Shock and Vibration
During shock
and vibration tests the relays must be energized with nominal voltage. The
contact should not open or close longer than 10 µs. Vibration stability: 20
g/50 … 500 Hz
Shock stability: 35 g/11 ms half sine wave.
Life Expectancy
The life
expectancy of a Reed Relay is at least 105...106
operations at nominal load. At minimum load the life expectancy can endure
up to 5 x 108 operations.
The
mechanical life expectancy is 109 operations (minimum).
Through the switching of higher loads, especially
inductive or capacitive and lamp loads, life expectancy can be considerably
reduced due to exceeding the permissible maximum current.
Proper
contact protection will reduce electromagnetic interference and rapid
contact erosion. Suppressing diodes in connection with inductive loads may
cause extreme contact wear.
Operating Temperature
The
operating temperature is the internal temperature of the relay (ambient
temperature plus self heating). If relays are
operating at higher ambient temperatures than +20
0C, the pull-in voltage and the maximum
coil voltage must be calculated as follows:
Pull-in voltage = Pull-in voltage at 20 0C x k1
Maximum coil voltage
= Max. coil voltage at 200Cxk2
When mounting relays side by side a gap of approximately
half the relay-width is recommended to avoid
mutual magnetic infl uence.
