Product Specification for the SP Series Traffic UPS
OVERVIEW
The Traffic UPS is a turnkey, true on-line, power conditioner and battery backup or uninterruptible power system (UPS) designed for transportation and traffic applications. The traffic UPS Battery Backup system is capable of operating, up to its rated power level, in extreme environments with existing equipment on the street today including any and all signal heads (i.e., Incandescent, LED, Neon, etc.). Where shown on plans, the Traffic UPS shall be furnished and installed in conformance with the following specification.
1.0 Operation
A. The Traffic UPS shall be capable of producing – simultaneously -- fully regenerated, conditioned and true sine wave, standby and continuous AC outputs.
B. Suggested operating mode for respective outputs during power failure: Continuous output provided for signal controllers and modems; Standby output provided for signals in flash mode operation (optional delay timer available for short-term battery run under full cycling operation).
C. Up to the maximum rating, the Traffic UPS shall be capable of running any combination of signal heads, whether Incandescent, LED or Neon, by any manufacturer, regardless of power factor, without overdriving the poorer power factor LED heads which may cause early degradation, low luminosity or early signal failure.
D. Upon loss of utility power the Traffic UPS shall insert battery power into the system via a supplied Power Interface Module (PIM). In case of UPS failure and/or battery depletion, the PIM will ensure that the UPS will drop out and, upon return of utility power, the traffic control system will default to normal operating mode.
E. The Power Interface Module shall enable removal and replacement of the Traffic UPS without shutting down the traffic control system (i.e. “hot swap” capability). Connectors shall be equipped with a “safety interlock” feature.
F. For 170 or “California” style cabinets, upon loss of power the Traffic UPS shall actuate the existing Flash Transfer Relays (FTRs) and Mercury Contactor (MC) to force the traffic control system into Flash Mode operation.
G. Existing Flasher Modules and Flash Transfer Relays shall be utilized.
H. To facilitate emergency crews and police activities, the Traffic UPS shall be compatible with police panel functions (i.e. “Signals OFF” switch must kill power to the field wiring even when on UPS/Battery power).
I. The Traffic UPS shall not duplicate or take over flash operation or flash transfer relay functions.
J. The Traffic UPS shall be capable of providing continuous, fully conditioned, regulated, sinusoidal (AC) power to selected devices such as signal controllers, modems, communications hubs, NTCIP adapters and video equipment.
2.0 Description
The Traffic UPS shall consist of three major components, the Electronics Module, the Power Interface Module, and the Battery System.
2.0.1 The Electronics Module shall consist of the following:
A. True sine wave, high frequency inverter utilizing IGBT technology,
B. 3-stage, temperature compensated, battery charger,
C. For connection from the Electronics Module to the Power Interface Module and Battery System, dedicated harnesses shall be provided with quick-release, keyed, circular connectors and braided nylon sleeving over all conductors,
D. local and remote control of UPS functions,
E. local and remote communications capabilities,
F. and be capable of accepting an NTCIP-ready adapter or a Spread Spectrum Radio modem.
G. Separate Power Interface Module (PIM) for inserting power safely and reliably.
2.1 Mounting/ Configuration
2.1.1 NEMA Style: mounting method shall be shelf-mount or wall-mount.
2.1.2 170 Style: mounting method shall be 19” rack-mount. Shelf angles or rails, typically supplied by others, are available as optional accessories.
2.1.3 External: A separate, stand-alone, pad-mounted, outdoor (NEMA 3R) enclosure shall be available should there be inadequate room in the signal cabinet or should the consulting/traffic engineer prefer independent, external mounting.
2.2 Battery System
2.2.1 The battery shall be comprised of extreme temperature, deep cycle, AGM/VRLA (Absorbed Glass Mat/ Valve Regulated Lead Acid) batteries that have been field proven and tested by the U.S. military.
2.2.2 The battery system shall consist of one or more strings (typically 4 or 6 batteries per string) of extreme temperature, deep cycle, AGM/VRLA (Absorbed Glass Mat/ Valve Regulated Lead Acid) batteries.
2.2.3 Batteries shall be certified to operate at extreme temperatures from –40°C to +74°C.
2.2.4 The batteries shall be provided with appropriate interconnect wiring and a corrosion-resistant mounting trays and/or brackets appropriate for the cabinet into which they will be installed.
2.2.5 The interconnect cable shall be protected with abrasion-resistant nylon sheathing.
2.2.6 The interconnect cable shall connect to the base module via a quick-release circular connector.
2.2.7 For purposes of safety and proper operation, the circular battery connector shall have interlocking pins to prevent turn-on if batteries are not connected, and to shut off the UPS should the batteries be disconnected.
2.2.8 Battery construction shall include heavy-duty, inter-cell connections for low-impedance between cells, and heavy-duty plates to withstand shock and vibration.
2.2.9 The top cover shall use tongue and groove construction and shall be epoxied to the battery case for maximum strength and durability.
2.2.10 An optional lifting handle shall be available on most battery models.
Nominal Input Voltage 120 VAC, Single Phase
Input Voltage Range 85 VAC to 140 VAC
Input Frequency 50 or 60 Hz (+/- 5%)
Input Configuration 3 Wire (Hot, Neutral & Ground)
Input Current (Max. draw) 7.2 amps, Power-Factor Corrected
Input Protection Input Fuse (12 amps)
3.2 Output Specification
Nominal Output Voltage 120 VAC, Single Phase
Power Rating 1 kVA (1000VA/700W)
Output Voltage Regulation +/- 2% for 100% step load change and from
High battery to Low battery condition
Output Frequency 50 or 60 Hz (+/- 5%)
Output Configuration Keyed, circular connectors and duplex receptacle
Output Wave Form True Sinewave
Overload capability 110% for 10 minutes
200% for ½ second
Fault clearing Current limit and automatic shutdown
Short circuit protection Current limit and automatic shutdown
Efficiency 85% at full load
Load Power Factor .7 lagging through unity to .7 leading
4.1 Dimensions:
Rack-mount: Width = 19”, Depth = 12”, Height = 3.5” (2U)
Shelf-mount: Width = 19”, Depth = 12”, Height = 3.5”
Wall-mount/Unistrut Rail mount: Width = 6.9”, Depth = 9.5”, Height = 16”
Separate Power-Interface Module = Width = 6”, Depth = 2.8”, Height = 9”
4.2 Weight: UPS: 20 lbs., Shipping weight: 25 lbs.
5.1 The UPS shall meet or exceed NEMA temperature standards from –40°C to +74°C.
5.2 The UPS shall be shall be certified and field proven to meet or exceed NEMA temperature standards. A certificate of compliance shall be made available upon request.
6.1 The battery system shall be certified and field proven to meet or exceed NEMA temperature standards from –40°C to +74°C.
6.2 Ampere-Hour ratings (see table 1)
6.3 Hydrogen gas emissions: must meet Mil-Spec #MIL-B-8565J
7.1 Alarm Function Monitoring: The traffic UPS shall come standard with a DB-9F connector with open collectors (40 V @ 20 mA) indicating:
7.1.1 Loss of Utility Power,
7.1.2 Inverter Failure, and
7.1.3 Low Battery.
7.2 An RS232 Interface shall be provided via a DB-9F connector allowing full, interactive, remote computer monitoring and control of the UPS functions.
7.3 Front Panel controls: Power ON, Cold (DC) Start, Alarm Silence, Battery Test, Bypass Breaker, and DC/Battery Breaker.
8.1 Calculated MTBF is 100,000 hours based on component ratings.
8.2 When Bypass and Power Interface Module are included, system MTBF increases to 150,000 hours.
9.0 Battery Mounting
9.2 Swing-out Battery Box, mounts on right rail inside back door of 170 type cabinets. Box is designed to hold six (6) OP72A batteries, up to four (4) OP72B or OP72C batteries, and up to three (3) OP72D batteries.
9.3 Adjustable Delay-timer to provide up to 10 hours of full cycling while on battery before switching to flash mode (only available where 100% low-power/LED signals and ped heads are used). Batteries must be sized properly to fully utilize this feature.
9.4 Service pedestal-mounting option.
9.5 One-shot ground pulse to trigger External Start upon return of AC power.
9.6 Dial-out modem for wireless or land line communication
9.7 Enhanced battery charger provides accelerated charging capacity (contact factory for details and proper application).
10.0 Serviceability & Maintainability
10.1 MTTR (Mean-Time-To-Replace or Repair)
10.1.1 Electronics: 15 minutes or less
10.1.2Battery System: 15 minutes or less
Standard warranty terms cover entire Traffic UPS including battery. Terms are one-year parts and labor with labor F.O.B. factory.