3
2 GENERAL
INFORMATION
2.1
DESCRIPTION
The Megger POWER MULTIMETER (Model PMM-1) is a next generation
portable battery/line operated multifunction instrument for measuring AC or DC
voltage, AC primary and secondary current, power, reactive power, phase angle
and frequency of a single or three phase electrical system. POWER
MULTIMETER is easily configured to measure the amplitude and phase angle
between any two voltage and current inputs. All measured quantities are
displayed simultaneously on an easy-to-read graphic display.
The unique firmware in the POWER MULTIMETER, combined with a built-in
microprocessor-based timer, is specifically designed to ease testing and
commissioning of protective relay systems, including induction unit pick-up and
timing tests. The internal timer responds to a variety of start and stop gates,
including the application of AC or DC voltage, and opening or closing of dry
contacts.
POWER MULTIMETER is a menu driven instrument equipped with data-
retention and TIMED data-logging capabilities. Automatically stores measured
data at user defined intervals. Transmit them to a PC on a pre-programmed time
interval or save data directly to NOV RAM memory.
Other important features include accurate phase angle measurement at very low
current levels, max hold and the high speed measurement modes.
2.2
APPLICATIONS
POWER MULTIMETER is an ideal instrument for use in general electrical
systems maintenance, in electrical machine repairs, in protective relay testing, or
in monitoring power at the electrical service entrance.
In the protective relay application area, POWER MULTIMETER is designed to
perform fast, accurate checking and testing of protective relay and meter
installations, during their commissioning and in routine maintenance.
Also, combined with a source of voltage and/or current, POWER MULTIMETER
becomes an excellent tool for testing and calibrating various types of protective
relays.
2.3
FEATURES
•
Battery and line operated, with an automatic built-in charger.
•
Rugged, ergonomic and light plastic enclosure.
Summary of Contents for PMM-1
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