Frequency control unit – FN2
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PT. SINAR ELEKTRINDO PERKASA
JL. Panjang no.7, Kedoya Elok Plaza DC-44 Jakarta Barat
Phone : + 62-021-5806044 (Hunting); Fax : + 62-021-5806058; Email: sales@sinarelektrindo.com
Application
This unit has been developed for automatic equalization of the frequency generating sets. Output control impulses are
given for speed governer motors. Motorized potentiometers, steam control valves and the like.
For fully automatic synchonization add the synchronizer unit SY and, if needed, the load balancing unit WLA2.
Functions
The frequency control unit is supplied from one phase of the each system (one bar system and one phase alternator). A
Selector Switch for “manual and automatic” selection is useful.
This unit compares the two frequencies and gives output impulses in the right direction (Slower and faster) to the speed
governor motor. The interval between the impulses is shorter when the difference in the frequency is high and longer
when the difference is low, in order to achieve fastest regulation. The lengths of impulses are adjustable on two
potentiometers, to adapt this unit to different type of speed governor motors. It is recommended that the frequency
control unit should be switched off when the generating set is already in parallel, to prevent interferences with the
load-balancing unit.
Technical Data
Type
: FN2
Connection Voltage
: 230 V
Nominal frequency
: 50 Hz
Impulse time
: 0.2 … 1 s
Power consumption
: 3 VA per system
Permissible voltage tolerance
: + 10 / - 15 %
Duty
: 100 %
Adjustment
: Self-locking potentiometer with screw for fine adjustment
Contacts
: 2 NO, potential free
Contacts material
: Silver-plated
Contact rating
: max. 1000 VA at 230 V AC
Connection terminals
: metric 4, wires max 2.5 mm2
Case
: SEG-standard case w x h x d: 105 x 141 x 91 mm
Material
: Track resistant moulded base with transparent cover
Type of protection
: Case IP20, terminals IP00
Operating position
: Any
Weight
: 0.4 Kg
Maintenance
: None
Service life
: 106 operations
Type Supplement – S
: Type – tested for ship plants
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FN2, Page 2 of 4
PT. SINAR ELEKTRINDO PERKASA
JL. Panjang no.7, Kedoya Elok Plaza DC-44 Jakarta Barat
Phone : + 62-021-5806044 (Hunting); Fax : + 62-021-5806058; Email: sales@sinarelektrindo.com
Connection diagram
Dimensions and Drilling sizes
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FN2, Page 3 of 4
PT. SINAR ELEKTRINDO PERKASA
JL. Panjang no.7, Kedoya Elok Plaza DC-44 Jakarta Barat
Phone : + 62-021-5806044 (Hunting); Fax : + 62-021-5806058; Email: sales@sinarelektrindo.com
Order form
Frequency Balancing Relay
Number
Voltage
FN 1
230
Nominal Frequency
50 / 60 Hz
50
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FN2, Page 4 of 4
PT. SINAR ELEKTRINDO PERKASA
JL. Panjang no.7, Kedoya Elok Plaza DC-44 Jakarta Barat
Phone : + 62-021-5806044 (Hunting); Fax : + 62-021-5806058; Email: sales@sinarelektrindo.com