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“500V” Marking

Lamp holders marked 500V are suitable for circuits with electronic ballast and dimmer.

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IMPULSE WITHSTAND CATAGORY

Lamp holders for fluorescent Lamps (EN|IEC 60400) are in accordance with the prescribed creepage distances and clearances for the impulse withstand category II (EN|IEC 60664-1 standards)

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“T…” TEMPERATURE RATING OF LAMPHOLDERS

When choosing the lampholders to assemble a luminaire it is important not to underestimate the temperature developed by the lamp, the ballast and its associated current.

It is essential to make sure that:
The luminaire is able to dissipate the heat it produces.
The maximum temperature reached in the luminaire never exceeds the “T…” relative to its components because it can be dangerous and can cause damages.
The components without a relative “T…” marking can work up to a maximum temperature of 80oC.
Standard flexible PVC wire with copper conductor can withstand up to a tempeture of 90oC
 
Lampholders for tubular fluorescent lamps normally have two temperature classifications “T…” and “Tm…”. “T…” Is the maximum working temperature of the Lamp holders, it is measured at the hottest point i.e. Rotor. Tm….-is the maximum working temperature that the Lamp holder housing can withstand overall, and Consequently it is lower than the ‘T…. temperature.
 
Example –
 
 
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ROTER AT LAMPHOLDERS FOR G5 AND G13 TUBULAR LAMPS

The rotor of the lamp holder, being the point at which the greatest heat is developed, is molded in PBT, PBT is a high temperature polymer which is capable of withstanding continuous working temperature at 1400 C, with short excursion to 1700 C without shrinking or deformations.

The presence of the rotor assure total safety as
It avoids the insertion at only pin at the lamp in the lamp holder while the other pin is still exposed
It can be turned only when both lamp pins are correctly inserted in the proper slot
 
You can not make accidental electrical contact to the lamp even it the lamp pins touch the front face of the lamp holder.
 
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CORRECT USE OF LAMPHOLDER FOR G13 WITH 30o, 45o, 90o POSITION OF ROTOR

One must absolutely avoid the use of a lampholder having the rotor with 90o position in couple with another lampholder that has the rotor with 30o or 45o positions, as this could cause an imperfect contact between the lampholder terminal and the lamp pin because the rotation of the rotor would stop in intermediate position (30o or 45o). This could start dangerous overheating and burning.

 
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AUTOMATIC FIXING OF ROUND LAMPHOLDERS G5, G13

Round lampholders for fluorescent lamps for automatic fixing can be clamped in the following ways:
BACK MOUNTING: In two round holes. In this case lampholders are clamped into fixing metal plate by means of two hooks provided in their back part. Lampholders can be fixed or adjustable if provided with a back spring that compensates the lamps’ length tolerances.

 
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FIXING HOLES DISTANCES AND TOLERANCES

Thickness painting , cutting bur of the metal plate must be taken into account when the fixing holes are designed, together with the individual specifications holes dimentions stated in the catalogue, The alignment tolerance among pans at Lamp holder should be not greater then 10 +/- push on wire terminals.

 
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ROTOR TEST

Carried out with a cap simulator that simulates the insertion of the lamp in lamp holder.
If we analyze these methods we can come to the conclusion that the ‘Rotor Test’ is an Universal System , and a Complete test because as well as verifying the correct operation of the luminaries it also tests the contact pressure of the lamp pins and check the accuracy of the lamp holder mounting.

 
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WIRE PUSH TERMINALS

Push wire terminals are designed to accept a rigid connector with section of 0.5 ~1.5mm, Attention must be paid to the right stripping Length at the wires (as specified) to ensure a correct operation of the terminals and a good electrical connection.
The insertion of the wires must be done, keeping them perfectly in axis with the guides and the holes of the screw less terminals.
To disconnect the wire it is necessary to insert small screwdriver into the openings at top of the connector and apply a slight pressure on the terminal spring, care should be taken to ensure the terminal would not be damaged during the extraction of wires.

 
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SUGGESTIONS TO USE A COUPLE OF FLANKED T5 / G5 LAMPS

To optimize the working of T5 / G5 lamps, when a couple of lamp is used side by side, the manufacturer warn the luminaire designers to maintain a distance between the two flanked tubes at least twice the diameter of the lamp tube not less than 32mm.

 
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LAMPHOLDERS LOCKING DEVICES,

The use of lamp locking devices is suggested when lamp holders are in luminaries likely to be subjected to vibrations of shocks, These devices hold the lamp holders spring in position thus preventing the lamps from coming out.

 
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SWIVELLING LAMPHOLDERS

The use of swiveling Lamp holder and at their associated brackets is suggested to make the lamp charge easier in the luminaries where the space is not sufficient to allow for horizontal insertion or removal of the lamp or to avoid it the risk f breakage.

 
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WARNINGS FOR THE USE OF GX24… COMPACT LAMPS

Luminaire manufacturer using lampholders for GX24… have to foresee, around the lampholder a 61mm diameter free space to insert correctly the GX24… lamps into the lampholder (EN/IEC 60081 standards). In fact, if the lamp is not completely inserted in the lampholder, the contact is not safe and the lampholder retaining spring could not hold correctly, the lamp would fallout.

 
 
CLIPS

For some fluorescent Lamps with single cap it could be necessary to use an additional Lamp support clip, because of their Length

 
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SNAP – ON CAPS

Snap on caps for fixing lamp holders directly on to tubes are available.

 
SHADE RINGS

Shade rings are available for lamp holders provided with external thread.

 
 
 
LUMINAIRES FINAL TEST.

he luminaries manufacturer is responsible for the choice and the correct mounting of the components and he must also carry out a final test on the luminaries to verify its correct operation.
All our lamp holders are suitable to undergo either a manual or an automatic final test and according to the used device the test can be run in the following ways,
‘TOP TEST’ for Tubular Fluorescent lamps carried out with a Two pin simulator which, when inserted vertically from above, Touches the lamp contact via the slot in the upper port of the lamp in the lamp holder.

 
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