Three phase starter used for 1 phase motor

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For control wiring, I have seen an online diagram (not sure if it applies to this starter model) from cutler hammer that for control schematic suggest terminating A2/ load side of contact coil to overload terminal 95 and overload contact 96 to neutral


For motor connection, neutral of motor terminates to L3 and then comes out T3 then a jumper from T3 connects to T2 for a series connection and from T2 to neutral

Does this sound right because I originally thought to power L1, cone out to T2 to motor power line wire. Then terminate neutral to L3 come out to T3 to motor neutral wire. In this case L2 and T2 have no connection?
 
Jpflex said:
For control wiring, I have seen an online diagram (not sure if it applies to this starter model) from cutler hammer that for control schematic suggest terminating A2/ load side of contact coil to overload terminal 95 and overload contact 96 to neutral


For motor connection, neutral of motor terminates to L3 and then comes out T3 then a jumper from T3 connects to T2 for a series connection and from T2 to neutral

Does this sound right because I originally thought to power L1, cone out to T2 to motor power line wire. Then terminate neutral to L3 come out to T3 to motor neutral wire. In this case L2 and T2 have no connection?
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That's fine for single phase if you do not use the overload block. You could if the motor has internal overload protection. Newer OLs will sense an imbalance of current and trip. That is why it is suggested to loop through two of the overloads with the second conductor, be it a hot or neutral.

Newer yet may have settings to ignore current imbalance.
 
petersonra said:
They do not work that way. If the ol is tripped the no contacts are closed. They are meant to be an alarm signal.
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This style relay has two independent contacts, there is no common connection. So whatever, like dust build up is jamming one set may also be jamming the other.
 
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petersonra said:
Even if the ol relay is bad one set of contacts is no and the other nc.
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Not all OL relays come with the NO contacts, for some it is an add-on accessory.

If the OL relay is in a TRIPPED state, the 95/96 contacts will show as open. Many bands of relays ship from the factory in a Tripped state, because they were tested right before being packaged. You have to press the Reset button the first time you use them.
 
Jraef said:
Not all OL relays come with the NO contacts, for some it is an add-on accessory.

If the OL relay is in a TRIPPED state, the 95/96 contacts will show as open. Many bands of relays ship from the factory in a Tripped state, because they were tested right before being packaged. You have to press the Reset button the first time you use them.
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I think all iec style overloads have alarm contacts
 
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