Atec Megger-MPRT8445 - Manual (Page 5)

MPRT
Megger Protective Relay Test System
5
FEATURES AND BENEFITS
I Large Color LCD touch-screen display - The TVI
features an easy to use and read display providing
manual control of the test set, and displays measured
values of voltage, current, along with phase angle and
frequency. Calculated values such as Ohms, Watts, VAR’s
and Power Factor may also be displayed, depending on
the test screen in use. Color contrasts accentuate vital
information. This reduces human error and time in
testing relays.
I Constant Output Power - The new MPRT employees
new high powered Voltage-Current amplifiers (VI-Gens),
which deliver maximum compliance voltage to the load
constantly during the test. Constant output power in
many cases eliminates the need to parallel current
channels together to test high burden relays.
I High resolution and accuracy - The TVI has Metered
outputs and a timer to provide extremely high accuracy.
High accuracy extends testing capability to other devices
such as transducers.
I Internal memory - The TVI provides storage of test
set-up screens and test results. Reduces testing time and
paper work. Saved test results can be downloaded into
the AVTS software database.
I Steady-State and Dynamic testing capability - The
MPRT provides, either through manual control or
computer control, both steady-state and dynamic testing
of protective relays. This includes programmable
waveforms with dc offset and harmonics.
I Display screen prompts operator - The TVI features
a display screen that prompts the user with easy to use
function buttons. Single button operation saves time in
testing relays and minimizes human error.
I Display screen provides five different languages -
The TVI display screen prompts the user in English,
Spanish, Portuguese, French or German.
I Output current and voltage sinewaves are generated
digitally - MPRT outputs do not vary with sudden
changes in input voltage or frequency, which increases
test accuracy and reduces testing time.
I Memory metering - Allows the user to set test currents
and voltages faster. Reduces heating of device under
test.
I Digital inputs and outputs - MPRT has 10
programmable inputs, and 6 programmable outputs
provide timing and logic operations in real-time with the
output voltage and currents. Binary Inputs can be
programmed, using Boolean logic, for more complex
power system simulations. This provides a low cost,
closed loop, power system simulator.
I Circuit breaker simulator - MPRT’s binary outputs
provide programmable normally closed and normally
open contacts to simulate circuit breaker operation for
testing reclosing relays. Sequence of operation, timing,
and lockout are easily tested.
I Performs transient tests - Perform acceptance or
troubleshooting tests by replaying digitally recorded
faults or EMTP/ATP simulations in the IEEE- C37.111,
COMTRADE Standard format.
I Perform End-to-End tests - Using AVTS software and a
portable GPS satellite receiver, the MPRT performs
satellite-synchronized end-to-end dynamic or transient
tests. Provides precisely synchronized testing of remotely
located complex protection schemes.
I Wide-ranging output frequency - The output
frequency of the current and voltage channels can be set
for any frequency from dc to 1 kHz. Popular test
frequencies such as 25, 50, 60 and 100 Hz are easily set
and controlled. Provides ultra-flexability to save time
and lower costs.
I RS-232 serial port - The RS-232 port provides a
computer interface to perform automatic testing.
I Ethernet port - The Ethernet port provides a high-
speed computer interface. This can be used to quickly
download transient waveform data and update test set
firmware via internet.
I IEEE-488GPIB - The IEEE-488 is an OEM preferred
interface for control of the unit. This interface is
preferred, when using the unit with other IEEE-488
devices. It can also provide high speed downloading of
transient data.