MGE UPS Systems EX-5, EX-7, EX-11RT manual Iec

EX 5/7/11RT Systems

dBrnC	Decibel above reference noise.
DC or dc	Direct current, or voltage.
Earth ground	A ground circuit that has contact with the earth.
Electrician	Refers to an installation electrician qualified to install heavy-duty electrical components in
	accordance with local codes and regulations. Not necessarily qualified to maintain or repair
	electrical or electronic equipment.
FET	Field effect transistor.
Freq.	Frequency.
Frequency slew rate	The change in frequency per unit of time. Given in term of Hz per second (Hz/sec.).
GND	Ground (safety).
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.
L	Line.
LCD	Liquid-Crystal Display unit.
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.
N	Neutral.
NC	Normally closed.
NO	Normally open.
NEC	National Electrical Code.
NFPA	National Fire Protection Association.

G — 2 Glossary 86-86000-00 B00