Eaton IQ 250, User & Installation Manual

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Chapter 2:
IQ 250/260 Meter Overview and Specifications
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Overview and Specifications
IQ 250/260 Overview
The IQ 250/260 is a multifunction power and energy meter designed to be
used in electrical substations, panel boards, and as a primary revenue
meter, due to its high performance measurement capability. The unit
provides multifunction measurement of all electrical parameters and makes
the data available in multiple formats via display, communication systems,
and through analog signal transmission.
Figure 2.1: IQ 250/260 Meter
The IQ 250/260 meter is designed with advanced meaurement capabilities, allowing it to achieve
high performance accuracy. It is specified as a 0.2% class energy meter for billing applications
as well as a highly accurate panel indication meter.
The IQ 250/260 provides additional capabilities, including standard RS485, Modbus and DNP 3.0
Protocols, and Option cards that can be added at any time.
Features of the IQ 250/260 include:
• 0.2% Class revenue certifiable energy and demand metering
• Meets ANSI C12.20 (0.2%) and IEC 687 (0.2%) classes
• Multifunction measurement including voltage, current, power, frequency, energy, power
factor, etc.
• Power quality measurements (%THD and Alarm Limits) IQ 260 only
• Percentage of Load Bar for analog meter reading
• Easy to use faceplate programming
• RS485 communication
• Optional I/O Cards - field upgradeable without removing installed meter
In addition to the IQ 250/260M - meter with integral
display/transducer configuration, an IQ 250/260T transducer
configuration is available. The IQ 250/260T is a digital transducer
only unit (without a display), providing RS485 communication
via Modbus RTU, Modbus ASCII or DNP 3.0 protocols.
The IQ 250/260T is designed to install using DIN Rail
Mounting. (See Chapter 3 of this manual for IQ 250/260T
mounting information.)
Figure 2.2: IQ 250/260T