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
Demystifying Battery Backup: Everything You Need to Know
Battery backup is essential for uninterrupted power at home and in industries. This guide explains different types of battery backup systems, how they work, their benefits, and tips to choose the right one for reliable energy storage.
UPNEDA Solar Subsidy 2025: How to Maximize Savings on Rooftop Solar
Discover how the UPNEDA Solar Subsidy 2025 can help you cut electricity costs and make rooftop solar more affordable. Learn about eligibility, subsidy rates, and the step-by-step application process.
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.
Financing made easy for the Rooftop Solar Projects
Switching to solar is easier than ever with flexible financing options. This guide explains how to fund your rooftop solar project through loans, subsidies, and government schemes to make clean energy more affordable and sustainable.
Solar PV Mounting Structures: Types & Installation Guide
A complete guide to solar mounting structures types in PV systems, covering fixed tilt, tracking, and rooftop installations for installers.
How to Maintain Solar Power System for Homes, Industries & Commercial Buildings
A solar power generating system converts sunlight into electricity for residential, industrial, and commercial use. This blog explains the components, working, and benefits of solar systems, helping you understand how to harness solar energy efficiently and sustainably.
Solar Installation on Sloped Roofs: Design, Mounting Systems & Best Practices
A practical guide to flat roof solar installation covering key design considerations, mounting system types, and best practices for efficient and reliable performance.
Solar PV String Voltage and Current Measurement Guide
A complete guide to DC voltage and current testing for solar PV strings and arrays, ensuring accurate performance verification during commissioning.