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3 Phase
Power Meter - PA
600 |
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Introduction |
PA-600 (here in after called PA)
is a state of art technology
developed by Gopal Electronics,
as a result of continuous &
steady research and development
of our qualified engineering
staff.
PA is powerful Instrument for
testing Single Phase and Three
Phase AC Machines due to it’s
high sampling rate, simultaneous
measurements for all channels,
and capability to perform
accurate measurements of Active
Power, Trms Value, Mean value
and Peak value of Voltage and
Current. PA is Micro-Controller
based Instrument and hence,
performs accurate calculations
of PF, CF, FF, S, Q, with any
load and signals of frequencies
from 30 Hz to 800 Hz. Isolated
inputs have a high immunity
against electrical disturbances,
high dynamic common-mode
rejection and feature of
multiple measuring ranges: For
Current directly from 80mA to
80A and for voltage directly
from 6 V to 600V.
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PA is
designed
for
user-friendly
operation
with
features
like two
displays:
one LCD
and
another
LED (LED
for long
distance
view)
and 16
push
buttons,
to
perform
easy
operations.
Input
terminals
have
been
designed
to
withstand
in
momentary
over
load
condition
up to
200A. PA
has no
adjustable
component
inside,
therefore
it’s
accuracy
remains
for long
time
without
tampering.
PA is
enhanced
by
RS-232
port to
interface
with
computer.
Free
demo
software
viz.
“DATA
TRANSFER
TOOL“
has been
provided
for
communication.
The
software
is
capable
to
collect
basic
data in
real
time (or
from
internal
memory)
and
transfers
it to
specified
cells of
MS-Excel
sheet
for
further
calculation
hence, a
user can
generate
his own
test
report
of
device
under
test (e.g
transformer
/ motor
etc) as
per his
desire.
We
understand
our
clients
better
and have
tried to
fulfill
the
maximum
need of
measurement
in
Transformer
and
Motor,
as a
result
we have
provided
four 10
Volt DC
channel
for
interfacing
of
various
types of
Transducer
for
measurement
of
Temperature
,
Torque,
RPM,
Pressure,
flow
etc.
Application
of PA is
to test
and
measure
single
phase/three
phase AC
Machines
like
Transformer,
Motor,
Food
processor,
Air
conditioner,
Fan,
Heater,
lighting
Ballast,
Energy
meter ,
calibration
of AC
meters
etc.
Internal
Non-Volatile
Memory
is
provided
to save
up to
125 test
results
and all
test
results
can be
transferred
to
computer
one by
one
using
Data
transfer
tool so
there is
no need
to note
down
test
results
by hand. |
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Warm up time |
30 minutes |
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Recommended
Operating temperature |
20° to 45° Celsius |
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Recommended
Operating humidity |
20 to 75% RH (non
condensation) |
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Storage temperature |
25° to 50° Celsius |
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Insulation resistance |
40M Ohm or higher at
600V all of the
following area
Voltage input terminal
to case
Current input terminal
to case
Voltage input terminal
to Current input
terminal
Case to power supply |
Insulation withstand
voltage |
2000V for 1minute at 50
Hz across all of the
following area
Voltage input terminal
to case
Current input terminal
to case
Voltage input terminal
to Current input
terminal |
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Power supply |
210V - 250V / 50Hz |
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Power consumption |
15VA maximum |
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Size |
280 x 260 x 130 mm (l x
b x h) including
projection |
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Panel mounting cut
out size |
280 x 115 mm |
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Weight |
3.5 kg approximate. |
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Input
Speciation |
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Parameter |
Voltage |
Current |
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Input type |
Resistance
voltage divider |
Current to voltage
converter |
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Rated Values |
600V rms |
80A rms |
Measuring instrument
loss (Input
resistance) |
Approx.2MΩ
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Approx. 1m
Ω |
Maximum
Instantaneous
allowed
input
(1 cycle OR 30ms duration) |
Peak value - 1.5 kV
for PA-600 &
350 V for PA-140
RMS value - 1.1 kV
for PA-600 &
250 V for PA-140
(Whichever is less) |
Peak value:-200A for
PA-600,20A for
PA-600-8A & 12A for
PA-140
RMS value:-150A for
PA-600,15A for
PA-600-8A & 9A for
PA-140
(Whichever is less) |
Maximum
instantaneous
allowed input
(1 second duration) |
Peak value:-1.4 kV
for PA-600 &
195V for PA-140
RMS value:-1.0 kV
for PA-600 &
230V for PA-140
(Whichever is less) |
Peak value:-150A for
PA-600,15A for
PA-600-8A & 9A for
PA-140
RMS value:-100A for
PA-600,10A
for PA-600-8A & 6A
for PA-140
(Whichever is less) |
Maximum continuous
allowed input |
Peak value:-850V for
PA-600 &
200V for PA-140
RMS value:-600V for
PA-600 &
140V for PA-140
(Whichever is less) |
Peak value:-120A for
PA-600,12A for
PA-600-8A & 7A for
PA-140
RMS value:-80A for
PA-600,8A for
PA-600-8A & 5A for
PA-140
(Whichever is less) |
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Input terminal type |
Banana socket
(wire fit type) |
Direct input: large
binding Post
(with 1/4” BSW copper
stud with insulated
nut) |
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Calculate
Function |
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Parameter |
3
Wire |
V* 1.73205 mode |
4
Wire |
| Volt
V |
V=(V1+V2)/2 |
V1 = 3˝
V1
V2 = 3˝
V2
V3 = 3˝
V3
V = (V1 + V2 + V3)/3 |
V =
(V1 + V2 + V3)/3 |
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Current I |
I =
(I1 + I2)/2 |
I =
(I1 + I2 + I3)/3 |
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Active Power P |
P =
P1 + P2 |
P =
P1+ P2 + P3 |
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Power Factor PF |
PF =
(PF1 + PF2)/2 |
PF
=(PF1 + PF2 + PF3)/3 |
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Apparent Power S |
S1 =
V1 x I1
S2 = V2 x I2
S = S1+ S2 |
S1 =
V1 x I1
S2 = V2 x I2
S3 = V3 x I3
S = S1 + S2 + S3 |
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Reactive Power Q |
Q
=(S2 - P2)˝ |
| Mean
Volt |
V
mean = 1.11072 x
Voltage rectified |
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Crest Factor cf |
cf =
Peak Value/RMS Value |
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Factor ff |
ff =
RMS Value/Average
Value |
Note:
1. If the input
contains distorted
wave, the
calculation based
parameters may not
match to those of
the other measuring
instruments based on different measuring principles.
2. If either voltage
or current falls to
10% of the range
rating or less, then
the apparent power
(S), power factor
(pf) & reactive
power (Q) may be displayed with errors.
3. No sign of power
factor is displayed
when current lags
the voltage and
negative sign is
displayed when
current leads the
voltage. |
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Measurement
Function |
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Parameter |
Voltage / Current
/ Active power |
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System |
Digital sampling,
Sum of average
method |
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Conditions
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Accuracy
(within
one year
after
calibration) |
| Temp |
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25°
± 5° C |
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Humidity |
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30 - 75% |
| RH
Input
waveform |
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Sine wave |
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power
factor |
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1.0 |
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Display
digits |
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5 / 6digits |
| AVG |
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8 sample
mode |
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Frequency range |
Accuracy |
30 Hz to 44 Hz
45 Hz to 65 Hz
66 Hz to 800 Hz
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±(0.2% of rdg
+ 0.2%of rng)
±(0.1%of rdg
+ 0.1% of rng)
±(0.2%of rdg
+ 0.2% of rng)
Peak/Mean above x 2 |
Additional power
factor
effect on active
power
measurement |
0.035°@50Hz
Or time delay errors
2.5µs |
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Effective input
range |
10-100% of Voltage,
1-100% current range
rating |
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Display updating
value |
1/ 2/ 3/ 4/ 5/ 6/ 7/
8 seconds selectable
by sample average
menu |
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Frequency
Measurements |
Conditions: Input
≥
30% of
V1 from 30 to 800Hz
Accuracy ± 0.1%
Frequency measured
at input of
V1 to Neutral |
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Extra Input
Specifications - M1, M2, M3, M4,
RPM |
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Input |
L type terminal at
rear side |
Accuracy / Remark |
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Input type |
DC |
± 0.25 % FSD |
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Maximum Input |
10V |
Withstand up to 20V
peak |
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RPM CARD Input |
Compatible with
Gopal make rpm and
slip card for
measurement of motor
and pump rpm. |
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Note |
External inputs are
useful for any
converter
connectivity and
useful to
measure Temperature, Torque,
Flow, pressure etc. |
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Options
available with additional Cost |
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Slip rpm card and
rpm proximity switch
to measure rpm |
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Terminal Lugs set |
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Panel mounting type
box |
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Specifications are
subject to change
without prior notice
for further
improvement of
product.
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