Clary Battery Backups for Traffic Signal Applications
Clary Corporation specializes in Uninterruptible Power Supply (UPS) systems designed specifically for traffic signal applications. Their SP Series models are engineered to provide reliable power protection in harsh outdoor environments[4][6].
Key Features of Clary SP Series UPS:
- Online double conversion technology
- Operating temperature range: -40°C to +74°C (-40°F to +165°F)
- Capacity: 1,250 VA, 875 Watts (1400 watts peak load for 10 seconds)
- Local keypad programmability and display
- Integrated Power Interface Module (PIM) with external bypass
- Eight programmable relays with 16 assignable status conditions
- Multiple communication options (RS232, SNMP, TCP/IP)
- Compliant with multi-state DOT and NEMA standards
The SP Series UPS can keep an intersection running for up to 8 hours or longer during power outages[4]. It offers both online and full flash modes for system flexibility and provides clean, regulated power to protect sensitive equipment inside traffic cabinets[4][6].
Online Double Conversion Technology
Clary's battery backups utilize online double conversion technology, which is considered the most advanced and reliable UPS configuration[3][9].
How Double Conversion Works:
1. AC input power is converted to DC
2. DC power is isolated and corrected
3. DC is then converted back to clean, regulated AC output
This process effectively isolates the connected equipment from power disturbances, including[3][7][9]:
- Voltage sags and spikes
- Frequency variations
- Harmonic distortion
- Complete power failures
The online double conversion design ensures a continuous, high-quality power supply with zero transfer time to battery operation during outages[3]. This makes it ideal for critical applications like traffic signal systems where even momentary interruptions can cause issues.
Clary UPS Installation in Traffic Cabinets
Clary SP Series UPS systems are designed to fit inside most existing traffic cabinets without compromising the cabinet wiring[4]. For installations requiring additional space, Clary offers optional NEMA 3R Type II and Type III cabinets[4][8].
Installation Benefits:
- Non-invasive to existing cabinet wiring (only utility line is rerouted)
- Compatible with most traffic cabinets
- Small footprint allows integration into existing infrastructure
- Optional stand-alone cabinets available for larger installations
Clary's UPS solutions have helped traffic departments become more proactive in managing power issues, ensuring that first responders can focus on community safety rather than traffic control during emergencies[6].
While I cannot provide direct images due to restrictions, Clary's website and product documentation offer detailed information on their traffic UPS installations and cabinet integration options[6][8].
Citations:
[1] Clary Corporation: Power Protection Systems, Traffic UPS, Military ... https://www.clary.com
[2] Clary | Battery Backups - Texas Highway Products https://www.texashighwayproducts.com/battery-backups
[3] What are the Different Types of UPS Systems? - Vertiv https://www.vertiv.com/en-us/about/news-and-insights/articles/educational-articles/what-are-the-different-types-of-ups-systems/
[4] [PDF] CLARY-SP-Series-Model-PD-Integrated-PIM.pdf - Temple, Inc. https://www.temple-inc.com/images/pdfs/BBS-UPS-Systems/CLARY-SP-Series-Model-PD-Integrated-PIM.pdf
[5] [PDF] Uninterruptible Power for Traffic Signal Applications https://ppm.opkansas.org/wiki/images/TRF_PQL_TS_CAT_Clary_BatteryBackupUPS.pdf
[6] Traffic/ITS UPS, SP Series, for critical traffic applications https://www.clary.com/traffic-its/
[7] Double Conversion UPS – Benefits & Comparison - Mitsubishi Electric https://www.mitsubishicritical.com/technologies/double-conversion-vs-line-interactive/
[8] SP Series Cabinet | Clary Corporation https://www.clary.com/product/sp-series-cabinet/
[9] How double-conversion online UPS operate? - Schneider Electric https://www.se.com/th/en/faqs/FA383827/
[10] [PDF] The ultimate traffic protection for the harshest environments https://ppm.opkansas.org/wiki/images/archive/20141208234631!TRF_PQL_TS_CAT_Clary_BatteryBackupUPS.pdf