• A card dispensing unit is located at main office of NTESCL This system reads/write data from the card and generate various reports useful for the management. In addition to this it will keep an account of all the transactions taking place at the dispensing Centre.
  
  
• CMS Make Pre-Paid Energy meters will be installed at each user's connection point.
  
  
• All applications for prepaid connections would be used to create individual customer database.
  
  
• Personalised Smart Card will be issued to the consumer through the Card Dispensing unit.
  
  
• All further purchase of power will be on a prepaid basis, which must not be less than a pre-determined slabs.
  
  
• The consumer can purchase power at any time and keep the meter charged ( this balance units will be displayed on the meter)
  
  
• The meter will give warning beeps when the balance reaches a threshold value.
  
  
• In case the balance power reaches zero the power supply will be automatically disconnected or grace power can be given as decided by NTESCL.
  
  
• Supply can be restored by inserting a card charged by the Dispensing unit after payment of penalty etc. under NTESCL discretion.

• All the collection will be in advance this will help generate the desired funds and avoid the process of billing and outstanding Collection.
  
  
• NTESCL will have a ready database on all connections for each zone/Circle/Division/Subdivision for MIS information and necessary action.
  
  
• A daily/monthly report will be generated on collections thus giving a first hand information to the management on the power sold v/s money received from each collection centre.
  
  
• Information will be generated by the software on consumers due for repurchase.

The PPEM supplied shall be fully electronic, programmable, single slab /multi-slab tariff type. Electricity consumption shall be directly measurable by it viz. It shall be whole current type for direct connection to consumer terminals.

• The PPEM unit is comply to accuracy requirement of Class 1.0 Static energy PPEM as per IS : 13779 (IEC 61036).
  
  
• The PPEM unit will be having a microprocessor containing the software, a smart card module and will provide a relay output to power contactor to connect and disconnect the single phase/ 3 phase consumer depending on the credit available.
  
  
• Each PPEM unit will have a unique identification code, which shall be marked permanently on its front cover, as well as in its memory.
  
  
• The PPEM unit is capable of measuring active energy (kWh), maximum demand in KVA, kW, line current, voltage, power factor and frequency ( Parameters will depend on the model supplied ).
  
  
• The PPEM unit on acceptance of smart card, will be credited with units purchased and this credit will be added to the balance credit in the PPEM and the total credit displayed by the PPEM.
  
  
• The PPEM unit will be debited based on the usage of electricity and tariff rate at the time of consumption. It will have rate and slab registers for multi tariff billing system, as required.
  
  
• A utility programmable low credit warning will be available in the PPEM unit when the remaining credit falls below pre-.specified level, an audible alarm will sound to alert the consumer for buying more electricity. Visual indication shall also be available continuously under low credit situation.
  
  
• Provision for a utility decided emergency credit level is available viz. the credit is allowed to a pre decided level before disconnecting.
  
  
• The PPEM unit is capable of reading and recording consumption with appropriate accuracy even in cases of reverse currents, swapping of phase and neutral and load drawn through a local earth, extreme voltage levels and variation in frequency levels.
  
  
• The PPEM is having an LCD for displaying information. The default information is the display of credit remaining to the consumer. Additional display options shall also be available.
  
  
• Provision for cutting off loads at a preset level shall be available.

• The smart card supports electricity credit loading from the refilling machine to the smart card.
  
  
• The smart card is programmable with consumer description, electricity credit purchased and other required particulars.
  
  
• The data on the smart card is encoded to ensure security.
  
  
• The smart card is specific to the meter for which it is intended. In the event of loss or card i.e. new card being issued for the same meter, the meter accepts only one as valid.

Smart Card Refilling Stations will be provided at NTESCL/ other locations as required. The refilling station is Personal Computer (PC) based equipped with appropriate hardware and software, encryption facilities, smart card readers and writers. The refilling station accepts identified information/ instructions from Main Station also. Provision is made for sales report generation in a period of time say 1 day / 7 days / 15 days/ 1 month, shall be available for use by the utilities.

It programs the smart card with:

- Date and time of issue
- Security code
- Number of units purchased
- Customer identification number
- Meter number
- Any other information required by NTESCL

Adequate security levels are built in the system to:

- Prevent fraudulent programming of cards
- Detect tampering of programmed cards
- Detect faulty cards

It is capable of creating data base for each new customer with the following information :

- Customer identification number
- Date and time of installation
- Serial number of meter
- Accuracy class
- Current range of meter
- Make
- Model
- Category of service
- Applicable tariff
- Security code
- Service charges paid
- Document reference
- Purchase History

Adequate backup power in the form of suitable UPS with 3 hours back up shall be provided at the refilling station as well as main station.

The main station is the centralised utility system for overall energy accounting and customer record management.

The main station will be installed at the designated office of the NTESCL and will be used to consolidate the data handled by refilling station. Data from refilling station is transferred to main station online.

It has necessary hardware and software to provide management reports for preparing data files that update the consumer and meter parameters such as tariff, emergency or credit limits and other data as decided by NTESCL.

It has facility for customer data base management e.g. customer identification, detailed addresses of the customers sanctioned load, electricity dispenser serial no., date of installation and other particulars required by the main station.

It is capable of registering new customers and removing old customers from the system.

It has edit facilities for defining and generating programs for tariff changes, date of enforcement, categories to which applicable.

The security levels are built-in depending on operation security level declared by the utility and the communication links between the refilling Stations and the Main Station shall be completely secured and fully encrypted.