Reliable Single Phase Electronic Electric Meter , High Accuracy Smart KWH Meter

Reliable Single Phase Meter , High Accuracy Smart KWH Meter For AMR / AMI System

Technical Features:

• Take advanced professional integrated circuit and SMT, hot air reflow soldering and wave soldering as technical design, which can make sure of reliable quality.
• Take three units isolated power for metering unit, data processing unit and communication interface unit. All the output signals are handled by optoelectronic isolation, which can increase Electromagnetic Compatibility, and also confirm the stable working for metering unit, that will not influence by communication interface.
• Build in “Watch Dog” design for microprocessor, to promise for the well working of CPU. Triple backup for metering data. The data are safe even in harsh conditions.
• Fully sealed dustproof and waterproof design, material of cover has excellent flame retardant and anti-corrosion, anti-aging properties.
• Build in clock circuit with temperature compensation function, the function can also work when power off and get power source from battery, to make sure of the high processing precision of clock.
• With standard interface of carrier communication module, the meter can work with different carrier modules.
• With protection card interface for IC card, and also support for CPU card.

Specification:

Remarks: Special pulse constant can be customized as inquire.

Main Parameters:

Consumption: Voltage Circuit Consumption(Out of Communication Status) ≤1.5W, 10VA

Voltage Circuit Consumption(Under Communication Status) ≤3.0W, 12VA

Current Circuit Consumption ≤1VA(Ib)

Working Temperature: -25℃～60℃

Maximum Working Temperature: : -40℃～70℃

Maximum Storage and Transportation Temperature: -40℃～70℃

Relative Humidity: Annual Average＜75%

Normal Working Pressure: 0.9Un～1.1Un

External Working Pressure: 0.8Un～1.15Un

Maximum Working Pressure: 0.0Un～1.15Un

Clock Accuracy: ≤0.5S/D (Reference Temperature 23℃)

Capacity of Li-Ion Battery: ≥1.2Ah, the working time since power off≥ 5 years.

Data Storage Period ≥ 10 years

Life Time ≥ 10 years

Dimension: 112*160*71 mm

Weight: 0.8kg

Pulse Width: 80±20mS, Typical 80mS

Communication Rate for Optical: 1200bps

Communication Rate for RS485: 2400bps (Typical Value)

600bps, 1200bps, 2400bps, 4800bps, 9600bps (Can be set)

Safety precautions:
＊ Use only isolated tools.
＊ Do not connect the meter to a 3 phase - 415V AC - network.
＊ Place the meter only in dry surroundings.
＊ Make sure the used wires are suitable for the max current the meter can measure.
＊ Make sure the AC wires are installed correctly before activating the current/voltage.
＊ Do not touch the meter connecting clamps directly with your bare hands, with metal, blank wire or other material as you will have the chance of an electricity shock and a possible chance for health damage.

＊ Do not through, drop, kick or other physical violence to the meter as there are high precision components inside that will break or make the meter measure inaccurate.
＊ Do not mount the meter in area's with harm gas, dust, mildew or insects or on unstable surfaces.