What information do I need from the utility company to get accurate results in EasyPower?

The following are some questions you might ask of your utility company when gathering information for a power system study. Including this information in your study helps to ensure you get accurate results from Easypower.

Three-phase short circuit MVA and X/R ratio at the transformer primary for each incoming service if they are different.

3-phase MVAsc: ____________________

X/R Ratio: ____________________

Single line-to-ground short circuit MVA and X/R ratio at the transformer primary for each incoming service if they are different.

SLG MVAsc: ____________________

X/R Ratio: ____________________

Nominal, lowest, and highest kV at the point of service during the last 2 years.

Phase overcurrent relay for each service: ____________________

Manufacturer and type: ____________________

CT and settings: ____________________

(If the protective device is a fuse, please provide the fuse type and size.)

Ground overcurrent relay for each service.

Manufacturer and type: ____________________

CT and settings: ____________________

If there are transformers that belong to the utility, please provide information for each transformer.

Transformer rating: ____________________

Impedance: ____________________

Type of cooling (OA/FA): ____________________

Temperature rating (55 C/65 C): ____________________

Connection type: ____________________

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