Landis & Gyr Cashpower Three Phase, User Manual

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20/31 Released Meter Operation - Prepayment Mode
© 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