SEL RTAC HMI and Display Pages
Key Takeaway
How to build the optional web-based RTAC HMI with acSELerator Diagram Builder (SEL-5035) — one-lines, metering, alarms, trends, and operator controls.
Quick Answer
Most RTAC models support an optional web-based HMI for operator displays on the substation LAN. Screens are developed with acSELerator Diagram Builder (SEL-5035), not as a free built-in feature on every SKU. SEL-3505/3505-3 do not offer the graphical web HMI.
Diagram Builder (SEL-5035)
Drag-and-drop canvas with symbol library (breakers, transformers, buses, meters). Dynamic elements bind to RTAC tags for live data, state animation, and color changes.
Display Types
- One-line diagram — Bus, breaker, line symbols with live state
- Metering — MW, MVAR, kV, A numeric displays
- Alarm list — Active alarms with priority and acknowledge
- Trends — Historical analog tag charts with time window
Operator Controls
Pushbuttons for breaker trip/close (with confirmation dialog). Setpoint entry fields. Settings group selection. Password-protected access levels.
RTAC HMI vs SCADA
RTAC HMI is local substation-level. For enterprise SCADA with historian and multi-substation overview, use Ignition or Geo SCADA alongside the RTAC. See also enteliWEB for building automation HMI comparison.
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Frequently Asked Questions
Via standard web browser navigating to the RTAC's IP address on the substation LAN. No additional software required.
RTAC HMI provides local substation-level visibility. For enterprise SCADA with historian and multi-substation overview, a dedicated SCADA platform complements the RTAC HMI.
Still have questions about your setup? Talk to an engineer or call (210) 405-4248.