Reply to "PW-ZW Transformer ampere capacity"

ADCX RobOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

JD2035RR posted:
ADCX Rob posted:
chris a posted:
My question, does one have the same inadvertent connection mis-matched voltage problem with a train crossing "Blocks" if the the (2) two block power sources are from the "A" throttle on two (2) different PW - ZW transformers ? ...
Yes, with regard to the damage potential to the equipment, but not to the secondary windings on the ZW.
Sorry if the answer to this is obvious, but will a quick acting breaker on each of the variable lines trip when voltage is mismatched, bridged, and subsequently spiked going block to block? Thank you.
JD

No. A magnetic, or other fast acting breaker, will only trip when the threshold current is exceeded in that circuit.

TVS use is recommended to clamp voltage spikes.

You need two types of protection - one for over current, the other for over voltage.

12/31/1712:13 AM

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