NEON CRIB

THE ELECTRICAL PARAMETERS OF NEON SIGNATURES DEPEND ON THE LENGTH, SHAPE AND NUMBER OF TUBES, TYPE OF ELECTRODE USED, TUBE PRESSURE, GAS USED, MERCURY, SUPPLY VOLTAGE AND CLIMATE INFLUENCE.

These tables were calculated for inscriptions at the supply voltage of 230V / 50Hz and define limit values for minimum and maximum tube lengths for a given secondary voltage. These values are indicative of quick calculation, as short systems significantly reduce these metric values. Therefore, for each pair of electrodes it is necessary to add to the glass length of 0.5m. To determine the transformer accurately, you can use the calculation table for the transformer calculation, where you define the gas used, the glass diameter, the number and the length of the individual systems.

For the correct and safe connection of transformers, the following are recommended:

1.How to calculate the length of electric meters: length of tubes + 0.5m for each pair of electrodes. Example: 3 tubes with a length of 1.2m = 3x1.2m + 3x0.5m = 5.1 electric meters
2. Check the voltmeter with 230V supply voltage.
3. After 10 to 15 minutes of operation, measure the milliammeter working current in the secondary circuit.
4. Example: Have a secondary current of about 90% for blue gas (Argon with Neon) and 95% for red gas (100% neon) of nominal values. Example: The red gas transformer xxxx / 30 has an operating current of 25mA, the recommended secondary current is 23.75mA, the blue gas transformer xxx / 37 has a working current of 37mA, it is recommended to be 33.3mA.
5. Check the actual current and voltage values on the primary side.

Recommended lengths in electric meters

Calculator of neon transformers.
Once you have entered the gas type, glass diameter, length and number of individual pipe types, you will immediately know the transformer value.
Download here -  Transformer calculation

CALCULATION OF NEON TRANSFORMERS

Once you have entered the gas type, glass diameter, length and number of individual pipe types, you will immediately know the transformer value.

Formula to calculate:
((N x 180) + (L x ignition voltage)) x coefficient = voltage of the transformer
N = NUMBER OF NON-SYSTEMS
L = LENGTH OF NON-CONVEYOR TUBES IN METERS

Example blue gas:
(5 x 180) + (4.25 x 280)) x 1.5 = 3135 V (3 KV interior ~ 4 KV exterior)
(4 x 180) + (3.4 x 280)) x 1.5 = 2508 V (2.5 KV / mA (according to the required luminous intensity)

Coefficient

Ignition voltage in V/m

INSTALATION INSTRUCTIONS

Conection:

1. Check that the el. the supply to the transformer is max. 16 Amps.
2. Ensure all metal parts of the transformer are grounded in accordance with EN 50107.
3. Ensure that the transformers are not in a place where they could overheat (do not install the transformer in an enclosed space or too close to the other transformer) (EN50107).
4. Ensure that the high-voltage connection cables are as short as possible, the transformer should be installed as close as possible to the systems.

Copper cable diameter should be at least 1mm² (E50107)

Checking the operating parameters:

1. Primary circuit
   1. Connect the primary side of the transformer across the switch to the power supply. To check the voltage, connect the voltmeter to the primer.
   2. Connect the neon tubes in series and connect them to the transformer secondary. Also connect a milliammeter to the circuit.
   3. Connect the earthing terminals of the transformer to the ground. Turn on the power supply.
2. Secondary circuit
   1. Use the voltmeter to check the correct voltmeter voltage according to the transformer label.
   2. Use the milliammeter to check the secondary current
      • the measured secondary current should not exceed the values given on the label. If these values are exceeded, use a transformer with a lower secondary voltage.
      • secondary current (mA) may be lower by 10% for tubes using a mixture of argon and neon, using 100% neon, this current should not be less than 5% compared to the label. (value on label = 25mA - 10% minimum current = 22.5mA). Attention to the red gas transformer (30, 45, 60, 75 mA) indicates a short-circuit current. Operating current / 1,2. E.g. The 30mA transformer is a current operating current of 30: 1.2 = 25. (label value = 25mA - 5% minimum current = 23.75mA)

CONSTRUCTION:

The MINIBLOCK cover (IP20) should have the appropriate external protection of the transformer which may be the advertisement itself. It is extremely important that ventilation is sufficiently ensured in these protections.

RESINBLOCK coverage (IP44) can be installed in rooms in any position. The outdoor installation is
possibly without any further protection of the transformer against the weather in the positions shown in the figure.

Measurement and maintenance of HV transformers

Blank Transformer:

• primary voltage
• primary current
• the secondary voltage on both windings against zero (the value must not be less than that indicated on the label and may be exceeded by max. by 10%, there should be no difference between the windings)

Transformer short circuit to secondary:

• primary current
• secondary current (the short-circuit current must not exceed the multiple of Icc and the operating current according to the type of the measured transflective, the allowed tolerance to the minus is 5%)

Maintenance:

It is necessary to check the condition of the knife contacts in the lid and on the transformer. Contacts should be cleaned from oxidation and check their mechanical strength. If there is a noticeable warmth around these contacts (dark plastic in the lid), the lid must be replaced. At the same time, the transformer contacts may be damaged by heating. Required control of the mechanical elasticity of the contact.