Download Email Q4A Polyphase Electronic (E3) Meter Customer Installations

Customer Installations
Advice No. 1230 26/2/02
Doc. Ref. CIA 1211B
TO: Customers, Service Providers, Electrical Contractors and EnergyAustralia Staff
Email Q4A Polyphase Electronic (E3) Meter
Description
NB: this CIA describes a particular type/brand of E3 meter. This type/brand may be liable to
change in the future as EnergyAustralia may enter alternative future supply contracts for meters.
Adequate notice of any changes will be published.
The Email Q4A electronic meter is an E3 meter (type 5 code compliant meter) (refer to CIA
1211B). Please note that this three phase meter
must only be used to meter a single tariff. The
meter has a property number prefix beginning
with QFW.
Features of the Q4A electronic meter are as
follows:
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•
•
•
•
•
•
•
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Electronic, polyphase, whole current meter
Active energy (kWh) registers
100 Amperes per phase maximum current
rating
Bottom connected
3 phase, 4 wire configuration
Optical and RS-232 ports for
communication
Class 1 accuracy
Load profile recording
Quality of supply monitoring
Programmable.
The two buttons on the front of the meter,
RESET and ALT, have been covered by
blanking plugs, they are not used.
Figure 1: Email Q4A Electronic Meter.
The dimensions of the meter are
175(W) x 286(H) x 104(D) (mm).
A three-phase power supply provides improved metering reliability for the Q4A. The meter will
not shutdown if one or two phase voltages are lost. The Q4A meter will function correctly even if 1
or 2 phase voltages are not connected to the meter.
1
Since the Q4A has the same mounting configuration as traditional Email polyphase disc meters, it is
not necessary to modify the meter panel when replacing an old meter. The Q4A meter can be used
to meter 2 phase loads.
The Q4A meter dimensions and mounting diagram are shown in Figure 2.
Figure 2: Q4A meter dimensions and mounting diagram.
A drilling template (drawn to scale) for the Q4A is included in Appendix A of this CIA (the dotted
line is the meter outline). The Q4A meter will only be issued with the larger terminal cover (42mm
added to the bottom of the diagram in Appendix A). NB. Customers must allow a minimum
‘footprint area’ of 340mm high x 200mm wide on their new switchboards to accommodate this
meter (refer to CIA 1211B), (the border of the diagram in Appendix A is NOT the footprint size).
Application
The multifunctional Q4A electronic meter is a type 5 code compliant meter for half hour interval
metering and Time of Use (ToU) tariffs with load profile recording for use by retailers in
contestable markets. It can be used for industrial, commercial and domestic installation metering
that requires an E3 configuration.
As part of its quality of supply monitoring, the Q4A can:
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Record details about power outages, such as the date, time and duration
Record details about fluctuations in the phase voltages and currents, such as the maximum and
minimum average values
Monitor phase rotation (phase sequence).
The load profile of the customer’s energy usage will be recorded in 30 minute interval periods and
stored in non-volatile memory in the meter. This data will be downloaded by meter readers with
hand held probes that connect to the optical port. It will then be forwarded to the Meter Data
Agency (MDA) for billing and statistical purposes.
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Please note that the meter will operate on Australian Eastern Standard Time (AEST). There will be
no change in time due to daylight savings.
Terminal Arrangement
Figure 3 shows the whole current wiring schematic for the Q4A electronic meter.
Figure 3: Q4A meter 3-phase, 4-wire, whole current configuration.
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Display
The meter display for the Q4A electronic meter is shown in Figure 4.
Figure 4: Q4A meter display.
The display shows the Display ID, Value, Annunciators and Indicators. The Annunciators help
identify the display parameters and the Indicators show status information.
The Q4A is programmed with a program structure called “Structure 19”. The structure card and the
registers it has been programmed to display are shown in Table 1.
Table 1: Structure 19 Register Display
Testing and Certification Australia – Metering
Reg
88
01
02
03
METER REGISTER IDENTIFIER CARD
Structure 19 (For FRC meters)
Display Test (88888888)
Date (ddmmyy)
Time (hhmm)
Total cumulative kWh
Dials
Dec
6
6
4
5
0
0
0
1
Please note that previous electronic meters were programmed to display the ToU tariff register.
The Q4A will not display this information. ToU tariffs will be calculated from the load profile data
that the Meter Data Agency (MDA) will download from the Q4A.
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Meter Wiring Check
It is important that the installer checks the wiring of the Q4A meter once it is installed.
To check the wiring:
1. Visually inspect the connections to ensure the correct wire is connected to the correct
terminal of the meter
2. When a voltage is applied, the Q4A meter will turn on and the display can be read
3. Attach a suitable load to the meter (e.g. household load or a 100W load lamp)
4. Check the display of Q4A for the arrow and box pulse indicators. The arrow indicator
pointing to the right (while looking at the meter) will flash at a rate of one pulse per
Watt-hour measured (when direct connected). This is a pulse approximately every 3060 seconds with a 100W load. The box indicator will flash at a rate of one pulse per 10
Watt-hours measured
5. Also check for “Reverse Energy”. This is where the Active and Load Lines have been
swapped on the Q4A. Reverse energy is indicated by the arrow pulse indicator pointing
to the left instead of the right. If this situation does occur, please ensure that the error is
rectified.
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