IQ 100 Series (130/140/150) Meter
Programming the Meter Using the Front Panel
54 User and Installation Manual IM02601003E-July 2010 www.eaton.com
Performing Watt-Hour Accuracy Testing (Verification)
To be certified for revenue metering, power providers
and utility companies must verify that the billing energy
meter performs to the stated accuracy. To confirm the
meter’s performance and calibration, power providers use
field test standards to ensure that the unit’s energy
measurements are correct. Since the IQ 100 Series meter is a
traceable revenue meter, it contains a utility grade test pulse
that can be used to gate an accuracy standard. This is an
essential feature required of all billing grade meters.
• Refer to the figure below for an example of how this process works.
• Refer to the table below for the Wh/Pulse Constants for Accuracy Testing.
Infrared & KYZ Pulse Constants for Accuracy Testing - Kh Watthour per pulse
Input Voltage Level
Class 10 Models
Class 2 Models
Below 150V
0.2505759630
0.0501151926
Above 150V
1.0023038521
0.2004607704
NOTE: Minimum pulse width is 90 milliseconds.
Using the Watt-Hour Test Pulse
Watt-Hour
Test Pulse