How a String Monitoring Box Works in Residential Solar Systems
How a String Monitoring Box Works in Residential Solar Systems
A string monitors system is the advanced version of AJB. AJB with string monitor unit is called SMB (string monitoring box). A string monitor system has the main objective to monitor the individual string current & common bus voltage on real time basis. It also has the temperature measurement facility for the keeping a check on the temperature inside the box. The string current, voltage & temperature are measured & communicated through a RS-485/Zigbee over Modbus protocol. It should be compatible with SCADA system. It helps in easy detection & identification of fault in any string. After getting the location of the fault through a computer we can rectify the same easily.
There are two types of string monitoring systems.
- Shunt based
- Hall effect type
The main components of SMBs are
- Enclosure
- PV fuses
- Surge Protection Device
- DC Disconnector/Isolator:
- Cable Glands/Connectors
- Monitoring card
Suggested Articles
How to Safely Install Solar Panels on Metal and Asbestos Rooftops
Discover how solar systems can be installed on metal sheds and asbestos roofs, making factories more energy-efficient and sustainable
UP Electricity Tariff Increase 2015-16: Rates Rise by Rs 0.40–1.00 per Unit – What Consumers need to know
Uttar Pradesh has increased electricity tariffs for 2015-16, ranging from Rs 0.40 to 1.00 per unit. This update explains the revised rates, the sectors affected, and what consumers need to know about the tariff hike.
How to Calculate Battery Capacity for Solar Off-Grid Applications
Sizing a solar battery correctly is vital for off-grid performance and energy independence. This guide explains how to calculate battery capacity, choose the right type, and design a balanced off-grid system for uninterrupted power supply.
Solar Cell Technology: Monocrystalline vs Polycrystalline vs Thin-Film
Explore the different types of solar cells, including monocrystalline, polycrystalline, and thin-film, and learn their efficiency, applications, and benefits for solar energy systems.
500 kW Solar Power Plant Cost in UP 2025 | Latest Price, Subsidy & ROI
Thinking of setting up a 500 kW solar power plant in Uttar Pradesh? Discover the 2025 cost estimate, available subsidies, and expected ROI. Learn how commercial and industrial projects in UP can reduce energy expenses and achieve long-term savings with solar energy.
End of Rooftop Solar Subsidy for Industrial & Commercial Consumers: What You Need to Know
The rooftop solar subsidy for industrial and commercial consumers is coming to an end. This guide explains the implications for businesses, updated policies, and strategies to adopt solar power without relying on subsidies.
Delhi charges one of the highest tariffs for commercial load and industrial – average over Rs 10.00 per kWh
Delhi imposes some of the highest electricity tariffs for commercial and industrial consumers, averaging over ₹10 per kWh, impacting businesses and operating costs
How Installers Cut Costs on Solar PV Module Mounting Structures
Solar PV mounting structures can significantly impact project cost. Explore how expert installers optimize design, materials, and labor to achieve safe, durable, and cost-effective solar installations