Landis & Gyr Cashpower Three Phase User manual

Cashpower Three Phase
Cashpower Prepayment Metering
Cashpower Three Phase
Version 11 Firmware
User Guide
Document version: 0.0
Date: 3rd November 2014
Issued by Product Management: Lee Naicker
© Landis+Gyr (Pty) Ltd
Electricity Prepayment Meters
Residential & Commercial

2/31 Released Abbreviations
© Landis+Gyr (Pty) Ltd Cashpower Three Phase V11 –User Guide
Revision history
Version
Date
Orginator
Comments
0.0
2014-12-03
Lee Naicker
Document Release

Abbreviations Released 3/31
Cashpower Three Phase V11 –User Guide © Landis+Gyr (Pty) Ltd
Table of Contents
1Abbreviations ____________________________________________________________________6
2Introduction______________________________________________________________________7
3Meter Front Panel Features_________________________________________________________8
3.1 Keypad_______________________________________________________________________8
3.2 Liquid Crystal Display (LCD) ______________________________________________________8
3.3 Rate of Consumption Indicator (Rate LED)___________________________________________9
3.4 Optical Communications Port _____________________________________________________9
3.5 Status Indicator ________________________________________________________________9
3.6 Customer Interface Unit Communications Indicator ____________________________________9
4Customer Interface Unit Front Panel Features __________________ Error! Bookmark not defined.
4.1 Keypad______________________________________________________________________10
4.2 Liquid Crystal Display (LCD) _____________________________________________________10
4.3 Rate of Consumption Indicator (Rate LED)__________________________________________10
4.4 Alarm Indicator________________________________________________________________10
5LCD display_____________________________________________________________________11
5.1 LCD Layout (what the icons mean) ________________________________________________11
5.2 Typical Operational Displays _____________________________________________________11
5.3 Happy and Sad Faces __________________________________________________________12
5.4 Alarm Indicator________________________________________________________________12
5.5 Load switch Status Indicator _____________________________________________________12
5.6 Remaining Credit Indicator ______________________________________________________12
5.7 Information Mode Indicator ______________________________________________________12
5.8 Credit Metering Mode Indicator ___________________________________________________12
5.9 Power (kWh) Indicator __________________________________________________________12
6Meter Operation - Prepayment Mode ________________________________________________13
6.1 General _____________________________________________________________________13
6.2 LCD Functions During Normal Operation ___________________________________________13
6.3 Entering Prepayment Vouchers via the Keypad ______________________________________13
6.4 Prepayment Voucher Processing _________________________________________________15
6.4.1 Incomplete Voucher__________________________________________________________15
6.4.2 Complete Voucher___________________________________________________________15
6.4.2.1 Voucher Accepted _______________________________________________________15
6.4.2.2 Voucher Accepted as a Valid STS Key Change Number (STS Only) ________________15
6.4.2.3 Voucher Overflow Rejection________________________________________________15
6.4.2.4 Incorrect Voucher ________________________________________________________15
6.4.2.5 Duplicate Voucher _______________________________________________________16
6.4.2.6 Expired Voucher (STS Only) _______________________________________________16
6.5 Voucher Decryption and Processing _______________________________________________16
6.5.1 STS Format ________________________________________________________________16
6.5.1.1 Electricity Credit Voucher __________________________________________________16
6.5.1.2 Set 1st Dispenser Key Voucher _____________________________________________16
6.5.1.3 Set 2nd Dispenser Key Voucher ____________________________________________17
6.5.1.4 Clear Tamper Voucher ____________________________________________________17
6.5.1.5 Set Power Limit Voucher __________________________________________________17

4/31 Released Abbreviations
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6.5.1.6 Set Credit Levels Voucher (Proprietary Voucher) _______________________________ 17
6.5.1.7 Clear Credit Voucher _____________________________________________________ 17
6.5.1.8 Initiate Dispenser Test Voucher (Meter Non-Specific Voucher) ____________________ 17
6.5.1.9 Commissioning Voucher (Non Meter-Specific, Proprietary Voucher) ________________ 18
6.5.1.10 Commissioning Voucher (Meter-Specific, Proprietary Voucher)____________________ 18
6.5.1.11 Decommissioning Voucher (Meter-Specific, Proprietary Voucher)__________________ 18
6.5.1.12 Set Credit Mode (Meter-Specific, Proprietary Voucher) __________________________ 18
6.5.1.13 Set Prepayment Mode (Meter-Specific, Proprietary Voucher) _____________________ 18
6.5.2 Proprietary Format __________________________________________________________ 18
6.5.2.1 Credit Transfer Voucher __________________________________________________ 18
6.5.2.2 Key Change Voucher_____________________________________________________ 19
6.5.2.3 Initial Key Change Voucher ________________________________________________ 19
6.5.2.4 Tamper Reset Voucher ___________________________________________________ 19
6.5.2.5 Set Power Limit Level Voucher _____________________________________________ 19
6.5.2.6 Set Credit Levels Voucher_________________________________________________ 19
6.5.2.7 Reset Meter (Clear Credit Register) Voucher __________________________________ 19
6.5.2.8 Clear Log Voucher_______________________________________________________ 19
6.5.2.9 Non Meter-Specific Initiate Load Switch Test Voucher ___________________________ 19
6.5.2.10 Non Meter-Specific Commissioning Voucher __________________________________ 20
6.5.2.11 Meter-Specific Commissioning Voucher ______________________________________ 20
6.5.2.12 Meter-Specific Decommissioning Voucher ____________________________________ 20
6.6 Commissioning and Decommissioning the Meter_____________________________________ 20
6.7 Display Total Units or Remaining Credit at the Meter _________________________________ 20
6.8 Power Limiting _______________________________________________________________ 20
6.9 Automatic/Manual Load Reconnection_____________________________________________ 21
6.10 Disconnect on Power Failure ____________________________________________________ 21
6.11 Credit Reader Interface_________________________________________________________ 21
7Meter Operation (Credit Metering Mode)_____________________________________________ 22
8Customer Interface Unit –Specific Functions ________________________________________ 23
8.1 General _____________________________________________________________________ 23
8.2 Audible Low-Credit Alarm _______________________________________________________ 23
8.3 Other Audible Tones___________________________________________________________ 23
8.4 Connecting the Customer Interface to the meter _____________________________________ 23
9Anti-tamper Features ____________________________________________________________ 25
9.1 General _____________________________________________________________________ 25
9.2 Anti-Tamper Switch____________________________________________________________ 25
9.3 Reverse Energy Detection ______________________________________________________ 25
9.4 Resetting a Tamper Condition ___________________________________________________ 26
10 Information Functions____________________________________________________________ 27
10.1 Meter Number (Register 000)____________________________________________________ 28
10.2 Instantaneous Power (Register 001) ______________________________________________ 28
10.3 Current Credit Register (Register 002)_____________________________________________ 28
10.4 Total Units Counter (Register 003)________________________________________________ 28
10.5 Current 24-Hour Consumption (Register 006) _______________________________________ 28
10.6 Previous 24-Hour Consumption (Register 007) ______________________________________ 28
10.7 Current 30-Day Consumption (Register 008)________________________________________ 28
10.8 Previous 30-Day Consumption (Register 009)_______________________________________ 28

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10.9 Low Credit Level (Register 012) __________________________________________________28
10.10 High Credit Level (Register 013) __________________________________________________28
10.11 Power Limit Level (Register 014)__________________________________________________29
10.12 Instantaneous power on Phase 1 (Register 015) _____________________________________29
10.13 Instantaneous power on Phase 2 (Register 016) _____________________________________29
10.14 Instantaneous power on Phase 3 (Register 017) _____________________________________29
10.15 Creep Lock Indication __________________________________________________________29
10.16 Extended Meter Number (Register 024) ____________________________________________29
10.17 Meter (Fixed) State Register 0 (Register 031)________________________________________29
10.18 Meter (Fixed) Option Register 0 (Register 033) ______________________________________30
10.19 Meter (Changeable) Option Register 0 (Register 035) _________________________________30
10.20 Meter (Display) State Register 0 (Register 037) ______________________________________30
10.21 Software Version Number (Register 048) ___________________________________________30
10.22 Power-Fail Counter (Register 050) ________________________________________________31
10.23 Last (STS only) Voucher ID in Date/Time Format (Register 054)_________________________31
10.24 Last Voucher Entered (Register 055) ______________________________________________31
10.25 Value of Last Voucher Entered (Register 056) _______________________________________31
10.26 Key Revision and Key Type (Register 057)__________________________________________31
10.27 Tariff Index (Register 058)_______________________________________________________31
10.28 Current Credit Register - 10Wh Resolution (Register 059)______________________________31
10.29 Supply Group Code (SGC) Register (Register 060) ___________________________________31
10.30 Total Units Counter - 10Wh Resolution (Register 061) _________________________________31

6/31 Released Abbreviations
© Landis+Gyr (Pty) Ltd Cashpower Three Phase V11 –User Guide
1 Abbreviations
CIU: Customer Interface Unit
EEPROM: Electrically Erasable Programmable Read Only Memory
ID: Identity
KWh: Kilowatt hour
LCD: Liquid Crystal Display
LED: Light Emitting Diode
SELV: Safe Extra Low Voltage
SGC: Supply Group Code
STS: Standard Transfer Specification

Introduction Released 7/31
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2 Introduction
The Cashpower Three Phase is a three phase, four-wire, 100 Amp per phase, split prepayment meter
in a compact BS housing. The meter is suitable for residential, commercial and light industrial
environments. It features a host of standard Cashpower software features, including the ability to
operate in credit metering mode. The meter has a display and keypad and can be used as a stand-
alone meter or can be converted into a split prepayment meter by simply fitting the customer interface
unit with a dedicated two-core communications wire. The meter features a dedicated diagnostics
indicator which shows the status of communications to the remote customer interface unit.
This user guide covers the functionality of both the meter and the customer interface unit.
Figure 1: Three Phase Prepayment Meter
Figure 2: Customer Interface Unit

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3 Meter Front Panel Features
The Three Phase meter makes use of a non-tactile, 12-key keypad with audible feedback for the entry
of tokens and accessing of various management functions, and a custom LCD for the display of
remaining credit, the scrolling in of keypad entries and various meter status and management
functions. There are also 2 LED indications and an optical communications port, details of which are
provided below.
Figure 3: Three Phase Meter - Front Panel Features
3.1 Keypad
The 12-key keypad enables the entry of vouchers and the accessing of various information functions.
Key-presses are acknowledged with an audible beep.
3.2 Liquid Crystal Display (LCD)
The LCD normally displays remaining credit. It can, however, be personalised to display the total units
consumed - refer to 6.7. The LCD also displays the scrolling in of keypad entries and various
information functions. For details of the LCD icons, refer to 5.
Rate of consumption
indicator (rate LED)
Meter label with
identification number,
model and type details
Optical
communications
port
Status indicator
Terminal cover with
2 sealing screws
Customer Interface
Unit communications
indicator LED
Liquid crystal display
12-key
keypad
(optional)
Sealing point
for utility
Sealing point
for utility
Backspace Key
Information Key

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3.3 Rate of Consumption Indicator (Rate LED)
This red LED provides the reference output for verifying the meter’s metrological accuracy. It also
provides a visual indication of instantaneous power consumption.
The meter constant for the 3-Phase meter is set to 1000 impulses/kWh. The rate LED will therefore
flash 1000 times for every kWh of energy consumed.
3.4 Optical Communications Port
This port enables data to be transferred to and from the meter (e.g. the accessing of various registers
or downloading of new parameters) using a portable interrogation device. The optical port’s
communication protocol complies with IEC 62056-21 Mode C.
3.5 Status Indicator
This yellow LED gives a quick, visual indication of several important meter statuses and provides a
useful diagnostic function to assist utility staff. During normal operation it flashes once every 5
seconds (effectively a power on indication). Two or more flashes occurring at regular intervals
indicate other status conditions as follows:
2 flashes
Meter error
This is a fault condition and requires a
service call-out. The load switch will
be open
6 flashes
Meter not initialised
The meter will not accept credit until
the appropriate vending keys are
entered
3 flashes
Meter tampered
The load switch will be open
7 flashes
Meter decommissioned
The load switch will be open
4 flashes
Meter out of credit
The load switch will be open
8 flashes
Customer interface unit
keypad locked out
The customer is temporarily inhibited
from entering vouchers due to
incorrect number entry on previous
attempts
5 flashes
Power limit exceeded
The load switch will be open
9 flashes
Waiting for manual load switch
closure
This indicates that the customer is
required to press any key on the
keypad of either the meter or the
customer interface unit to safely effect
load switch closure
3.6 Customer Interface Unit Communications Indicator
This green LED gives a visual indication of communication status with a remotely connected customer
interface unit:
During normal operation, with a customer interface unit connected to the energy management unit,
this LED flickers continuously at the transmitted data rate.
If there is no communication with a customer interface unit, the LED glows steadily. This would be
the case if the customer interface unit were faulty or the communications lines broken (open
circuit).
If the communication line is short-circuited, the LED is off.

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4 Customer Interface Unit Front Panel Features
Figure 4: Customer Interface Unit front Panel indications
4.1 Keypad
The 12-key keypad enables the entry of vouchers and the accessing of various information functions.
Key-presses are acknowledged with an audible beep.
4.2 Liquid Crystal Display (LCD)
The LCD normally displays remaining credit but also displays the scrolling in of keypad entries and
allows for the viewing of various information functions. For details of the LCD icons, refer to 5.
4.3 Rate of Consumption Indicator (Rate LED)
A red rate of consumption LED provides a visual indication of instantaneous power consumption.
Note: The rate LED on the customer interface unit is not a reference output and
cannot be used for verifying the associated meter’s metrological accuracy. Its
main function is to give a visible indication of energy usage i.e. a fast flash rate
signifies high usage.
4.4 Alarm Indicator
A yellow alarm LED indicator duplicates the alarm indication on the LCD –5.4. Its main function is to
give the customer a visible indication of critically low credit levels.
Rate of consumption
indicator (rate LED)
Liquid Crystal Display
With language independent icons
Space for associated
meter serial number
(Place on base part of the CIU)
12-key keypad
Alarm indicator
Indicates low credit
(Visual & Audible)
Information key
(For entering into
information mode to
read meter
parameters)
Backspace key
In case of consumer key press error
Communications
Type Indicator
(Yellow indicates pilot
wire communications)

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5 LCD display
5.1 LCD Layout (what the icons mean)
The LCD is designed to give a clear and unambiguous visual indication of important meter functions
by means of language-independent pictograms:
5.2 Typical Operational Displays
1- Happy face
2- Sad Face
3- Alert indicator
4- Load switch status indicator
5- Remaining credit indicator
6- Information mode indicator
7- Credit metering mode indicator
8- Power (kWh) function.
9- Time function (where used).
10 - Eight x 7 segment digits
Normal Operation
(Prepayment Mode)
Zero Credit
(Prepayment Mode)
Display shows remaining credit (kWh).
Load switch is closed and
consumption rate indicator flashes at
a rate proportional to the power being
used.
Credit is low. More credit must be
purchased to avoid disconnection of
the electricity supply.
No credit and supply disconnected.
Low Credit Warning
(Prepayment Mode)
Credit Metering Mode
Display shows total units used (kWh).
Load switch is closed and
consumption rate indicator flashes at a
rate proportional to the power being
used.

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5.3 Happy and Sad Faces
These two icons are used in combination to give a quick visual indication of good and bad status. For
example, if the meter is operating normally, the happy face will be on. However, if it is tampered, the
sad face will come on. Similar responses apply during entry of the prepayment voucher e.g. entering
an invalid voucher will result in the sad face flashing for a short period of time. Note that an out of
credit condition is not considered to be a 'bad’ status and the happy face will be on.
5.4 Alarm Indicator
This is a ‘low credit’ warning indicator that turns on if the current credit register value is greater than
zero, but less than half the low credit level. Under these conditions it is displayed in conjunction with
the smallest credit wedge icon –10.9.
5.5 Load switch Status Indicator
This icon indicates the status of the load-switch. If it is closed, electricity is supplied to the customer.
If it is open, the customer’s electricity supply is disconnected.
Under normal operating conditions e.g. with the meter in credit, the load switch will be closed. It will
open when credit expires.
5.6 Remaining Credit Indicator
This 4-segment ‘wedge’ provides a quick visual indication of the remaining credit in the meter and
functions as follows:
All four credit wedge icons are displayed if the value in the credit register is above the preset high
credit level.
The three smallest wedge icons are displayed if the value in the credit register is somewhere
between the preset low credit level and high credit level.
The two smallest wedge icons are displayed if the value in the credit register is somewhere
between the preset low credit level and half of that level.
The smallest wedge icon is displayed if the value in the credit register is somewhere between zero
and half of the preset low credit level.
All the credit wedge icons will be off when the meter runs out of credit (zero or negative values).
NB: The actual credit levels at which the individual bars in the ‘wedge’ icon toggle
are personalised at the time of manufacture but can be changed at any time with
an engineering voucher from the prepayment vending system.
5.7 Information Mode Indicator
This icon turns on in response to pressing the information key on the keypad. It indicates that the
meter is in information mode and the contents of various registers can be viewed –10. Note that the
information mode automatically times out after a period of 1 minute in the absence of any further
interrogation.
5.8 Credit Metering Mode Indicator
This icon is displayed in conjunction with the kWh indicator 5.9 to indicate when the meter is operating
in credit metering mode.
5.9 Power (kWh) Indicator
This icon is ON whenever the displayed units represent power (kWh). It applies to both the normal
meter operating mode as well as when viewing registers via the information mode.
The power (kWh) icon will also flash on and off if no measurable energy is being consumed.

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6 Meter Operation - Prepayment Mode
6.1 General
In this section the features and functionality of the prepayment meter are described in detail. Note that
display and keypad entry functions pertain largely to both the energy management unit and customer
interface unit. However, all processing of prepayment vouchers, load control etc. is carried out at the
energy management unit.
Refer to section 8 for additional, customer interface unit-specific functionality.
6.2 LCD Functions During Normal Operation
During normal operation, the LCD provides the following functions:
Displays the current credit register value to a resolution of 0.1 kWh.
Permanently displays the credit wedge outline.
Displays any combination of the credit wedge icons (0 to 4 segments depending on the actual
current credit level in the meter.
Displays the happy face icon, irrespective of the credit register value.
Displays the load switch status icon in either the closed or open position, depending on whether the
meter is in or out of credit.
6.3 Entering Prepayment Vouchers via the Keypad
Prepayment vouchers are entered into the meter by keying in the numbers printed on the credit
voucher via the keypad. The numbers entered are displayed on the LCD as they are being entered
and scroll from right to left, with a decimal point displayed at every fourth digit for ease of viewing.
Visual feedback is provided by flashing the happy face icon with each key press.
Audible feedback is provided by a ‘beep’ on each key press.
Incorrect entries can be corrected with the backspace key , which removes the rightmost digit on the
LCD with each press. Two backspace key presses in quick succession will clear the entire entry.
Acceptance of a valid prepayment voucher is automatic. Once a complete voucher has been entered,
the meter processes it and, depending on the result, displays one of the sequences described in –6.4.
Again, depending on what sequence is invoked, the keypad could remain locked for a variable period
of time i.e. it will not respond in any way to further key presses.
An incomplete voucher entry will be timed-out after 30 seconds; where after the customer interface
unit reverts to normal operation.

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Normal operating mode
(Includes zero credit and supply disconnected)
Number not recognized by meter
Number already used
Not enough digits entered
(30-second timeout)
Meter tampered –call for service
Call for service
Number expired
Call for service
Figure 5: Entering vouchers via the Customer Interface Unit
Figure 6: Typical results displayed
Normal operating mode
(includes zero credit and supply disconnected)
Number not recognized by meter
Number already used
Not enough digits entered
(30 second timeout)
Service call-out
Number expired
Power off
Meter tampered

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6.4 Prepayment Voucher Processing
Depending on the type of voucher entered into the meter, it will result in one of the display sequences
described below:
6.4.1 Incomplete Voucher
A voucher entry is timed out if no key is pressed for more than 30 seconds. On time-out:
The voucher number is cleared off the display.
The remaining credit is displayed.
The happy face icon is turned on.
The sad face icon is flashed for 10 seconds.
6.4.2 Complete Voucher
If a complete voucher is entered, the meter:
Locks the keypad.
Proceeds to process the voucher number.
Depending on the result of the processing, one of the following sequences can occur. Refer to –
6.4.2.1 through –6.4.2.6.
6.4.2.1 Voucher Accepted
A scrolling credit wedge is displayed.
6.4.2.2 Voucher Accepted as a Valid STS Key Change Number (STS Only)
Note: Two vouchers are required for a STS key change.
The scrolling credit wedge is displayed.
The key revision and key type, followed by the tariff index, is displayed during the above
scrolling sequence.
6.4.2.3 Voucher Overflow Rejection
This occurs if the voucher is valid, but rejected because the current credit register would overflow.
The following is displayed:
The happy face icon is flashed.
The sad face icon is turned on for 10 seconds.
NB: The voucher can be re-used at a later stage.
6.4.2.4 Incorrect Voucher
If the voucher is rejected, the following will be displayed:
The happy face icon is turned off.
The sad face icon is flashed for the reject time.
NB: The reject function is included to discourage the entry of random numbers in
an attempt to defraud the meter. The reject time will eventually settle at a
maximum time of 82.5 seconds.

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6.4.2.5 Duplicate Voucher
If the voucher is rejected because it has previously been entered i.e. a duplicate voucher:
Both the happy face and sad face icons are flashed simultaneously for 5 seconds.
6.4.2.6 Expired Voucher (STS Only)
If the voucher is rejected because it is older than the oldest voucher in the meter log i.e. ‘expired’:
Both the happy face and sad face icons are alternately flashed for a period of 5 seconds.
6.5 Voucher Decryption and Processing
The meter will accept vouchers in either proprietary format or STS format. Both formats cannot,
however, be active at the same time. The transfer specification is configured at the time of
manufacture.
6.5.1 STS Format
The meter accepts information transferred as specified in the Standard Transfer Specification release
1.0:1995 with key typing included. Key expiry is not implemented.
STS vouchers comprise 20-digit numbers.
The following STS voucher types will be recognised and accepted:
Electricity credit (meter-specific voucher) –6.5.1.1.
Set 1st dispenser key (meter-specific voucher) –6.5.1.2.
Set 2nd dispenser key (meter-specific voucher) –6.5.1.3.
Clear tamper (meter-specific voucher) –6.5.1.4.
Set maximum power load or power limit level (meter-specific voucher) –6.5.1.5.
Set current credit levels (meter-specific, proprietary voucher) –6.5.1.6.
Clear credit (meter-specific, proprietary voucher) –6.5.1.7.
Initiate dispenser test (non meter-specific voucher) –6.5.1.8.
Commissioning voucher (non meter-specific, proprietary voucher) –6.5.1.9.
Commissioning voucher (meter-specific, proprietary voucher) –6.5.1.10.
Decommissioning voucher (meter-specific, proprietary voucher) –6.5.1.11.
Set credit-metering mode (meter-specific, proprietary voucher) –6.5.1.12.
Set prepayment-metering mode (meter-specific, proprietary voucher) –6.5.1.13.
6.5.1.1 Electricity Credit Voucher
The electricity credit voucher transfers a variable quantity of credit to the meter.
6.5.1.2 Set 1st Dispenser Key Voucher
Key changes are occasionally carried out to maintain the security of a pre-payment system.
Unless the prepayment vending system and meter are both operating on the same key, vouchers
vended from that system will not be accepted by the meter.
To effect a key change, two vouchers (set 1st dispenser key and set 2nd dispenser key) need to be
issued and entered into the meter within a 5-minute period of each other. NB: set 1st dispenser key
and set 2nd dispenser key vouchers may be entered in any sequence i.e. the 2nd dispenser key
voucher may be entered first.
Note: Various ancillary functions e.g. clearing the meter log may be embedded into the key-
change process (refer to the STS specification).

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6.5.1.3 Set 2nd Dispenser Key Voucher
Refer to –6.5.1.2.
6.5.1.4 Clear Tamper Voucher
If a meter has been tampered, normal operation can only be restored by entering a clear tamper
voucher. Note that these vouchers also reset the power-fail counter –10.22.
6.5.1.5 Set Power Limit Voucher
This voucher sets the power limit level for the meter –6.8.
6.5.1.6 Set Credit Levels Voucher (Proprietary Voucher)
On accepting a power limit level number, the meter sets the appropriate high and low credit levels.
These are the levels at which the segments in the ‘wedge’ of the LCD credit indicator toggle –5.6.
6.5.1.7 Clear Credit Voucher
On accepting a clear credit voucher, the meter clears any remaining credit to zero and opens the
load switch, thus interrupting the electricity supply to the customer.
6.5.1.8 Initiate Dispenser Test Voucher (Meter Non-Specific Voucher)
There are a number of non meter-specific vouchers that can be used to test various functions on
the meter.
NB: These tests pertain to the meter and not the customer interface unit. They will
only be visible on meters fitted with a local display.
On accepting an initiate dispenser test voucher, the meter executes all the tests that are embedded
in that particular voucher. The following tests are supported:
Function
Voucher Number
Open the load switch
0000 0000 0001 5099 7584
HMI test - turns on all the LED’s, displays all
segments on the LCD, and activates the buzzer
0000 0000 0001 6777 4880
Display the total units counter
0000 0000 0002 0132 8896
Display the key revision number and key type
1844 6744 0738 4377 2416
Display the tariff index
3689 3488 1475 5332 2496
Display the power limit level
0000 0000 0012 0797 4400
Display the tamper state
0000 0000 0022 8172 8512
Display the instantaneous power
0000 0000 0044 2920 8064
Display the software version number
0000 0000 0087 2419 5840
Test all the above functions (tests run sequentially)
5649 3153 7254 5031 3471
In a test sequence (test all), each test has a duration of 2.5 seconds, and is performed in the above
order. For a single test per voucher, the test has a duration of 5 seconds.
On completion of the test sequence, the meter returns to its normal mode of operation.

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6.5.1.9 Commissioning Voucher (Non Meter-Specific, Proprietary Voucher)
This is a non meter-specific voucher i.e. it may be used on any STS meter:
1268 2136 5508 1001 3746
It is typically used to assist meter installation personnel by ensuring that the load remains
disconnected and the tamper detect sensing switch function disabled (meter decommissioned).
Once the installation is complete and the number entered, the load switch closes and the tamper
detect sensing switch function is enabled.
6.5.1.10 Commissioning Voucher (Meter-Specific, Proprietary Voucher)
This is a meter-specific voucher but in all other aspects its operation is the same as described in
6.5.1.9.
6.5.1.11 Decommissioning Voucher (Meter-Specific, Proprietary Voucher)
On accepting a decommissioning voucher, the meter opens the load switch (load disconnected)
and disables the tamper detect sensing switch function.
6.5.1.12 Set Credit Mode (Meter-Specific, Proprietary Voucher)
On accepting a set credit metering mode voucher, the meter commences operation as described in
7.
6.5.1.13 Set Prepayment Mode (Meter-Specific, Proprietary Voucher)
On accepting a set prepayment metering mode voucher, the meter commences operation as
described in –6.
6.5.2 Proprietary Format
The meter accepts information transferred according to the Cashpower Transfer Specification, which
comprise 16-digit numbers.
On completion of entry of a 16-digit number (other than a non meter-specific commissioning number),
the meter proceeds to decrypt the voucher –6.4.
The following voucher types will be recognised and accepted:
Credit transfer number - 6.5.2.1.
Key change number - 6.5.2.2.
Initial key change number - 6.5.2.3.
Tamper reset - 6.5.2.4.
Power limit level - 6.5.2.5.
Set credit levels - 6.5.2.6.
Reset meter (clear credit register) –6.5.2.7.
Clear log - 6.5.2.8.
Non meter-specific initiate load switch test voucher –6.5.2.9.
Non meter-specific commissioning voucher –6.5.2.10.
Meter-specific commissioning voucher –6.5.2.11.
Meter-specific decommissioning voucher –6.5.2.12.
6.5.2.1 Credit Transfer Voucher
This voucher transfers a variable quantity of credit to the meter.

Meter Operation - Prepayment Mode Released 19/31
Cashpower Three Phase V11 –User Guide © Landis+Gyr (Pty) Ltd
6.5.2.2 Key Change Voucher
As part of a key change, some variable amount of credit is embedded in the voucher. NB:
Because of the additional functionality of this voucher, there is a limited range of credit values
available i.e. a choice of 8 pre-defined values in 102.4 kWh steps.
6.5.2.3 Initial Key Change Voucher
An initial key change number is treated in exactly the same way as a normal key change number –
6.5.2.2.
6.5.2.4 Tamper Reset Voucher
If a meter has been tampered, normal operation can only be restored by entering a tamper reset
voucher. Note that these vouchers also reset the power-fail counter - 10.22.
6.5.2.5 Set Power Limit Level Voucher
Unlike STS, there are a limited number (16) of pre-defined current limit settings available on the
proprietary format:
0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70 and 100 Amps.
A value of 0 disables the power limiting function.
NB: These current limit values get converted to an equivalent power limit value based on the
nominal system voltage personalized into the meter at the time of manufacture. Although the
meter will disconnect the customer’s load when the measured power limit threshold is exceeded,
variations in line voltage will result in this happening at proportionately different current levels.
On accepting a power limit level number, the meter loads the appropriate power limit level in amps
from the power limit table and converts it to Watts by multiplying by the nominal system voltage (as
indicated on the meter label).
Note: It is possible to configure the meter at the time of manufacture to display the
power limit setting in either Amps or Watts when viewed via the information
registers –10.11 and 10.19
6.5.2.6 Set Credit Levels Voucher
On accepting a set credit level number, the meter sets the appropriate high and low credit levels.
These are the levels at which the segments in the ‘wedge’ of the LCD credit indicator toggle –5.6.
6.5.2.7 Reset Meter (Clear Credit Register) Voucher
On accepting a reset meter voucher, the meter clears any remaining credit to zero and opens the
load switch, thus interrupting the supply to the customer.
6.5.2.8 Clear Log Voucher
On accepting a clear log number, the meter clears all existing log entries and the log starts afresh.
6.5.2.9 Non Meter-Specific Initiate Load Switch Test Voucher
On accepting a non meter-specific initiate breaker test voucher, the meter opens the load switch for
a short period of time (factory-defined setting of approximately 15 seconds) and then returns to
normal operation.
The non meter-specific initiate breaker test voucher number is:
9999 9208 1566 9249

20/31 Released Meter Operation - Prepayment Mode
© Landis+Gyr (Pty) Ltd Cashpower Three Phase V11 –User Guide
6.5.2.10 Non Meter-Specific Commissioning Voucher
This voucher is typically used to ease the meter installation process by ensuring that the load
remains disconnected and the tamper detect sensing switch function disabled (meter
decommissioned). Once the installation is complete and the number entered, the load switch
closes and the tamper detect sensing switch function enabled.
The non meter-specific commissioning voucher number is:
9999 9999 9997 1939
6.5.2.11 Meter-Specific Commissioning Voucher
This is a meter-specific voucher but in all other aspects its operation is the same as described
in6.5.2.10.
6.5.2.12 Meter-Specific Decommissioning Voucher
On accepting a decommissioning voucher, the meter opens the load switch (load disconnected)
and disables the tamper detect sensing switch function.
6.6 Commissioning and Decommissioning the Meter
The function of being able to set the meter into the decommissioned / commissioned mode offers
several advantages to meter installation personnel. If power is applied to the meter during installation
and the meter terminal cover not yet in place, the meter will detect this and enter into the tampered
mode, thereby disconnecting the supply to the customer. A meter-specific tamper reset voucher then
needs to be generated at the vending system to rectify the situation.
When setting the meter into the decommissioned mode, the following occurs:
The tamper detect sensing switch function is disabled.
The load switch is set into the open state.
When setting the meter into the commissioned mode, the following occurs:
The tamper detect sensing switch function may be either enabled or disabled.
The load switch operates as normal.
The meter’s commissioned / decommissioned status can be observed in the meter state register –
10.17.
6.7 Display Total Units or Remaining Credit at the Meter
This option (configurable at the time of manufacture) is provided for installations where the meter
has a local display and is required to be visually read by a meter reader i.e. the only significant
reading required would be the total units –not the normal remaining credit, which is only of interest
to the customer. Only the meter display will show the total units. The customer interface unit will
continue to reflect remaining credit.
The status of this function can be observed in the meter option register –10.19.
6.8 Power Limiting
The power-limiting feature allows utilities to set the maximum load that can be drawn by customers.
The setting can be changed when necessary via a set power limit voucher from the prepayment
vending system.
Eskom specification SCSSCAAA9 makes specific reference to a power-limiting algorithm. This
algorithm is included in the meter’s software and is implemented as follows:
If the preset power limit threshold is exceeded, the load switch will open for a period of 30s, after
which it will re-close (either automatically or manually 6.9). If the power limit threshold continues
to be exceeded, the above process is repeated. If, after 4 power-limit events within a 15-minute
window, the limit is still being exceeded because of excessive energy consumption, the load switch
will be opened for a period of 30 minutes (the power limit lockout period). At the end of the lockout