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C Common.
CB Circuit breaker.
Conduit A flexible or rigid tube surrounding electrical conductors.
C.S.S. Customer Support Services.
Current rating The maximum current that a piece of electrical equipment is designed
to carry.
dBA Decibels adjusted.
dBrnC Decibels above reference noise.
DC or dc Direct current.
Digital Meter The LCD display on the front panel of the inverter module.
DIP Dual in-line package.
DPDT Double Pole Double Throw.
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. Compare to technician.
MGE MGE UPS Systems
FET Field Effect Transistor.
FREQ Frequency.
Frequency slew The change in frequency per change in time. Given in terms of Hz per
second (Hz/sec).
GND Ground
Hz Hertz, a measure of frequency; one cycle per second equals one Hertz.
Inverter mode See "on-line mode".
I Current.
IEC International Electrotechnical Commission.
IEEE Institute of Electrical and Electronic Engineers.
g — 2 Glossary 86-153061-00
Topaz S3 Inverters 0.5 kVA, 1 kVA, & 2 kVA