FAQ - NORDIC LIGHTS® - Nordic Lights Ltd.

FAQ

How do I identify the manufacturing date of the lamp?

The lamp production date is located on the product label.

What is the difference between a lamps Beam angle & Field angle?

The Beam angle is the angle between the two planes of light where the luminous intensity is 50% of the maximum luminous intensity at the centre of the beam. The Field angle is the angle between the two planes of light where the luminous intensity is 10% of the maximum luminous intensity at the centre of the beam.

What is “Tell-tale” for the Dorado N70?

Due to the low power consumption of the Dorado indicator LED, some vehicles may require an additional electrical load to ensure the circuit functions correctly. The “tell-tale” is the additional load required by the vehicles system and is included in the lamp assembly.

Does the “brand bridge” across the centre of the Nordic Lights LED lamp lenses have any effect on the light pattern?

No. The lamps are designed to take the brand bridge into account. The LED’s are positioned higher & lower than the bridge &, combined with the light guides & lens designs, ensure that the usable light is directed where needed so that the resulting light pattern is exactly as intended.

Can an LED lamp replace an HID lamp?

Yes. Various combinations of LED lamp lumen output & light pattern are available. The correct replacement LED lamp to choose will depend on the application. It should be remembered that LED typically has a higher colour temperature than HID. The lamps are more efficient & light is much more directional, resulting in less stray (wasted) light & illumination more accurately directed to the area where...

Can I mount lamps in different orientations?

Yes, but optimal lamp cooling is achieved if the heatsink fins are vertical rather than horizontal. It should also be noted that, depending on the lens used, there may be differences in light distribution if a lamp is rotated.

Why is the casing of LED lamps quite warm when LED’s are meant to be cool?

Low heat generation is a common misconception about LED’s. Any electrical component consuming energy produces heat in some form. With LED’s the heat is generated at the base of the LED chip (the LED “junction”) & is directed backwards from the light emitting surface. This is why the lenses of LED lamps are significantly cooler than those of halogen or HID solutions which direct the...

Are your LED lamps overvoltage protected?

Lamps are over-voltage protected up to 80VDC.

Are your LED lamps reverse polarity protected?

Lamps are reverse polarity protected to -32VDC.

Are your lamps polarity sensitive?

Yes. Polarity must be observed for correct operation. The “+” & ”-“ connections are marked on the lamp.

Do you have LED lamps where the electronics is fully isolated from the case?

Yes. The KL range has isolated electronics. Also the Scorpius N4410 has electronics that are isolated from the lamp casing.

Does the LED lamp still work if one of the LED chips fails?

Yes. As long as the lamp in question has more than one LED chip. The light output will of course be reduced.

What is the typical lifetime for different light sources?

Halogen = 500 hours HID (Xenon) = 5,000 hours. LED = 50,000 hours.

What are some benefits of LED?

Energy efficient low power consumption (- 85% compared to other light sources). Compact & directional providing design flexibility & no wasted light. Unaffected by switching cycles. Natural colour temperature (“Daylight”) which is easier on the eyes & results in better, more productive working conditions. Very long lifetime compared to other light sources (50,000+ hours). Maintenance free. No bulb replacement results in less machine down time...

What are some benefits of HID?

Improved visibility due to “cooler” light colour. More energy efficient compared to halogen. High light output & wide illumination area. HID bulbs are standardized. Less heat generation compared to halogen. Longer service life than halogen. Easy to replace.

What are some benefits of halogen?

Halogen lamps & bulbs are cheap. “Warm” light colour feels comfortable. Halogen bulbs are standardized. Long service life compared to incandescent lamps. Immediate full light output. Compact size compared to HID. Easy to replace.

What is IP rating?

IP means “Ingress Protection” or “International Protection”. The IP code is defined in standards IEC 60529&DIN 40050. It classifies the degree of protection provided by an electrical equipment enclosure against the intrusion of solid objects & liquids.

What is colour temperature / correlated colour temperature (CCT)?

Colour Temperature refers to an ideal black body radiator. Correlated Colour Temperature refers to a light source whose perceived colour most closely resembles that of a black body radiator. Correlated Colour Temperature (CTT) describes if the appearance of white light is warm (reddish), neutral or cool (bluish). It is expressed in Kelvin (K). Higher values relate to cooler colours.

Why should I buy a Nordic Lights LED work lamp rather than a competitor’s equivalent?

Our lamps are proven to perform reliably in the most demanding of environments all over the world! This is reflected by our continuously high supplier quality ratings, customer feedback, repeat business, & very low customer returns. Our comprehensive warranty provides peace of mind that your lamps will continue working for many years without issues. We are an approved & preferred supplier to many of the...

What tests are done on your lamps to ensure design robustness & reliability?

All our lamp designs are exposed to extensive testing before being approved. These tests include: Lumen output & light distribution, vibration and shock, dust & humidity, exposure to heat & cold, thermal cycling, thermal protection, electro-magnetic compatibility, full functionality, abnormal conditions, chemical resistance, & usability. Before delivery, every single production lamp is subjected to full functional testing and is also operated for a minimum of...

What is your warranty?

For full details of warranty terms please refer to Nordic Lights Ltd. General Terms And Conditions Of Sale And Delivery

What is the difference between mounting brackets?

Aside from the physical dimensions & size of mounting bolts, the main differences are in the material used & their ability to withstand vibration, shock & corrosion. Basic brackets are made of steel & have basic shock & vibration resistance. Cast brackets have a far greater vibration & shock resilience. They are also more corrosion resistant. The best performing brackets in terms of resistance to...

Why do you have so many different types of LED work lights?

An LED is not a standardized light source like a halogen or HID bulb. LED’s vary, particularly in physical size & lumen output. This enables flexibility to produce lamp designs suitable for a wide variety of applications & customer requirements. A lamp with lower lumen output typically requires less, or lower powered LED’s than a lamp with a much higher output. The lamps physical dimensions,...

What can make LED’s flicker, or appear to flicker?

Lamps using switched power supplies actually turn the LED’s on and off extremely rapidly (<300Hz). However, the human eye cannot see this (the eye can only see flicker below about 200Hz). If LED flickering is noticeable then there could be various reasons: Cheap LED lamps may be designed with too low LED switching frequency. There may be a fault in the lamp circuitry. There may...

What colour lens is best for use in rain / fog / snow?

Moisture will reflect the shorter wavelength (blue) component of light more easily than longer wavelength colours (yellow, amber). Thus it is commonly thought that lamps with yellow or amber lenses are better for bad weather conditions. However, the amount of glare created is also affected by the relationship of angles between line of sight and the angle of the lamps. When using a lamp with...

Can your lamps be used in marine applications?

We do not recommend that our lamps are used in marine applications.

What’s the difference between Theoretical & Operational lumens?

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What is a heavy-duty work light?

Heavy-duty work lights are lamps specifically designed to be suitable for use in extremely demanding environments and applications. Heavy-duty lighting is most commonly used to provide illumination of working areas close to the machine to which they are attached. However, some lights for heavy-duty vehicles are also suitable for road and signaling use. Heavy-duty lights are typically installed on work vehicles operating in the mining,...

Who are Nordic Lights?

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What is PWM dimming, & which of your lamps can be dimmed?

PWM stands for pulse width modulation. The average value of voltage (and current) fed to the load is controlled by turning the supply ON and OFF rapidly. The longer the ON period compared to the OFF periods, the higher the total power supplied to the load & thus the brighter the lamp. All Nordic Lights LED lamps that use a linear power supply can be...

Why do LED’s with the same colour temperature sometimes appear to be different colours?

LED’s do not emit pure white light. True white light has an equal intensity at every wavelength. If any wavelength has a higher intensity than the rest, the light takes on a hue related to the dominant wavelength. Normal production LED’s will vary in colour, luminous flux, and forward voltage. Since the differences can be large, LED’s are split into subclasses or bins. Binning makes it...

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