DESCRIPTION The PI-1600
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 240 VAC supplies, generates continuous current
of 400, 800, amps at 4.2 kVA, with peak output to
over 10x. When configured for the PI-1600 the PI-AUX output
unit is connected in series or parallel to the PI-800. The PI-AUX
boosts total power to 9.8KVA, and allows testing of drawout
breakers and MCB’s to 1600 Amps. 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 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 PI-1600
consists of a strong aluminum frame, housed in a rugged plastic and
aluminum enclosure with removable sealed front and back lids. Comfortable
recessed side handles provide ease of handling and mobility. 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 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 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-1600 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 Control Panel 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.
SPECIFICATIONS PI-1600 Output
Current & Overload Capabilities Additional
Equipment Required: Requires a complete PI-800
(including MAC-20) for operation See separate data sheet for
specification on PI-800 Input
Supply: 240 VAC + 10%, -15% (Switch Selectable), Single Phase 60 Hz (50 Hz at 10% lower maximum line voltages) Dimensions
and Weight Height: 11.5 in. (292 mm) Width: 21.5
in. (546 mm) Depth: 18.5 in. (470 mm),
22.5 in (572 mm) with lids Weight: 115 lb. (52 kg) Electrical
Test Instruments, Inc.
|
4.2V (S/P) |
8.4 V (Series) |
Over- load |
Duty |
Max ON Time |
Min OFF Time |
Max Input Curr 240V |
|
1600 A |
800 A |
1X |
100% |
Continuous |
N/A |
38 amps |
|
2250 A |
1125 A |
1.4 X |
50% |
15 Min |
15 Min |
53 amps |
|
3200 A |
1600 A |
2 X |
25% |
5 Min |
15 Min |
75 amps |
|
4800 A |
2400 A |
3 X |
10% |
2.5 Min |
20 Min |
112 amps |
|
6400 A |
3200 A |
4 X |
6% |
75 Sec |
20 Min |
150 amps |
|
8000 A |
4000 A |
5 X |
4% |
4 Sec |
2 Min |
187 amps |
|
11200 A |
5600 A |
7 X |
2% |
2 Sec |
2 Min |
262 amps |
|
16000 A |
8000 A |
10 X |
1% |
0.6 Sec |
1 Min |
375 amps |