1-10 Definitions

Question 1

Master Element

Answer 1

Initiating device to place equipment in or out of operation

Question 2

Time delay starting or closing Relay

Answer 2

Gives a desired amount of delay between operations in an automatic sequence

Question 3

3

Answer 3

Reserved for future application

Question 4

Master contactor or Relay

Answer 4

Generally controlled by Device #1 to place equipment into operation under the desired conditions and to take it out of operation under other or abnormal conditions

Question 5

Stopping device

Answer 5

Primary function is to place and hold equipment out of operation

Question 6

Starting circuit breaker contactor or switch

Answer 6

Principal function is to connect a machine to its source starting voltage

Question 8

Control power Switch

Answer 8

Manually operated switch or circuit breaker used for the express purpose of connecting and disconnecting the source of control power to and from the control bus or equipment

Question 9

Reversing Device

Answer 9

Used to reverse the shunt-field connections of a synchronous converter during the starting sequence, or for other special reversing functions

Question 10

Unit Sequence Switch

Answer 10

Used to change the sequence of placing units in and out of service in multiple-unit equipment

Question 11

Anode circuit breaker

Answer 11

Used in the anode circuits of a power rectifier primarily to interrupt the rectifier circuit on arc back