In 1968 Dow-Key was purchased by Kilovac Corporation, a high voltage relay manufacturer, and relocated to Kilovac's Headquarters in Carpinteria, California.
2.
After a variable time delay ( to reduce simultaneous inrush current ), over-voltage relays will re-shut the track circuit breakers on the non-faulted track.
3.
A 24-volt electrical power supply came from a 1 kW GT-4563A generator with a RRA-24 voltage relay regulator unit and four 6STE-128 accumulator batteries with a total capacity of 256 ampere-hours.
4.
Other protective equipment includes the voltage relay ( which trips if the voltage in the high-voltage circuit falls below 2400 V ), the dynamotor / compressor overload relay, the heating circuit overload relay, and the automatic control shutoff switch.
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