Customer Installations
Advice No. 1347 18/02/2010
Doc. Ref. ES3 Part B, Technical Specifications for
Metering Installations
Customers, Service Providers, Electrical Contractors and Ausgrid Staff
TO:
Amendment to ES3, Part B - Technical Specifications
for Metering Installations
Scope
This CIA outlines the technical information regarding the new EDMI EEM single phase E1 meter. This meter is
capable of register buy back energy for Net and Gross metered installations.
Amendments

1.4
Insert the new clause 1.4 on page 24.
EDMI EEM MK7C SINGLE PHASE ELECTRONIC METER.
The EDMI EEM prefix Mk7C Atlas electronic meter is a multifunctional, programmable single
phase whole current (10/100A) 240V, Type 5 code compliant meter. This meter must only
be used to meter a single tariff.
The meter has a property number prefix beginning with EEM and by default is programmed
with Structure 19. This meter can also be programmed to register buy back energy via
Structure 21 and 25.
Features of this EEM Mk7C Atlas electronic meter are as follows:

Electronic, single phase, whole current meter

Four Quadrant (kWh, kvarh, and
kVAh) energy measurement

10 A Base current, 100 Amperes
maximum current rating

Bottom connected

ANSI optical port for communication

Optional Active RS-232 Port (RJ45)

Class 1 accuracy

Load profile recording

A 950mAh internal battery ensures
that the Mk7C Atlas meter will
maintain date and time settings if
power to the meter is lost.

This meter is suitable for registering buy back energy
1.4.1 Application
Figure 1.22 Atlas EEM Electronic
The EDMI EEM (Mk7C Atlas) electronic
meter is a Type 5 code compliant meter for 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
E1 configuration.
The EEM meter is programmed record the customer’s energy usage in 30 minute
intervals and stored in non-volatile memory in the meter.
This data will be downloaded by meter readers with hand held computers that
connect to the optical port.
Note: (1) The meter operates on Australian Eastern Standard Time (AEST) for the
entire year.
There will be no change in time due to daylight savings.
(2) The EEM Mk7C Atlas will not display TOU tariff information.
TOU tariffs will be calculated from the load profile data collected.
1.4.2
Layout of the meter
The layout of the EEM meter is shown in Figure 1.23 below:
Item
2
8
3
1
4
8
Description
1
Liquid Crystal Display (LCD)
2
“Connect” Button – Disabled
3
“Select” Button – cycle
between displays
4
Alarms (E1…E5)
5
“Pulse 1” LED
1000 pulses/kWh
6
“Pulse 2” LED
End of Interval pulse
7
IR (ANSI) Optical Interface
8
Meter Cover seals (Do Not
Remove)
9
Terminal Cover
10
Terminal Cover sealing screw
11
Meter technical data and
Ausgrid stock code
6
5
7
11
10
9
Figure 1.23 EEM Meter appearance
The direction of Energy Flow and the meaning of Net and Gross Metering is as described
in the Ausgrid’s publication ES3 Part A, Metering Installations
1.4.3 Definition of Terms
Export Energy
Electricity that is generated by the customer and delivered back to the
Ausgrid Network (i.e. electricity delivered to the NEM electricity pool).
Import Energy
Electricity that is drawn from the local distribution network and consumed or
used within the customer’s installation (i.e. electricity received from the
NEM electricity pool).
Net Metering
A metering system that measures the excess energy generated and
exported into the distribution network.
Gross Metering
A metering system that measures the electricity generated by the
Complying Generator system.
1.4.4 Terminals and connectors
Figure 1.24 below shows the terminals and connectors of the EEM Meter.
TB2
TB1
TB4
TB3
Wiring terminals
Figure 1.24: EEM Mk7C Atlas Meter Terminal Block Diagram
The table below describes the use for each of the terminals.
Terminal
Description
TB1
Voltage and current inputs as described in “WIRING
CONNECTION” below.
TB2
Do Not Use
TB3
RS-232 port with RJ45 connector – Do Not Use
TB4
Do Not Use
Table 1.8 - Terminal Block details
1.4.5 Wiring Configuration
The EEM Meter is configured as a single phase 2 wire Whole Current meter. Refer
to ES3 for wiring details.
Figure 1.25 shows the wiring schematic:
Figure 1.25: Mk7C Atlas Meter Single-phase, Whole Current Configuration
Note: Connect the Neutral wire to Terminal 3 only
1.4.6 LCD display
The display, shown below, contains a number of Annunciators and Indicators which
help identify display options (metering and configuration information).
Figure 1.26: Mk7C Atlas meter display.
The top left of the display shows arrows and characters indicating the export/import
of kW and kVar:
Symbol
Meaning
+P
kW Import (Delivered to the customer)
-P
kW Export (Generated by the Customer)
+Q
kVar Import (lag)
-Q
kVar Export (lead)
Table 1.9
The SELECT button is used to display the viewable meter information. This
information is held in two groups, these being SetA and SetB. To switch between the
two groups, hold down the SELECT button for 2 seconds. Once the Set has been
chosen, press the SELECT button momentarily to scroll through the individual data
screens.
See the section ‘ALTERNATE DISPLAY AND SCROLL BUTTONS” below for more
details
1.4.7 Alarm and Warning Codes
The EEM Mk7C Atlas meter has 5 alarms available; the presence of an alarm is
indicated by a downward pointing arrow (▼) indication on the bottom of the display.
There are 5 possible locations for the arrow along the bottom of the display. Alarm
numbers are marked on the display beneath the alarm arrows. The types of alarm
are shown in Table 1.9 below.
Note: If the problem cannot be identified or fixed on site, note the error code and
return the meter to Ausgrid for investigation
Alarm
Indication
Standard
Meter Configuration
Net Buyback tariff
Modem Failure (ignore
when no modem is
connected)
Reverse Power
Reverse Power (latched)
Voltage tolerance error
Battery Failure (latched)
E1
E2
E3
E4
E5
Solar Gross
Feed-in Tariff
VT failure (Contact EA for assistance)
None
Magnetic Tamper (latched)
Voltage Tolerance error
Battery Failure (latched)
Table 1.9: EEM Meter– Alarm Indications
1.4.8 LED indicators
The meter uses the following LEDs to show status information:


The left LED indicator “PULSE 1” flashes at the rate of 1 x Wh/pulse.
The right LED indicator “PULSE 2” flashes at the end of each logging
interval.
1.4.9 Alternate display and Scroll buttons
The EEM Mk7C meter displays data stored in the meter’s registers on the LCD. The
data to be displayed is programmed in two display groups (SetA and SetB), and
scrolls automatically through the first of these display groups (Normal Display).
To switch between the two groups, hold down the SELECT button for 2 seconds.
Once the Set has been chosen, press the SELECT button momentarily to scroll
through the individual data screens. Descriptions of these sets are given in tables
below:
Note: The LCD display is operational even when the meter is not powered up. To
view the display when off power, press the SELECT button until the display is
visible.
To determine which Configuration is programmed into the meter, select the
SetB display, step through the displays until the tCAS or STR screen is
shown.
1.4.10 Display
The correct structure as detailed below must be indicated on the NOSW form.
1.4.10.1 Standard Configuration (Structure 19)

SetA shows the recorded register data for the meter programmed for Structure 19.
Testing and Certification Australia – Metering
METER REGISTER IDENTIFIER CARD
Reg
Display Structure 4619
Dials
Dec
(For EEM meters)
8888
Display Test
01
01 D
Date (dd.mm.yy)
6
0
02
02 T
Time (hh:mm:ss)
6
0
03
03 E
Total cumulative kWh (Import - kWh)
7
1
Table 1.10: EEM Meter with Standard Structure 19 Configuration - SetA Display
Information

SetB shows the additional recorded register data for the meter – see Table 5 below.
Display
IΠP
Cur
voL
AnG
P uP
LPLt
CALA
LALA
tCAS
EAId
SEr
vEr
Description
Total cumulative kWh (Export – kWh)
Current (A)
Voltage (V)
Voltage Phase Angle
Number of Power Up’s
Last Power Loss Time/Date
Current Alarms
Latched Alarms
TCA Structure ID (4619)
Ausgrid Meter ID
Serial Number
Software Version Number
Table 1.11: EEM Meter with Standard Structure 19 Configuration - SetB Display
Information
1.4.10.2 Net Buy Back Configuration (Structure 21)
Structure 21 will be indicated on the front of the meter and must be indicated on the
NOSW form.
 SetA shows the recorded register data for the meter.
Testing and Certification Australia – Metering
METER REGISTER IDENTIFIER CARD
Reg
Display Structure 0521
Dials
Dec
(Net Buyback for EEM meters)
8888
Display Test
01
01 D
Date (dd.mm.yy)
6
0
02
02 T
Time (hh:mm:ss)
6
0
03
03 E
Total cumulative kWh (Import - kWh)
7
1
93
93 I
Total cumulative kWh (Export - kWh)
7
1
Table 1.12: EEM with Net Buy Back Configuration (Structure 21) SetA Display Information

SetB shows the additional recorded register data for the meter.
Display
Description
Cur
Current (A)
voL
Voltage (V)
PAnG
Voltage Phase Angle
PRuP
Number of Power Up’s
LPLt
Last Power Loss Time/Date
CALM
Current Alarms
LALM
Latched Alarms
STR
TCA Structure ID (0521)
EAId
Ausgrid Meter ID
SEr
Serial Number
vEr
Software Version Number
RN
Service Code (EA Internal Use only)
Table 1.15: EEM Meter with Net Buy Back (Structure 21)
Configuration - SetB Display Information
1.4.10.3 Gross Metering Configuration (Structure 25):
Structure 25 will be indicated on the front of the meter and must be indicated on the
NOSW form.

SetA shows the recorded register data for the meter.
METER REGISTER IDENTIFIER CARD
Reg
Display Structure 0125
(Gross Feed-in for EEM meters)
8888
Display Test
01
01 D
Date (dd.mm.yy)
02
02 T
Time (hh:mm:ss)
73
73 B
Gross kWh Export
83
83 E
Gross kWh Import
Dials
Dec
6
6
7
7
0
0
1
1
Table 1.16: EEM with Gross Metering Configuration (Structure 25) - SetA Display
Information
 SetB shows the additional recorded register data for the meter.
Display
Description
IΠP
Total cumulative kWh (Export – kWh)
EHP
Total cumulative kWh (Import – kWh)
Cur
Current (A)
voL
Voltage (V)
PHAn
Voltage Phase Angle
PRuP
Number of Power Up’s
LPLt
Last Power Loss Time/Date
CALM
Current Alarms
LALM
Latched Alarms
STR
TCA Structure ID (0125)
EAId
Ausgrid Meter ID
SEr
Serial Number
vEr
Software Version Number
RN
Service Code (EA Internal Use only)
SIG
Modem Signal Strength (Valid only if modem
connected)
Table 1.17: EEM Meter with Gross Metering Configuration (Structure 25)- SetB
Display Information
1.4.11 ENERGISATION CHECK
The following steps are to be followed for correct wiring and operation of the meter:
1. Inspection
Visually inspect the connection to ensure the correct wire is connected to the
correct terminals of the meter.
2. Phase check
When a voltage is applied, the meter will turn on and the display can be read.
3. “Reverse Energy”
check
Attach the Load Tester to the meter
Applicable to 4619
Configuration
ONLY
Check for “Reverse Energy” prior to re-connection of the customer load. This is
where the Active and Load line may have been swapped.
On the Mk7C Atlas reverse energy is indicated by -P character and a left
pointing arrow on the top-left of the display. Reverse Energy is also indicated
by the Alarm indications E2 (Reverse Energy) and E3 (Reverse Energy,
latched).
If a “Reverse Energy” situation does occur, this error must be rectified
immediately.
Correct operation will be indicated by the presence of the +P indication arrow
4. Operation check
Check the PULSE1 LED output on the front of the meter.
The LED will flash at a rate of one pulse per 1 Wh measured and should flash
proportionally to the load connected via the Load Tester.
5. Date/Time check
Check date and time and confirm. Note the format Day, Month, Year
(DD.MM.YY)
6. Initial check
Check the meter display. The meter should be in auto scroll mode.
7. Connect load
Connect customer load. Pulse LED should flash if there is consumption.
8. Finish installation
Seal the meter.
1.4.12 Sealing of The Meter
Manufacturer Seals:
The EEM meter is sealed by the manufacturer at the factory. The meter is sealed at the
top left and top right of the meter. An example of the manufacturer’s seal is shown in
Figure 8.
Figure 8: EEM Meter Seal Location
The seals ensure that the meter has not been tampered or interfered with by
unauthorised parties. Ensure that the meter seals are in place and intact.
DO NOT install a meter without the seals or if the seals have been tampered with, return
the meter to Energy Australia.
Terminal Cover Screw Seal
A third seal is used to seal the Terminal Cover Screw. When installation is complete, a
seal must be applied to the Terminal Cover Screw.
1.4.13 Meter Dimensions and mounting diagram: (Not To Scale)