اپتوالکترونیک لوازم جانبی اپتوالکترونیک

Product Attributes

Introduction

Since 1970, DDP has pioneered the development of LED lamps as replacements for incandescent bulbs. The advantages of solid-state LEDs are particularly well-suited to the utility industry, where numerous lamps provide critical indications on control panels. Burned-out incandescent bulbs require costly maintenance and can create safety concerns. Replacing incandescent lamps with PowerLine LED lamps delivers years of maintenance-free operation. This catalog showcases products designed specifically for the unique demands of the power generation, transmission, and distribution industry. We offer a comprehensive product line that directly replaces virtually all indicator lamps currently in service, with no modifications required to existing equipment. Since many power stations have unique requirements, DDP engineers have also developed enhanced versions of many standard LED lamps. PowerLine LED lamps are designed as direct replacement products and offer multiple advantages over incandescent lamps. The primary benefit of PowerLine LED technology is significant cost savings through the elimination of replacement costs, reduced power consumption, and lower operating temperatures.

Features

• Long Life: The most significant advantage of PowerLine LED lamps is their predictable lifespan. LEDs are solid-state devices that operate by controlling current without heating a filament. When used within design parameters, PowerLine LED lamps can operate for over 100,000 hours (or 10 years). Additionally, LED lifespan is not reduced by switching the light on and off. In contrast, incandescent lamp lifespan is unpredictable and can suffer catastrophic failure due to shock, vibration, or cold filament inrush current.
• Lower Operating Temperature: Since incandescent lamps emit light by heating a filament, they also heat the lenses they illuminate, causing control panel lenses to discolor and eventually melt. PowerLine LED lamps generate far less heat than the incandescent lamps they replace. Furthermore, heat is dissipated through the base of the LED lamp, keeping the lens cool.
• Low Power Consumption: LEDs typically draw significantly less current than incandescent lamps. Lower power consumption not only reduces operating costs but also decreases wear on other components in the circuit, such as transformers, batteries, and power converters.
• No Cold Filament Inrush: In the cold state, an incandescent lamp filament draws ten times the current of normal operation. Switching on hundreds of incandescent lamps simultaneously causes significant voltage surges, leading to lamp failures. PowerLine LED lamps are designed with series resistors to limit operating current, eliminating cold filament current variations.
• Built-in Shunt Resistor: Residual current as low as 0.25mA can cause an LED to glow dimly in the off state. PowerLine LEDs are designed with a built-in shunt resistor to bleed off transient currents. There are multiple sources of leakage current in a circuit — transient voltages from relays or capacitor discharge can generate circuit noise. Additionally, TRIAC snubber circuits inherent in the design of some PLCs may provide leakage current of up to 5mA in the off state.
• Cost Savings: Based on an average incandescent lamp service life of three months, switching to PowerLine LEDs can achieve payback on material costs alone within one year. This payback period considers only the cost of incandescent lamps, and does not account for labor costs of lamp replacement, energy savings, operational downtime, incandescent lamp inventory and ordering costs, or other significant factors.