IQ 100 Series (130/140/150) Meter
Programming the IQ 100 Series Using Software
58 User and Installation Manual IM02601003E-July 2010 www.eaton.com
Configuring Settings
The following sections contain detailed instructions for configuring the Device Profile settings. All of the
settings are reached from tabs at the top of the Device Profile screen.
Configuring Scaling
Use this setting to configure Current Transformer and Potential Transformer ratios and to select the
Wiring (System Hookup).
Functional Overview of CT and PT Ratios:
Current and Potential Transformers are used mainly for the following reasons:
To insulate, and as a result isolate, the meter from high-voltage circuits
•
To change the primary voltage and current to standard values and sizes that the meter can measure.
•
The CT and PT transformers deliver fractions of the primary voltage and current to the meter. With
properly set ratios and multipliers, the readings of the meter can be used to determine the energy,
voltage, current, or power of the system.
This setting is the first screen displayed when you open the IQ 100 Series Device Profile. If you have
been on another screen, click the Scaling tab to re-display this screen. The screen fields and acceptable
entries are as follows:
CT Ratios
CT Numerator (Primary): 1 - 9999
CT Denominator (Secondary): 5 or 1 Amp
NOTE: This field is display only.
CT Multiplier (Scaling): 1, 10 or 100
Current Full Scale: Display only.
PT Ratios
PT Numerator (Primary): 1 - 9999
PT Denominator (Secondary): 40 - 600
PT Multiplier (Scaling): 1, 10, 100, or 1000
Voltage Full Scale: Display only.
System Wiring
3 Element Wye; 2.5 Element Wye; 2 CT Delta
Example Settings:
For a CT of 2000/5A, set the following CT Ratios in the entry fields:
CT Numerator (Primary)
2000
CT Denominator (Secondary)
5
CT Multiplier
1
The Current Full Scale field will read 2000.
NOTE: You can obtain the same Current Full Scale by entering a CT Numerator of 200 and a CT
Multiplier of 10.
