Power Distribution Units (PDU)

ETI offers as part of its PowerStation line, individual branch circuit control.  The Power Distribution Units (PDU) can be integrated as part of the UPS unit or as separate modules.  Each of the PowerStation UPS products offers up to six (6) branch circuits integrated into the UPS module with individual circuit protection and power outlets.  The circuit protection can be breakers, fuses, or switches.  The power outlets can be standard, twist-lock, or military receptacles or terminal blocks.  If more than six (6) circuits are needed, the PowerStation PDU Module can provide up to sixteen (16) circuits in groups of four (4).  Custom configurations are also available.

Distribution Load Control

In conjunction with the PDU functions (in either the UPS configuration or the separate PDU Module), each of the individual circuits can be remotely controlled ON or OFF.  External dry contacts are connected via a second DB-25 connector to control these circuits.  This optional function is extremely useful in applications requiring remote control of loads or safety interlock features (de-energize equipment when racked out).  The low-energy 5 VDC logic and encapsulated solid-state power relays are safe for almost any environment.

Selective Load Shedding

As a further enhancement to the Distribution Load Control, the Selective Load Shedding feature allows the user to select less critical loads that can be shed during a power outage to extend the battery reserve time for the more critical loads.

Thermal Load Shedding

Distribution Load Control is equipped with an optional two-stage thermal shutdown feature.  The sensors can be mounted in the equipment racks or remotely.  The first stage turns ON an LED indicator and generates an audible alarm and the second stage will shed either selected or all connected loads.  This function is useful in uncontrolled or remote environments.

Dual Source Input

The PowerStation UPS is available with a Dual Source Input with Input 1 as the primary source and Input 2 as the alternate source. If Input 1 fails, the unit automatically transfers to the secondary source, Input 2. When Input 1 returns to normal, the unit automatically returns to that source. The Dual Source Input option is available with either the standard UPS configuration or with the Power Conditioning Only option providing an added degree of reliability to critical loads.

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The LEDarrays keep the operator informed as to the unit’s status. An alarm will flash its respective LED until acknowledged. Once the alarm reset is pressed, the LEDwill remain on steady until the alarm is cleared. The intelligent PDU allows control of the individual output circuits incorporating thermal and interlock interfaces for additional control and safety, plus Battleshort override. Each load can have an external interlock to turn off power to equipment when it is not fully engaged in the rack or becomes overheated. The rack may be equipped with both a thermal warning and a thermal shutdown sensor that the PDU uses to alarm and shut down all the loads to avoid damage or thermal runaway. A Battleshort signal will override both the thermal and interlock signals. An external Fan Fail or auxiliary alarm signal can also be brought in to annunciate. The high-intensity audible alarm can be heard in high noise environments, yet is easily adjustable to suit quieter conditions. The double pole input breaker provides overload and short circuit protection for the connected UPS input isolation transformer and rack fans. The PDU circuit breaker on/off operation is also interlocked to control the UPS on/off function as well. Power from the UPS is brought back to the PDU to be distributed to the loads. Each load is controlled by a double pole solidstate relay avoiding accidental operation due to shock or vibration. The elapsed time hour meter tracks the rack equipment operation for maintenance.

Therear panel provides locking connectors for the input power, output power, alarm and control signals. Appropriate jumper plugs are available for options not used in a particular rack system.

Overall, the Rugged Power product line is uniquely qualified for critical shipboard, vehicle, airborne or land-based systems combining advanced modular design features with highly reliable construction.

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The LEDarrays keep the operator informed as to the unit’s status. An alarm will flash its respective LED until acknowledged. Once the alarm reset is pressed, the LED will remain on steady until the alarm is cleared. The intelligent PDU allows control of the individual output circuits incorporating thermal and interlock interfaces for additional control and safety, plus Battleshort override. Each load can have an external interlock to turn off power to equipment when it is not fully engaged in the rack or becomes overheated. The rack may be equipped with both a thermal warning and a thermal shutdown sensor that the PDU uses to alarm and shut down all the loads to avoid damage or thermal runaway. A Battleshort signal will override both the thermal and interlock signals. An external CPU Fail or auxiliary alarm signal can also be brought in to annunciate. The display and control panel can be mounted remotely in the rack, or on the keyboard console, or on the unit front panel with only a logic-level cable connection. The high-intensity audible alarm can be heard in high noise environments, yet is easily adjustable to suit quieter conditions. The double pole input breaker provides overload and short circuit protection for the connected loads. The optional Emergency Power Off (EPO) function can remotely open the input circuit breaker. Each load is controlled by a double pole solidstate relay avoiding accidental operation due to shock or vibration. The elapsed time hour meter tracks the rack equipment operation for maintenance.

The rear panel provides locking connectors for the input power, output power, alarm and control signals. Appropriate jumper plugs are available for options not used in a particular rack system.

Overall, the Rugged Power product line is uniquely qualified for critical shipboard, vehicle, airborne or land-based systems combining advanced modular design features with highly reliable construction.

The post ETI0003-1001 Rugged Rackmount Power Distribution Unit with remote control appeared first on Rugged Systems.