RATING: ABT

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Author:
pascual
ID:
3883
Filename:
RATING: ABT
Updated:
2010-01-07 22:49:06
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  1. What voltage will the A-2 ABT shift to alternate power?
    81-69 volts
  2. What voltage will the A-2 ABT shift to normal power?
    98-109 volts
  3. What is the time delay for the power to transfer?
    .3 to .5 second (1C and 2C)
  4. 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.
  5. What contact connects and disconnects SE relay?
    1Va1
  6. What energizes and de-energizes the 4V relay ?
    SEb1 and SEb2
  7. What contacts energizes TS coil?
    • 4Va1 from normal to emergency
    • 4Vb1 from emergency to normal
  8. What contacts disconnects TS coil?
    • TSa4 and TSa5 from normal to emergency
    • TSb4 and TSb5 from emergency to normal
  9. What contacts complete the emergency source circuit?
    TSb, TSb1, and TSb2
  10. What contact complete the normal source circuit?
    TSa2, TSa1, and TSa3

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