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2.5: Nexus
1262/1272 Meter Specifications Overview
®
Sense Input Voltage
•
Rated 0 to 332 Volts line-to-neutral; 0 to 480 Volts line-to-line.
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Operating 96 to 332 Volts line-to-neutral; 155 to 576 Volts line-to-line.
Input Voltage - Self-Powered Option Power Supply
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Rated 96 to 332 Volts line-to-neutral; 155 to 576 Volts line-to-line.
Input Voltage - Low Voltage Power Supply
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Rated 30 to 90 Volts line-to-neutral; 52 to 155 Volts line-to-line.
Input Current
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Transformer Rated Continuous 120% of meter class.
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Defined as Class 20 (Class 2 and Class 10 Available).
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Nominal current rating: 5A for Class 20 and 10 meters; 1A for Class 2 meters.
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Overload 500% for 1 second, non-recurring.
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Three or four current inputs depending on form (I
Frequency
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45-62 Hz.
Burden (Sense Inputs)
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Voltage Inputs: 0.33VA@576V.
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Current Inputs: 0.0125VA@25A.
Isolation
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All inputs and outputs isolated to 2500 Volts.
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Com Ports isolated from each other to 1000 Volts.
Sensing
•
Accu-Measure
TM
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2x16-bit A/D converter (1272). 1x16-bit A/D Converter (1262).
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True RMS.
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8-Channel Sample and Hold.
Memory
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All meter setup parameters, measurements and logs contained in nonvolatile RAM.
Compliance
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ANSI C12.20 Class 0.2 and IEC60687 (Accuracy).
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ANSI C37.90.1 (Surge Withstand).
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ANSI C62.41 (Surge Immunity).
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ANSI C12.18 (Optical Port).
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IEC 61000-4-15 (Flicker) (1272).
Standard Communications
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LCD Display.
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ANSI Type 2 Optical Port (IR Port).
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Two RS485 Serial Ports.
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Modbus RTU, Modbus ASCII and DNP 3.0 protocols.
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Data Speeds of up to 115k bps.
Optional Communications
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INP2: Internal Modem with data buffering for faster downloads and noise rejection.Connect
speeds of 300 to 56k bps.
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INP200: Internal 10Mbit Ethernet.
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INP202: Ethernet (INP200) / Modem (INP2) Combination
Electro Industries/GaugeTech
Technology.
Doc # E151701
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