Atec Megger-MPRT8445 - Manual (Page 8)

MPRT
Megger Protective Relay Test System
8
Power
The Watts displayed is the calculated value based on the displayed
formula. Nine different formulas are available.
Range: 0 to 15 kW
Accuracy: ± 0.525 % of VA ±1 least significant digit
The DC IN input terminals
Range:
0 to ±10 V DC
0 to ± 20 mA DC
Accuracy: ±0.02% Typical
±0.05% Max
Resolution: .0001/.001
Measurements: Average
Timer-Monitor
The Timer-Monitor (Binary Inputs) are designed to monitor and
time-tag inputs, as a sequence of events recorder. In addition, the
binary input controls enable the user to perform logic AND/OR
functions on the inputs, and conditionally control the binary
output relays to simulate circuit breaker, trip, reclose and carrier
control operation in real-time. The Timer function displays in
Seconds or Cycles, with the following range and resolution:
Seconds: 0.0001 to 99999.9
(Auto Ranging)
Cycles: 0.01 to 99999.9
(Auto Ranging)
Accuracy: ±0.001% of reading, typical. ±2 least significant digit,
±0.005% of reading from 0 to 50° C maximum.
Binary Inputs- Start/Stop/Monitor Gates
10 identical, independent, galvanically isolated, Start/Stop or
Monitor circuits are provided. To monitor operation of relay
contacts or trip SCR, a continuity light is provided for each input
gate. Upon sensing continuity the lamp will glow and a tone
generator will sound. In addition to serving as Timer/Monitor
inputs, the Binary Inputs may be programmed to trigger binary
output sequence(s). Binary Inputs can also be programmed using
Boolean logic for more complex power system simulations.
Input Rating: up to 300 V AC/DC
Binary Output Relays
6 identical, independent, galvanically isolated, output relay
contacts accurately simulate relay or power system inputs to
completely test relays removed from the power system. Binary
outputs simulate normally open / normally closed contacts for
testing breaker failure schemes. Outputs can be configured to
change state based on binary input logic (Boolean logic is
available for more complex simulations), or a specified time delay
after a logic input condition.
Contact Rating: Up to 400 Volts peak, AC/DC, 1 Amp
continuous, 3 Amps Max.
Waveform Generation
Each output channel can generate a variety of output waveforms
such as: DC; sinewave; sinewave with percent harmonics at
various phase angles; half waves; square waves with variable duty
cycles; exponential decays; periodic transient waveforms from
digital fault recorders, relays with waveform recording capability
or EMTP/ATP programs, which conform to the IEEE C37.111
COMTRADE standard format. In addition, each output channel has
input BNC connector for amplification of external analog signals.
Waveform Storage
Each output channel can store waveforms for playback on
command. End-to-end playback of stored waveforms is possible,
when triggered externally by a GPS receiver. Each channel can
store up to 256,000 samples.
Protection
Voltage outputs are protected from short circuits and prolonged
overloads. Current outputs are protected against open circuits and
overloads.
Ancillary Interfaces
On the back panel of the MPRT are the RS-232, Ethernet, IEEE-
488 GPIB, Trigger In, Trigger Out, Clock In, and Clock Out.
Temperature Range
Operating: 32 to 122° F (0 to 50° C)
Storage: -13 to 158° F (-25 to 70° C)
Relative Humidity: 5 - 90% RH, Non-condensing
Dimensions
Unit Enclosure
17.2 W x 8.75 H x 18.5 D* in. (430 W x 218 H x 463 D mm)
*Includes 2.5” depth of floor stand-offs
Weight
Weight varies depending on the number of output modules in the
system. The weights shown below are for a complete three-phase
test system.
Model 8415:
Model 8430:
41.8 lb. (18.9 kg) 41.8 lb. (18.9 kg)
Safety, EMC, RFI and ESD Conformance
IEC 61010-1, Amendments 1 and 2, EN 50081-2, EN 50082-2,
EN 61000-3-2, 61000-3-3, IEC 61000-4-2/3/4/5/6/8/11.
Shock, Vibration and Temperature
To simulate the worst field conditions the unit was tested in
accordance with Military Standard MIL-STD-810 for temperature,
humidity, shock, and vibration.
Enclosure and Transit Cases
The unit comes mounted in a rugged enclosure for field
portability. There are three versions of the enclosure. The L
version has carry handles on the sides for easy mobility, and a
carry strap that connects to the chassis. Small fold up feet built
into the bottom of the chassis serve to tilt the face of the unit up
when operating on a bench top. The enclosure has vertical stand-
offs on the back that allows the unit to be operated vertically off
the floor. The H version is the same as the L with an additional
MPRT in optional soft-
sided case.
One-piece hard-
sided case.
Two-piece hard-sided case.