Product Nomenclature

The MOSO product model naming rules can be download here. If you have any question, please feel free to ask our experts: info@mosopower.com.

General LED driver related

A constant voltage driver provides a specified output voltage for the permissible load conditions. The use of constant voltage drivers in the design requires limiting the current in the system. Constant voltage drivers are generally available with four fixed output voltages of 12, 24, 36 and 48 Vdc.

A constant current driver provides a specified output current for the permissible load conditions. Designs using constant current drivers can be connected directly to the LEDs without additional restrictions, as the LEDs respond directly to the current.
A constant power driver is a constant current driver with an adjustable output current, simultaneously the output voltage of the driver can be automatically adjusted according to the set output current, thus ensuring that the power that can be output from the driver is constant.
Isolated design means that there is no direct electrical connection between the primary side and secondary side of the transformer and that two sections are insulated from each other in a high resistance state. The advantages are high safety, high interference immunity, easy implementation of multiple outputs and a wide input voltage range.

Non-isolated design means that the input and output of the power supply are connected directly through the electronic components, and the current can flow between two sections through a circuit. The advantages are high efficiency, small size, ease of design and low cost.
Class I and Class II equipment safety level against electric shock, mainly considering the insulation system of the product:

Class I equipment: this equipment means that there is protection against electric shock through the use of basic insulation, in addition to also providing a protective grounding impedance connected to. When the basic insulation failure, this grounding impedance will withstand the dangerous voltage to ground. That is, Class I switch mode power supply will provide a pair of ground connection terminals.

Class II equipment: This type of equipment not only relies on basic insulation to prevent electric shock protection, but must additionally provide double insulation or reinforced insulation safety protection measures, without grounding or relying on the installation conditions of protection measures. That is, Class II switch mode power supply does not provide a pair of ground connection terminals.
Class 2 is derived from North American UL 1310 Standard for Class 2 Power Units, which mainly refers to the output of product is safe and must be isolated from the input, its single output needs to meet the following basic electrical performance:
a)DC voltage less than 60V in dry and humid environments (42.4V in Canada), and less than 30V in watery environments.
b)Total power <100W
c)Rated output nominal current less than 5A (maximum less than 8A in case of overload)
d)Meets the relevant abnormal test requirements of UL1310.

Class II is derived from the IEC standard or equivalent and refers mainly to the structure or type of insulation against electric shock of the product. It means that the protection against electric shock of the product does not only rely on the basic insulation, but also includes additional safety measures, such as double insulation or reinforced insulation, but no grounding or protection measures that depend on the installation conditions. When the products are designed for / suitable for independent use (outside a luminaire), the products are fully classified as class II and are marked by a double square symbol and if it is only suitable for built-in use (inside a luminaire) it is marked by a double circle symbol.

Class 2 is related to the North American UL standard, which refers to the risk of electric shock or fire from the output; whereas Class II is related to the IEC standard, which refers to safety against electric shock from the input. Note: both are pronounced “class two”.

We have provided guidance on how to do this, please check the link here.

The software will be available on delivery of the product and we also provide links on this website to download general software for the relevant series.

The luminous performance of LEDs declines with time and temperature. In conventional LED designs, the output power is set to meet the lumen requirement corresponding to the arrival of the rated life of the LED light source, so the luminaire is always over-lit before its life. Constant Lumen Output (CLO) is a control scheme that compensates for illuminance loss and ensures constant light output throughout the full life of the lighting system. Through pre-set dimming control programs and light decay curves, the luminaire starts operating at a lower brightness and power under initial conditions, and during the life cycle the components increase power to compensate for the light decay of the LEDs, achieving constant brightness throughout its life, and energy saving.
Digital Addressable Lighting Interface (DALI) is a protocol for data transmission specifically developed for lighting control systems, which defines the way in which digital communication between lighting appliances (the driver circuits of various types of luminaires) and system device controllers (e.g. lighting controllers, sensors, etc.) takes place.

DALI-2 is the second major version of the DALI protocol family of standards IEC 62386 and is the latest version available. DALI-2 adds new features, enables interoperability, introduces standardization of control devices and equipment and is backwards compatible with DALI v-1.DALI-2 products must be fully certified by the Digital Illumination Interface Alliance (DiiA) before the use of the DALI-2 logo is permitted.
D4i is an extension of the DALI-2 certification and is designed to support intelligent IoT luminaires, adding to the DALI-2 lighting control support for data-related functions including data collection and analysis of lighting equipment, energy and diagnostics. All D4i certified products are also DALI-2 certified products, which can optionally carry either the D4i logo or the DALI-2 logo, or both. Conversely, DALI-2 certified products do not necessarily have D4i certification.
Safety standard
Tc represents the case temperature. The Tc for Safety of the product is the maximum operating case temperature at the location specified by the safety regulations during safety evaluation, regardless of the long-term life of the product.

Tc for Warranty means the maximum operating case temperature of the product to ensure stable and reliable operation of the product during the warranty period, and usually based on the lifetime of the capacitor in the design.