Electrical Engineers and Master Electricians (EEAME) Portal
Home
Dictionary
Tutorials
General
Specifications
Disclaimer
Devices
Dictionary of Electrical Engineering
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
ALL
Commonly used terms in the Electrical industry.
time-delay relay
relay that responds with an intentional time delay.
1. in control circuits, time-delay relays are used to cause a time delay in the state of the relay when power is applied or removed to the relay actuator;
2. in power system protective relays, the response time usually depends on the magnitude of the measured value. If the measured value is a large multiple of the pickup value, then the relay operates or trips after a short time delay. For smaller multiples of pickup, the relay trips after a longer time delay.