I-210 Key Features and Benefits

2. I-210 Key Features and Benefits • Uncompromising GE performance and commitment to excellence in metering • Unique simplified sensor design and mechanical construction for reliability • Promotes equitable customer billing through stable, accurate, State-of-the art electronic design • Low Starting watts captures energy consumption at levels not registered by electromechanical meters • Low Burden minimizes utility system losses • Tamper-Resistant design minimizes theft-of service. Programmable to register energy when meter inverted. • Large Easy to read LCD display minimizes reading errors

3. I-210 Key Features and Benefits • Operates over a broad temperature range –40C through +85C • Factory programmable minimizes handling and boosts operational efficiency • Compatible with existing I-70 cover stock to minimize Utility cover inventory • Compact, cost-effective construction saves space and simplifies installation handling • Performance meets or exceeds industry standards (ANSI C12.1, C12.10, C12.20, C37.90.1) • Models available for 120 or 240 volt Cl20, cl100, Cl200, Cl320 applications. 50 or 60 Hz operation • Compatible with existing utility operational practices

4. GE Superior Technology • Display • Current Measurement Technology • Calculation of the watt • Review of hardware components • ANSI Compliance • Functionality in support of AMI Technologies • External interfaces and programming

5. 1 3 2 4 Meter Display • kWh Energy Measurements can be measured in 4 ways - (Received Only, Delivered Only, Deliver + Received, Deliver – Received = net) • Display of Energy configurable to 4 or 5 digits • Factory Option of instantaneous power is displayed on LCD 1. kWh Display -- Selectable 4 or 5 digit Presentation 2. Energy Flow Direction indicators 3. Disk analog -- indicates Energy flow rate 4. Selectable 3-digit display of Instantaneous Power (kw)

6. Current Measurement Technology • The base assembly of the GE type I-210 meter is characterized by a simple, robust construction designed for high reliability, long life, and high performance • Primary current conductors are large and robust and have no joints. • Each conductor and associated terminal blades are formed from one continuous piece of copper for maximum reliability

7. Current Measurement Technology • A single current transformer combines the two primary conductor currents and scales the result to provide a single signal suitable for processing by the electronics. • The CT has a very constant magnitude ratio over a wide range of currents and operating conditions, such as temperature variation. • It also combines good tolerance to any DC components in the load current with relatively small and constant phase shift.

8. f 1 f Current AC Load Sensor Line A/D Converter Meter chip D S 2 Channel - LCD Micro controller 8 Bit DC to 99999 Power Supply Circuits kWh 120 - 240V (57 - 120V) Optical Port - PSEM EEPROM EEPROM 128 byte Data & Program Data & Program Parameters Calculation of the Watt

9. Review of Hardware Components Sensing Devices: • A current transformer that feeds the scaled current signals to the meter chip senses current. Meter Chip: • The Meter chip contains two independent, fully integrated analog to digital converters, one each for current and voltage signal. The meter chip integrates the product of voltage and current over small intervals and also accumulates the energy in a register. Micro controller: • The micro controller is an 8 bit single chip. It reads the accumulated energy over momentary intervals from the meter chip and maintains the energy consumption for display. It uses the non-volatile memory on the board to store the metered data and metering parameters.

10. Review of Hardware Components Nonvolatile Memory: • The I-210 meter is equipped with non-volatile memory devices, which is used to store the metered data, calibration parameters, configuration constants and the program parameters. Power Supply: • The I-210 Meter is powered from the voltage line. It has an operating range of –20% to +10% of rating. Versions are available for either 50 Hz or 60 Hz operation as specified at time of order.

11. ANSI Testing and Compliance • The use of advanced current transformer designs and materials enables a high level of performance in several ways. The meter load curve characteristic can meet the demanding requirements of ANSI standard C12.20 accuracy class 0.2 due in part to the constant magnitude and phase characteristic of the CT over a wide current range • ANSI C12.19 Compliance - I-210 cannot be programmed or read by user via optical link so no need to strictly comply with ANSI C12.19.

12. Functionality in Support of AMI Technologies • GE continues to work with 3rd party suppliers of communication systems to integrate AMR technology into its metering platforms. • Formal agreements are in place with major systems providers. Some of them cannot be published because of NDA. • Current plans are to have the I-210 equipped with Itron AMR capability during the 4th quarter of 2004.

13. External Interfaces and Programming Does a customer need any additional software, tools, or accessories to reset the I-210? • Yes. A general requirement of many utility customers is to have the capability to set accumulated meter kilowatt-hour registration to zero in the meter shop. To facilitate this requirement, a customer must purchase from GE an “I-210 Reset adaptor” accessory (GE Part# 103x163001). Additionally, a customer must use this accessory in conjunction with GE Metermate (release 5.1 or higher). Metermate includes a command function within its menu structure to electronically the reset the accumulated kwh within the I-210 meter to zero.