What electrical power voltage, frequency and plug configuration is
standard in New Zealand?

Hi bill2002:

Thanks for the electrifying question. ;-) 

The following page lists the standard voltage, frequency and plug
configuration for countries around the world:

WORLD ELECTRIC GUIDE 
http://kropla.com/electric2.htm

You will note from the table that in New Zealand, the values are:

Voltage: 230 V
Frequency: 50 Hz
Plug Configuration: Type I (http://kropla.com/!i.htm)

I hope this information is of assistance to you. :-)

Thanks for using Google Answers. 

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