LED UV Ultraviolet Irradiation Crosslinking Equipment For Cable And Wire

 UV LED devices are the most advanced UV radiation sources in the world, characterized by extremely high energy efficiency (about 30%), extremely high selectivity of effective wavelength (half-power wavelength broadband: 5nm), extremely long service life (40,000 hours), low infrared heat and no ozone, making them more suitable for the cross-linking and solidity of cross-linked polyolefin and other materials.

LED-UV type Cable UV Light Irradiation Crosslinking Machine adopts a circular cavity tunnel structure, installs a self-developed UV LED light source and forms a tunnel to the central area, whose radiant power can be infinitely set within the scope of 0~100%.

Structural Characteristics of UV LED Radiation Cable Crosslinking Equipment :

1.The tunnel structure is opened by turning over, which is convenient for operation, cleaning and thread taking

2.Using intelligent touch man-machine interface, monitoring data, operation buttons, and power setting are all completed on the touch screen interface

3.One-key start function coexists with separate start

4.The cooling method adopts refrigerator refrigeration, and the circulating medium uses automobile special antifreeze

5.It is connected to the smoke removal mechanism and discharged outside through the air duct

Characteristics of UV Light Irradiation Crosslinked Cable Equipment :

1.Wide applicability

Ultraviolet cross-link equipment is suitable for online cross-linking of polyethylene or low-smoke halogen-free flame-retardant polyolefin low-voltage wires cables. The maximum cross-linking thickness of the production can reach about 2mm (non-frame retardant type, high density or linear low density polyethylene cable material).

2.Low cost

The price of ultraviolet light crosslinking equipment is only 1/10 - 1/5 of electron beam equipment. The installation only needs to add the equipment on the original basic production line, and no other equipment investment is needed. Because the ultraviolet light production method completes crosslinking at one time, it can save other human and material resources, and its production cost is much lower than other crosslinking methods.

Performance Indicators of LED UV Irradiation Crosslinking Machine : 

Power Supply	AC380V, 10φ50HZ
Applications	UV Crosslinking of cables
Suitable Size	Effective diameter 0-60mm, effective length 1000mm
Size of Machine	1700*1050*1900mm L*W*H
UV LED Light Source	Equipped with 14 UV LED lamp sets, forming a circle. Using imported chip, water cooling heat dissipation, prolong the service life of UV LED lamp, with advanced aggregated optical system, high intensity of light source, to ensure fast light crosslinking reaction
Life of Light Source	>30000 hours
Cooling Method	External chiller, through special coolant circulation, inside circulation cooling
Cooling System	14 temperature probes intelligent control
Structure Design	Lamp source adopts front and rear, opening and closing mode, convenient for threading. Integrated design of the whole machine, beautiful, generous, and save space.
Irradiation color	Ultraviolet
Temperature Control Range	Room temperature -40℃
Temperature Measuring Point	14 pcs
Accuracy of Temperature Control	±2℃
Power Consumption	About 14KW
Material	SS41# steel plat is used the case after anti-rust treatment inside and outside.
Control Method	PLC + human machine interface (HMI)
Safety Device	Input circuit breaker, emergency stop button, real-time detection of lamp source status
Configuration	Host machine, water chiller (optional), power line 3m

Outgoing Line Speed of LED UV Radiation Polyolefin Crosslinked Machine : 

Cross-Sectional Area of Conductor (mm2)	Thickness (mm)	Production Speed (m/min)	Hot Prolongation (%)	Thermal Contraction (%)
2.5	0.7	60-110	50-100	0-3
4	0.7	60-110	50-100	0-3
6	0.7	60-110	50-100	0-3
10	0.8	40-100	50-100	0-3
16	0.8	40-100	50-100	0-3
25	0.9	40-90	50-100	0-3
35	0.9	40-90	50-100	0-3
50	1.0	30-90	50-100	0-3
70	1.1	30-80	50-100	0-3
95	1.1	25-80	50-100	0-3
120	1.2	25-70	50-100	0-3
150	1.4	20-60	50-100	0-3
185	1.6	20-50	50-100	0-3
240	1.7	15-30	50-100	0-3
300	1.7	15-25	50-100	0-3

HAMAMATSU Silicon Photoelectric Diode S1226-18BU TO-18

HAMAMATSU S1226-18BU and S1336-18BU are Si photodiodes encapsulated in a TO-18 package with a UV glass window. These photodiodes have high sensitivity from the UV to near infrared range and operate reliably when detecting high power UV radiation (such as from mercury lamps)

Features of S1226-18BU Silicon Photodiode :

- High UV sensitivity from the UV to near infrared range

- TO-18 package with UV glass window

- Suppressed near IR sensitivity

- Low dark current

- High reliability versus high power UV radiation

Applications of HAMAMATSU Si Photodiodes :

- Mercury lamp (λ=254nm) monitor

- Excimer laser (KrF: λ=248nm) monitor

- Other UV detection

Specifications of S1226-18BU UV Sensitive Photodiode :

Photosensitive Area	1.1*1.1 mm	Number of Elements	1
Package	Metal	Package Category	TO-18
Cooling	Non-cooled	Reverse Voltage (max.)	5V
Spectral Response Range	190 to 1000 nm	Rise Time (typ.)	0.15 μs
Photo-Sensitivity (typ.)	0.36 A/W	Dark Current (max.)	2 pA
Peak Sensitivity Wavelength (typ.)	720nm	Noise Equivalent Power (typ.)	1.6*10-15W/Hz 1/2
Terminal Capacitance (typ.)	35 pF	Measurement Condition	Ta=25℃, Typ., Photosensitivity: λ=720nm, Dark current: VR=10mV, Terminal capacitance: VR=0 V, f=10 kHz, unless otherwise noted

New Product Of NICHIA Upgrades Again

 On October 6, NICHIA unveiled the high high output UVC LED NC4S334BR, further demonstrating its commitment to UVC LED technology.

The new high output UVC LED NC4U334BR is 6.8*6.8mm and still uses 280nm band to maximize virus capability and maintain practical reliability. At the same time, it can generate 200mW radiation flux at 7.8W input power. Significantly increases the available virus killing power without sacrificing service life. It is one of the highest output UVC LED in the industry.

According to the official information, NC4U334BR’s high output can bring greater possibilities for industrial water treatment and air purification. Previously, the available radiation flux in a given space was limited, and because of the industrial scale traditionally associated with mercury lamps, the instantaneous on/off operation capability of LEDs significantly reduced standby power compared to the time required for mercury lamps to reach full power.

On Sept. 21, NICHIA also issues using high radiation flux 280nm NCSU434B UVC LED, has the highest power conversion efficient 3.5*3.5mm LED. In the typical input power under the condition of 350mA/5.7V, the typical radiation flux is 62mW. In addition, in high density installation, the radiation flux per unit area is about three times that of traditional products. At present, mass production has begun for a variety of bacterial and viral applications, particularly for industrial water and air applications.

UVC LED is one of the most popular sterilization methods, which is expected to completely change the effect of sterilization and disinfection, and may bring more safe sterilization facilities. This is a common understanding in the industry, and it is also an important transition road for UV disinfection from the current mercury lamp to UV LED disinfection in the future.

The last high output UVC LED NC4U334BR is designed to meet the market demand for industrial water treatment and air purification to a certain extent. Importantly, this small but efficient UVC LED can provide high radiation flux, high power. Compared to previous technology, the solution provides better system miniaturization and highly stable long-life performance.

NICHIA is committed to continue to focus on the development of deep ultraviolet LEDs with higher performance and reliability, and to help achieve a mercury-free and carbon-free society through energy conservation.

How to Store the UV LED Light Beads

 Correct Storage Method of Ultraviolet LED Lamp / UV LED Correct Storage Method

Conditions		Temperature	Humidity	Time
Storage	Before opening aluminum bag	≤30℃	≤90%RH	Within 1 year from delivery date
	After opening aluminum bag	≤30℃	≤70%RH	168hours
Baking		65±5℃	-	24hours

1.The storage/packaging requirements for this LED are comparable to JEDEC Moisture Sensitivity  Level (MSL) 3 or equivalent. NCHIA used IPS/JEDEC STD-020 as a reference to rate the MSL of this LED.

2.This LED uses a package that could absorb moisture. If the package absorbs moisture and is exposed to heat during soldering, it may cause the moisture to vaporize and the package to expand and the resulting pressure may cause internal delamination. This may cause the optical characteristics to degrade. To minimize moisture absorption in storage/transit, moisture-proof aluminum bags are used for the LEDs with a silica gel packet to absorb any air moisture in the bag. The silica gel beads turn blue to red as they absorb moisture.

3.Once the moisture-proof aluminum bag is open, ensure that the NICHIA Ultraviolet LED is soldered to a PCB within the range of the conditions above. To store any remaining unused LEDs, use a hermetically sealed container with silica gel desiccants. NICHIA recommends placing them back to the original moisture-proof bag and reseal it.

4.If the “After Opening” storage time has been exceeded or any pink silica gel beads are found, ensure that the LED are baked before use. Baking should only be done once.

5.This LED has gold-plated electrodes. If the LEDs are exposed to a corrosive environment, it may cause the plated surface to tarnish causing issues (i.e. solderability). Ensure that when storing LEDs, a hermetically sealed container is used. NICHIA recommends placing them back to the original moisture-proof bag and reseal it.

6.To prevent substance/gases from affecting the plated surface, ensure that the parts/materials used with the SMD UV LED Lamp Chips in the same assembly/system do not contain sulfur (e.g. gasket/seal, adhesive, etc.). If the plating is contaminated, it may cause issues (e.g. electric connection failures). If a gasket/seal is used, silicone rubber gaskets/seals are recommended. Ensure that this use of silicone does not result in issues (e.g. electrical connection failures) caused by low molecular weight volatile siloxane.

7.To avoid condensation, the LEDs must not be stored in areas where temperature and humidity fluctuate greatly.

8.Do not store the UV Light Emitting Diode Chips in a dusty environment.

9.Do not expose the LEDs to direct sunlight and/or environment over a long period of time where the temperature is higher than normal room temperature.