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What voltage will the A-2 ABT shift to alternate power?
What voltage will the A-2 ABT shift to normal power?
What is the time delay for the power to transfer?
.3 to .5 second (1C and 2C)
What is the purpose of the time delay?
to prevent uncessary transfer of power during line voltage sruges and very short duration losses of power.
What contact connects and disconnects SE relay?
What energizes and de-energizes the 4V relay ?
SEb1 and SEb2
What contacts energizes TS coil?
- 4Va1 from normal to emergency
- 4Vb1 from emergency to normal
What contacts disconnects TS coil?
- TSa4 and TSa5 from normal to emergency
- TSb4 and TSb5 from emergency to normal
What contacts complete the emergency source circuit?
TSb, TSb1, and TSb2
What contact complete the normal source circuit?
TSa2, TSa1, and TSa3
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