readings
●
Displays multiple
parameters at the
same time
●
Programmable custom
screens