Nuclei Tech - SCADA & Embedded Solutions

About Our SCADA & RTU Solutions

Professional RTU & SCADA Solutions for Industrial Automation

RTU (Remote Terminal Unit) is an intelligent field device used to collect data from sensors, meters, relays, and breakers, and communicate it to the SCADA control center. RTU also executes remote control commands received from SCADA.

PCB Design

Embedded System Development

IoT System Integration

With innovation and reliability at our core, we aim to empower industries with efficient, secure, and scalable automation solutions.

Role of RTU in SCADA

Data acquisition from field instruments
Communication gateway between field and SCADA
Remote control of breakers, isolators, inverters
Alarm and event generation
Time stamping and buffering

RTU Hardware Architecture

CPU Module
Digital Input (DI) / Digital Output (DO)
Analog Input (AI) / Analog Output (AO)
Communication Modules (RS485, Ethernet, Fiber)
Surge Production Device (SPD)
I/O Expansion Racks

Typical RTU Applications

Solar Inverter Monitoring Energy Meter Integration Protection Relay Monitoring Breaker & Isolator Control Transformer Monitoring Feeder Automation

After Sales Support

24x7 Technical Support

Round-the-clock assistance

Remote Diagnostics

Online troubleshooting

Firmware Updates

Regular system upgrades

AMC Services

Annual maintenance contracts

Core Competencies

Protocol Expertise

Modbus RTU,Modbus TCP, MQTT

Data Historian

Local & Cloud

Dashboard Design

Custom Solutions

WMS Integration

Seamless

Advanced SCADA Functional Features

Inverter Active Power Control

Centralized active power control from SCADA
Power setpoint control in MW or % as per EB/Grid requirement
Export limiting and derating control
Remote start/stop and ramp control
Real-time feedback of power, voltage, current & status

String Inverter & SMB Monitoring

String Inverter Monitoring

• DC & AC parameters
• Inverter efficiency
• String-wise daily generation
• Alarm and fault status

SMB Monitoring

• String-wise daily report
• Fuse & SPD status
• String mismatch detection
• Underperforming string identification

Messaging & Alert Services

Real-time fault & event notifications
Inverter, string & plant-level alerts
Daily generation & performance summaries
Configurable recipients & escalation logic

Scope of Supply

RTU Panels

I/O Modules

Communication Switches

Power Supply & UPS

SCADA Software

Protocol Configuration

Testing

Commissioning

System Architecture

Our end-to-end architecture ensures reliable data flow from field devices to control room dashboards

How It Works

Field Level

RTUs collect data from solar inverters, weather stations, meters, and protection relays via RS485, Ethernet, or wireless LoRa.

Communication Layer

Data travels through fiber optic, 4G LTE, or satellite links to the SCADA server with industrial grade encryption.

SCADA Server

Central server processes data, runs control logic, stores historical records, and generates alarms/events.

Client Access

Web-based HMIs, mobile apps, and desktop clients provide real-time visualization and control from anywhere.

Key Architectural Features

Redundant Design: Dual servers, redundant communication paths, and failover mechanisms
Cyber Security: IEC 62443 compliant with firewall, VPN, and role-based access control
Scalability: Modular architecture supports from 10 to 10,000+ field devices
Edge Intelligence: Local processing at RTU level for offline operation and reduced bandwidth
Cloud Integration: Optional hybrid deployment with AWS/Azure for analytics and remote monitoring
High Availability: 24/7 system uptime with automated health monitoring and self-recovery

Solutions

Our rugged, in-house designed embedded systems for industrial environments

Our Hardware Portfolio

We design each device for reliability and field-serviceability tested for industrial conditions and easy remote management. Our engineering team performs thorough QA and environmental testing to ensure long-term performance in harsh sites.

SMB as SCADA Integrated Device

String Monitoring Box (SMB) string-level DC measurements and wireless LoRa communication to central gateway.

String Current String Voltage LoRa Comm

SMB as SCADA Integrated Device

DC Measurements

Individual String Current (A)
String Voltage (Vdc)
Combiner Output Current (A)
Combiner Output Voltage (Vdc)
DC Power (kW)

Communication Status

SMB Wireless Communication using LoRa (Our Design)
Each SMB is equipped with a LoRa wireless communication module
Data is transmitted from SMB to Central Gateway / RTU
Communication range up to 2 kilometers in open field conditions

Power Plant Controller (PPC)

Centralized plant control & visualization system for active/reactive power, voltage regulation, and performance optimization.

Active Power Reactive Power Remote Update

Power Plant Controller (PPC)

Features

Compatible with Multiple Inverter Makes (Both String and Central)
Regulation of Active, Reactive Power & Voltage
Remote Setting, Auto-update & Remote-update features are available
Control and Visualization using Web Browser SCADA Screens
Configurable Parameters – KW, %, KVA, PR, Ramp Up Time, etc.

Power Control Features

Active Power Control
Reactive Power Control
Voltage Regulation
Manual and Automatic Control
Predefined Settings Based on Time/Season

WMS as SCADA Integrated Device

Weather Monitoring Station (WMS) integrated into SCADA provides environmental context for plant performance and forecasting.

GHI / POA Ambient Temp Wind / Rain

WMS as SCADA Integrated Device

Solar Radiation

Global Horizontal Irradiance (GHI) - W/m²
Plane of Array (POA) Irradiance - W/m²
Diffuse Irradiance

Temperature

Ambient Temperature (°C)
Module / Back-Sheet Temperature (°C)

Wind

Wind Speed (m/s)
Wind Direction (°)

Other Environmental

Relative Humidity (%)
Rainfall (mm)
Atmospheric Pressure (hPa)