Introduction
The industrial infrastructure of Ukraine faces the need to increase energy efficiency. Obsolete lighting systems, such as high-pressure mercury lamps or fluorescent lamps of the T8 type, are characterized by a low efficiency (efficiency), high operating costs and non-compliance with modern labor safety standards, for example, DSTU EN 12464-1:2016. Upgrading to intelligent light emitting diode (LED) systems allows you to reduce energy consumption by 50-70% and integrate IoT technologies for dynamic control of the light flow.
Assessment of legacy systems
Before starting the modernization project, it is necessary to conduct an audit of the existing equipment. The evaluation criteria are listed in the table below.
| Criterion | Legacy system status | Target state (LED + IoT) |
|---|---|---|
| Energy efficiency | Low (40-60 lm/W) | High (>150 lm/W) |
| Service life (L70) | 10,000 - 15,000 hours | >50,000 hours |
| Color rendering index (CRI) | < 60 | > 80 (standard for production) |
| Management | On/Off (manual) | Dynamic (presence/illumination sensors) |
Modern solutions: LED and IoT
Switching to LED technology provides better visual quality and reliability. The integration of IoT sensors allows you to adapt the lighting level to the production process. An example of a highly efficient solution is the Schneider Electric RTD805BOTP, which offers built-in control and system health monitoring functions. A comparison of technologies is presented in the next section.
Comparison table
| Technology | Annual energy consumption (per 100 kW) | Maintenance costs | Flexibility |
|---|---|---|---|
| HID/Fluorescent | 100% | High | Absent |
| LED with sensors | 35-40% | Low | High (DALI/Zigbee) |
Calculating ROI
For example, let's take a factory with an area of 2000 m2, where 100 outdated lamps with a power of 400 W each are installed. Working hours: 24/7. The cost of electricity: UAH 6/kWh.
- Annual consumption of the outdated system: 100 * 0.4 kW * 8760 h = 350,400 kWh.
- Annual expenses: 350,400 * 6 = 2,102,400 UAH.
- LED system with IoT (Schneider Electric RTD805BOTP) consumes 0.12 kW including sensors.
- Annual consumption of the new system: 100 * 0.12 kW * 8760 h * 0.7 (dimming factor) = 73.584 kWh.
- Annual expenses: 73,584 * 6 = 441,504 UAH.
- Annual savings: UAH 1,660,896.
The payback period for capital investment (CAPEX) is typically 18-24 months, including reduced lamp replacement and maintenance costs.
Implementation Roadmap
- Lighting and energy consumption audit.
- Lighting network design taking into account production zones.
- Procurement of components, including UNITEC-D E-Catalog for analog selection and Schneider Electric RTD805BOTP.
- Phased installation: first auxiliary premises, then production lines to minimize downtime.
- Commissioning and adjustment of sensor parameters.
Technical challenges
The main technical difficulties during retrofitting are the compatibility of old electrical networks with new pulsed power supply units of LED drivers. Inrush currents and the presence of harmonics must be taken into account. The use of high-quality components and the correct design of the connection scheme allow you to solve these problems.
Case studies: modernization results
The factory for the production of metal products replaced 200 lamps. Before implementation, the average illumination was 150 lux, the failure rate was 15% per year. After implementation: 400 lux, failure rate - < 1% (MTBF > 50,000 hours), energy consumption reduced by 65%.
Commissioning and validation
After completing the installation, it is necessary to measure the illumination levels according to ISO 8995-1. Acceptance{
