ComAp IG-NT, Installation Manual

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IGS-NT Installation Guide
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4. Marine Application Notes
The IGS-NT system and components can be used as Control, Monitoring and Protection for
single and multiple generator applications according to Marine Type Approval Regulation
Controller is tested and approved:
For location in Machinery spaces and Control room
– Location class B.
According the EMC rules for general power distribution zones.
4.1. Safety requirements
Additional, independent safety and protection devices are necessary to meet safety
requirements of Rules and Regulations of Marine Classification Societies. The sensors and
circuits utilized for the second stage alarm and automatic shutdown are to be independent of
those required for the first stage alarm (LR Rulefinder 2008 - V9.10).
N
OTE
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The project designer is responsible to follow Marine regulations in project design wiring and
InteliGen-NT or InteliSys-NT controller configuration and setpoint setting.
Usually is necessary to use additional, independent equipment for Emergency stop,
Overspeed, Low oil pressure and Overcurrent protection.
Oil mist and engine bearing temperature monitoring are to be provided when arrangements
are fitted to override the automatic shutdown for excessive reduction of the lubrication oil
pressure (or for engines above 2250 kW). The Overriding of this protection is to be
independent.
Required alarms and safeguards for auxiliary engines.
Lubrication oil inlet temperature high
Lubrication oil inlet pressure low
Coolant outlet temperature high
Coolant pressure or flow low
Exhaust gas temperature high
The maximal wire length for Binary (Analog) inputs and outputs should be less than 10
meters, otherwise the separation relay or additional protection has to be used.