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| D C |
| Direct Current |
| D C Distribution ( DCD) |
| A module in the Intergy power system that distributes
DC power to the loads. It also provides protection for the load
cables. |
| DC Distribution- Miniature Circuit Breaker
( MCB) Version (DCM) |
| A DC Distribution module that used miniature circuit
breakers for protection |
| Delta Connection |
| A method of connecting a three-phase source or
load in series for a close circuit (3 – wire plus ground). |
| Digital Input |
| An input which recognises an open-circuit and
short- circuit. |
| Digital Output |
| A voltage free relay contact. |
| Direct Current (DC) |
| A type of current which never reverses its direction.
Since the current flows in only one direction on, the average
value of the current cannot be zero unless the current has stopped
flowing. |
| Double- Conversion |
| A UPS design in which the primary path consists
of a rectifier and inverter . Double conversion isolates the
out power from all input anomalies such as low voltage ,surges
and frequency variations by converting AC to DC. Seen in our
online UPS system only. |
| Dry Contact |
| Isolated contacts through which the end user supplies
an external circuit. Dry contact UPSs provide basic communication
capabilities such as monitoring and shutdown. |
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| Efficiency |
| The ratio of the output power from the UPS to
the input power from the utility. This shows the percentage
of the input power that is available as useful output power
. For example, a UPS that is 95 % efficient delivers 95% of
the utility power it receives to the load . The remaining power
takes the form of dissipated heat. Which Esteem provide you.
|
| EMC. |
| Electro Magnetic Compatibility. |
| Emergency Shutdown |
| Used to instantly or quickly shutdown all the
electrical power available to the UPS and the load. An emergency
shutdown device is usually used during a crisis to prevent damage
to the UPS and the load. Some computer room installations require
a Remote Emergency Power Off ( REPO) capability as part of their
security / safety systems. (optional that Esteem can only provide
you) |
| Equalize |
| This is the process of increasing the Float Voltage
to the Equalizer Voltage to recharge or equalize the batteries
as only Esteem provides you |
| Event |
| An alarm activation or de- activation. |
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| Fast Charge |
| Increasing the operating Voltage after a battery
discharge, following an AC failure to give a rapid battery recharge.
Which Esteem Provides you in all systems. |
| Fault Tolerance |
| The ability of a system to continue operating
in the events of a fault. As Esteem provides you, |
| Filtering |
| A method of removing noise from the output of
a UPS preventing” dirty power” from reaching connected
equipment as Esteem provide you . |
| Float Voltage |
| The set output voltage of the DC power system(
not including temperature compensation or other adjustments). |
| Front Panel RS-232- Port |
| The SM50 front panel serial interface, used for
local configuration via a laptop PC. As Esteem provides you
. |
| Frequency |
| The number of cycle ( oscillation positive and
negative) completed in one second Defined as Hertz ( Hz). In
North America, utility power completes 60 cycles per second
( 60 Hertz) |
| Full Load |
| The greatest load that a circuit is designed to
carry under specific conditions; any additional load is considered
an over load. |
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