H1gh V 2 Flashcards
Which describes an inverse time over current relay
Higher the current, shorter time to trip
How many c.t’s in each phase for differential relay
Two
If you were to install protective relay into breaker control circuit, what branch
The trip coil circuit
ANSI number 21
Distance relay
ANSI number 59
Overvoltage relay
If you were using protective relay to monitor timed overcurrent what ANSI number
51
A relay that comes equipped with built in test switches, the red handle:
Disables the trip circuit
When the electrons are strained in insulation, results in
Dielectric loss
What is the name when a change reappears on the conductor
Dielectric absorption
Term go-no-go refers to
AC hypot only
During insulation test, the current component that stays low and continuous and proportional to the magnitude of voltage
Leakage current component.
On a current-voltage test graph when the knee of the curve begins, this means
The insulation under testis becoming unstable.
According to CEC, max length you can run number 12 liquid tight flex
Not exceed 1.5m for the connection to equipment
CEC, identified conductor in 3 wire consisting of two line conductors known as
Common conductor
Main reasons for grounding electrical systems
Reduce magnitude of transient overvoltage
