Black Gold Single Phase Uninterruptible Power Supply Systems Guide Specifications
2.0kVA Industrial Rackmount
1.0Scope
This specification describes the requirements for an On-Line Uninterruptible Power Supply (UPS). The UPS will supply a computer grade AC output sinewave which is unaffected by the quality of the AC input. The input voltage shall be single phase with the output voltage being single phase.
2.0General Operation
Under normal operating conditions, the UPS's rectifier converts alternating current (AC power) to direct current (DC power), which is required for the system's inverter and battery charger. The charger supplies regulated DC power to keep the batteries constantly charged. The inverter uses pulse width modulation (PWM) that fully utilizes the characteristics of insulated-gate bipolar transistors (IGBT) to convert DC power to regulated AC power. Therefore there is a constant supply of power. The batteries will instantaneously supply the inverter DC power should an AC power line failure occur.
2.1Performance Standards
The UPS shall be designed with the applicable sections of UL, CSA, NEMA PE-1, and IEEE-587(ANSI C62.41). The UPS shall have UL 1778 listing and is CUL certified..
3.0General
3.1Materials
All materials used are of new manufacture using the latest technology and should not have been in prior service except for specified factory testing. IGBT's (insulated-gate bipolar transistors) are used exclusively in inverter and chopper sections.
3.2Components
All functioning components are solid state with no moving parts.
3.3Installation
The installation of the UPS must comply with the UPS manufacturer's recommendations that will be supplied before delivery of the UPS. Local electrical codes and the National Electric Code must be complied with. All wiring must comply exactly with what is specified.
3.4Assembly
The UPS shall be delivered fully assembled and be fully functional.
4.0System Theory and Operation
4.1Theory
AC input from the utility system is converted into DC power by a diode bridge rectifier and stepped up by the chopper. The stepped up DC power is then converted to AC power by the inverter. The output voltage waveform of the inverter will be the pulse voltage
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Black Gold Single Phase Uninterruptible Power Supply Systems Guide Specifications
2.0kVA Industrial Rackmount
waveform modulated by the PWM control using the 16 KHz switching frequency sinewave. The PWM-Modulated voltage waveform is transformed into a sine voltage waveform by the inductive component of the inverter transformer and by the capacitive component of the capacitor filter. The chopper, inverter, and charger use the IGBT with
a self-extinguishing function and a high switching speed.
4.2Modes of Operation
4.2.1Emergency (Battery Backup)
In the event the AC power from the utility system fails, the DC power is supplied from the batteries to the chopper and to the inverter to provide a continued and stable AC power supply to the load without interruption.
4.2.2Normal (Inverter)
The rectifier converts AC to DC to power the inverter, which supplies power to the critical load and simultaneously float charging the batteries.
4.2.3Battery Charge
The charger will float charge the batteries while no load is being powered by normal mode.
4.2.4Static Bypass
The load is being powered by an alternate source by being transferred from normal mode to bypass mode by the bypass switch. This mode is used during overload and maintenance repair. Power is conditioned by M.O.V.'s and a line filter during bypass operation.
5.0UPS Input
5.1System Rating The UPS's are sized to supply a load with a power factor of 0.70.
5.2Electrical Requirements
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Black Gold Single Phase Uninterruptible Power Supply Systems Guide Specifications
2.0kVA Industrial Rackmount
6.1Bypass
If the UPS unit is overloaded or develops an internal fault, the power is automatically switched from the unit's main circuit to the bypass circuit mode. The UPS equipment load will be supplied by utility power through the bypass circuit. This changeover occurs in less than 4 milliseconds. The switching period is not long enough to cause interruptions to occur in your UPS equipment load.
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Black Gold Single Phase Uninterruptible Power Supply Systems Guide Specifications
2.0kVA Industrial Rackmount
There is also a switch on the front panel (Run/Stop) that allows you to manually switch from UPS to bypass mode. (Run - UPS mode, Stop - Bypass mode).
7.0System Status and Control Indicators
7.1Panel
The UPS has a panel on the front for complete monitoring of UPS. Operation Panel:
1)Run/Stop
2)Fault indicator
3)AC Line indicator
4)Inverter indicator
5)8 Segment LED Display
The eight segment LED display will indicate the following:
1)Output Load (normal operation)
2)Battery Voltage Level (during input AC failure)
3)Self-diagnostics (UPS faults) Fatal Faults:
1)Input overcurrent
2)DC overcurrent
3)DC overvoltage
4)UPS system error
Non-Fatal Faults:
1)Output overvoltage
2)Output low voltage
3)DC undervoltage
4)Overheat
5)Battery problem
9.0Communications
UPS comes with 4 dry contact signals relayed through a DB9 male connector.
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Black Gold Single Phase Uninterruptible Power Supply Systems Guide Specifications
2.0kVA Industrial Rackmount
1)AC input present
2)Low battery
3)Inverter
4)Bypass Active
All signals are (NO) in configuration with standard AS/400 interfaces.
UPS comes with a RS232 communication port for serial communication.
10.0Reliability
Demonstrated mean time between failures (MTBF) of 200,000 hours.
11.0Warranty
Every UPS comes with a "Security Plus" Warranty. This warranty provides on- site service for 3 years after shipment including parts and labor.
12.0Options
12.1Remote Monitoring
The UPS contains a communication slot this allows the operator to field install an optional RemotEye II card. The RemotEye II card shall allow the UPS to communicate via Ethernet SNMP, connected directly to the Local Area Network. SNMP/ Web based monitoring ??? Toshiba UPS system provides comprehensive monitoring of the UPS operation. The optional RemotEye II features an HTTP (web-based) interface for Toshiba UPS. This allows easy access to the Toshiba UPS information from any PC/Network with a web browser.
12.2Environmental Monitoring Device (EMD)
The EMD is an environmental monitoring device that provides remote monitoring of temperature, humidity and other environmental conditions via standard web browser or network management systems. The EMD provides automated events notification when temperature, humidity or user defined dry contacts is out of configured tolerance.
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