
KEYSTONE TECHNOLOGIES
Frequently asked questions
Common questions about KEYSTONE TECHNOLOGIES from 3G Electric.
What is the input voltage range for Keystone Technologies LED drivers?
Most Keystone Technologies LED drivers in the selectable output current series operate on a universal input voltage range of 120 to 277V AC. This allows the same driver to be used in different electrical systems without requiring a step-down transformer or different model. The wide input range is common in commercial and industrial lighting applications where line voltage may vary. It also simplifies inventory because a single driver can serve multiple projects with different supply voltages. For specific models, always verify the input voltage rating on the product datasheet.
What does 'selectable output current' mean on Keystone Technologies drivers?
Selectable output current means the driver can be configured to deliver different constant current levels to the LED load. This is typically done via a switch or programming interface on the driver. For example, a Keystone Technologies driver might offer selectable currents such as 450 mA, 850 mA, or 1200 mA. This flexibility allows one driver model to power different LED arrays or fixture designs, reducing the number of driver SKUs needed. It also helps in tuning light output and power consumption. The specific selectable currents vary by model, so consult the datasheet for available settings.
Are Keystone Technologies LED drivers dimmable?
Many Keystone Technologies LED drivers include 0-10V dimming as a standard feature. This allows the driver to be connected to a 0-10V control signal, which is a common dimming protocol in commercial lighting systems. With 0-10V dimming, the light output can be adjusted smoothly from 100% down to a low level, often around 10% or lower. This is useful for energy savings and creating flexible lighting scenes. Not all models may have dimming, so check the product specifications. The dimming wires are typically separate from the AC input and DC output connections.
What is the maximum power output available from Keystone Technologies LED drivers?
Keystone Technologies offers LED drivers with maximum power outputs ranging from 15W up to 75W in the selectable output current series. For example, the 75W models can deliver up to 75 watts to the LED load, while lower power models like 15W are suited for smaller fixtures. The power output must be matched to the LED load requirements. Exceeding the maximum power rating can cause overheating or failure. When selecting a driver, consider the forward voltage and current of the LED array to ensure it falls within the driver's output voltage and current ranges.
What are the output voltage ranges for Keystone Technologies LED drivers?
Keystone Technologies LED drivers typically have output voltage ranges of either 20 to 42V DC or 30 to 54V DC, depending on the model. These ranges correspond to the constant current region of the driver. The actual output voltage is determined by the LED load and the set output current. It is important to ensure that the LED array's forward voltage at the desired current falls within the driver's specified output voltage range. If the required voltage is outside this range, the driver may not operate correctly or may not deliver the set current.
Does 3G Electric supply KEYSTONE TECHNOLOGIES products?
Yes — 3G Electric (S) Pte. Ltd. supplies KEYSTONE TECHNOLOGIES products. We stock the KEYSTONE TECHNOLOGIES catalog and supply genuine factory-original products with full manufacturer warranty and technical support.
