DC or dc
Direct current, or voltage.
Digital Meter
The LCD display on the front panel of inverter system.
Earth ground
A ground circuit that has contact with the earth.
ECO Mode
Operating mode by which the load is supplied directly by the AC source if it is within the
tolerances defined by the user. This mode reduces the consumption of electrical power.
Electrician
Refers to an installation electrician qualified to install high-energy electrical components in
accordance with national and local codes and regulations. Not necessarily qualified to main-
tain or repair electrical or electronic equipment. Compare to Technician.
EPO
Emergency Power Off. Used to switch all UPS/critical power OFF.
For emergency
power shutdown only.
Frequency slew rate
The change in frequency per unit of time. Given in term of Hz per second (Hz/sec.).
GND
Electrical ground.
Hz
Hertz, frequency measurement unit, 1Hz is one cycle per second.
Inverter mode
See “on-line” mode.
I
Current.
IEC
International Electrotechnical Commission.
IEEE
Institute of Electrical and Electronic Engineers.
Input branch circuit
The input circuit from the building power panel to the equipment.
Inverter
An electrical circuit that generates an AC voltage source from a DC voltage source.
IGBT
Insulated gate bipolar transistors.
I/O
Input/Output.
I/T or IT
Information Technology.
kVA
KiloVolt-Ampere; is equal to 1000 Volt-Ampere.
kW
True power. Kilo-Watt = 1000 Watt.
L
Line.
LCD
Liquid-Crystal Display.
LED
Light Emitting Diode.
Mains or Mains 1
Main AC input source.
Mains 2
Bypass AC input source.
mA
Milliampere.
MAX.
Maximum.
MCM
Thousand circular mil; standard wire sizes for multiple stranded conductors over 4/0 AWG in
diameter. M is from Roman numerical system indicating 1000.
Module
Refers to individual power inverter module.
N
Neutral.
NC
Normally closed.
NO
Normally open.
NEC
National Electrical Code.
Galaxy 3000 10-30kVA
Glossary
G — 2
86-172010-00 C05
Содержание Galaxy 3000
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