Dimming switch GFK3
|Dimming switches type GFK 3 are designed to automatically turn on the various lights in the evening and turn
them off at sunrise.
In daylight, the relay inside the device is deenergized. As soon as the
light intensity falls to below the preset value, it is energized and a
circuit is made. The cycle taking place when the light intensity
increases is reversed. The circuit is made with a certain delay in
order to prevent any unnecessary disconnections due to short-term
increases in the light intensity (such as f. in. caused by lightning.)
The device comes preset to the desired activating
threshold (to be specified when ordering), which is somewhere between 5 and 40 lux. Unless otherwise
ordered, it leaves the factory preset to between 10 and 25 lux, a widely accepted rule-of-thumb value.
When installing, should be mounted to a vertical surface, with the covering upwards, using 2 pcs.M5screws.
When mounting, it should be made sure that enough light falls onto the
device, and that other light sources possibly disturb with the
night-time operation are avoided.
When connecting it should be removed the covering and connected the three-wire cable to the terminal block by
reason of wiring diagram given on the data plate.
Recommended wire: A05VV-F3×1 mm , blue, brown, black.
It is a good practice to clean the covering of the dimming switch at
regular intervals in function of the climatic conditions in order to
prevent reduced transparency.
|Rated insulation voltage
|Rated control circuit voltageg
||230 V 50 Hz +10 %, -15 %
||5 VA max.
||10 ... 25 lx
||1.3 ... 1.8 times the actual actuating threshold
|Operate delay on abrupt changes in light intensity
||2 s min.
||120 c/h max.
|Degree of protection||IP 54
|Shock protection method
||by double insulation
|Operating temperature range
||-20 ... +50 oC
||0,5 ... 1,5 mm2
||with the covering pointing upwards
||1 make (closed in darkness)
|Rated operational voltage
||230 V, 50 Hz
|Rated thermal current
|Allowable loading current and electric enduranceAllowable loading current and electric endurance
|in the utilization category AC-15
||1,6 A és 105c
|with 60Wbulbs max.
||900 W és 2×104c
The detailed technical description of the product family is in the printed catalogue
"TIMERS MONITORS ELECTRIC DEVICES FOR INSTALLATION"
For further information see the