Current transformers

• To: tesla-at-pupman-dot-com
• Subject: Current transformers
• From: kd4lyh-at-webtv-dot-net (Jeffery Pederson) (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Wed, 06 Oct 1999 19:40:21 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Im using an a.c ammeter with a current transformer to moniter my primary
current to my pig the meter has multiple scales im using the 0-50 amp
scale (0-5amp full scale deflection) My question is what ratio of
current transformer to use ? Im using a 50:5 ratio current transformer
right know but i think the meter isnt reading the correct current. IT
says im drawing 20 amp with the welder on it lowest setting. I dont have
an a.c amprobe to see if this is corr  ect , Im going to invest in one
to investigate this matter further. Is the 50:5 ratio correct. My
current transformer is a instruments  transformer inc. cat.#2SHT500,
50-400 Hz, the arc welder is a Lincoln A.C. 225s, the transformer is an
Epoxy Cast High Voltage type 23,000Volts at  37.5K.V.A 
I have a dedicated circuit just for running tesla coils up to about
14KVa. wish I had more room. Any help would be appreciated. Thankyou

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