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Stratos-Micra • INSTALLER’S HANDBOOK • Iss. 1
6
There should be about 30mm of wire between the end
of the ferrite and the terminal block to give adequate
stress relief. To achieve this, it is necessary to strip back
the cable screen approximately 130mm. The screen
should be terminated under the cable gland cap.
The Stratos-Micra 25 is fitted as standard with a Fire
relay (corresponding to the FIRE 1 alarm level), which
closes on alarm, and a general Fault relay, which opens
on any fault condition or on power-down.
The relays are of the volt-free type, with a maximum
current capacity of 500mA at 30V DC.
To comply with radiated immunity requirements, it
is recommended that the relay connection wires be
looped once around a suppression ferrite (provided).
Fault relay
contacts
Fire relay
contacts
6.2.3 Relay connections