PI-4000B
Primary Circuit Breaker Test Set
·
Input: 208-240 or 480 VAC +/- 10% ( Switch
Selectable)
·
45KVA Continuous
( Test up to 4000 Amp Circuit Breakers)
·
Digital
Memory Ammeter Controller MAC-20
·
Programmable
Output Phase Angle with SCR Controller
·
Motorized
Vernier with Manual Override for Fast Adjustment
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Regulate
Current Hold Feature for Long Time Testing
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Preset
ON Times For Convenient Jogging of Output Currents
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Rugged
Solid Copper Universal & Horizontal 1/2” and 3/4” Output Stabs
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DESCRITION PI-4000B is a
versatile and technologically advanced primary injection test set capable of
testing circuit breakers up to 4000 amperes frame size. It incorporates an
output transformer with dual primaries to facilitate its use on power sources
of 480 VAC as well as 240 and 208 VAC, and dual secondaries to
provide optimal impedance matching to a wide range of breaker sizes. An
internal voltage sensor automatically configures the AC control power section
to be energized only when properly configured for the applied voltage. PI-4000B is
constructed in a rugged steel enclosure with removable sides and top for easy
access to internal components. The sides are clear of protruding components,
and full-width handles with provisions for lifting hooks are on both ends.
Locking swivel castors on all four corners provide ease of mobility. The
entire test set has been designed for reliability, ruggedness, and ease of
use. MAC-20
instrumentation controller provides advanced state of the art accuracy and
convenience for testing The unique
manual / motorized vernier design increases your test reliability and
productivity. The vernier position is
displayed on an LED indicator bar graph. PI-4000B features temperature protection one for the output
bus, and the other for the vernier Powersatat™. If either temperature exceeds
a safe operating level, the interlock is asserted and the output section is
de-energized. Primary catastrophic overload protection for the test set is
accomplished with input fuses having high interrupting current capacity. |
APPLICATIONS This test
set will test low-voltage, molded-case and metal-clad, direct acting AC
circuit breaker from various manufactures. The test set can also be used on
high current applications like ratio transformers, and heat runs. Using
SCR’s the PI-4000B eliminates closing time errors. Initiation at the
zero crossover point eliminates DC offset in the current waveform and results
in accurate, repeatable test results even with short-duration currents for
high speed solid state or electromechanical trip devices. ADVANCED FEATURES Serial
port: This
standard serial port may be connected to a printer, computer, or other device
to print or store time and current values of test results in ASCII format. It
is set for 9600 baud, 8 bits, 1 stop bit, no parity. This interface enables
you to download data into various computer software programs. Remote Terminal Jack:
This RJ-12 modular jack provides a six wire connection to a remote
serial terminal, which provides complete monitor and control functions as
well as advanced features such as serial number entry and date/time
functions. Complete details will be provided with special firmware for this
option. Initiating Control: The
advance initiate circuitry provides both pulse preset modes for cycles or seconds for output duration. The
pulse mode automatically pulses the output to any preset programmed duration.
This provides additional testing capabilities for electromechanical and solid
state trip devices. A short preset pulse duration also allows for instantaneous
tripping without preheating the breaker under test. A long preset time can
used for heat runs on cables or other devices up to maximum 9999 seconds. Zero DC Offset: Use of digitally controlled SCR’s
instead of a contactor to initiate the output of the test set eliminates
closing time error and thereby ensures precise initiation at the zero
crossover point of the output current waveform every time. Initiation at the
zero crossover point ensures symmetrical output current by eliminating DC offset in the current
waveform. Therefore accurate, repeatable test results are assured even with
currents of very short duration, as when conducting tests of instantaneous or
short delay trips |
Monitor
Ammeter Controller
MAC-20
|
INITIATE key: This key is used to
turn ON the output of the test set. The LED in the key indicates that the
MAC-20 is attempting to turn the output ON.
In MOMENTARY mode, the key must be held to keep output current on. In
MAINTAIN mode, once current is detected, the output will stay on until the
breaker trips, or the STOP or RESET button are pressed. STOP key: This key is used to
turn the output of the test set OFF.
Use of this key is usually necessary only when in MAINTAIN mode, and it
is necessary to abort the test before the breaker trips. The STOP key is also
used to access peak RMS and last average RMS values. See description of CURRENT DISPLAY for details. RESET key: This key resets the
displays on the MAC-20, and arms the pulse reading system. The LED on the key
indicates that the system is reset and armed. RESET also takes the unit out of PRESET ADJUST mode. DOWNLOAD key combination: On models equipped
with a printer option, the STOP and RESET keys may be pressed simultaneously
to send the time and current readings in ASCII format to a printer or
computer, via the serial port. MAINTAIN key: This key toggles
the MAINTAIN or MOMENTARY mode for initiation; its LED indicates that this
mode is enabled. When in MAINTAIN mode, the INITIATE key need only be pressed
briefly to turn output on. For test sets with motorized vernier, the MAINTAIN
key may be pressed while output is ON to provide automatic current hold
feature. The LED in the MAINTAIN key will blink while this mode is set, and
the vernier motor will be activated whenever the current varies more than 5
amperes from the value displayed when the key was pressed. The key may be
pressed again to return to normal mode. STOP or RESET will also discontinue
current hold. NORMALLY OPEN key: This key is used to
set the Normally Open contacts mode when testing a device with an normally
open auxiliary contacts. In N.O.
mode, the timer starts as soon as current (about 3% of range) is detected
after the INITIATE key is pressed, and stops when the STOP key is pressed or
a break in continuity is sensed at the CONTACTS binding posts. Timing
accuracy in this mode is typically +/- 0.01 seconds. NORMALLY CLOSED key: This
key is used to set the Normally Closed contacts mode when testing a device
with an normally closed auxiliary contacts.
In N.C. mode, the timer starts as soon as current (about 3% of range)
is detected after the INITIATE key is pressed, and stops when the STOP key is
pressed or a break in continuity is sensed at the CONTACTS binding posts.
Timing accuracy in this mode is typically +/- 0.01 seconds. |
Current Latch key
combination: When the N.O. and N.C. keys are
pressed simultaneously, both LEDs light, indicating C.L. mode (Current
Latch). This is the normal power-up default mode for the test set, and is
recommended for all tests. In this mode, current is continuously sampled, and
when it exceeds approximately 10% of the current range value, the timer
starts, and calculation of pulse current begins. When current stops the timer
stops and the final value for pulse current is calculated and displayed as
well as the time. PRESET key: This key toggles the PRESET ADJUST
mode, indicated by illumination of its LED. This feature is used to set current
test durations for short times (jog or instantaneous) using the cycles or
long times (heat runs) using the seconds modes. When not in PRESET mode, the
LED will flash if the displayed time exceeds the preset limit. TIME DISPLAY: This 4 digit LED display
indicates the elapsed time of a current pulse. In SECONDS mode, it displays
time up to 9.999 seconds, then autoranges to 99.99 seconds, 999.9 seconds,
and 9999 seconds. In CYCLES mode, it reads time (based on 60 Hz), up to 999.9
cycles, then autoranges to 9999 cycles SECONDS key: This
key normally selects the SECONDS timebase.
SECONDS or CYCLES timebase may be selected at any time before, during,
or after a test. CYCLES key: This key normally selects the CYCLES
timebase. SECONDS or CYCLES timebase may be selected at any time before,
during, or after a test. CURRENT DISPLAY:
This 4 digit LED
display indicates the output current. In CONTINUOUS mode, as well as in
MEMORY mode before and during a test, the display indicates true-RMS output
current in real time. This display
can also indicate peak RMS and last average current. This feature allows the
test set to be used to test various solid state trip devices used on circuit
breakers. It may not be accurate for times less than half a cycle. MEMORY key: This
key toggles the MEMORY mode, indicated by illumination of its LED. In MEMORY mode (LED on), the current
display will read the continuous output current until the test is complete.
At this time, the LED will flash, and the display will read the computed
true-RMS value of the entire current pulse for the duration indicated on the
TIME display. This key may be pressed at any time before, during, or after
the test, to toggle between the two modes. |
PI-4000B
Primary Injection Circuit Breaker Test Set
Specifications
|
MAC-20 Monitor Ammeter
Controller Current Ranges: ·
0-1000
Amps ·
5
Kilo-Amps ·
25
Kilo-Amps ·
100
Kilo-Amps Current Accuracy: ·
+/-
0.5% of reading + .5% Full Scale ·
Continuous ·
+/-
1% of reading + 1% Full Scale Pulse Timer Ranges: ·
0-9999.999
Seconds ·
0-9999.9
Cycles Timer Accuracy: ·
+/-
0.005% of reading +/- 1 count Dimensions and Weight ·
Height: 8.5 in. (216 mm) ·
Width: 19.5 in. (495 mm) ·
Depth: 13.0 in. (330 mm) ·
Weight:
15 lb. (6.8 kg) |
PI-4000B Output Current
& Overlaod Capabilities
*Available with 480 VAC input only: *** Not
available 240 Volt Input |