PI-800
Portable Circuit Breaker Test Set
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Input: 120, 208-240 VAC +/- 10% ( Switch Selectable
·
4.2 KVA Continuous ( Test
up to 800 Amp Circuit Breakers)
·
Digital Memory Ammeter
Controller MAC-20
·
Rugged plastic and
aluminum enclosure with removable protective lids
·
Selectable Output
Connections for all types impedance loads
·
Variable pulse times for
convenient preset output current
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DESCRIPTION The PI-800 Circuit Breaker Test System incorporates modular
design and flexibility to provide unequaled capability in a portable package.
The PI-800 used alone, on 120 or 240supplies, generates continuous
current of 400, 800, amps at 4.2 kVA, with peak output to over 10x. The units
are housed in rugged interlocking suitcase-size enclosures. Each piece weighs
no more than 125 pounds, allowing one person hand truck mobility. Basic
operation is very simple, and the proven MAC-20 instrumentation
provides optimal output control and measurement. The PI-800 is a versatile and technologically
advanced primary injection test set capable of testing circuit breakers up to
800 amperes frame size. It incorporates a special lightweight toroidal output
transformer with dual primaries to facilitate its use on power sources of 120
VAC as well as 240 VAC, and quad secondaries to provide optimal impedance
matching to a wide range of breaker sizes. Internal fan cooling allows
maximum utilization of the output transformer and faster recovery after
overload conditions. The PI-800 consists of a strong aluminum frame, housed in a
rugged plastic and aluminum enclosure with removable sealed front and back
lids. All controls, indicators, and input connections are on the front panel.
The versatile 50 amp input plugs may be connected to heavy duty portable
cords with a variety of connectors for 120 VAC, 208 VAC, or 240 VAC.
Individual leads may also be used to connect to buswork The output connections are on the rear, along with
an auxiliary Output ON indicator, configuration switch, and air output from
the fans, which can help cool cables and breakers. Comfortable recessed side
handles provide ease of mobility. The MAC-20 instrumentation is supplied in a
separate rugged portable case, interlocks on top of the PI-800, and
connects to a cable in the rear of the test set. The eight silver plated output bus connectors allow
configuration for continuous outputs of 800 amperes at 4.2 VAC, and 400
amperes at 8.4 VAC, for testing molded case breakers with cables. They can
also be connected for 1600 amperes at 2.1 VAC, which can be used for CT
testing, heat runs of bus connections and limited testing of air drawout
breakers. They have pressed-in 3/8"-16 stainless steel threaded inserts,
which eliminates the need for nuts, and the configuration bars are slotted
for quick and easy changing for various breaker sizes. |
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-800 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-800
Portable Circuit Breaker Test Set
Monitor Ammeter
Controller Portable 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) Standard Accessories ·
800 Amp
Output Connectors 4 Each ·
Series
Connection Bar 1 Each ·
Technical
Manual 1 Copy |
PI-800 Output Current & Overlaod Capabilities
*Available
with 240 VAC input only; Max ON Times may be less at 120VAC ** Maximum
output current into short circuit with very low source impedance. Input Supply: ·
120
or 240 VAC + 10%, -15% (Switch Selectable), Single Phase ·
60 Hz
(50 Hz at 10% lower maximum line voltages) ·
4.2
KVA (Continuous) at 3.8KVA output (90% efficiency) |