|
| |
| LCD |
| Liquid Crystal Display |
| LEDs |
| Light Emitting Diodes located on the front of
the UPS that inform users of various power conditions and UPS
operations. |
| Load |
| Equipment that receives power from a UPS. |
| Load Bus |
| The bus to which the Load equipment is connected. |
| Load Segments |
| Groups of receptacles on the rear panel of a UPS
which can be independently controlled. |
| Load Shedding |
| The ability to selectively shut off a set of UPS
output receptacles, extending the capacity of the UPS battery.
Some Esteem UPS models are able to shed less critical loads
by turning off selected output receptacles during an extended
power failure while maintaining power to the more critical load(s)
on the remaining output receptacles. |
| Low Voltage Disconnect (LVD) |
| A module in the Intergy power system that disconnects
the load from the batteries from the batteries from the when
the battery voltage falls below a present value. The LVD reconnects
the load to the batteries when the battery voltage rises above
a present value. |
|
| Management Information Base (MIB) |
| The structure of the database in an Intergy power
system. |
| Manual Bypass Switch (MBS) |
| A manually operated transfer switch used to bypass
the major electronics in the UPS, so the UPS can be serviced
without power interruption. |
| Mapping |
| The process of assigning physical entities to
logical entities, e.g. when a particular analogue channel (internal
or external) is assigned to be the channel used for measuring
the bus voltage. |
| Maximum System Current |
| The maximum current that can be supplied by from
an Intergy Power System (excluding batteries) under all conditions.
Normally 120% of Rated System Current. |
| MCB |
| Miniature Circuit Breaker. A precisely rated,
resettable circuit protection device. |
| MDV |
| Metal Oxide Varistor. A non-linear semiconductor
device used for surge protection or voltage limiting. |
|
| NATIONAL Electrical Code (NEC) |
| The code of standards and practices for the U.S
electrical and electronics industry. Developed by the National
Fire Protection Association of Quincy, Mass. First published
in 1896. |
| Network Transient Protector |
| An in and out RJ11 jack for telephone/modem protection(120v
models only) or RJ45 for 10Base-T network cable. It isolates
connected equipment such as modem and fax machines from “back
door” power surges. |
| Noise |
| Random, sporadic, or multi-frequency electrical
signals that become part of a transmission making the signal
or information more difficult to identify. |
| Nominal System Voltage |
| The DC output voltage generally used to describe
a type of system, usually 24 V or 48 V. |
| Nominal Value |
| A designated value which has been accepted for
the sake of convenience. For instance, nominal voltages are
values assigned to circuits so that the voltages of the circuits
can be conveniently discussed as 120 Vac nominal units, or 230
Vac nominal units. |
| Null Modem Cable |
| A special cable for connecting two RS-232 ports
or devices directly, in place of a modem connection. |
| N + X UPS Redundancy |
| This form of redundancy provides reliable UPS
operation by eliminating any single point of failure within
the UPS. |
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