Single Phase Split-type Prepayment Wireless Energy with RF
communication Module
Quick Detail:
• Split prepayment meter, significantly reducing the possibility of
fraud and bypassing
• Compact meter (EMU) design
• Proven keypad technology
• Programmable operating modes:
1. Prepayment
2. Credit metering
• Galvanically isolated communication to CIU for consumer safety
• Tamper detection
• Significant Reverse Energy (SRE) detection
• Programmable software power limit
• Advanced commissioning / decommissioning feature
• STS Complaint
• Language independent user interface
• Optional large LCD and keypad at the EMU
• Improved sealing against ingress of insects
• Easy to see diagnostic LED’s on the EMU for Meter state
indication and communications
• High surge withstand capability for areas prone to lightning or
other line surges
Description:
Principle of Operation: Meter Modes
The XILI prepayment meter range provides utilities with the utmost
flexibility in terms of being able to adapt to a range of different
consumer profiles. Two, utility-programmable modes of operation are
available and it is possible to switch between modes as required:
• Prepayment Mode
• Credit Mode
Prepayment Mode
In prepayment metering mode, it functions as a normal prepayment
meter. Credit tokens are purchased and entered into the meter via
the customer interface unit keypad. On expiry of credit, the load
is disconnected and will only be re-connected when a valid credit
token, purchased by the consumer, is entered.
Credit mode
In credit metering mode, it functions as a conventional credit
meter. Power is continuously supplied to the consumer and total kWh
used is continuously measured and recorded. The meter must be read
by the utility at regular intervals and the consumer billed
accordingly.
Split prepayment meter Product Brochure
User-friendly customer interface
User interaction with the meter and access to meter information
(such as a low credit warning, energy consumption, and load
contactor status) is available using the customer interface’s
keypad and large LCD display.
The customer interface makes use of clear, language independent
icons. In addition, audible tones are sounded under different
conditions (e.g. Low Credit Alarm).
As an option, the meter can be supplied with a local keypad and LCD
display. This allows the utility staff to inspect and update
various parameters of the meter in the remote kiosk without having
to gain access to the consumer’s house to access the customer
interface unit.
Tamper detection
The split configuration of Gemini meters significantly reduces the
risk of tampering. The meter is installed in a remote, secure
location and a utility-sealed wire seal on the front of the meter.
The use of these mechanical seals ensures that there are visible
signs of tampering if unauthorized entry to the system is
attempted. In addition, the units are equipped with a terminal
cover tamper sensor that will automatically disconnect the power to
the load in the event of tampering.
Meter status and diagnostic indicators
The meter includes a LED status indicator. This allows a technician
to view the state of the meter without the need for specialized
interrogation tools or having to gain access to the consumer’s
premises. Information such as tamper status, power limiting,
commissioned status and credit status are available. The meter also
features a dedicated diagnostic LED for indicating the status of
the customer interface unit communications. It can indicate the
presence of “Open” or “short” circuited communication lines. This
is a valuable visual aid that assists the technician to validate
the installation and determine probable fault types.
