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how to connect transformer

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Posted on March 9, 2017 at 19:07:47
8086
Audiophile

Posts: 57
Joined: December 23, 2007
I have a transformer I'm not sure how to connect, and am not sure how to read the connection diagram. Could someone provide guidance? I don't want to damage it by connecting it wrong. Is this suggesting parallel or series connection? Also, any guidance on phasing? Im using this as a guide and somewhat lost. http://www.hammondmfg.com/5CHook.htm




 

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RE: how to connect transformer, posted on March 9, 2017 at 19:43:12
dave slagle
Manufacturer

Posts: 4754
Location: NYC
Joined: April 27, 2001




It is a dual primary transformer. I labeled the pins 1-4 . Pins 1&3 are one primary winding and pins 2 & 4 are the other.

First confirm that there is a DC resistance between 1&3 and 2&4 and that there is no connection between the even and odd numbered pins.

For 115V operation connect 1&2 and connect 3&4
For 230V operation apply voltage to 1&4 and jumper 2&3

dave

 

how to connect transformer, posted on March 9, 2017 at 20:07:40
8086
Audiophile

Posts: 57
Joined: December 23, 2007
Dave,

Thanks so much!! So 1 and 4 both get the hot side and 2 and 3 both get neutral, correct?

Out of curiosity, is that center marking a standard sign for neutral? I haven't seen that before?

 

RE: how to connect transformer, posted on March 9, 2017 at 22:22:06
Triode_Kingdom
Audiophile

Posts: 5808
Location: Texas
Joined: September 24, 2006
The marking in the center isn't a symbol. It's just showing how the wires from terminals 2-3 connect to their respective windings.




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RE: how to connect transformer, posted on March 10, 2017 at 05:58:27
dave slagle
Manufacturer

Posts: 4754
Location: NYC
Joined: April 27, 2001
I didn't ever say to do that.... I guess the next thing I should say is get an ammeter, variac and a fuse since the hookup you described mayl draw a lot of current and cause some sort of failure.

You haven't stated what voltage you are trying to wire it for so I will say it again.

first confirm continuity of the wires and that 1&3 are a pair and 2&4 the other.

For 115V operation connect 1&2 for hot and connect 3&4 for neutral
for 230V operation 1 is 0V 3 gets connected to 2 and insulated and 4 is 230V/

dave

 

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