Relay Tripping Curves PRO2 vs. GstarCAD

Relay Tripping Curves PRO2 (RTC2) is a specialized Windows application crafted by protection engineers for their colleagues in the field. It allows users to create trip curves for relays, circuit breakers, and transformers on a log-log graph, which helps ensure that the selectivity between various devices is confirmed and generates detailed technical reports essential for engineering tasks. While field testing equipment can provide data, they often lack the ability to relate these readings to the main system, visualize the curves, or confirm that settings are in coordination, a void that RTC2 successfully fills. Noteworthy features include compatibility with seven relay manufacturers, mirroring the original display and terminology, ten types of circuit breaker trip units that cover L/S/I/G zones, and a transformer damage curve that adheres to ANSI/IEEE C57.109-2018 standards. The software also offers functionalities for analyzing inrush and short-circuit currents, performing ΔT selectivity calculations among devices, and generating PDF reports that include primary-equivalent current, curve equations, plots, and signatures. Additionally, it is completely bilingual, supporting both English and Spanish, and functions entirely offline. Users have the opportunity to try a free DEMO version with no time limitations, while the paid versions provide a perpetual license for a one-time fee, making it accessible for engineers with varying needs. This combination of features and flexibility ensures that RTC2 remains an invaluable tool for professionals in the field.

GstarCAD is a professional DWG-native CAD platform designed for businesses that require reliable, high-performance CAD software without the high licensing costs associated with traditional CAD solutions. Recognized as one of the leading alternatives to AutoCAD®, GstarCAD helps organizations maintain complete DWG compatibility while reducing total cost of ownership and improving engineering productivity. Built for architects, civil engineers, mechanical engineers, MEP designers, manufacturers, construction companies, infrastructure consultants, surveyors and industrial organizations, GstarCAD enables seamless collaboration by supporting native DWG and DXF files without conversion. Existing drawings, templates, standards and workflows remain fully compatible, allowing teams to transition quickly with minimal disruption. The software provides a familiar AutoCAD-like user interface, commands, aliases and keyboard shortcuts, enabling users to become productive almost immediately. Organizations migrating from AutoCAD®, DraftSight®, BricsCAD®, ZWCAD®, IntelliCAD® or nanoCAD® can significantly reduce software expenses while maintaining professional functionality and user experience. GstarCAD includes comprehensive tools for professional 2D drafting, 3D modeling, technical documentation, detailing and drawing management. Key capabilities include Dynamic Blocks, Sheet Set Manager, Express Tools, PDF import and export, Xrefs, advanced layer management, parametric constraints, Design Center, drawing comparison, batch plotting, data extraction, customizable workspaces and GPU-accelerated performance for handling large engineering projects efficiently. For enterprises and software developers, GstarCAD offers extensive customization through LISP, VBA, .NET, GRX API and COM automation, making it possible to migrate existing CAD applications and automate engineering workflows with minimal redevelopment. This protects previous software investments while supporting future