1kVA Online UPS Uninterruptible Power Supply

Runtime depends on connected load and battery capacity. A 1kVA UPS powering a lightly loaded traffic controller cabinet, paired with additional battery banks such as Alpha's AlphaCell batteries, can typically sustain backup power for several hours during an outage, while heavier connected loads reduce available runtime proportionally.

Most 1kVA-class UPS systems, such as Alpha's FXM HP modules, are configured with up to four AlphaCell batteries (models including 195XTV, 240XTV, 3.5HP, or 4.0HP) to achieve the desired runtime and redundancy needed for continuous traffic signal and ITS power backup.

An online (double-conversion) UPS continuously converts incoming AC to DC and back to AC, providing seamless power with zero transfer time. A standby UPS only switches to battery power when it detects an outage, causing a brief transfer delay. Online UPS systems are preferred for critical traffic signal and ITS applications where momentary power loss can disrupt operations.

Outdoor traffic and ITS UPS systems are typically housed in Type 3R rated aluminum enclosures that protect internal components from rain, snow, and dust while withstanding extreme temperature swings, ensuring reliable operation of the UPS module, batteries, and transfer switch in harsh roadside environments.

Yes, a 1kVA-class UPS such as the FXM HP 1100W module is designed to back up NEMA M, P, and 336 traffic controller cabinets and Advanced Transportation Controller (ATC) systems, maintaining signal operation through outages, voltage sags, and brownouts without interrupting intersection control.

Traffic UPS systems can be equipped with AlphaGuard battery balancing or the Remote Battery Monitoring System (RBMS) Plus, both providing real-time visibility into battery health, charge status, and system performance, helping agencies reduce unnecessary truck rolls and proactively schedule maintenance before failures occur.