10
6.2
6.3
6.4
6.5
Electrical isolation and over-current protection
Suitable means of isolation must be provided by the installer to isolate both wires
between the FCM 802/804 and the external battery/load. Suitable over-current
protection (fuses or circuit breakers) must be provided by the installer between the
FCM 802/804 and the external battery load.
The battery and associated isolation and over-current protection must conform to:
EN IEC 62485-2:2018. Safety requirements for secondary batteries and battery
installations. Stationary batteries.
Air supply
To produce electrical power, the FCM-802/804 requires an unobstructed air supply
which must not be recirculated between the exhaust and inlet.
· Ensure that the air inlet cannot be blocked
· Ensure that the air exhaust cannot be blocked
· Do not recirculate the exhaust to the inlet
The air must be free of the following contaminants:
· Sulphur
· Hydrocarbons
· Carbon Monoxide
· Ammonia
Hydrogen fuel
The FCM-802/804 must be set up in a well-ventilated environment with
consideration given to the precautions of hydrogen safety. The hydrogen supply
needs to be regulated to 650mbar.g (±150mbar.g), and maintain the pressure during
rapid changes of flow rate.
When installing and operating hydrogen systems, hydrogen general safety guidance
must be considered:
· The hydrogen must be at least 99.9% pure and comply with the specification:
· ISO 14687-3:2014 grade E category 3
· ISO/TR 15916 basic considerations for the safety of hydrogen systems
Hydrogen connection
The hydrogen connection to the system is at the rear of the module just above
the communication port (see Section 2 Product Interface). The hydrogen supply is
connected via a female G1/8 parallel BSP thread with a face seal. It is required that
this is then connected via an appropriate mating connection.
The hydrogen pipework must be checked periodically for leaks, particularly when
connectors have been re-connected, such as cylinder exchange or installation.
Connections
6
