should not be compromised to provide this backup feature. The pickup of a relay (as shown in
Figure 2.12) is the minimum value of the operating current, voltage or other input quantity reached
by progressive increases of the operating parameter that will cause the relay to reach its completely
operated state when started from the reset condition. This is usually a contact closure, operation
of a silicon-controlled rectifier (SCR) or similar action. For example, an overcurrent relay set for